务中地区沙四下段油气藏特征及主控因素研究  

Characterization and Key Controlling-Factors of Reservoir in the Lower Sha4 of Wuzhong

作　　者：薛辉 肖博雅 徐乐 窦连彬 胡晨光 

机构地区：[1]中国石油华北油田分公司,河北任丘062552

出　　处：《特种油气藏》2018年第1期30-35,共6页Special Oil & Gas Reservoirs

基　　金：中国石油天然气股份有限公司重大科技专项"华北油田上产稳产800万吨关键技术研究与应用"(2014E-35)

摘　　要：针对务中地区沙四下段油气藏特征复杂,主控因素不明等问题,利用地质、地震、测井、分析化验等资料,对该区的油气藏特征和富集因素进行研究。认为沙四下段油气藏在平面上表现为"串珠状",即分布零散、连片性差;纵向上沿断层呈"牙刷状",即多油气藏叠合发育,各油气藏具有各自独立的油水系统和温压系统。沙四下段油气藏受烃源岩、输导体系、温压系统等多种因素控制,烃源岩控制了油气藏的分布范围和富集程度,输导体系控制了油气运聚成藏方式和分布层位,温压系统影响流体聚集相态和富集区带。该研究对务中地区沙四下段下一步油气勘探和目标优选具有一定的指导意义。The geology, seismic, logging, test and other data are used to characterize the hydrocarbon reservoir and identify hydrocarbon enrichment factors in the lower Sha4 of Wuzhong. It is considered that the reservoir in the lower Sha4 is featured by ＂beads-shaped＂ in the plane, that is scattered distribution with poor continuity . It is ＂looth-brush-shaped＂ along the fault in the longitudinal direction, that is superimposed multi-reservoir with independent oil-water and temperature-pressure systems for each reservoir. The reservoir in the lower Sha4 is mainly controlled by a variety of factors such as source-rock, migration systern, temperature-pressure system, etc. The sourve-rock controls the reservoir distribution anti hydrocarbon enrichment, the migration system affects the hydrocarbon accu- mulation pattern and aceumulation horizon, and the temperature-system influences the hydrocarbon aceumulation phase and enrichment zone. This research could provide certain guidance for the further hydroearbnn exploration and target seleetio, in the lower Sha4 of Wuzhong.

关 键 词：油气藏特征 烃源岩 输导体系 温压系统 务中地区 

分 类 号：TE121.2[石油与天然气工程—油气勘探]