Worldwide Petroleum Consulting

DeGolyer and MacNaughton has worked in petroleum-producing formations
around the globe, having completed projects in more than 100 countries:

Albania

Albania

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D&M has evaluated a number of fields in Albania and has had the opportunity to see the interest in that country’s hydrocarbon industry grow over the years. Most of the exploration and production has occurred in the western part of the country where D&M evaluations have been completed. The regional geology can be complex, with overthrusts and other tectonic history contributing to the accumulation of hydrocarbons.

Algeria

Algeria

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D&M has been evaluating properties in Algeria for more than 60 years, acting as the primary petroleum advisor to the Algerian national oil company over that time. The firm has also worked with a significant number of the foreign partners that own and operate fields in Algeria. The firm has prepared reserves evaluations, integrated studies, production forecasts, appraisals, and prospective resources evaluations for Algerian assets. D&M has reviewed development plans proposed by international oil companies, participated in unitization meetings and in financial loan agreements, and assisted various companies in developing newly acquired licenses in the country. The firm has served as the reservoir advisor for the continued development of the giant Hassi R’Mel field and all of the other major gas-condensate fields in Algeria and is the petroleum advisor to the giant Hassi Messaoud field in the Sahara Desert of Algeria. D&M has also been involved in special country evaluations of every discovered field in Algeria at various intervals, giving the firm unmatched expertise in evaluating fields in Algeria.

Angola

Angola

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The offshore area of Angola has been producing oil since 1968, when Cabinda Gulf began operations, and D&M has conducted appraisals in the Cabinda area since that time. The firm is familiar with the Albian mixed carbonate/clastic reservoirs of the Pinda Formation and the major clastic reservoirs of the Vermelha, Lago, Azul, Likouala, and Lucula Formations on the Angolan shelf. D&M has extensive experience with most of the Miocene discoveries in the Angolan deep water, including some of the deepest blocks at the frontier of development offshore Angola. D&M has forecast future production, capital expenditures, and operating costs for all of the offshore fields in Angola that are either producing or under development. The firm has examined geophysical data, well logs, production history, and the development plans for the offshore fields on behalf of the national oil company, as well as most of the other international oil companies operating in Angola during recent years.

Antigua and Barbuda

Antigua and Barbuda

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D&M’s experience in Antigua and Barbuda, which has seen no significant exploration for oil and gas potential, is limited to the neighboring petroleum systems represented in the Caribbean region.

Argentina

Argentina

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In Argentina, D&M has conducted technical studies in most of the major producing basins, including Neuquen, San Jorge, Cuyo, Austral, and the Northwest Basin. These studies have included detailed reservoir simulation, arbitration of technical issues, and prospect evaluations. D&M has participated with clients’ technical staff in data room evaluations of properties involved in acquisitions in the Neuquen and Austral Basins. The firm acted as the primary consultant to YPF S.A. during the privatization sale of YPF S.A.’s properties in the Austral Basin in southern Argentina. As a part of this study, D&M opened and supervised the data room for the privatization process, developing a detailed database that could be used to forecast future gas deliverability for the entire basin.
D&M has been very active in the evaluation of unconventional resources in Argentina, performing reservoir studies and reserves assessments for the major development shale and tight gas projects in the country, as well as exploration and appraisal areas.
In addition, after conducting its own certification, D&M facilitates the local certification process in Argentina, interacting with local consultants registered in the Ministerio de Energía y Minas, as required by its clients.

Australia

Australia

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D&M has more than 40 years of experience working in Australia, having evaluated numerous onshore and offshore fields. For example, the firm has evaluated more than 80 fields in the Cooper, Eromanga, and Surat Basins for various clients. These studies have included all aspects of geoscience, including geology, log evaluation, engineering, and economic analysis.
D&M performed the first major gas certification related to the Northwest Shelf fields, including the Rankin, Goodwyn, and Alwyn fields, offshore Western Australia. This series of studies for a number of interested parties represented a thorough independent evaluation of all available technical data from these fields. The studies were used to base financing and field development decisions pertaining to the first Australian liquefied natural gas project.
D&M performs periodic reserves updates of the Darwin liquefied natural gas project, including the Bayu Undan field. Additionally, D&M has estimated reserves for the developing Ichthys gas field, also destined for the Asia liquefied natural gas market. D&M was asked by the Australian Government, along with the Government of Timor-Leste, to assess the original in-place volumes for the Greater Sunrise field area located within a unitized area between the two entities. D&M performed an evaluation from geophysical interpretation through geologic modeling of the reservoirs present within the field, including estimation of both the original gas and original condensate in place.
D&M has evaluated several fields in Western Australia, including the Blina, Sundown, Harriett, North Herald, and South Pepper fields. Northern Territories field evaluations included the Jabiru and Challis, both of which were studied over a period of years during the delineation phase.
D&M is currently evaluating several unconventional shale gas fields, tight-gas reservoirs, and deep coal-seam gas in the Cooper, Surat, and Bowen Basins for various operators. In the Cooper Basin, D&M has worked the Jurassic oil play and the entire Permian gas section, which includes the Toolachee, Roseneath, Epsilon, Daralingie, Murteree, and Patchawarra sands, shale, and coal reservoirs. In the Surat Basin, D&M has evaluated the entire Cretaceous and Jurassic coal-seam gas section. In the Bowen Basin, D&M has experience with various coal sections and also the deep tight-gas zones (Rewan and Kianga reservoirs) within the Taroom Trough.
D&M has completed several field studies in the Bass Straits and offshore Tasmania. The firm also studied the exploration potential of the Gippsland Basin through an undeveloped prospect evaluation and has performed several resources studies in the Browse Basin.

Austria

Austria

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Throughout its history, D&M has evaluated all of the fields discovered in Austria and is actively supporting evaluations for various companies, including Austria-based operators and their partners. Much of the work has been concentrated in the large accumulations of the Matzen area northeast of Vienna. These reservoirs tend to be shallow, multi-layered, and faulted; however, there are also complex deeper reservoirs that are overthrusted and fractured dolomites that present many challenges to evaluate. D&M’s teams have also completed studies on large gas storage projects in Austria.

Azerbaijan

Azerbaijan

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D&M has evaluated the reserves in the key fields of Shah Deniz, Gunashli, Umid-Babek, Chirag, Absheron, and ACG for a number of clients, including the national oil company. D&M has also evaluated several large onshore fields, including the Kursenge and Karabagli fields. In total, D&M has evaluated dozens of fields, including all of the strategically important fields in the country, and remains current and active through ongoing projects.

