基于复电阻率的页岩水力压裂裂缝复杂性研究

IF 2.1 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Applied Geophysics Pub Date : 2025-07-04 DOI:10.1016/j.jappgeo.2025.105854

Fang He , Xiaolong Tong , Kui Xiang , Liangjun Yan , Yanling Shi , Zuzhi Hu , Xinghao Wang , Chi Zhang

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引用次数: 0

摘要

水力压裂是改善非常规储层物性，实现非常规油气资源有效开发的核心技术。与微震监测相比，电磁监测方法基于压裂液与围岩的诱导极化差异，具有更好的物理基础。针对页岩水力压裂过程中裂缝发育复杂性与岩石IP特征之间的关系，深入分析了压裂前后岩石导流能力或地层因素的变化，以及地表导流能力与岩石压裂复杂性之间的关系，提出了一种基于IP参数表征裂缝复杂性的方法。结合测试面裂缝发育的图像分析，验证了该方法的有效性。该方法实现了页岩压裂程度只关注压裂程度以获得较高渗流的局限性，忽略了岩石各向异性，为基于IP方法分析页岩水力压裂提供了新的思路和方法。

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Study on fracture complexity of shale hydraulic fracturing based on complex resistivity

Hydraulic fracturing is the core technology to improve the physical properties of unconventional reservoirs and realize the effective development of unconventional oil and gas resources. Compared with microseismic monitoring, electromagnetic monitoring method is based on the induced polarization (IP) difference between fracturing fluid and surrounding rock, and has a better physical foundation. Aiming at the relationship between fracture development complexity and rock IP characteristics during shale hydraulic fracturing, this paper deeply analyzes the changes of rock conductivity or formation factors before and after fracturing, and the relationship between surface conductivity and rock fracturing complexity, a method for characterizing fracture complexity based on IP parameters is proposed, and the validity of the method is verified by combining the image analysis of fracture development on the test surface. This method realizes the limitation that the shale fracture degree is concerned with the fracturing degree to achieve higher seepage and ignores the rock anisotropy, and provides a new idea and method for analyzing shale hydraulic fracturing based on IP method.

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来源期刊

Journal of Applied Geophysics 地学-地球科学综合

CiteScore

3.60

自引率

10.00%

发文量

274

审稿时长

4 months

期刊介绍： The Journal of Applied Geophysics with its key objective of responding to pertinent and timely needs, places particular emphasis on methodological developments and innovative applications of geophysical techniques for addressing environmental, engineering, and hydrological problems. Related topical research in exploration geophysics and in soil and rock physics is also covered by the Journal of Applied Geophysics.