Proceedings of the International Conference on Industrial Design and Environmental Engineering, IDEE 2023, November 24–26, 2023, Zhengzhou, China

Research Article

Decline Law of Gas Wells in Different Classes of Tight Sandstone Gas Reservoirs in Sulige Area

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  • @INPROCEEDINGS{10.4108/eai.24-11-2023.2343424,
        author={Jie  Liu and Liang  Zhao and Yan  Li and Yinghong  Li and Yongjie  Zhang and Li  Peng and Xuehua  Peng and Changqing  Li and Xiao  Hu and Yan  Wang},
        title={Decline Law of Gas Wells in Different Classes of Tight  Sandstone Gas Reservoirs in Sulige Area},
        proceedings={Proceedings of the International Conference on Industrial Design and Environmental Engineering, IDEE 2023, November 24--26, 2023, Zhengzhou, China},
        publisher={EAI},
        proceedings_a={IDEE},
        year={2024},
        month={2},
        keywords={sulige gas field; gas well production; decline type; decline law},
        doi={10.4108/eai.24-11-2023.2343424}
    }
    
  • Jie Liu
    Liang Zhao
    Yan Li
    Yinghong Li
    Yongjie Zhang
    Li Peng
    Xuehua Peng
    Changqing Li
    Xiao Hu
    Yan Wang
    Year: 2024
    Decline Law of Gas Wells in Different Classes of Tight Sandstone Gas Reservoirs in Sulige Area
    IDEE
    EAI
    DOI: 10.4108/eai.24-11-2023.2343424
Jie Liu1, Liang Zhao1, Yan Li1, Yinghong Li1, Yongjie Zhang1, Li Peng1, Xuehua Peng1, Changqing Li1, Xiao Hu1, Yan Wang2,*
  • 1: The Third Gas Production Plant of PetroChina Changqing Oilfield Branch
  • 2: Northwest University
*Contact email: sun-noon@163.com

Abstract

Taking a tight sandstone gas reservoir in Sulige area as an example, Arps analysis met hod is used to calculate production decline, and three production decline modes of exponential, hyperbolic and harmonic are explained in detail. The study shows that the decline law of different types of gas wells in a tight sandstone gas reservoir in Sulige area is similar, with exponential decline in the early stage of production and hyperbolic decline in the middle and later stages of production. Different types of reservoirs have different time to enter the boundary control flow, and class I gas well is shorter than class II gas well is shorter than class III gas well. The decline rate of gas wells in different reservoir types is different in different stages, but the decline rate in life cycle is basically the same.