摘要
西湖凹陷L地区位于平湖构造带北部,工区内断裂系统复杂,勘探证实总体呈现“小、断、贫、散”的特征,前期以构造高点的勘探思路及目标评价技术与斜坡带复杂成藏条件极不适应,严重束缚了西斜坡北部勘探潜力的释放,现逐步转向了构造-岩性复合油气藏勘探。在开展构造精细解释的基础上,重新梳理L地区断裂系统,系统总结了该地区断裂构造类型、几何学特征、成因演化及其差异控沉控圈效应,为下一步沉积体系精细研究、岩性及复合圈闭分区分带识别奠定基础,推动该区后续的高效勘探。
The L Area of Xihu Sag is located in the northern part of the Pinghu Tectonic Belt,with a complex fault system in the working area,which has been proved to be“small,faulted,poor and scattered”in general.Previous exploration strategies focused on structural highs and target evaluation techniques were poorly adapted to the complex reservoir formation conditions of the slope belt,severely constraining the unlocking of exploration potential in the northern part of the western slope.Current efforts are gradually shifting toward structural-lithological composite reservoir exploration.Based on detailed structural interpretation,this study reorganized the fault system in the L Area,systematically summarized the fault structure types,geometric characteristics,and genetic evolution,and analyzed their differential effects on subsidence and trap formation.This work provides a solid foundation for detailed sedimentary system analysis,lithologic identification,and the delineation of composite trap zones,thereby promoting more efficient subsequent exploration in this area.
作者
朱宝衡
袁忠鹏
石方平
王嘉琪
晏玉环
ZHU Baoheng;YUAN Zhongpeng;SHI Fangping;WANG Jiaqi;YAN Yuhuan(Institute of Exploration and Development,Shanghai Offshore Oil&Gas Company,SINOPEC,Shanghai 200120,China)
出处
《复杂油气藏》
2025年第4期412-419,共8页
Complex Hydrocarbon Reservoirs
关键词
断裂系统
复合圈闭
成因演化
勘探潜力
西湖凹陷
fracture system
composite trap
genetic evolution
exploration potential
Xihu Sag