Bahrain

Bahrain

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D&M has performed unconventional resources evaluations and has provided technical support for the selection of test locations, completion design of test wells, and evaluation of test results for a successful unconventional test program offshore Bahrain.

Bangladesh

Bangladesh

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D&M has performed several technical evaluations in Bangladesh for both public and private companies, including the national oil company and two international oil companies. The firm has evaluated fields throughout the country for more than 20 years. D&M has evaluated the largest gas field in the country in support of future development and compression installation and developed independent estimates of original gas in place and reserves for the various activities considered for the field.

Barbados

Barbados

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In Barbados, D&M has evaluated reserves of fields in the Woodbourne Development Area producing from complex reservoirs of the Scotland and Intermediate Unit Formations.

Belgium

Belgium

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D&M has advised the Government of Belgium on certain oil and gas matters throughout its history.

Benin

Benin

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D&M has assisted foreign partners in evaluating new discoveries and other opportunities in this small West Africa nation.

Bolivia

Bolivia

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D&M has a long history of service in Bolivia. During the 1960s, the firm performed a number of detailed reviews of all phases of operations of YPFB, the state-owned oil and gas company. The firm was the primary consultant in the capitalization/privatization process of YPFB, completing a reserves and economic evaluation of the entire country’s reserves in 1995. D&M has since updated that study, integrating the results of recent field activities and new discoveries, including those in the deep, prolific Huamampampa Formation.

Brazil

Brazil

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D&M’s experience in Brazil dates back to the 1940s, and it has performed annual reserves certification studies for Petrobras since 2001. These studies involve an appraisal evaluation of certain fields distributed throughout the producing basins of Brazil. D&M has significant and ongoing expertise in the prolific “pre-salt” fields located in the Santos and Campos Basins, having evaluated all of these fields for several different companies, including Petrobras.

D&M has performed appraisal evaluations of exploration potential in a multi-basin portfolio for a major Brazilian company. The firm has provided advice to Petrobras on strategies to maximize proved reserves with offset drilling in newly discovered fields. D&M’s experience with complex stratigraphic, structural, and reservoir engineering problems provides a foundation for any Brazilian project.

Bulgaria

Bulgaria

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D&M has had several opportunities to evaluate properties in Bulgaria, including gas developments and small oil operations. Partners involved in the financing of projects linking Bulgaria to Europe and Turkey have also been drawn to seek D&M’s services.

Cameroon

Cameroon

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D&M has evaluated LNG projects and provided independent evaluations of oil and gas reserves and resources in this West Africa nation bordering Nigeria, Congo, and Gabon. These evaluations have considered technical and economic parameters for the fields, sometimes in connection with projects in the neighboring countries.

Canada

Canada

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D&M has worked every major oil and gas basin in Canada, and the majority of producing formations, including many unconventional shales and oil sands, as well as eastern Canada offshore discoveries. D&M is able to deliver National Instrument 51-101 reports that are prepared in accordance with Canadian regulations for companies traded on Canadian stock exchanges.

Chile

Chile

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D&M’s activities in Chile began in 1975 when the Empresa Nacional del Petroleo (ENAP), the Chilean national oil company, initiated feasibility studies for the development of a liquefied natural gas project. The firm evaluated the reserves for the major oil and gas fields operated by ENAP for these studies. Since that time, the firm has performed a variety of projects for ENAP, such as the simulation of the major gas field in Chile (Posesion) and feasibility studies for enhanced recovery by water or carbon dioxide injection. Updates of the reserves of the ENAP fields are performed frequently. D&M has evaluated all the fields providing the gas feed to the methanol plant located in southern Chile. D&M has also evaluated the tight gas development project of the Glauconitic Formation in Chile.
In addition, D&M is currently involved with an annual evaluation for the first non-government E&P operator in Chile, evaluating fields in the Fell Block and other areas of the country.

China

China

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D&M performs annual reserves and appraisal studies in China on more than 400 oil and gas fields for China’s largest government oil and gas company. This massive study includes virtually every productive petroleum basin in China. Other recent studies have concentrated on detailed studies of fields in the Jilin Province for a private Chinese E&P operator, several ongoing projects in the Bohai Bay area, and prior multi-year studies on several large gas fields in the Sichuan Basin. D&M has evaluated the Yacheng field project, offshore Hainan Island, one of the largest gas projects in China. D&M’s evaluation included 2–D and 3–D seismic interpretation and detailed geological analysis in order to estimate the hydrocarbons in place for this export-oriented gas field. Detailed reservoir engineering simulation studies quantified the initial reserves.
D&M conducted fully integrated geologic-engineering evaluations of the Huizhou field complex offshore the South China coast in order to estimate reserves. D&M has also performed several reserves evaluations of various fields located in Bohai Bay for different field operators.

Colombia

Colombia

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D&M has worked on projects in nearly every basin in Colombia. The firm has active projects with Ecopetrol, the government-owned oil and gas company, as well as many private and public oil and gas companies. D&M has extensive experience in the Llanos Basin. D&M has studied the giant Cusiana and Cupiagua oil fields since their discovery, and has provided geological and engineering reports for fields in the Upper Magdalena, Middle Magdalena, and Bogota Basins. The company performed a reserves and deliverability study of a giant gas field offshore from the Guajira Peninsula to determine the feasibility of a gas pipeline project. The firm also has extensive expertise on the evaluation of the highly faulted foldbelt tectonics observed in the Andean Cordillera.

Congo

Congo

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D&M has extensive experience in both the Republic of Congo and Democratic Republic of Congo which are, separated by the Congo River. D&M’s clients include worldwide majors, as well as smaller operators, partners, and national companies. D&M’s reports have included evaluations of all of the major fields in Congo. D&M’s teams have had the opportunity to evaluate fields onshore and offshore (including recent deepwater discoveries) that produce from Cretaceous and Albian Formations. D&M experts have ongoing evaluations of value appraisals, independent SEC and PRMS certifications, and independent evaluations supporting financing projects. Specific evaluations have included geophysical, geological, and engineering interpretation; probabilistic estimation of in-place oil and gas volumes; well and test design to increase potential recoverable volumes; and country-wide economic sensitivity analyses.

