物探与化探2025，Vol.49Issue(6)：1271-1280,10.DOI:10.11720/wtyht.2025.0051
地震属性与地质力学联合的裂缝建模技术及裂缝有效性分析
Seismic attribute-geomechanics integrated fracture modeling technology and fracture effectiveness analysis:A case study of the Jurassic shales in the Fuling area,Sichuan Basin
摘要
Abstract
The distribution of fractures influences the trajectory design of shale gas horizontal wells and the stimulation effectiveness of hydraulic fractures.Faults and joints serve as two types of fractures.Accordingly,this study proposed the seismic attribute-geomechan-ics integrated fracture modeling technology.Specifically,fault modeling is conducted using seismic attributes,and joint prediction is performed using geomechanical structural restoration and Mohr-Coulomb theory.The obtained results of faults and joints are then inte-grated into the discrete fracture network(DFN)modeling for spatial characterization of natural tectonic fractures.The proposed tech-nology was applied to the exploration of Jurassic lacustrine shales in the Fuling area within the Sichuan Basin.Its fracture modeling re-sults were consistent with the imaging log interpretation results,confirming the development zones and spatial distribution patterns of fractures.Moreover,the stimulation effectiveness of fracturing was evaluated by comparing the fracture modeling results of typical wells with the actual fracturing performance.The evaluation results indicate that tensile fractures that are vertical or oblique to well trajecto-ries are favorable for fracturing.Overall,the results of this study hold positive implications for predicting fracture development zones and guiding horizontal well trajectory design in the exploration stage,serving as a reference for subsequent exploration deployment.关键词
断裂建模/地震属性/页岩储层/DFN裂缝建模Key words
fracture modeling/seismic attribute/Mohr-Coulomb failure criterion/discrete fracture network(DFN)modeling分类
天文与地球科学引用本文复制引用
周江辉,刘晓晶,熊晨皓,胡鑫,吴益名..地震属性与地质力学联合的裂缝建模技术及裂缝有效性分析[J].物探与化探,2025,49(6):1271-1280,10.基金项目
国家科技重大专项"侏罗系致密油-页岩油富集规律及增储区带评选"(2025ZD1400405) （2025ZD1400405）
中国石化股份公司"四川盆地及周缘资源评价"(P23221) （P23221）
