Vendors & Services

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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.


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


Martindale Consultants, In 1982, Martindale Consultants (MartiCons) was formed to provide consulting services to the Oil and Gas industry, focusing on joint interest, revenue, internal and vendor reviews.  We accomplished our objectives by establishing a company of employees dedicated to quality, training, professional development and unequaled service to our customers.  Considered experts among the industry in the application of contract provisions to accounting situations, we have been relied upon to provide assistance with contract negotiations, conflict resolution and expert witness testimony.  By attracting and retaining the most experienced oil and gas professionals in the industry, MartiCons is able to deliver a vast range and depth of experience to any project.  Dedication to quality and fairness is the hallmark of a MartiCons consulting engagement. 


OGC Consulting – Covering the full spectrum of oil and gas contracting activities: negotiation, compliance, litigation support, joint ventures, contractors/vendors, gas processing and revenue.


OGsys - we provide user-friendly, intuitive oil and gas accounting software that accelerates answers to critical questions impacting our clients' daily productivity and overall success. As the first company to develop an oil and gas accounting software application for the personal computer, OGsys has been a pioneer in the industry for nearly 30 years. We provide our clients vision, guidance and support by relentlessly delivering new product innovation, education and ongoing communication.


Professional Development Institute (PDI) provides training and education in the areas of accounting, tax and financial management for the extractive industries. 


Sherware optimizes your accounting systems so that your distributions are easy & reliable. Our software creates reports that anyone, even those outside of the industry, can easily understand. Our automated systems shave hours off your work-week and simplify your end of month tasks, saving you thousands of dollars per year and hundreds of hours to put back into your operations.


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