Croatia

Croatia

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D&M has evaluated several of the gas fields that lie in Croatian Adriatic waters, including the Ivana and Ika fields.

Cuba

Cuba

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D&M has maintained a knowledge base of the petroleum systems of Cuba, starting with Everette Lee DeGolyer’s 1918 article describing the geology of petroleum deposits in the country. Until recently, work by United States firms in Cuba was limited by the United States Government, precluding its direct involvement in the country.

Denmark

Denmark

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D&M has been involved with the Danish oil and gas industry since its inception, providing assistance to the government with the first licensing rounds. Since then, its technical teams have been involved in evaluating all of the offshore fields in the North Sea for a wide range of clients. In addition, D&M has served as advisors for the largest Denmark-based producing company, from assisting in establishing its internal resources estimation system and its first publication of reserves and resources into the public domain, through its transition for sale to a private worldwide operator.

Ecuador

Ecuador

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In Ecuador, D&M is considered the expert on the Oriente Basin and has performed numerous field studies. The firm has evaluated the Napo T, Napo U, and Hollin reservoirs across the basin using state-of-the-art, 3–D geophysical techniques. D&M personnel are familiar with the structural and stratigraphic styles in the Gulf of Guayaquil.

Egypt

Egypt

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D&M has been evaluating properties in Egypt for several decades, completing projects for most of the active operators and interest holders in the Western Desert, Gulf of Suez, Nile Delta, and offshore Mediterranean areas of Egypt. D&M continues to be involved with several active projects in various stages of completion in the region, including large new offshore gas discoveries. These projects encompass evaluation of oil and gas reserves, specialized prospective resources evaluations, project finance for processing plants and gathering facilities, development planning, and secondary recovery projects in several areas of the country.

Equatorial Guinea

Equatorial Guinea

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D&M has been evaluating properties offshore Equatorial Guinea since the very early stages of appraisal and conceptual development. D&M’s reserves appraisal experience in this area, on behalf of a variety of clients, has enabled the firm to gain an in-depth understanding of these complex reservoir systems as the fields mature and equipped D&M to support identification of additional exploitation opportunities.

Ethiopia

Ethiopia

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D&M has completed evaluations of contingent resources for certain discoveries in the Ogaden Basin. These discoveries in the Cretaceous and Jurassic sections are located in the southern area of Ethiopia. While historically not an active petroleum area, recent discoveries and development in the region have heightened interest in several countries in this region.

Fiji

Fiji

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While no oil and gas discoveries have been made in Fiji, exploration activity in the late 1970s and 1980s focused in the Bligh Water Basin. The continuation of the trend of hydrocarbon-bearing reservoirs from Irian Jaya through Papua New Guinea provides potential for reefal- and turbidite-type reservoirs. D&M’s experience in Indonesia, Irian Jaya, and Papua New Guinea provides a foundation of knowledge and experience to address prospects and leads, as well as any potential discoveries.

France

France

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D&M recently completed a major project focused on the Trois Fontaines Gas field and has completed other projects in years past in the Paris Basin for various parties. More recent activity includes reviewing unconventional resources potential and assisting in valuing potential losses due to license truncation.

Gabon

Gabon

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D&M has extensive experience in the evaluation and appraisal of reserves and resources both onshore and offshore Gabon. For more than 20 years, D&M has performed studies on every major field in Gabon on behalf of government agencies, the banking community, and major and independent oil companies. The firm participated in the initial assessment of the oil reserves in Gabon, the results of which formed the basis for the initial exploration licenses for the country. D&M continues to be active in evaluation in Gabon as additional exploration activities have expanded the country’s resources base.

Germany

Germany

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D&M has had the opportunity to evaluate properties in Germany for many decades following the Second World War. Such evaluations have been for prominent Germany-based petroleum companies, as well as other European and U.S. partners who have held interests in Germany. Evaluations have included annual evaluations for major international companies, specific field studies, independent evaluations to support financing collateral, and dispute resolutions. D&M personnel have experience in all of the geological provinces in Germany.

Ghana

Ghana

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D&M has completed multiple evaluations of the largest discoveries in offshore Ghana during the past 10 years, with our involvement including detailed subsurface studies as well as reserves/resources evaluations. These large, complex reservoirs require detailed analysis of geophysical, petrophysical, geological, and engineering data to properly assess their extent, productivity, and optimal development plans.  We expect to continue building our experience with these assets in the future through additional assignments for our clients.
D&M has also been involved in assisting in seismic exploration, designing of seismic processing workflows, seismic processing QC, building regional velocity models, building reservoir static models, and 4D seismic analysis in Ghana.

Greenland

Greenland

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While no active exploration or production efforts are underway in Greenland, D&M was tasked with examining several prospective assets. This work relied on the extensive prospective resources evaluation work D&M has performed worldwide.

Grenada

Grenada

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In Grenada, D&M has performed a reconnaissance study of the petroleum potential of the southern offshore areas. This work built on the extensive prospective resources evaluation D&M has performed worldwide, providing a comparative knowledge base on which to characterize the potential for the presence of undiscovered resources.

Guatemala

Guatemala

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D&M has conducted technical studies in the North and South Petén Basin, the major producing basin of the country, since 1993. Studies have included review and interpretation of 2–D and 3–D seismic data; exploration potential studies; evaluations and recommendations of prospective resources; reserves estimations and appraisals in multiple fields producing from the Coban Formation; economic models studies; and 2–D and 3–D reservoir model studies.
More recently, D&M has assisted with delineation, development planning, and reserves studies for a new gas-condensate field discovery.

Guyana

Guyana

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D&M has been active in evaluating prospective resources in the Guyana-Suriname Basin on behalf of several operators over the last 6 years. Following ExxonMobil’s discovery of the Liza field in 2015, industry interest in the petroleum systems in this basin soared. The primary targets to date are oil-bearing, lower-slope to basin floor fans. D&M’s knowledge and experience in the basin continues to grow with the initial discovery and development phase of the Liza field discovery. The play type and depositional environments present in the Guyana-Suriname Basin are analogous to those found on the west coast of Africa, where D&M has extensive experience in evaluating reserves, contingent resources, and prospective resources in countries such as Equatorial Guinea, Gabon, and Ghana.

