A SEC Reserve Evaluation Method for Tight Gas Reservoirs

Tight gas resources are abundant and widely distributed. SEC reserves refer to the amount of natural gas that can be produced and has economic benefits under the current economic and operating conditions assessed according to the SEC guidelines. The scale of the proved reserves under the SEC standard represents the strength and competitiveness of oil and gas companies. Therefore, SEC reserves have become the core assets of oil and gas field companies and the material basis for the survival and development of oil and gas companies. In this paper, based on the development status of S tight gas reservoirs in China, the SEC reserve evaluation rules and gas reservoir decline rules are studied in depth. Determine the single well EUR and gas field recovery factor, and confirm the proved reserves of S tight gas reservoirs. The sensitivity analysis of SEC reserves under different operating costs and natural gas prices was carried out. Through the study of this paper, it is found that SEC reserves are closely related to operating indicators. Analyzing the relationship between SEC reserves and depletion rate can guide the production and operation of gas fields, and propose cost reduction and control measures.