塔里木盆地塔北隆起轮南低凸起断裂与深层油气勘探  

The faults and deep petroleum exploration in the Lunnan lower uplift of the Tabei rise,Tarim Basin

作　　者：李洪辉[1] 曹颖辉[1] 陈志勇[1] 杨敏[1] 赵一民[1] 董洪奎 闫磊[1] 杜德道[1] 王珊[1] 刘伟[1] 徐兆辉[1] 马德波[1] 朱光有[1] 陈秀艳[1] 杨鹏飞[2] LI Hong-hui;CAO Ying-hui;CHEN Zhi-yong;YANG Min;ZHAO Yi-min;DONG Hong-kui;YAN Lei;DU De-dao;WANG Shan;LIU Wei;XU Zhao-hui;MA De-bo;ZHU Guang-you;CHEN Xiu-yan;YANG Peng-fei(Research Institute of Exploration and Development,PetroChina,Beijing 100083,China;Research Institute of Exploration and Development,Tarim Oilfield Company,PetroChina,Korla 841000,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油塔里木油田公司勘探开发研究院,新疆库尔勒841000

出　　处：《天然气地球科学》2020年第12期1677-1686,共10页Natural Gas Geoscience

基　　金：中国石油天然气股份有限公司“十三五”重大科技项目“古老碳酸盐岩油气成藏分布规律与关键技术”(编号:2019B-04B2);中国石油天然气股份有限公司科技项目“塔里木盆地寒武—奥陶系新层系新领域成藏条件与有利区带评价”(编号:kt2018-02-01)联合资助。

摘　　要：塔里木盆地轮南低凸起历经多期构造及成藏演化,开展断裂性质及其封闭性研究尤为重要,这决定该区下一步油气勘探领域和方向。从构造演化入手,系统研究了该区主要断裂形成期次、组合样式、性质及规模,结合已发现油气藏的原油密度、干燥系数、含蜡量等油气相态指标及它们在平面上的分布特点,对该区主要断裂的开启及封闭性进行了分析。研究认为轮南低凸起发育轮南、桑塔木、轮古东、轮西、轮古西和轮台等6条规模较大断裂,除轮古东断裂现今仍具有开启性外,其余断层现今均为封闭性,尤其是轮古西断裂,晚海西期之后就已经停止活动,具有封闭性,有利于深层油气的保存。轮古西地区深层寒武系膏盐岩之下区域是下一步油气勘探的有利方向。The Lunnan lower uplift has experienced complex tectonic evolution and hydrocarbon accumulation.The nature and sealing capacity of the faults are significant for hydrocarbon accumulation and the study on the potential and direction of the future petroleum exploration.After a fairly understood about the regional tectonics,the faulting phases,deformation styles,nature and scale of the faults in the Lunnan lower uplift were studied systematically.Combined with the previous petroleum chemical study results,and the oil-gas distribution characteristics,the opening-sealing history of the faults in the Lunnan lower uplift is carefully analyzed in this paper.According to our study,the Lunnan,Sangtamu,Lungu East and Lunxi faults are the main faults in the Lunnan Lower uplift.All of them are closed at present,except the Lungu East fault which is the only one in the main faults is opening now.Especially the Lungu West fault was dead since late Hercynian period.This fault characteristics are in favour of the preservation of the deep oil-gas reservoir in Lunnan.Therefore,the Cambrian infra salt series in the Lungu West area is the favorable direction in the future petroleum exploration.

关 键 词：走滑断裂 断裂封闭性 油气相态 深层 中浅层 膏盐岩层 

分 类 号：TE122.1[石油与天然气工程—油气勘探]