Honduras

Honduras

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Exploration drilling in Honduras has been limited, with BG last holding rights to drill exploration wells. To date, no commercial oil or gas discoveries have been made in the country. D&M has extensive prospect evaluation experience throughout Latin America, including Colombia and Mexico. D&M’s knowledge of the petroleum systems onshore and offshore Mexico, coupled with its significant experience evaluating oil and gas fields throughout Colombia, enables us to assess the potential prospective oil and gas accumulations in Honduras.

Hungary

Hungary

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D&M has conducted numerous projects and evaluated several fields across Hungary for independent companies, as well as the national oil company. Some of the fields recently evaluated include the Hadjunanas, Tiszvasvari 6, and Turkeve-IV fields.

India

India

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D&M has evaluated fields in most of the geologic basins in India, both onshore and offshore. D&M provides annual reserves evaluations for several of the largest private oil and gas companies as well as performing government required reserves evaluations for Oil and Natural Gas Corporation and many additional privately held oil and gas companies. D&M’s experience ranges from the producing oil and gas fields in the Barmer Basin to the Bombay High. D&M has evaluated reserves, performed gas-balancing studies, and carried out fully independent certification studies as well as reservoir simulation studies for various clients. D&M’s knowledge and experience with producing fields in India is very well respected by both private and government-owned companies in the industry.
Evaluations of the gas reserves associated with deepwater fields located offshore India in the Krishna Godari Basin have been carried out, including detailed reservoir simulation of existing producing fields and new discoveries in support of development planning. D&M has also worked on behalf of the Government of India in evaluating fields that are located across multiple blocks for assessing the potential distribution of recoverable hydrocarbons.
D&M performed a series of detailed reserves evaluations for the Panna, Mukta, and Tapti fields offshore Mumbai following the transfer of operatorship from ONGC to private companies. These reserves analyses will be used, among other things, to support project financing for continued development of these fields.
D&M is conducting ongoing reserves and contingent resources evaluations for the operator of a group of developing oil and gas fields in Rajasthan that represent the largest oil discoveries in India in decades.
During 1993, 2004, 2010, 2011, and 2013, D&M completed major reserves studies for more than 70 fields in India, which represent the majority of the active oil and gas production fields in the country.

Indonesia

Indonesia

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The firm has evaluated virtually all of the gas fields in Indonesia, including gas fields used to supply the world’s largest liquefied natural gas plants, such as Bontang and Tangguh. For more than 30 years, and continuing presently, D&M has been closely involved with the Indonesian government oil regulatory agency, as well as the major international operators, local Indonesian operators, banks, and lending institutions that support the Indonesian petroleum industry. D&M pioneered the use of “gas certifications” as a way to bridge a gap between gas producers and gas purchasers. Through this concept, the firm performed the initial reserves evaluations for a majority of the fields that provide natural gas to Indonesian liquefied natural gas plants.
D&M has recently been involved with technical studies of Indonesian oil and gas fields that have been designated as gas supply sources for domestic requirements and for sale into Singapore. These projects have very high visibility within Indonesia and the international financial community, and D&M plays a prominent role in the progress of this endeavor.
D&M’s experience in Indonesia includes all types of depositional environments, from clean ultra-high permeability carbonates in Sumatra to complex, deltaic clastic accumulations in East Kalimantan and east and west Java.
In addition to technical evaluations of producing oil and gas fields, D&M provides exploration-oriented advice to its clients for fields with little or no well control.
D&M acts on behalf of its clients in technical data rooms to gather and interpret data for prospective oil and gas purchases. The firm provides the in-depth technical assessment, as well as the requisite economic analyses, designed to produce detailed after-tax cash flow results from which objective purchase decisions can be made. D&M has participated in several data rooms for Indonesian oil and gas properties, as well as others in the Asia-Pacific region. The firm’s team of technical experts has years of hands-on experience throughout Southeast Asia with such projects.

Iran

Iran

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Though restrained by recent governmental sanctions and limitations on its activity there, D&M does have a history with evaluations in Iran, one of the more prolific hydrocarbon venues in the world. The largest gas field in the world, South Pars/North Dome Field, shared by Iran and Qatar, has been evaluated by D&M on multiple occasions. D&M’s clients have included worldwide majors and national companies. D&M economists have gained experience in the unique licensing arrangements in this venue over the years and have developed proprietary programs to estimate net reserves and revenue from production. Historically, D&M has had opportunity to be involved with the earliest evaluations of Iran’s hydrocarbon potential.

Iraq

Iraq

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D&M has performed evaluations of rehabilitation projects in middle and southern Iraq, as well as the newer discoveries in the Kurdistan region of northern Iraq. These evaluations involved sophisticated techniques, such as dynamic models and pressure transient analysis, to consider dual-porosity systems and complex recovery mechanisms. D&M has completed evaluations for appraisals, Competent Person’s Reports, reservoir studies, and independent evaluations for field development and project financing.

Ireland

Ireland

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D&M has been involved in evaluations of the largest and most recently developed gas fields offshore Ireland. These evaluations have included gas deliverability analysis, tubular design impediments, and very detailed gas contract incorporation. The Triassic reservoirs are fairly straightforward in their structure, but can provide challenges in determining limits of productivity. As such, tools for evaluating pressure-bound systems are essential in these studies.

Italy

Italy

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D&M has had the opportunity to work every province of oil and gas production and gas storage in Italy, including the prized Val d’Agri area in the Southern Apennines. Much of the production is mature, but areas such as Val d’Agri and offshore in the Adriatic have active exploration and appraisal projects ongoing. D&M has evaluated fields and discoveries for all of the major operators in Italy, as well as a number of smaller participants. D&M has been selected in numerous instances to evaluate a number of assets in Sicily, including the largest producing fields in the region.

Japan

Japan

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D&M has worked for many Japanese oil companies in assessing their assets worldwide. In addition, D&M has evaluated the Minami-Nagaoka field, which produces from a fractured volcanic reservoir. D&M’s detailed petrophysical interpretation linking various volcanic facies to petrophysical properties formed the foundation for distributing the original gas in place. Coupled with material-balance analysis, estimates of reserves were prepared based on the field development. D&M has also evaluated reservoirs in the Nakajo field from which gas dissolved in the aquifer is recovered with produced water quantities. These fields highlight the variation in both reservoir fluids and reservoir rock type that D&M has been asked to evaluate.

