田泽普,刘波,高计县

• 1:北京大学地球与空间科学学院
• 2:中国石油勘探开发研究院

摘要(Abstract)：

中东地区白垩系Mishrif组主要由富含生物碎屑的颗粒泥晶灰岩及泥晶颗粒灰岩组成。基于薄片研究了伊拉克鲁迈拉油田Mishrif组碳酸盐岩中生物碎屑特征及其成岩作用的相异性特点,并总结了生屑成岩作用差异性特征对储层的影响。该区Mishrif组重要的生物碎屑有三大类,即双壳类、棘皮类和有孔虫类。这些生物碎屑主要经历了同生阶段的泥晶化和大气淡水溶蚀作用,中-浅埋藏期的压实压溶、充填胶结、新生变形等多期成岩作用。泥晶化作用主要发生在有孔虫壳体外壁;溶蚀作用更易发生在双壳类和有孔虫壳体中。胶结作用在不同类别生物碎屑上的表现形式不同,且对储层中早期孔隙的破坏强烈。不同类别生物碎屑的结构、大小、成分的差异造成了成岩作用的差异并进而影响储层物性。

关键词(KeyWords)： 资源地层学;岩石地层学;碳酸盐岩;生物碎屑;成岩作用;Mishrif组;白垩系;鲁迈拉油田;伊拉克

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气股份有限公司科研项目“伊拉克鲁迈拉油田Mishrif组碳酸盐岩储层非均质性研究”资助

作者(Author): 田泽普,刘波,高计县

DOI: 10.19839/j.cnki.dcxzz.2016.01.004

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