物探与化探2025，Vol.49Issue(2)：299-311,13.DOI:10.11720/wtyht.2025.1278
页岩气层小微尺度断缝精细预测方法
A fine-scale prediction method for small-scale faults and fractures in shale gas reservoirs
摘要
Abstract
Small-and micro-scale faults fractures(fractures and faults with fault throw less than 10 m)that originally developed in shale strata have a significant impact on the probability of penetration,stimulation volume,and production capacity of high-quality res-ervoirs in horizontal well sections.Therefore,it is critical to conduct fine-scale fault and fracture prediction.However,any single method struggles to accurately identify and predict these faults and fractures.Based on the developmental conditions of small-and micro-scale faults and fractures in the shale gas reservoirs of the Longmaxi Formation in the southern Sichuan Basin,this study conducted for-ward modeling,response mechanism analysis,and characterization of fracture responses,developing a prediction method integrating predicting and modeling.Furthermore,this study preferentially investigated techniques including seismic data processing,small-scale fault and fracture prediction,multi-scale fracture modeling,and fusion characterization.The results of the proposed method were highly consistent with the geological anomalies including small and micro-scale faults,lost circulation,and inter-well pressure channeling ob-served during the drilling of horizontal wells in the shale gas reservoirs of the Longmaxi Formation.Furthermore,these results exhibit a strong positive correlation with the single-well production capacity.All these corroborate that it is feasible to use this method to predict small-and micro-scale faults and fractures.This study can serve as a reference for predicting small-scale faults and fractures in other strata of the same type.关键词
页岩气/小微尺度断缝/响应机理/预测/建模/融合表征Key words
shale gas/small-and micro-scale fracture/response mechanism/predict/modeling/fusion representation分类
天文与地球科学引用本文复制引用
吕其彪,吴清杰,李曙光,汪仁富..页岩气层小微尺度断缝精细预测方法[J].物探与化探,2025,49(2):299-311,13.基金项目
中国石化"十条龙"科技攻关项目"川南复杂构造区页岩气勘探开发关键技术"(P21042-1) （P21042-1）
