Multilayer Gas-Bearing System and Productivity Characteristics in Carboniferous–Permian Tight Sandstones: Taking the Daning–Jixian Block, Eastern Ordos Basin, as an Example

Ming Chen, Bo Wang (), Haonian Tian, Junyi Sun, Lei Liu, Xing Liang, Benliang Chen, Baoshi Yu and Zhuo Zhang
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Ming Chen: College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
Bo Wang: Information Institute of the Ministry of Emergency Management of PRC, Beijing 100029, China
Haonian Tian: PetroChina Coalbed Methane Company Limited Linfen Branch, Linfen 042202, China
Junyi Sun: PetroChina Coalbed Methane Company Limited Linfen Branch, Linfen 042202, China
Lei Liu: Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process, Ministry of Education, China University of Mining and Technology, Xuzhou 221008, China
Xing Liang: PetroChina Zhejiang Oilfield Company, Hangzhou 311100, China
Benliang Chen: Huainan Mining (Group) Co., Ltd., Huainan 232001, China
Baoshi Yu: PetroChina Zhejiang Oilfield Company, Hangzhou 311100, China
Zhuo Zhang: PetroChina Zhejiang Oilfield Company, Hangzhou 311100, China

Energies, 2025, vol. 18, issue 9, 1-17

Abstract: The Carboniferous–Permian strata in the Daning–Jixian Block, located on the eastern edge of the Ordos Basin, host multiple sets of tight gas reservoirs. However, systematic research on the characteristics and gas production differences of multilayer tight sandstone gas-bearing systems remains limited. Based on geochemical signatures, reservoir pressure coefficients, and sequence stratigraphy, the tight sandstone gas systems are subdivided into upper and lower systems, separated by regionally extensive Taiyuan Formation limestone. The upper system is further partitioned into four subsystems. Depositional variability from the Benxi Formation to the He 8 Member has generated diverse litho-mineralogical characteristics. The Shan 1 and He 8 Members, deposited in low-energy delta-front subaqueous distributary channels with gentle topography, exhibit lower quartz content (predominantly feldspar lithic sandstone and lithic quartz sand-stone) and elevated lithic fragments, matrix, and clay minerals (particularly chlorite). These factors increase displacement and median pressures, resulting in inferior reservoir quality. By comparing and evaluating the gas production effects under different extraction methods, targeted optimization recommendations are provided to offer both theoretical support and practical guidance for the efficient development of this block.

Keywords: Daning–Jixian block; tight sandstone gas; multilayer gas-bearing system; gas production (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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