吉林大学学报(地球科学版) ›› 2016, Vol. 46 ›› Issue (1): 23-35.doi: 10.13278/j.cnki.jjuese.201601103

• 地质与资源 • 上一篇    下一篇

准噶尔盆地玛北地区三叠系百口泉组储层成岩作用及孔隙演化

陈波1,2, 王子天3, 康莉4, 张顺存1, 史基安1   

  1. 1. 甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室, 兰州 730000;
    2. 中国科学院大学, 北京 100049;
    3. 中国石油新疆油田公司勘探开发研究院, 新疆克拉玛依 834000;
    4. 中国石油新疆油田公司风城油田作业区, 新疆克拉玛依 834000
  • 收稿日期:2015-04-19 出版日期:2016-01-26 发布日期:2016-01-26
  • 作者简介:陈波(1985),男,博士研究生,主要从事油气储层地质学及油气藏开发研究,E-mail:cbo-11@163.com
  • 基金资助:

    国家重点基础研究发展规划("973")项目(2011CB201104);国家科技重大专项项目(2011ZX05000-01-06);甘肃省重点实验室专项项目(1309RTSA041)

Diagenesis and Pore Evolution of Triassic Baikouquan Formation in Mabei Region,Junggar Basin

Chen Bo1,2, Wang Zitian3, Kang Li4, Zhang Shuncun1, Shi Ji'an1   

  1. 1. Key Laboratory of Petroleum Resources, Gansu Province/Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay 834000, Xinjiang, China;
    4. Fengcheng Field Operation District, Xinjiang Oilfield Company, PetroChina, Karamay 834000, Xinjiang, China
  • Received:2015-04-19 Online:2016-01-26 Published:2016-01-26
  • Supported by:

    Supported by the State Key Development Program for Basic Research of China (2011CB201104), National Science and Technology Major Project (2011ZX05000-01-06) and Gansu Province Key Laboratory of Special Project(1309RTSA041)

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摘要：

以岩心观察和铸体薄片鉴定为基础,结合扫描电镜以及测井和录井等资料综合分析,对准噶尔盆地玛北地区三叠系百口泉组储层的岩石学及物性特征、成岩作用及孔隙演化规律进行了研究。研究结果显示:研究区砂砾岩储层成分成熟度和结构成熟度均较低,孔隙类型主要为粒间溶蚀孔,储层物性较差,属于低孔低渗储层;储层埋藏较深,成岩作用复杂,成岩演化阶段主要处于晚成岩B期,经历了压实作用、胶结作用、溶蚀作用等多种成岩作用。压实作用为造成储层原生孔隙减少的主要因素,储层原始孔隙因压实作用损失平均达19.5%;其次为胶结作用,造成孔隙度减少平均为7.2%;而易溶组分发生的溶蚀作用形成的次生孔隙则有效地改善了储层的物性。研究区溶蚀作用增加的孔隙度约为5.2%,溶蚀作用形成的次生孔隙发育带成为研究区低孔低渗背景下发育的优质储层富集带。

关键词: 准噶尔盆地, 玛北地区, 三叠系, 百口泉组, 储层成岩作用, 孔隙演化

Abstract:

Base on core observation and casting thin section, combining with the analysis on scanning-electron microscope, as well as the comprehensive logging and mud logging data, the characteristics of reservoir sandstone, physical property, diagenesis, and pore evolution of the Triassic Baikouquan Formation in Mabei region,Junggar basin were studied. The results show that the study area of sand-conglomerate reservoir is low in composition, structure maturity, porosity, and permeability; and the pore types are mainly intergranular dissolution pores. The reservoir buried deeply in the study area, and the Triassic Baikouquan Formation in Mabei region is mainly formed in the late diagenetic stage B period, experienced complex diagenesis, including mainly compaction,cementation,dissolution. The compaction is the main factor that caused the original porosity reduction,By 19.5%,and cementation decreased the porosity for about 7.2%; while dissolution is constructive to the reservoir property as it can generate a great quantity of secondary porosity. Dissolutionin increased the porosity for about 5.2%. The secondary porosity zone formed by dissolution has become a high-quality reservoir zone with the background of low porosity and permeability in the study area.

Key words: Junggar basin, Mabei region, Triassic, Baikouquan Formation, diagenesis, pore evolution

中图分类号: 

  • P618.13

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