Kazakhstan

Kazakhstan

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Over the past decade, D&M has worked for 27 companies and evaluated more than 150 fields in Kazakhstan. Through its office in Dallas and its branch office in Astana, the firm is currently working with the national oil company of Kazakhstan to assist in the establishment of more efficient development practices to maximize recovery and improve the classification of reserves and resources. In Astana, a full-time staff of 20 professional geologists, petrophysicists, and production, reservoir, and surface facility engineers are working with the national oil company and partners across Kazakhstan to enhance production and increase reserves and recovery factors through better well operations and completion design and better reservoir management practices. D&M staff members are also mentoring and demonstrating best practices with local staff.

Kenya

Kenya

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D&M has evaluated several resources opportunities in the Lamu Basin, including the Miocene reef targets.

Kuwait

Kuwait

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D&M has significant recent experience in various parts of Kuwait and the Divided Zone, performing reserves estimations in both onshore and offshore environments for the national oil company and other clients. All the major reservoir types have been evaluated by the firm’s expert team of analysts. D&M has performed reserves evaluations, reservoir simulation analysis, and reservoir characterization studies over a long time period for both government-owned and public oil and gas companies. D&M has also designed a chemical EOR pilot program for a heterogeneous reservoir in Kuwait.

Liberia

Liberia

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D&M has evaluated several resources opportunities in the Liberia-Sierra Leone Basin, including the Campanian-, Maastrichtian-, and Turonian-age targets.

Libya

Libya

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D&M has performed studies in Libya since the 1960s. Initially, D&M assisted companies trying to obtain concessions. More recently, the firm’s work has included reserves and resources assessments and project studies on behalf of Western clients that have interests in Libya. D&M has recently been involved in the assessment of resources potential in several of the undeveloped portions of the basins in Libya and has gained extensive expertise in the application of probabilistic techniques to support the estimation of resources volumes in these large, but sparsely drilled, undeveloped portions of the country. With recent interruptions in production and development, D&M evaluators have been requested to estimate the impact of delays, license extensions, and overall value gain and loss. These recent evaluations have involved diverse and integrated teams of technical and economic experts at D&M.
D&M has also completed several field development studies within the country of Libya. These studies considered the improvement of depletion and waterflood activities as well as the potential for EOR activities.

Malaysia

Malaysia

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D&M has completed field studies on behalf of several multinational operating companies and the Malaysian national oil company, Petronas. The firm performs annual reserves evaluations and performed the initial and second certifications of the prolific fields included in the Joint Development Area between Malaysia and Thailand.
D&M has completed reserves studies of the emerging gas discoveries offshore Sarawak and Sabah for potential inclusion in expanded Malaysian liquefied natural gas shipments.
D&M has been actively involved in evaluations for potential acquisitions and divestitures of assets in Malaysia, accompanying clients to data rooms, and discussing technical and economic evaluations with client management teams.

Mauritania

Mauritania

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D&M has evaluated most of the fields in and off the coast of Mauritania, including some of the largest discoveries and developments. The fields can be complex and multi-layered, with significant productivity variations. Recent work includes evaluations of field developments for Competent Person’s Reports, technical studies, bank financing, and general reserves reporting compliance.

Mexico

Mexico

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D&M has extensive experience evaluating oil and gas fields in Mexico. In 1910, D&M’s founder, Everette DeGolyer, successfully recommended the drilling location for the world-class Potrero del Llano No. 4 well. Today, this expertise is carried forward in technical analyses and valuations that have encompassed most of the oil and gas fields in the Southwest Marine Region, including some of the largest fields for PEMEX, the government-owned oil and gas company. D&M also has experience in the Chicontepec paleocanal area and most of the gas fields in the Veracruz and Burgos areas.
Additionally, D&M has evaluated exploration areas offered in the recent bid rounds, including analyses that include basin modeling, seismic interpretation, opportunity identification, and full prospective resources valuation. D&M is experienced in all productive basins in Mexico, having evaluated areas in ultra-deep water, deep water, shallow water, onshore, Chicontepec, and shales. The firm’s experience meeting complex geologic and reservoir engineering challenges provides a solid platform for any project in Mexico.

Mongolia

Mongolia

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Since 2007, D&M has performed annual reserves evaluations of two oil fields in Mongolia. The fields produce from multiple-pay sands, and each field has been developed with approximately 200 production wells.

Morocco

Morocco

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D&M has evaluated several resources opportunities in the Tarfaya and Essaouira Basins, including the Miocene-, Jurassic-, and Cretaceous-age targets.

Mozambique

Mozambique

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D&M has performed reservoir and reserves certification studies onshore and offshore of Mozambique for several clients, including the national oil company of Mozambique. The largest and most recent offshore discoveries in Blocks 1 and 4 have been, and continue to be, evaluated by D&M experts. The firm has also completed independent geological and engineering studies of the large onshore Pande and Temane gas fields to support financing and field development. These studies included highly detailed evaluations of the geophysics, geology, petrophysics, and engineering of multiple clastic reservoirs. D&M has also worked with the government of Mozambique to assist with licensing rounds for certain offshore assets.

Namibia

Namibia

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D&M has evaluated a number of prospective resources projects in Namibia, where increasing interest in the reservoirs correlative to Brazil and the east coast of South America has led companies to consider exploratory drilling.

Netherlands

Netherlands

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D&M has completed a number of evaluations of fields offshore the Netherlands. As a component of the North Sea network of hydrocarbon accumulations, the reservoirs and fields offshore the Netherlands have similar geological characteristics to the rest of the North Sea. However, the accumulations tend to be compartmentalized and multi-layered. As such, recovery evaluations can be challenging. D&M has been able to competently estimate reserves for many of the interest holders there that have been relied upon by regulators, banks, and joint interest holders. The evaluations completed by D&M have been part of large portfolio evaluations, transactional studies, and specific field studies.

New Zealand

New Zealand

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Through its long-standing cooperation with international operators, D&M has a lengthy history of evaluating oil and gas fields in New Zealand. Recently, D&M has begun working with local New Zealand companies to evaluate reserves as well as potential development options and enhanced oil recovery applications of local fields. D&M has an understanding of the complex royalty regimes under which fields in New Zealand operate. The firm regularly includes economic analysis as part of its evaluation projects.

Nicaragua

Nicaragua

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There are no reported producing oil and gas discoveries in Nicaragua, though explorations efforts have resulted in at least one reported discovery located offshore. Most of the recent exploration activity has focused on the Sandino Basin. D&M has extensive exploration prospect evaluation and reserves experience throughout Central and South America from which to draw upon in the evaluation of potential hydrocarbon accumulations.

