塔里木盆地满加尔坳陷库刹克构造特征及含油气分析

库刹克构造叠合面积 160 km2 ,是塔里木盆地满加尔坳陷北部的“洼中隆”,拱褶高大 ,生、储、盖层组合配套 ,三层圈闭良好 ,属具有含油气前景的局部构造。满加尔坳陷生油气潜能巨大。但是 ,在库刹克构造上钻探的满 1井与满加尔坳陷内打的 10多口超深井 ,均未获得工业油气流。从油气源层、圈闭与储集空间、油气运移通道与巨厚隔层、油气成熟期与圈闭有效期配置等四个方面探讨了未获油气之原因 ,提示在满加尔坳陷腹地 ,相对较浅部位及周边断裂发育部位寻找寒武系和下奥陶统的原生油气藏

KUWSHAK STRUCTURE IN MANJAR DEPRESSION OF TARIM BASIN AND HYDROCARBON PERTENTIAL

Kuwshak structure with a closing area of160 km2 is a large"upheaval of the sag"in the north of Manjar downwarping.Itowns a complete set of source- reservior- roof rocks with hydrocarbon potential.The Manjar downwarping has a great potential of hydrocarbon generation,but no industrial oil- gas flow has been obtained in Well Man1#drilled in the Kuwshak structure and in over10 super- deep wells drilled in the Man- jar downwarping.The causes are discussed from aspects of oil- gas source beds,trapping and storing space, oil- gas migration channel and thick proofing layers,oil- gas maturity stage and allocation of effective trapping stage,suggesting the searching of primary oil- gas pool of the Cambrian and Lower Ordovician at the relative- ly shallow layers and surrounding places with faults developed.