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DOI: https://doi.org/10.11698/PED.20240377

Distribution model of tight sandstone gas reservoirs and shale gas reservoirs

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  • 1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
    2. China University of Petroleum (Beijing), Beijing 102249, China;
    3. Peking University, Beijing 100871, China;
    4. Wuxi Institute of Petroleum Geology, Sinopec Petroleum Exploration and Production Research Institute, Wuxi 214126, China;
    5. China University of Petroleum (East China), Qingdao 266580, China

Received date: 2024-06-06

  Revised date: 2024-07-02

  Online published: 2024-07-03

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Abstract

Based on an elaboration of the resource potential and annual production of tight sandstone gas and shale gas in the United States and China, this paper reviews the researches on distribution of tight sandstone gas and shale gas reservoirs, and analyzes the distribution characteristics and genetic types of tight sandstone gas reservoirs. It is indicated that, in the United States, the proportion of tight sandstone gas in the total gas production declined from 20%-35% in 2008 to about 8% in 2023, and the shale gas production was 8 310×108 m3 in 2023, as about 80% of the total gas production, in contrast to the range of 5%-17% during 2000-2008. In China, the proportion of tight sandstone gas in the total gas production increased from 16% in 2010 to 28% or higher in 2023. China began to produce shale gas in 2012, with the production reaching 250×108 m3 in 2023, as about 11% of the country's total gas production. The distribution of shale gas reservoirs is continuous. According to the fault presence and the gas layer thickness, the continuous shale gas reservoirs can be divided into two types: continual and intermittent. Most of previous studies believed that both tight sandstone gas reservoirs and shale gas reservoirs are continuous, but this paper holds that the distribution of tight sandstone gas reservoirs is not continuous. According to the trap types, tight sandstone gas reservoirs can be divided into lithologic, anticlinal, and synclinal reservoirs. The tight sandstone gas is coal-derived gas in typical basins in China and Egypt, but oil-type gas in typical basins in the United States and Oman.

Key words： shale gas; tight gas; reservoir characteristics; continuous accumulation; lithologic accumulation; anticlinal accumulation; synclinal accumulation; coal-derived gas; oil-type gas

Cite this article

DAI Jinxing, DONG Dazhong, NI Yunyan, GOND Deyu, HUANG Shipeng, HONG Feng, ZHANG Yanling, LIU Quanyou, WU Xiaoqi, FENG Ziqi . Distribution model of tight sandstone gas reservoirs and shale gas reservoirs[J]. Petroleum Exploration and Development, 0 : 20240812 -20240812 . DOI: 10.11698/PED.20240377

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