Petroleum Reserves Consulting, Since 1961
Petroleum Reserves Consulting
Cawley, Gillespie and Associates, Inc.
Petroleum Reserves Consultants, Gillespie and Associates, Inc. (CG&A) began serving the oil and gas industry over 60 years ago. Though our methods and tools have evolved since that time, our values have not. We still provide ethical and independent petroleum reserves engineering services. Our extremely capable team of professional petroleum engineering consultants have broad range of experience and capabilities to serve all your petroleum consulting needs. You deserve responsive engineers and geologists delivering reliable property evaluations… on time!
Putting our clients first, since 1961
As a Petroleum Reserves 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 petroleum engineering consultants, reservoir engineers and geologists integrate geological, geophysical, engineering and economic data to produce high-quality reserve estimates and economic forecasts.
- Office locations in Fort Worth, Houston, and Austin, Texas, USA
- 30+ Petroleum Engineering Consultants, 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
Our Services
CG&A’s talented staff of Petroleum Reserves Consultants, Geologists, Technical Analysts, Economists, and Software Developers is here for all of your oil and gas property evaluation needs.
- Texas Professional Engineering Firm (F-693)
- Ability to pool resources from each office to prepare the best team for your project
- Access to third-party experts and services for special projects
- Deep experience in SEC, SPE-PRMS and COGEH reporting
- Direct relationship with key SEC auditors
- Regularly attend data rooms and assist clients with acquisitions and/or divestitures
- Approached by all major banks, key regional banks, and private equity firms
- Oil and Gas Reserves Evaluation
- Oil and Gas Reserves Reporting
Engineering
Estimation of petroleum reserves and resources
Geoscience
Analyzing wireline logs, mud & drilling logs, cores & core data
Economics
Economic evaluation of petroleum properties
Resource Studies
CG&A regularly prepares volume-oriented field studies and basin analyses for investors and midstream clients
Acquisitions & Divestitures
Travel to data room and gather pertinent details from the seller’s technical staff
Oil and Gas Reserve Reporting
Classifying and quantifying reserves & resources, and determining associated net present value.
Petroleum Reserves Consulting Blog
Todd Brooker Elected to the SPEE 2025 Board of Directors
CG&A is thrilled to announce the election of Todd Brooker to the SPEE 2025 Board of Directors! We are so proud of Todd for his outstanding leadership, not only within…
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