伊硕;黄文辉;万欢;

• 1:中国地质大学(北京)能源学院

• 2:中国地质大学(北京)海相储层演化与油气富集机理教育部重点实验室

摘要(Abstract)：

塔里木盆地奥陶系碳酸盐岩古岩溶作用十分发育,且古岩溶典型发育区差异性明显。在塔里木盆地奥陶系岩溶研究成果基础上,划分塔里木盆地奥陶系岩溶类型,分析古岩溶发育的控制因素,研究塔北、塔中和塔西南岩溶发育区的古岩溶储层差异及其机理。结果表明:(1)塔里木盆地奥陶系岩溶具有期次多、类型丰富等特征,储层可以划分为潜山型和内幕型,并细分为潜山岩溶、顺层岩溶、层间岩溶、同生岩溶、埋藏岩溶及复合型岩溶。(2)岩溶储层的控制因素主要包括构造因素和沉积因素,其中构造因素主要体现为构造活动、古地貌格局及断裂等,沉积因素主要体现为沉积相、岩性及其组合。(3)塔北、塔中和塔西南岩溶发育区奥陶系的岩溶储层发育的规模、类型及油气富集特征存在巨大差异,其中塔北地区以潜山型(风化壳)岩溶和层间岩溶为主,其次为埋藏岩溶,岩溶规模最大;塔中地区以埋藏岩溶为主,潜山岩溶、同生岩溶及层间岩溶也较为发育,岩溶规模较大;塔西南地区岩溶储层整体欠发育,以层间岩溶为主,岩溶规模较小。构造因素和沉积因素的差异是控制塔里木盆地古岩溶差异的主控因素。

关键词(KeyWords)：古岩溶差异;控制因素;碳酸盐岩;奥陶系;塔里木盆地

Abstract:

Keywords:

基金项目(Foundation):国家重点基础研究发展计划(973计划)项目(2014CB238901);; 中央高校基本科研业务费(2-9-2016-116)

作者(Author):伊硕;黄文辉;万欢;

Email:

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