摘要
苏仁诺尔油田位于复杂断陷盆地,具有储层预测难、油水关系认识不清等特点,本文应用油藏描述方法,根据录井、测井、地震及试油等资料,通过对研究区南屯组的单井油水平面分布、连井油藏剖面和地震剖面等进行分析,研究了该地区南屯组的油水分布特征及主控因素.研究表明,苏仁诺尔油田苏301区块南屯组油层主要分布在南一段顶部一油组(n1-1)和南二段底部二油组(n2-2).根据南一段各油组烃源岩厚度、南一段和南二段之间的不整合面、南屯组各油组的油水分布特征,以及三者之间的空间匹配关系,认为苏仁诺尔油田苏301区块n1-1油组为主力烃源岩,生成的油气储存在n1-1油组,并逐渐向东西两侧高部位运移至n2-2油组,形成岩性油藏.综合分析认为,苏301区块南屯组油水分布特征受构造-岩性控制,烃源岩、砂体分布共同控制了该地区南屯组的油水分布特征.该认识将指导该地区开发,为下一步勘探、开发部署及扩边开发提供了方向和思路.
Surennuoer oilfields locates in a complicated faulted basin,which is characterized by the hard reservoirprediction and a complex relationship between oil and water.Based on the analysis of logging,well logging,seismicdata and oil testing data by using reservoir description methods,this paper focuses on Nantun formation in Su301block of Surennuoer oilfield to study the oil-water distribution and the related main controlling factors.The planardistribution of oil and water based on single wells are analyzed,as well as the well-tie oil reservoir profiles andrelated seismic sections.Study shows that the oil layers of Nantun formation are mainly located at the top of the1stmember of Nantun formation(n1-1)and at the bottom of2nd member of Nantun formation(n2-2).The studiedblock is a less faulted area with n1-1being the main source rock,and there is a local unconformity between the n1and n2members.Through a combined analysis of the thickness map of n1-1source rock,the location of thelocal unconformity,the characteristics of oil-water distribution of each oil layer in Nantun formation,and the spatialrelationship between these three aspects,we propose that hydrocarbons in Su301block are mainly generated in n1-1oil layer and firstly stored in situ.Then the hydrocarbons migrates updip to the higher east and west positions,forming lithological reservoirs in n2-2oil layer.Comprehensive analysis shows that the distribution of oil-water ismainly structure-lithology controlled.Hydrocarbon source rock and sandbody distribution jointly control the oil andwater distribution of the Nantun formationin in Su301block.This understanding guides further exploration of thisregion and provids direction and ideas for next exploration deployment,exploitation deployment and extension development.
作者
苗秀青
薛海涛
杨金秀
卢双舫
刘爽
薛松
李晨晖
MIAO Xiuqing;XUE Haitao;YANG Jinxiu;LU Shuangfang;LIU Shuang;XUE Song;LI Chenhui(School of Geosciences,China University of Petroleum(East China),Qingdao 266580,Shandong China;Petro China Tarim Oilfield Company,Korla 841000,Xinjiang China)
出处
《河南科学》
2017年第3期437-445,共9页
Henan Science
基金
国家自然科学基金(41406050)
山东省优秀中青年科学家科研奖励基金(BS2014HZ001)
中央高校基本科研业务费专项资金(14CX02119A)
中国石油大学科研启动基金(2014010570)
关键词
苏仁诺尔油田
苏301区块
岩性油藏
油水分布
主控因素
Surennuoer oilfield
Su 301 block
lithologic reservoir
oil/water distribution
controlling factors