Nigeria

Nigeria

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D&M has decades of experience in Nigeria. In recent years, D&M has evaluated most of the fields in the Niger Delta. The firm has completed numerous gas certification studies on behalf of major international oil companies and joint ventures in support of investment in the monetization of Nigeria’s gas reserves and resources through the construction and expansion of various liquefied natural gas plants. The understanding of the Nigerian gas business gained from these studies has enhanced D&M’s ability to serve clients in Nigeria, including Nigerian companies, major international oil companies, prominent members of the international financial community, and government owned companies. As development activity has migrated offshore to deeper water, D&M’s evaluation activity has included many of the mega-projects associated with these deepwater fields. More recently, Nigerian companies have asked D&M to evaluate holdings, assist them in identifying opportunities, and to help them produce financial reports that will be compliant and acceptable to the financial markets.

Norway

Norway

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D&M has had the opportunity to work almost every field and discovery offshore Norway for a significant number of varied clients. Ongoing SEC evaluations for foreign partners introduced D&M to the venue when the first discoveries were made. D&M’s early involvement lead to the firm being asked to perform a comprehensive evaluation of all of the assets of the largest holder of rights offshore Norway in support of an initial public offering of stock. On a continuous and ongoing basis, D&M teams evaluate discoveries, fields, and portfolios for assets offshore Norway.

Oman

Oman

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D&M has performed studies and evaluations in Oman since the 1970s. The firm prepared several reserves evaluations and production forecasts for both the government of Oman and several operating companies in the country. These studies were comprehensive and covered the entire country. In recent years, D&M has maintained an active role in the evaluation of reserves that supply the Oman liquefied natural gas plant. This plant initiated service in mid-2000, and D&M completes evaluations at certain milestones and changes, such as gas plant expansions.

Pakistan

Pakistan

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D&M has extensive experience in evaluating reserves within Pakistan. For more than 35 years, D&M has performed field studies on nearly every field in Pakistan on behalf of the investment banking community, multi-national oil and gas companies, Oil and Gas Development Company (OGDC), and power generation companies. D&M has performed countrywide evaluations of the national gas supply for the purposes of forming a long-term energy policy for the country. These studies considered reserves evaluation and deliverability of all gas fields to develop projections for numerous demand scenarios. The reports were presented to OGDC, various pipeline companies, and the World Bank.
D&M performs reserves studies for various clients on fields in Pakistan on an annual basis and has been involved in assessing both reserves and deliverability of those fields. These studies have included evaluations of the Sui, Pirkoh, Uch, and Qadirpur fields for long-term fuel supply for various power projects, including the Habibullah Power Project, the Kabirwala Power Project, the Liberty Power Project, and the Uch Power Project. In the past, D&M has performed studies of the Sui, Pirkoh, Bhit, Uch, Dhurnal Qadirpur, Suwan, Kadanwari, Miano, Nandpur, and Panjpir fields and 46 fields in the Badin Block. D&M is also familiar with several fields currently under appraisal in the Sindh Province. The firm’s experience extends to all of the major fields in the Sindh and Baluchistan Provinces, as well as fields in the Punjab and Northwest Frontier Provinces. D&M has long-standing relationships with many of the operators in the country, as well as with OGDC.
Ultimately, D&M’s level of experience and familiarity provides the firm with an advantage in evaluating the fields in Pakistan that already exist and enable the firm to provide more robust and efficient evaluations.

Papua New Guinea

Papua New Guinea

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D&M has completed numerous geologic and engineering studies in the Fly River (Papuan) Basin, emphasizing geologic and geophysical reconnaissance work. The firm has primarily studied the Barikewa and Kuru gas fields in western Papua. Recent reserves evaluations have included most of the highland oil and gas fields to be associated with the PNG liquefied natural gas project.

Paraguay

Paraguay

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D&M has evaluated several resources opportunities in the Pirity Sub-Basin, including the Lecho and Yacoraite Formations.

Peru

Peru

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In Peru, D&M has provided a wide variety of studies for its clients, including reserves evaluations in the oil fields in Blocks 8 and 1-AB (192) in the northern jungle area of the Marañon Basin and in Blocks Z-2B, Z6, IV, V, VI, and VII of the complexly faulted fields in the Talara Basin. In the Ucayali Basin, D&M acted as the technical advisor to the Peruvian government in preparation for international bidding for operation of the Camisea project. This work included the development of a compositional simulation to investigate the effects of reservoir fractures on recovery efficiency for a gas cycling project. The firm has continued performing evaluations of Blocks 56 and 88 of the Camisea project for a partner/owner, as well as the nearby Blocks 57 and 58.

Philippines

Philippines

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D&M has evaluated many of the offshore Palawan Island oil discoveries on behalf of the companies operating these fields. The firm has recently completed a detailed reserves study of the Camago-Malampaya field, a major deepwater oil and gas discovery in this area.

Poland

Poland

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D&M has evaluated the reserves for more than 250 oil and gas fields for the national oil and gas company in Poland. Some of the most important fields evaluated are the BMB, Lubiatow, Zalesie, and Pryemysl fields. In addition, D&M has conducted a study of hydrocarbon potential in four blocks in the Baltic and Podlasie Basins of Poland for foreign interests.

Qatar

Qatar

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D&M has conducted numerous studies on fields in Qatar. It has assisted many international oil companies in other oil field rehabilitation projects, as well as the southern part of the largest gas accumulation in the world, the North Dome field.
The North Dome field offshore Qatar is gas productive in the deep, thick, and generally low permeability Khuff sand. D&M has performed multiple studies, spaced several years apart, on this concession. The work done by D&M has included annual reserves updates of the selected blocks in this field for multinational oil companies.

Romania

Romania

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D&M has evaluated most of the fields in Romania, including fields in the northern Transylvanian gas region, as well as the oil and gas fields in the southern part of the country. Many of the oldest existing petroleum-producing fields in the world are located in Romania, and some are undergoing tertiary methods of recovery, including firefloods, steamfloods, and polymer-modified waterfloods. The reservoirs can be extremely laminated and present challenges in evaluation of potential future recovery in the context of current field performance and original volume in place. D&M has had the opportunity to work with the largest operators in Romania as well as foreign joint-venture partners.

