缅甸睡宝盆地南部地区渐新统储层次生孔隙形成机理分析

谢楠, 姜烨, 朱光辉, 李爱山, 蔡文杰, 吕栋, 聂志勐

doi:10.11764/j.issn.1672-1926.2010.02.289

天然气地球科学 >

2010 , Vol. 21 >Issue 2: 289 - 294

DOI: https://doi.org/10.11764/j.issn.1672-1926.2010.02.289

天然气地质学

缅甸睡宝盆地南部地区渐新统储层次生孔隙形成机理分析

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中海油研究总院，北京100027

谢楠（1980-），女，四川富顺人，工程师，硕士，主要从事沉积学和储层地质学研究.

收稿日期: 2010-01-11

修回日期: 2010-02-04

网络出版日期: 2010-04-10

基金资助

中海石油（中国）有限公司科技攻关项目（编号：2009-HW-03-1）资助.

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The Mechanism of Secondary Porosity in Oligocene Reservoir in Southern Shwebo Basin, Myanmar

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CNOOC Research Institute, Beijing 100027，China

Received date: 2010-01-11

Revised date: 2010-02-04

Online published: 2010-04-10

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摘要

在对大量薄片分析鉴定的基础上，结合区域构造运动、盆地埋藏史和有机质热演化史，对睡宝盆地古近系储层次生孔隙类型和成因机制进行了研究。分析认为碳酸盐等组分的溶蚀、构造运动以及这两者之间的匹配是次生孔隙形成的主导因素。晚渐新世构造挤压运动导致渐新统地层抬升暴露，酸性大气淡水在表生淋滤阶段溶解岩石颗粒之间方解石胶结物，形成次生溶孔。始新统储层虽然存在有机质热演化过程中产生的酸性流体的溶蚀作用，但是由于有机酸流动受阻，并未形成广泛的次生孔隙。

关键词： 古近系; 次生孔隙; 成因机制; 成岩作用; 构造运动; 缅甸

本文引用格式

谢楠, 姜烨, 朱光辉, 李爱山, 蔡文杰, 吕栋, 聂志勐 . 缅甸睡宝盆地南部地区渐新统储层次生孔隙形成机理分析[J]. 天然气地球科学, 2010 , 21(2) : 289 -294 . DOI: 10.11764/j.issn.1672-1926.2010.02.289

Abstract

Based on petrographic microscope examinations, regional tectonic evolution and basin burial history in Shwebo basin, Myanmar, type and mechanism of secondary pores of Paleogene reservoir is discussed. The major factors controlling development of secondary porosity included dissolution of acidic components (such as carbonate), tectonic activity and matching of them. The structural compression in late Oligocene caused the uplift of the Oligocene strata and explore, then the calcite cement between grains was dissolved through supergene leaching of acidic atmospheric water, and the secondary porosity was formed. Although the acidic fluid was generated during thermal evolution of organic matter, the secondary porosity in Eocene reservoir can not be generated because of block of organic acid flow.

Key words： Paleogene; Secondary porosity; Mechanism; Diagenesis; Tectonic activity; Myanmar.

参考文献

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