As a petroleum consulting firm, CG&A reviews and evaluates hundreds of thousands of oil and gas properties on an annual basis worth billions of dollars. Our clients include oil and gas companies, financial institutions, midstream/pipeline companies and individual investors. With diversified experience in oil and gas producing properties throughout North America and around the globe, CG&A’s proficient team of reservoir engineers and geologists integrate geological, geophysical, engineering and economic data to produce high-quality reserve estimates and economic forecasts.
Cawley, Gillespie and Associates, Inc.
60+ years of serving the oil and gas industry.
- Putting our clients first, since 1961
- Office locations in Fort Worth, Houston, and Austin, Texas, USA
- 30+ Engineers, Geologists and Technical Analysts
- Worldwide producing basin experience, unconventional and conventional
- Approved by all major banks, key regional banks, and private equity firms
- Deep experience with SEC, SPE-PRMS and COGEH guidelines and reporting
The birth of our firm goes back to 1961 when Clarke Gillespie started his own petroleum engineering consulting firm and Aaron Cawley and Jimmie Harrington also started their own firm. The merger of the two firms led to the formation of Cawley, Harrington, and Gillespie, Inc., which was later changed to Cawley, Gillespie & Associates, Inc. (“CG&A”) with the departure of Harrington and the arrival of A. W. Augustson and Walter J. Evans. However, the roots of CG&A go back much further than 1961.
In the late 1930s or early 1940s, a Fort Worth based geological consulting firm Cummins, Berger, Pishney, and Brinkerhoff was providing services to the petroleum industry. Mr. Brinkerhoff lived in Houston and ran their offices there. In the late 1940s or early 1950s, this firm separated and Ralph Cummins continued to have an office in Fort Worth. Walter Berger became an independent consultant. Charles Pishney became associated with Burton Atkinson in the early 1950s, and they later separated in the early 1960s. Clarke Gillespie and Rush Vann shared offices with Atkinson and worked on joint projects together, and Gillespie later started his own firm in 1961.
In 1951, Wally Keller and L. F. Peterson left Stanolind Oil & Gas to form the engineering firm of Keller and Peterson in Midland. Jimmie Harrington and A. W. Augustson were employed by this firm in 1953 and shortly thereafter, their offices were moved to Fort Worth. Additional major hires by Keller and Peterson were Henry F. Calloway in 1954, Aaron Cawley in 1956, and Walter J. Evans in 1958. In 1972, Peterson left the firm of Keller and Peterson which became Keller and Augustson. Cawley and Harrington left Keller and Peterson in 1961 to form their own firm in Fort Worth which was later merged with Gillespie.
Cawley Gillespie & Associates, Inc. has continued business uninterrupted through the decades and today still delivers professional, ethical, and reliable engineering and geological services to the petroleum industry. Our longevity is a testament to the quality of our staff and services, and also to our long list of clients that have trusted CG&A for their engineering needs.