Worldwide Petroleum Consulting
Lonnie D. Murphy

Lonnie D. Murphy

Lonnie D. Murphy
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Lonnie D. Murphy joined DeGolyer and MacNaughton in 1998 and serves as Assistant Division Manager for the firm’s North America Division. Prior to joining D&M, Murphy worked with Enserch Exploration, Inc. for 17 years.

A graduate of Texas A&M University in 1981 with a bachelor’s degree in petroleum engineering, Murphy is a member of the Society of Petroleum Engineers. Murphy was elected a Senior Vice President of D&M in 2015.

Geographical Experience

  • Azerbaijan
  • Libya
  • North Sea
  • Russia
  • Syria
  • United States

Topical Areas of Expertise

  • Unconventional resources
  • Reserves estimation
  • Gas-condensate fields

Major Projects
Since joining D&M, Murphy has evaluated large gas and gas-condensate fields in Western Siberia, Russia, and southern Russia, in the onshore North Caspian Sea area.

Murphy has also evaluated oil and gas fields in the Gulf Coast areas of Texas and Louisiana, both onshore and offshore, in Oklahoma, and the Rocky Mountain and Appalachian regions. These also include unconventional resources in the Williston Basin, Permian Basin, Denver-Julesburg Basin, and South Texas, and properties that produce from the Monterey reservoir in the Santa Barbara Basin.

From late 1986 to mid-1990, Murphy specialized in enhanced recovery projects. He simulated performance of a variety of oil and gas reservoirs, including the Frio, Yegua, Edwards Lime, Wilcox, and Lobo. He modeled water-coning problems, field development of an offshore Netherlands oil field, effective depletion of a mature West Texas waterflood, and updip gas injection in a steeply dipping Mississippi oil field.

Murphy has studied mature producing fields in the Gulf Coast areas of Texas and Louisiana, Oklahoma, Utah, Wyoming, Pennsylvania, and West Virginia.

In western Siberia and southern Russia, he has estimated reserves using volumetric and material-balance techniques, incorporating data from all modern types of open-hole logging suites. He has analyzed results from conventional bottomhole and drill-stem tests as well as sidewall, conventional, and special core analyses.

Murphy has evaluated properties that produce from the Monterey reservoir in the Santa Barbara Basin, including the Casmalia, Cat Canyon, Santa Maria Valley, and Zaca fields.