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ORIGINAL RESEARCH article

Front. Earth Sci.
Sec. Geoscience and Society
Volume 12 - 2024 | doi: 10.3389/feart.2024.1485125

Research on the integrated calculation method of current recovery and limited recovery in tight sandstone gas reservoirs

Provisionally accepted
Jinyou Dai Jinyou Dai 1,2*Junzhe Wu Junzhe Wu 1Zhang Yang Zhang Yang 1Daixin Chen Daixin Chen 1
  • 1 College of Petroleum Engineering, China University of Petroleum, Beijing, China
  • 2 Ministry of Education Key Laboratory for Petroleum Engineering, College of Petroleum Engineering, China University of Petroleum, Beijing, Beijing, China

The final, formatted version of the article will be published soon.

    Considering the differences in reserves and their utilization among gas reservoir area, utilization area and swept area, a reserves zoning producing model was established, and a method for integrating current recovery and limited recovery in gas reservoirs, the reserve analysis method, was proposed. The method was applied to calculate the current recovery and limited recovery of the gas reservoir and assess the potential of the gas reservoir to enhance the recovery, taking the Zizhou gas field in the Ordos Basin of China, the Shan2 tight sandstone gas reservoir, as an example. The results show that the method is able to simultaneously determine the current recovery, limited recovery, planar sweep efficiency, vertical sweep efficiency and gas driving efficiency of a gas reservoir by using four reserve parameters such as the gas reservoir area geological reserves, the producing area geological reserves, the swept area geological reserves, and the remaining geological reserves in the swept area when abandoned. This method is simple and easy to implement, and provides a new way for the evaluation of gas reservoir recovery potential and the study of improving the development method of gas reservoirs.

    Keywords: Tight sandstone gas reservoirs, Current recovery, limited recovery, recovery enhancement potential, calculation methods

    Received: 23 Aug 2024; Accepted: 22 Oct 2024.

    Copyright: © 2024 Dai, Wu, Yang and Chen. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Jinyou Dai, College of Petroleum Engineering, China University of Petroleum, Beijing, China

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