微幅度构造与岩性圈闭识别技术及应用

Micro-range structure and lithologic traps identification technique and its application

齐家北地区成藏条件复杂,多与断层小幅度构造和岩性有关,其主要的油藏类型是岩性油气藏和复合油气藏。岩性油气藏与微幅度构造油气藏规模小,识别和预测难度大,对技术条件要求高。因此,结合单井钻探资料和地震资料,应用微幅度构造圈闭与岩性圈闭识别技术在齐家北工区发现圈闭33个,有效地指导了井位部署和储量计算工作。

North Qijia area is a promising oil producing depression. With abundant oil source, reasonable arrangement of source, accumulation and trap and preferable reservoir property, the middle and bottom combination formation has a nice hydrocarbon prospect. However, the formation condition is very complicated, mostly related to fault and lithology. Based on the study of former data, the main hydrocarbon types of the area are lithologic hydrocarbon and complicated hydrocarbon. Because of the small scale, to identify and forecast the lithology and micro-range structural hydrocarbon is very difficult. From the factual data, combining the drilling information and seismic data, applying the micro-range structural trap and lithologic trap identifying technique, the study discovered 33 traps in north Qijia area, giving effective guidance to well planning and reserves calculation.