石油勘探与开发 >

2019 , Vol. 46 >Issue 2: 302 - 311

DOI: https://doi.org/10.11698/PED.2019.02.10

油气勘探

伊拉克H油田Mishrif组储集层含油性差异主控因素分析

  • 赵丽敏 ,
  • 周文 ,
  • 钟原 ,
  • 郭睿 ,
  • 金值民 ,
  • 陈延涛
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  • 1.成都理工大学,成都 610051;
    2.中国石油勘探开发研究院,北京 100083;
    3.西南油气田公司勘探开发研究院,成都 610041;
    4.油气藏地质及开发工程国家重点实验室 西南石油大学,成都 610500;
    5.中国石油碳酸盐岩储层重点实验室沉积-成藏研究室 西南石油大学,成都 610500
赵丽敏（1972-）,女,吉林扶余人,成都理工大学能源学院,中国石油勘探开发研究院高级工程师,主要从事开发地质研究、开发生产管理等方面的工作。地址：北京市海淀区学院路20号,中国石油勘探开发研究院中东所,邮政编码：100083。Email：zhaolimin@petrochina.com.cn

收稿日期: 2018-10-11

  网络出版日期: 2019-02-13

基金资助

“十三五”国家科技重大专项（2017ZX05032004-001）; 国家自然科学基金（41502115）

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Control factors of reservoir oil-bearing difference of Cretaceous Mishrif Formation in the H oilfield, Iraq

  • ZHAO Limin ,
  • ZHOU Wen ,
  • ZHONG Yuan ,
  • GUO Rui ,
  • JIN Zhimin ,
  • CHEN Yantao
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  • 1.Chengdu University of Technology, Chengdu 610051, China;
    2.Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China;
    3.Research Institute of Petroleum Exploration and Development, Southwest Oil and Gas Field Company, PetroChina, Chengdu 610041, China;
    4.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China;
    5.Branch of Deposition and Accumulation, PetroChina Key Laboratory of Carbonate Reservoir, Southwest Petroleum University, Chengdu 610500, China

Received date: 2018-10-11

  Online published: 2019-02-13

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摘要

为揭示中东上白垩统碳酸盐岩储集层含油性规律并明确其控制因素,对伊拉克H油田白垩系Mishrif组进行综合分析。基于研究区取心井岩心观察描述、铸体薄片分析、物性及孔喉结构参数统计等,结合前期已取得的成果认识,指出Mishrif组取心段含油非均质性较强,可划分出富含—饱含油、油浸、油斑、油迹4种含油级别,宏观上含油级别具有明显的相控特征,不同含油级别中含油相对饱满的区域均呈现出岩溶发育强度较大,物性及孔喉结构较好的特征。研究认为,沉积微环境及早成岩期岩溶作用决定了伊拉克H油田Mishrif组储集层含油性宏观分布特征,而早成岩期岩溶作用导致的部分孔喉结构改善是储集层微观含油性出现差异的重要原因,并最终建立了储集层发育及含油性差异成因模式。图10表2参32

关键词： 碳酸盐岩储集层; 早成岩期岩溶; 储集层含油性; Mishrif组; 上白垩统; 伊拉克

本文引用格式

赵丽敏 , 周文 , 钟原 , 郭睿 , 金值民 , 陈延涛 . 伊拉克H油田Mishrif组储集层含油性差异主控因素分析[J]. 石油勘探与开发, 2019 , 46(2) : 302 -311 . DOI: 10.11698/PED.2019.02.10

Abstract

To reveal the law of oiliness of the Upper Cretaceous carbonate reservoirs in the Middle East and factors controlling the oiliness, the Mishrif Formation of the H oilfield in Iraq was examined comprehensively. Based on core observation and description, casting thin section analysis, and statistics of physical property and pore-throat structure parameter, etc., in combination with previous achievements and understanding, it is pointed out that the coring interval of Mishrif Formation has strong oiliness heterogeneity, and can be divided into 4 grades, oil rich, oil immersed, oil spot, and oil trace; the oil-bearing grade has obvious facies-controlled characteristic in macroscopic view; and in different oil-bearing grades, relatively oil-rich sections present higher karst development intensity, better physical properties and pore-throat structure characteristics. It is concluded through the study that the sedimentary microenvironment and eogenetic karstification determine the macroscopic oiliness of the reservoir in Mishrif Formation of H Oilfield, and the improvement of pore-throat structure caused by eogenetic karstification is the decisive factor of the micro oil-bearing difference of the reservoir. Finally, the genetic model of reservoir development and oil-bearing difference was established.

Key words： carbonate reservoirs; eogenetic karstification; reservoir oiliness; Mishrif Formation; Upper Cretaceous; Iraq

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