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Pressure transient analysis of a finite-conductivity multiple fractured horizontal well in linear composite gas reservoirs

Author:
Ren Jun-jie  Gao Yang-yang  Zheng Qiao  Guo Ping  Wang De-long  


Journal:
JOURNAL OF CENTRAL SOUTH UNIVERSITY


Issue Date:
2020


Abstract(summary):

Faulted gas reservoirs are very common in reality, where some linear leaky faults divide the gas reservoir into several reservoir regions with distinct physical properties. This kind of gas reservoirs is also known as linear composite (LC) gas reservoirs. Although some analytical/semi-analytical models have been proposed to investigate pressure behaviors of producing wells in LC reservoirs based on the linear composite ideas, almost all of them focus on vertical wells and studies on multiple fractured horizontal wells are rare. After the pressure wave arrives at the leaky fault, pressure behaviors of multiple fractured horizontal wells will be affected by the leaky faults. Understanding the effect of leaky faults on pressure behaviors of multiple fractured horizontal wells is critical to the development design. Therefore, a semi-analytical model of finite-conductivity multiple fractured horizontal (FCMFH) wells in LC gas reservoirs is established based on Laplace-space superposition principle and fracture discrete method. The proposed model is validated against commercial numerical simulator. Type curves are obtained to study pressure characteristics and identify flow regimes. The effects of some parameters on type curves are discussed. The proposed model will have a profound effect on developing analytical/semi-analytical models for other complex well types in LC gas reservoirs.


Page:
780---796


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