涠西南凹陷南斜坡流二段成藏条件新认识及勘探实践

发布时间：2018-06-01 06:41

本文选题：涠西南凹陷 + 流二段　；参考：《中国海上油气》2017年05期

【摘要】：储层和油气运移条件是制约北部湾盆地涠西南凹陷南斜坡流二段油气勘探的两大关键问题。利用钻井、FMI成像测井、岩心、分析化验、地震重处理等资料对涠西南凹陷南斜坡流二段物源体系、沉积相类型、古地貌特征以及沉积体系展布特征进行了综合分析,认为该区发育西南物源长源三角洲砂体;同时通过断裂特征、圈闭的形成以及烃源岩生排烃史和油气输导体系进行时空匹配综合分析,认为构造高部位的超覆圈闭群发育早期形成的常压油藏,中部断阶带的断块圈闭群后期近源形成超压油藏。这些创新认识指导了该地区流二段勘探取得重大突破,对北部湾盆地具有相似成藏背景的其他凹陷的后续勘探具有一定的指导和借鉴意义。
[Abstract]:Reservoir and hydrocarbon migration conditions are the two key problems restricting oil and gas exploration in the second stage of flow section of South Slope in Wei Southwest Sag of Beibu Bay Basin. Based on the data of FMI imaging logging, core analysis and seismic reprocessing, the source system, sedimentary facies, paleogeomorphology and distribution of sedimentary system on the south slope of Wei Southwest Sag are comprehensively analyzed. It is considered that there is a long source delta sand body developed in the southwest of the area, and through fault characteristics, trap formation, hydrocarbon generation and expulsion history of hydrocarbon source rocks and hydrocarbon transport system, the space-time matching comprehensive analysis is carried out. It is considered that the overpressure reservoirs formed early in the overlying trap group in the high structural position and the fault block trap group in the middle fault terrace formed near the source in the late stage. These innovative understandings have guided the exploration of the second member of the flow Basin to make a major breakthrough and have certain guiding and referential significance for the subsequent exploration of other sag with similar reservoir forming background in the Beibu Gulf Basin.
【作者单位】：中海石油(中国)有限公司湛江分公司;
【基金】：“十三五”国家科技重大专项“南海西部海域低渗油藏勘探开发关键技术(编号:2016ZX05024-006)”部分研究成果
【分类号】：P618.13

【相似文献】