Russia

Russia

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D&M has extensive experience working in Russia, having evaluated about 75 percent of the oil reserves and 90 percent of the gas reserves of the Russian Federation. No other consulting firm comes close to the experience or capabilities that D&M has in Russia. D&M’s current client list includes many Russian oil and gas companies, large and small, as well as, many international companies that are active in Russia. D&M has fully staffed branch offices in Moscow and Astana, which, combined with the resources available at the Dallas office, has the capabilities to meet all of its clients’ needs and to do so in compliance with Russian Federation laws regarding the handling of information that is considered State secret.

Saudi Arabia

Saudi Arabia

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Some of D&M’s earliest work involved evaluations in the Middle East, including Saudi Arabia. D&M originally assessed the hydrocarbon potential that would eventually be realized in Saudi Arabia. D&M’s recent opportunities in the country include providing training and guidance on the evaluation of unconventional reservoirs.

Senegal

Senegal

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D&M has performed geophysical studies for offshore Senegal exploration, including QC of seismic processing and building of regional velocity models.

 

Serbia

Serbia

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D&M has evaluated the reserves of more than 20 oil and gas fields located across Serbia. The list of fields evaluated includes key strategic fields such as the Kikinda, Kikinda Varosh, Turija North, and Mokrin West fields.

South Africa

South Africa

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D&M has evaluated several resources opportunities in the Algoa, Gamtoos, and Orange Basins, including the Cretaceous-age targets.

South Korea

South Korea

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D&M has performed geophysical, geological, petrophysical, and engineering analysis on offshore gas fields in order to build a reservoir model of the gas fields.

 

 

Spain

Spain

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Evaluations of fields in Spain have been part of the D&M work portfolio for decades. D&M teams have evaluated offshore oil fields, onshore gas storage fields, and other assets in Spain. The firm has worked with Spanish-based rights holders and continues to work on an ongoing basis with the two most well-known oil and gas companies headquartered in Madrid, assisting one of them in their initial public offering.

Sri Lanka

Sri Lanka

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D&M evaluated two gas discoveries located offshore Sri Lanka on behalf of Cairn India Limited. The discoveries were made in relatively deep water in the Mannar Basin. Evaluation of the potentially recoverable quantities of hydrocarbons was performed using geophysical, petrophysical, and geological interpretation coupled with engineering evaluation of the potential well deliverabilities and notional development plans. These fields have not yet been developed pending further study. These discoveries were the first of their kind in more than 30 years.

Sultanate of Brunei

Sultanate of Brunei

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D&M has evaluated reservoirs offshore the island of Borneo. D&M’s experience covers gas-condensate reservoirs, oil reservoirs, and non-associated gas reservoirs. D&M’s evaluations have been performed in support of acquisitions, project finance, certifications, and annual reserves reporting requirements. The scope of its interpretations typically encompasses all facets of volumetric interpretation principles. Estimates of reserves and contingent resources integrate the various discipline-based interpretations into forecasts of potential future production.
D&M has conducted extensive geological and engineering studies of five giant oil fields in Brunei on behalf of the national oil company. These studies involved not only in-depth technical evaluation, but on-site inspection of field facilities and operational procedures as well.

Suriname

Suriname

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D&M has performed geophysical studies for offshore Suriname exploration, including QC of seismic processing, AVO analysis, and building of regional velocity models.

 

Syria

Syria

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D&M has been involved for many years with reserves evaluations in Syria. D&M has performed annual reviews of 35 oil fields in several key production sharing contracts in northeastern Syria. Much of the production is found in undersaturated oil zones, such as the Rutbah and Mulussa reservoirs. Associated gas from the oil fields has also been evaluated as part of gas plant projects.

Tanzania

Tanzania

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D&M has performed reservoir and reserves certification studies onshore and offshore Tanzania for several clients. A number of the larger offshore discoveries have been evaluated by D&M experts. These studies included highly detailed evaluations of the geophysics, geology, petrophysics, and engineering of multiple clastic reservoirs.

Thailand

Thailand

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D&M has completed a complex, fully integrated geological and engineering study of the Bongkot field. This study was greatly complicated by difficult geology and the presence of significant amounts of non-hydrocarbon components in the wellstream gas. Compositional modeling was used to predict field performance and ultimate recovery.
The firm is continuing to evaluate and estimate reserves in the Pailin and Moragot fields, Gulf of Thailand, as development drilling continues.
D&M has also conducted reserves evaluations of the large producing gas fields in the Erawan field complex to support project financing of a major gas pipeline and has recently completed a reserves evaluation of a large emerging gas field in this area.
D&M recently evaluated the majority of the oil and gas reserves of the Thailand national oil company, including fields onshore Thailand, fields located across the Gulf of Thailand, and the offshore Malaysian-Thailand joint development area.

Timor-Leste

Timor-Leste

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D&M was requested by the Government of Timor-Leste to assess the original in-place volumes for the Greater Sunrise field area located within a unitized area that is shared by Timor-Leste and the Australian Government. D&M performed an evaluation ranging from geophysical interpretation through geologic modeling of the reservoirs present within the field, including estimation of both the original gas and original condensate in place. D&M also performed the certification work for the Bayu Undan field, which is located within the Joint Petroleum Development Area between Australia and Timor-Leste, on behalf of the operator of the field. The certification work was performed in order to assess the reserves associated with the field prior to initial development. Both fields evaluated require transport for processing at a liquefied natural gas (LNG) facility. The Bayu Undan field has been producing since 2004. The Greater Sunrise field area development is still being negotiated.

Trinidad and Tobago

Trinidad and Tobago

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D&M has extensive experience evaluating oil, gas fields, and prospective resources in Trinidad and Tobago, working for the national oil and gas company of Trinidad and Tobago as well as several foreign operators. To perform these analyses, the firm worked with data from seismic, petrophysical, geological, reservoir, and numerical simulation models. D&M’s experience with complex geologic and reservoir engineering problems provides a foundation for any project in Trinidad and Tobago.

Tunisia

Tunisia

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D&M has conducted studies on most of the major oil and gas fields found onshore and offshore Tunisia, including the Didon, Ashtart, Adam, and other fields. Recent work has included the evaluation of discovered and undiscovered resources in the more remote areas of the country. D&M clients in Tunisia have included companies that operate the fields there, as well as partners in those developments.

