Study on seepage model of Multiple Horizontal wells with complex fracture networks in tight Reservoir Based on boundary element method

IF 4.2 3区工程技术 Q2 ENERGY & FUELS

Natural Gas Industry B Pub Date : 2023-06-01 DOI:10.1016/j.ngib.2023.05.003

Zongxiao Ren , Zhan Qu , Shuaihu Jia , Guiyi Zhang , Chaobo Fan , Tian Feng , Zhongxing Ren

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引用次数: 0

Abstract

Horizontal well and volume fracturing technology are the key technologies to develop unconventional reservoirs. Tight reservoir is belonging to multi-scale seepage mediaafter fracturing, and theflow of fluid in it is extremely complicated. In this paper, based on the boundary element method (BEM), the seepage model of horizontal wells with complex fracture networks in irregular boundary reservoir is established for the first time. The model takes into account the influence of irregular reservoir boundary, dual media, complex fracture network and interference of multiple wells on horizontal well seepage. Using this model, the sensitivity analysis of wellbore storage coefficient, skin factor, fracture permeability and interporosity transfer coefficient is carried out. The model expands the application scope of BEM in the field of seepage simulation of unconventional oil and gas reservoirs and provides theoretical guidance for the development of tight oil reservoirs.

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基于边界元法的致密储层复杂裂缝网络多口水平井渗流模型研究

水平井和容积压裂技术是开发非常规油藏的关键技术。致密储层属于压裂后的多尺度渗流介质，其渗流过程极其复杂。本文首次基于边界元法建立了不规则边界油藏中具有复杂裂缝网络的水平井渗流模型。该模型考虑了储层边界不规则、双重介质、复杂裂缝网络和多井干扰对水平井渗流的影响。利用该模型对井筒储能系数、表皮系数、裂缝渗透率和孔隙间传递系数进行了敏感性分析。该模型扩展了边界元法在非常规油气藏渗流模拟领域的应用范围，为致密油藏的开发提供了理论指导。

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来源期刊

Natural Gas Industry B Earth and Planetary Sciences-Geology

CiteScore

5.80

自引率

6.10%

发文量

审稿时长

79 days