Reserves and Resources - A Guide to PRMS

The workshop investigates the classification and categorization of resources within the SPE-PRMS system.


The workshop investigates the classification and categorization of resources within the SPE-PRMS system. By the use of particular case studies, the workshop will highlight the boundaries between class and category when assessing resources for management and financial disclosure. The methodology for assessing hydrocarbons-in-place and resources is explained and the significance of uncertainty is described. Both deterministic and probabilistic approaches to volumetric assessment are outlined. The engineering toolkit, using static, decline curve, material balance and reservoir simulation, is described. The link between economic valuation and net Reserves and Resources is explained along with issues relating to aggregation and reporting of these volumes.


The workshop is targeted at mid to senior level engineers, geoscientists and commercial staff needing to understand better the principles and practice of reserves and resource reporting.


Andy Kirchin is the Executive Vice President in charge of RPS’ Houston upstream consulting services. RPS has brought Andy over to Houston to help grow the U.S. consulting business and help facilitate an effective exchange of skill-sets between RPS’ various international offices. Before moving to the U.S. Andy was the operational director in charge of RPS’ City of London office which provides integrated geoscience, engineering and commercial analysis of oil and gas properties internationally. He has more than 25 years of industry experience and, as one of the Principal consultants at RPS Energy, Andy has conducted numerous Expert roles both in Unitisation / Redetermination disputes and in the Valuations / Certification area providing technical advice and Competent Person Reporting to the City of London, both on AIM and full LSE. Andy has worked on projects in most of the world’s hydrocarbon provinces on both conventional and unconventional plays. He is a geophysicist by background but has a broad experience in dealing with the techno-commercial aspects of upstream sector.

Mark has 28 year’s broad-based petroleum engineering experience working in integrated project teams and reservoir development. Strong North Sea background with a broader international experience in the last 10 years. Good exposure to projects and production management, and has excellent experience of Operated Appraisal & Development Projects, including:-

  • Appraisal & development strategy. 
  • HPHT Appraisal & development 
  • Deep-water developments, including LNG, 
  • Complex ”designer” wells, horizontal and extended reach drilling.
  • Formally Head of Petroleum Engineering for BG Group, 
  • Currently Head of Reservoir Engineering at RPS Energy.