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For the benefit of its members, the COPAS website provides links to the websites of advertisers. In providing these links, COPAS does not endorse or recommend any products and services. COPAS makes no representation or warranty, whether statutory, expressed or implied with respect to advertiser's products or services, including but not limited to its condition, quality, fitness for a particular purpose, conformity to, or the merchantability of any advertised product or service. COPAS assumes no liability, whether expressed or implied, for any defect in advertiser's products or the advertiser's failure to adequately perform any services.


4A Energy Advisors LLC provides an experienced, COPAS knowledgeable staff for contract compliance reviews related to:

  • Capital Expenditures (drilling, completion, equipping, etc.)
  • Lease Operating Expenses
  • Vendors/Contractors with Special Emphasis on Land Brokers
  • Revenue/Production Settlements
  • Midstream Operations
  • International Joint Ventures
  • Litigation Support

AMS-PAR offers you a higher level of assurance. At AMS-PAR, our goal is to recover lost profits for your company and provide a unique insight into your contractual relationships. Through comprehensive examination of your company’s contracts, we help you assess whether your joint venture partners, suppliers, and contractors are in compliance with the terms of your agreements.

Whether you have investments in the deep gulf, onshore, or in producing basins around the world, the AMS-PAR team has the experience to evaluate whether billings, production allocations, and revenue distributions are properly made to joint venture partners and other interest owners. Our unique approach and use of advanced and proprietary technology enables us to interrogate data in new ways to help uncover more discrepancies by looking at the information differently. Our professional staff provide you the consistency and higher level of assurance that you deserve from a trusted adviser.


Martindale Consultants Employee-owned since 1982 with a combine 200+ years of experience, Martindale is THE specialty consulting company focused on contract compliance, analysis, accounting, and special projects in the oil and gas industry.  Our strength is with our people. We cultivate a continuous learning environment paired with experienced leadership, resulting in long-term employees that are passionate about the work we do.  This produces client results and creates successful long-term relationships.  Our project managers provide a continuous point-of-contact with our clients and "cradle-to-grave" updates throughout our projects. We utlilize an efficient use of resources that balance experience with youthful problem-solvers.  We utilize an efficient use of resources that balances experience with youthful problem-solvers. Focus areas are:

Joint Venture Expense | Revenues | Royalty | Gas Plant | Payout | Deepwater | Vendor | Severance Taxes | Litigation Support | Special Projects | COPAS Consultation


OGC Consulting – Established in 1999, OGC Consulting covers the full spectrum of oil and gas contracting activities: negotiation, compliance, litigation support, joint ventures, contractors/vendors, gas processing and revenue. Whether you are an operator, non-operator, lawyer, or landman, OGC Consulting can help you and your firm.  Our over 30 affiliated professionals bring with them experience from across the globe and entire landscape of the Oil and Gas Industry.


Petroleum Comptroller Services, Inc. (PCS), and its predecessor firm have provided domestic and international joint venture and related review services since 1984.


Professional Development Institute (PDI) PDI's renowned Energy division delivers quality Continuing Professional Education to the energy business -- training that is on target, on site and on budget.  Each of our program authors/instructors is a "been there, done that" professional with outstanding industry knowledge coming from decades of industry experience.  All instructors have the skills to communicate, at any level, the material your employees need to be more effective.  Explore our array of programs covering Fundamentals, Petroleum Accounting, Joint Interest, Expense Side, Revenue and Tax.  Find the title and delivery mode that best suits your needs.


WolfePak Software is software for the Rest of us! Operator Suite with Payroll. Fully integrated scanning also available.