石油科学通报2025，Vol.10Issue(6)：1152-1166,15.DOI:10.3969/j.issn.2096-1693.2025.03.029
走滑断裂带差异变形及内部结构特征对碳酸盐岩缝洞型储层的控制机理研究—以塔里木盆地富满地区FⅠ6断裂带为例
Research on the control mechanisms of differential deformation and internal structural characteristics of strike-slip fault zones on carbonate fracture-cavity reservoirs:A case study of the FI6 fault zone in the Fuman Area,Tarim Basin
ZHANG Haowei 1LIU Yuming 1HOU Jiagen 1LIU Haochen 1CHEN Qi 1LIU Peipei1
作者信息
- 1. National Key Laboratory of Petroleum Resources and Engineering,China University of Petroleum,Beijing 102249,China||College of Geosciences,China University of Petroleum,Beijing 102249,China
- 折叠
摘要
Abstract
To address the pronounced heterogeneity of deep-ultra-deep fault-controlled fractured-vuggy carbonate reservoirs in the Tarim Basin and the limited understanding of reservoir distribution and key controlling mechanisms across fault segments,this study investigates the FI6 strike-slip fault zone in the Fuman area.By integrating seismic-attribute analysis,log-based fracture identification,drilling data comparisons,and field outcrop observations,we characterize segment-dependent deformation and the internal fault-zone architecture,and elucidate how the strike-slip fault system controls reservoir development.Results show that the FⅠ6 fault zone is subdivided into linear,en-echelon fractured,left-stepping compressional,and horsetail segments.Segment-scale variations in stress regime and secondary fault arrangements control the scale and connectivity of fractures and vugs,producing a clear spatial coupling between deformation intensity and reservoir quality.Compared with weakly deformed segments,highly deformed domains show an increase in average porosity from approximately 2%to 5%and in average reservoir thickness from about 270 m to 645 m,indicating a significantly improved reservoir quality.By comparing the structural characteristics of the fault core and damage zone,we propose six representative models of internal reservoir architecture:(1)large isolated reservoirs dominated by the fault core;(2)fracture-dominated reservoirs governed by the damage zone;(3)core-zone composite fracture-cavity reservoirs;(4)intersection-controlled localized accumulations;(5)superimposed compressional breccia-cavity composites in overlapping segments;and(6)grid-like fracture-network reservoirs in horsetail terminations.Each model differs significantly in spatial morphology,pore connectivity,and accumulation mechanisms,reflecting the dominant influ-ences of fault segmentation,stress evolution,and internal structural variation on carbonate reservoir development.These results clarify the mechanistic links between strike-slip differential deformation and reservoir heterogeneity and provide a practical basis for 3-D modeling and development planning in structurally complex carbonate settings.关键词
塔里木盆地/深层-超深层/断控缝洞型储层/储集体结构/控制机理Key words
Tarim Basin/deep to ultra-deep/fault-controlled fracture-cavity reservoir/reservoir structure/control mechanism分类
能源科技引用本文复制引用
ZHANG Haowei,LIU Yuming,HOU Jiagen,LIU Haochen,CHEN Qi,LIU Peipei..走滑断裂带差异变形及内部结构特征对碳酸盐岩缝洞型储层的控制机理研究—以塔里木盆地富满地区FⅠ6断裂带为例[J].石油科学通报,2025,10(6):1152-1166,15.
