Seepage Model and Pressure Response Characteristics of Non-Orthogonal Multi-Fracture Vertical Wells with Superimposed Sand Body in Tight Gas Reservoirs

被引：0

作者：

Zhou, Ziwu ^{[1
]}

Xia, Ao ^{[1
]}

Guo, Rui ^{[1
]}

Chen, Lin ^{[1
]}

Kong, Fengshuo ^{[1
]}

Zhao, Xiaoliang ^{[2
]}

机构：

[1] China Petr Corp West Drilling Engn Co, Sulige Gas Field Branch, Ordos 017000, Peoples R China

[2] China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China

来源：

ENERGIES | 2023年 / 16卷 / 21期

关键词：

tight gas; superimposed sand body; complex fracture; seepage model; pressure response; HORIZONTAL WELLS; OIL;

D O I：

10.3390/en16217275

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Faced with difficulties stemming from the complex interactions between tight gas sand bodies and fractures, when describing and identifying reservoirs, a composite reservoir model was established. By setting the supply boundary to characterize the superposition characteristics of sand bodies, a mathematical model of unstable seepage in fractured vertical wells in tight sandstone gas reservoirs was developed, considering factors such as stress sensitivity, fracture density and fracture symmetry. The seepage law and pressure response characteristics of gas wells in tight sandstone discontinuous reservoirs with stress sensitivity, semi-permeable supply boundary and complex fracture topology were determined, and the reliability of the model was verified. The research results more accurately display the pressure characteristic of a vertical well in the superimposed sand body with complex fractures and provide a more comprehensive model for tight gas production dynamic analysis and well test data analysis, which can more accurately guide the dynamic inversion of reservoir and fracture parameters.

引用

页数：17

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