Turkey

Turkey

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D&M was the first company to independently evaluate countrywide reserves and resources in Turkey. In addition, D&M has completed numerous projects in Turkey for other operators in the Thrace Basin, the Southeast Basin, and the Ortakoy area. D&M has a strong understanding of the producing environments in Turkey and the region, including physical, technical, monetary, and regulatory/tax regimes. D&M has interacted with field operations, producing company management, and financial participants in many of the field evaluations.

Turkmenistan

Turkmenistan

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D&M has performed a major study of the Dauletabad field in Turkmenistan. In addition, D&M performs annual reserves studies for numerous fields along the Amu Darya River, including Samandepe, Girsan, and many others. Several of the fields evaluated lie on the border between Turkmenistan and Uzbekistan. Much of the work D&M performs in Turkmenistan is conducted for foreign companies with interests in Turkmenistan.

Uganda

Uganda

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D&M has had the recent opportunity to evaluate prospective resources as well as exploratory drilling results in Uganda. The geology is complex, and there are challenges to the development and transportation planned in the country.

Ukraine

Ukraine

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D&M has evaluated the reserves of more than 100 fields located in every producing basin of Ukraine for several of the key energy companies active in the country. The fields evaluated for foreign companies with interests in Ukraine include the Kovilnenskoye, Lutsenkovskoye, and Kharkivtsevskoe-Sarsky fields. Fields evaluated for Ukrainian companies include some of the major strategic assets of the country.

United Arab Emirates

United Arab Emirates

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D&M has prepared evaluations on numerous fields in the United Arab Emirates specifically within the emirates of  Abu Dhabi, Dubai, Sharjah, and Ras al Khaimah and Sharjah.   The firm has evaluated reserves, prepared Competent Person’s Reports, prepared development plans, and  assisted in concession reviews for several operators and interest holders within some of the largest fields in the country, including the Arzanah, Abu al Bukhoosh, and Mubarek fields.  For most of this decade, D&M has also conducted annual reserves evaluations of several large producing fields offshore from Abu Dhabi in addition to numerous smaller fields in the vicinity.

United Kingdom

United Kingdom

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D&M has conducted studies and petroleum reserves/resources evaluations in the North Sea, including the United Kingdom and adjacent venues, for almost 50 years. From those first years, D&M’s experience in the United Kingdom has broadened and deepened, and D&M is now considered an expert on the North Sea by clients worldwide. Since the early 1970s, D&M has conducted studies on almost every North Sea field offshore United Kingdom.
The firm has ongoing studies in virtually every area of the region for clients ranging from major companies to midsize independents to small niche operators. D&M also currently evaluates property portfolios on an annual basis for the largest operators in the North Sea. In fact, the firm has evaluated reserves in approximately 90 percent of the offshore North Sea blocks that have United Kingdom production reserves. Several large public listings involving fields offshore United Kingdom have been completed by D&M in recent years.
Given the firm’s vast experience evaluating shale plays in the U.S. and elsewhere, D&M is well positioned to support the developing efforts to tap shale resources in the United Kingdom. D&M teams are being engaged to evaluate these resources for multiple clients.

United States

United States

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Since the founding of the firm in 1936, D&M’s reputation has been built on steady and broad involvement in the United States petroleum industry, focusing on reserves consulting and a wide variety of technical studies. The firm has analyzed fields in every basin in the United States, including the majority of conventional and unconventional formations. With personnel in Dallas and Houston, D&M has completed assignments of every size, from major domestic exploration companies with thousands of producing wells to small companies with only one or two wells. D&M’s specialized work teams have developed unique work flows and methodologies to evaluate clients’ interests in reserves and resources in unconventional reservoirs. In addition to serving exploration and production companies, D&M has also worked with financial services companies, investment banks, and private equity firms that have interests in United States assets. D&M maintains active engagement with the United States Securities and Exchange Commission (SEC), Society of Petroleum Engineers (SPE), and Society of Petroleum Evaluation Engineers (SPEE) and provides clients with SEC- and SPE-style reports in compliance with the regulations and guidance of each entity.

Uruguay

Uruguay

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D&M has evaluated several resources opportunities in the Punta del Este Basin, including the Albian-Aptian-, Permian-, Cretaceous-, and Paleocene-age targets. More than five license blocks were included in the evaluation. Additionally, D&M acted as the primary consultant to the national oil company of Uruguay during the divestiture of certain working interests in Argentina in 2016.

Uzbekistan

Uzbekistan

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In recent years, D&M has performed several studies related to significant financing projects for some of the major operators in Uzbekistan, focusing on key fields such as the Gumbalak, North Guzar, Dzharkkuduk-Yangi-Kyzylchu, and North Nishan fields.

Venezuela

Venezuela

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D&M has performed a wide variety of geological and engineering studies in Venezuela. D&M acted as technical advisors to Petróleos de Venezuela, S.A. for the appraisal evaluation of 17 fields awarded in the Third Marginal Round. The firm has unparalleled experience in the Orinoco Heavy Oil Belt, beginning with a study of the Cerro Negro area and conducting the certification of the first major Orinoco Belt project, Petrozuata. Detailed petrophysical, geological, and engineering studies have also been performed for the Sincor and Hamaca areas of the heavy oil region. D&M has developed type-well production profiles for proposed horizontal wells using reservoir simulation studies, including the effects of compaction and foamy oil pressure-volume-temperature behavior. D&M has also performed a wide variety of geological and engineering studies in both eastern and western Venezuela, including a detailed study of several prolific fields in the El Furrial Trend.

Vietnam

Vietnam

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D&M has performed reserves evaluations of several fields in offshore regions of Vietnam, including both sandstone and basement reservoirs for two international oil companies.
D&M has also evaluated the exploration potential of two field areas offshore Vietnam in the South China Sea. These two geographically distinct areas contain several different hydrocarbon trapping mechanisms and are believed to contain both carbonate and clastic sediments.

Yemen

Yemen

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D&M has been involved in Yemen since before the first commercial field began production in 1986. D&M has worked with most every foreign oil company with commercial production in Yemen and has created field development reports for presentation to the government and financial institutions. The firm has performed a wide variety of tasks including reserves analysis, exploration potential, detailed field development plans, field inspections, and a nationwide assessment of gas resources.
D&M’s extensive knowledge of Yemen led to the selection of the firm to perform a gas reserves and deliverability study for the largest fields in the country. This report was used to assess the commerciality of building a pipeline from the producing area to the coast for export as liquefied natural gas.