摘要
近年,在塔里木盆地顺南地区多条北东向走滑断裂钻遇好的油气成果,证实了走滑断裂具有控储、控藏的作用。受埋深大、信噪比低、断裂纵向断距小等因素影响,小断裂及裂缝发育区地震响应不清、描述困难。在顺南三维实际资料的基础上,分灰岩顶面及内幕两类模型开展数值正演模拟,明确不同尺度断裂地震响应特征并建立地震识别模式;依据走滑断裂地质特征及地震识别模式,分级优选了趋势面、精细相干、蚂蚁体和最大似然体等敏感技术;依据断裂预测成果从断裂性质、断裂级别、断裂分段性和缝洞发育特征等方面开展走滑断裂带描述与评价,总结认识指导区带及目标优选。
There are many oil and gas discoveries along NE-trending strike-slip faults in Shunnan area,Tarim Basin,indicating that the strike-slip faults can be a controlling factor for hydrocarbon migration and accumulation. Considering deep burial depth,low signal-to-noise ratio and small fault displacement along the faults strike,seismic responses of small fault and fracture zones are not clear and difficult to be interpreted. Based on the actual three-dimensional seismic data of the Shunnan area,we carried out the numerical simulation for two models,model of limestone top surface and model of limestone internal surfaces. We also clarified seismic response characteristics for faults of different scales and established seismic identification model. According to the geological features and seismic recognition pattern of strike-slip faults,we selected sensitive seismic attributes such as trend surface,fine coherent,ant body and likelihood. Finally,based on the results of fracture prediction,the paper gave a description and evaluation on the strike-slip fault zone,such as fracture properties,levels,segmentation,and cavity features,and gave advice to the optimization of exploration plays and prosepects.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
2017年第4期703-710,共8页
Oil & Gas Geology
基金
国家科技重大专项(2016ZX05005005-005)
关键词
数值模拟
走滑断裂
碳酸盐岩
顺南地区
塔里木盆地
numerical simulation
strike-slip fault
carbonate rock
Shunnan area
Tarim Basin
