塔里木盆地肖尔布拉克剖面下丘里塔格组层序地层及其油气勘探意义

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英文篇名：SEQUENCE STRATIGRAPHY AND ITS CONTROL ON BURIAL KARSTIFICATION DOLOSTONE RESERVOIR IN THE UPPER CAMBRIAN XIAQIULITAGE FORMATION AT XIAO’ERBULAKE SECTION,TARIM BASIN 中文刊名：地层学杂志 英文刊名：Journal of Stratigraphy 作者：陈永权 ; 周新源 ; 杨海军 ; 潘文庆 ; 李国会 英文作者：CHEN Yong-quan ; ZHOU Xin-yuan ; YANG Hai-jun ; PAN Wen-qing and LI Guo-huiTarim Oil Field Company Exploration and Development Research Institute ; Korla 841000 中文关键词：层序地层 ; 埋藏岩溶型储层 ; 下丘里塔格组 ; 寒武系 ; 塔里木盆地 ; 新疆 英文关键词：sequence stratigraphy ; burial karstification ; Xiaqiulitage Formation ; Cambrian ; Tarim Basin ; Xinjiang 出版日期：2010-01-15 机构：中国石油塔里木油田分公司勘探开发研究院; 年：2010 期：01 出版单位：地层学杂志

摘要

塔里木盆地晚寒武世台地沉积区发育大量的白云岩,其中蕴涵着大量白云岩储层。以柯坪地区肖尔布拉克剖面为例,首次提出了以地层单层厚度为划分依据划分层序地层的方法,结合岩石学分析结果,确定了肖尔布拉克剖面寒武系下丘里塔格组白云岩的层序地层四分方案,塔中地震资料表明该四分方案可能适用于塔里木盆地整个西部台地区。根据肖尔布拉克剖面下丘里塔格组白云岩的岩石学分析,埋藏岩溶作用产生的溶蚀空间为该白云岩段的主要储集空间,因此可将下丘里塔格组白云岩储层定义为"埋藏岩溶型白云岩储层",该储层发育位置与层序界面有密切关系,一般沿层序界面之下发育。根据上寒武统白云岩的层序地层四分方案,与层序地层对储层的控制作用,提出了塔里木盆地西部台地区上寒武统"埋藏岩溶型复式白云岩储层"概念,并给予了阐释。
We studied the sequence stratigraphy of dolostone strata in the Upper Cambrian Xiaqiulitage Formation at the Xiao’erbulake profile in the northwestern Tarim Basin. The variation of bed thickness was used to divide sequence stratigraphic units, and the results were supported by petrologic and sedimentary facies analyses. Our data show that four sequences can be distinguished in the Xiaqiulitage Formation at the Xiao’erbulake section. According to the petrology of the dolostone reservoir at the Xiao’erbalake section, the main type of reservoir is the "burial karstification reservoir", and the position of reservoir lies just under the sequence boundary. Therefore, "Upper Cambrian burial karstification muti-reservoirs" may have implications for oil exploration in the whole western platform of the Tarim Basin.

引文

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