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伊拉克米桑油田碳酸盐岩储层成岩作用
引用本文:张义楷,王志松.伊拉克米桑油田碳酸盐岩储层成岩作用[J].科学技术与工程,2016,16(5):45-53.
作者姓名:张义楷  王志松
作者单位:中国海洋石油国际公司伊拉克有限公司,中海油能源发展股份有限公司工程技术分公司
摘    要:为研究伊拉克米桑油田Mishrif组碳酸盐岩储层发育特征、成岩作用及储层主控因素,通过分析岩心、岩石薄片、铸体薄片和实验分析资料,进行了岩性特征、储集空间类型、沉积相特征和物性特征等储层特征研究,成岩作用以及储层主控因素研究。研究结果表明储集空间类型主要为溶蚀孔(洞),储层物性为中孔-中低渗;Mishrif组经过多种成岩作用:压实作用、溶蚀作用、充填作用、胶结作用、白云石化作用、重结晶作用、生物泥晶化作用;储层主控因素:沉积环境控制粒间孔、生物骨架孔等原生孔隙的发育。早期的胶结作用导致储层致密而溶蚀作用改善了储集性能;构造运动形成的裂缝既可形成溶蚀孔,又可成为油气储渗的空间和通道。

关 键 词:碳酸盐岩  储层特征  成岩作用  Mishrif组
收稿时间:2015/10/9 0:00:00
修稿时间:2015/12/14 0:00:00

Carbonate Reservoir Characteristics and Diagenesis in Missan Oilfield, Iraq
ZHANG Yi-kai;WANG Zhi-song;SHI Chang-lin;LI Zhi-ming;ZHANG Xue-min.Carbonate Reservoir Characteristics and Diagenesis in Missan Oilfield, Iraq[J].Science Technology and Engineering,2016,16(5):45-53.
Authors:ZHANG Yi-kai;WANG Zhi-song;SHI Chang-lin;LI Zhi-ming;ZHANG Xue-min
Affiliation:ZHANG Yi-kai;WANG Zhi-song;SHI Chang-lin;LI Zhi-ming;ZHANG Xue-min;CNOOC International Limited,CNOOC Iraq Limited;CNOOC Ener Tech-Drilling & Production Co.;
Abstract:In order to better understand reservoir characteristics of Iraq Missan Oilfield, we study Mishrif group carbonate reservoir characteristics, diagenesis and reservoir main controlling factors. Through the analysis of core, rock slice, casting slice and experiment data, study the reservoir characteristics such as the lithology characteristics, reservoir space types, sedimentary phase characteristics and physical characteristics and so on, diagenesis and reservoir controlling factors. The results show that the reservoir space is mainly dissolved pore, reservoir physical property is medium porosity and low permeability. And the Mishrif group obtain a variety of diagenesis, including compaction, denudation, packing action, cementation, dolomitization, rejuvenation of crystals, biological mud crystallization. Main controlling factors of reservoir as follows: depositional environment control the development of primary pore which consists of organic framework pore, intergranular pore and so on. Early cementation led to reservoir quality damage and dissolution improved reservoir property and fractures caused by tectonic movement not only generate dissolution pore but also can be turn into migration pathway.
Keywords:carbonate rocks  reservoir characteristics  diagenesis  Mishrif Formation
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