特种油气藏2018，Vol.25Issue(2)：19-24,6.DOI:10.3969/j.issn.1006-6535.2018.02.004
塔里木盆地轮古西地区奥陶系断裂特征及其对油气富集的控制作用
Ordovician Fault Properties and Its Effect on Hydrocarbon Enrichment in Western Lungu of Tarim Basin
摘要
Abstract
The latest 3D seismic data is used to improve the Ordovician fault interpretation in the Lunnan ancient buried-hill western Lungu of Tarim Basin by combining with the regional tectonic setting. A fine fault characteriza-tion of provided by referring the fault distribution pattern of the adjacent Tahe on the plane and referring multi-layer seismic attributes in the vertical direction. Research indicates that the Ordovician faults in western Lungu can be classified as Middle-Late Caledonian and Hercynian according to their development time and also can classified as Grade-I,Grade-II and Grade-III according to the fault scale. The fault greatly controls the buried-hill geomor-phology,ravine drainage system and karst reservoirs,and then affect the hydrocarbon enrichment.The effect of fault on hydrocarbon enrichment mainly includes the longitudinal hydrocarbon migration channel controlled by the Grade-I and part of Grade-II faults. The paleogeomorphology is controlled by the Grade-I and part of Grade-II faults to dominate the planar predominant migration direction of hydrocarbon. The Grade-III and other part of Grade-II faults control the development and distribution of carbonate fracture-cave reservoir by affecting karstification. This finding could provide certain guidance for the exploration and development of carbonate reservoirs in the western Lungu.关键词
断裂/岩溶储层/油气富集/碳酸盐岩/轮古西地区/塔里木盆地Key words
fault/karst reservoir/hydrocarbon enrichment/carbonate/western Lungu/Tarim Basin分类
能源科技引用本文复制引用
罗枭,刘俊锋,张磊,王娜,程林..塔里木盆地轮古西地区奥陶系断裂特征及其对油气富集的控制作用[J].特种油气藏,2018,25(2):19-24,6.基金项目
中国石油科技重大专项"塔里木油田勘探开发关键技术研究与应用"(2014E-21-05) （2014E-21-05）
