准噶尔盆地腹部石南21井油藏再认识

发布时间：2018-05-09 07:13

本文选题：准噶尔盆地 + 石南井　；参考：《新疆石油地质》2017年06期

【摘要】：继准噶尔盆地腹部石南21井中侏罗统头屯河组获得规模发现之后,后续勘探未获重大突破。通过对石南21井头屯河组油藏的重新分析后认为,输导断裂和岩性是制约油气勘探是否有重大发现的2大关键因素。通过对新部署高精度三维地震资料的精细解释,对输导断裂和岩性目标开展精细研究,基本落实了2期2组输导断裂的展布,沿基东凸起两翼发现多期坡折带,坡折带上倾方向泥岩整体遮挡,侧向分支河道分隔成藏,其中东翼受3期坡折带控制,发育多期超覆砂体,与断裂形成良好匹配,后续勘探规模较大,在此基础上开展岩性目标精细刻画,为下步钻探目标的落实提供依据。
[Abstract]:After the discovery of scale of Middle Jurassic Toutunhe formation in Shinan 21 well in the abdomen of Junggar Basin, no major breakthrough was made in subsequent exploration. Based on the reanalysis of Toutunhe formation reservoir in well 21, it is concluded that the fault and lithology are the two key factors restricting the discovery of oil and gas exploration. Through the fine interpretation of the newly deployed high precision 3D seismic data and the fine study of the transport faults and lithologic targets, the distribution of 2 groups of transmissive faults was basically carried out, and the multi-stage slope break zone was found along the two wings of the eastern uplift. The sloping direction of slope break zone is covered by mudstone as a whole, and the lateral branch channel is separated to form reservoir. The middle east wing is controlled by the third stage slope break zone, and the multi-stage overlying sand body is developed, which matches well with the fault, and the scale of subsequent exploration is large. On this basis, the fine lithologic target characterization is carried out, which provides the basis for the implementation of the next drilling target.
【作者单位】：中国石油集团东方地球物理勘探有限责任公司研究院;中国石油新疆油田分公司勘探开发研究院;
【基金】：国家科技重大专项(2017ZX05001) 中国石油科技重大专项(2017E-0411)
【分类号】：P618.13

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