岩性油气藏 ›› 2019, Vol. 31 ›› Issue (4): 42–53.doi: 10.12108/yxyqc.20190405

• 油气地质 • 上一篇    下一篇

致密砂岩气藏黏土矿物特征及其对储层性质的影响——以鄂尔多斯盆地苏里格气田为例

任大忠1,2, 周兆华3, 梁睿翔4, 周然5, 柳娜6,7, 南郡祥6,7   

  1. 1. 西安石油大学 石油工程学院, 西安 710065;
    2. 西北大学 大陆动力学国家重点实验室, 西安 710069;
    3. 中国石油勘探开发研究院 廊坊分院, 河北 廊坊 065007;
    4. 中国石油长庆油田分公司 第八采油厂, 西安 710021;
    5. 中国石油川庆钻探工程有限公司 钻采工程技术研究院, 西安 710021;
    6. 低渗透油气田勘探开发国家工程实验室, 西安 710018;
    7. 中国石油长庆油田分公司 勘探开发研究院, 西安 710018
  • 收稿日期:2019-01-28 修回日期:2019-03-24 出版日期:2019-07-21 发布日期:2019-06-21
  • 第一作者:任大忠(1985-),男,博士,讲师,主要从事油气田地质与开发方面的教学与研究工作。地址:(710065)陕西省西安市电子二路东段18号西安石油大学。Email:petro_gas@163.com。
  • 基金资助:
    国家自然科学基金青年基金项目"致密砂岩油藏成岩-烃类充注时序对微纳米孔隙结构的约束机制及石油充注孔喉下限研究"（编号：41702146）、中国博士后科学基金项目"致密砂岩油藏微纳米孔喉非均质性对流体赋存状态影响"（编号：2018M643554）及"十三五"国家重大科技专项"大型油气田及煤层气开发"子课题"致密气储层物理参数及孔隙动用界限研究"（编号：2016ZX05047-003-005）联合资助

Characteristics of clay minerals and its impacts on reservoir quality of tight sandstone gas reservoir: a case from Sulige Gas Field,Ordos Basin

REN Dazhong1,2, ZHOU Zhaohua3, LIANG Ruixiang4, ZHOU Ran5, LIU Na6,7, NAN Junxiang6,7   

  1. 1. College of Petroleum Engineering, Xi'an Shiyou University, Xi'an 710065, China;
    2. State Key Laboratory of Continental Dynamics, Northwest University, Xi'an 710069, China;
    3. Langfang Branch of PetroChina Research Institute of Petroleum Exploration and Development, Langfang 065007, Hebei China;
    4. No.8 Oil Production Plant, PetroChina Changqing Oilfield Company, Xi'an 710021, China;
    5. Drilling and Production Technology Research Institute, CNPC Chuanqing Drilling Engineering Company Limited, Xi'an 710021, China;
    6. National Engineering Laboratory for Exploration and Development of Low-Permeability Oil & Gas Fields, Xi'an 710018, China;
    7. Research Institute of Petroleum Exploration and Development, PetroChina Changqing Oilfield Company, Xi'an 710018, China
  • Received:2019-01-28 Revised:2019-03-24 Online:2019-07-21 Published:2019-06-21

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摘要： 为了研究致密砂岩气藏的储层性质，以X射线衍射定量评价黏土矿物赋存特征为基础，结合铸体薄片、扫描电镜、高压压汞及核磁共振等资料，对鄂尔多斯盆地苏里格气田二叠系盒8段致密砂岩气藏15块黏土矿物样品进行了物性特征、孔隙结构及可动流体的影响因素等研究。结果表明：伊利石（体积分数为3.07%）及高岭石（体积分数为1.86%）是研究区主要的黏土矿物；黏土矿物本身发育丰富的微-纳米级孔隙，并贡献部分储集空间，同时也是论证次生溶蚀孔隙形成的间接证据；绿泥石主要起到晚期充填破坏孔隙的作用，伊利石及伊/蒙混层的大量出现会破坏储层性质；可动流体修正参数将孔隙表面亲水性考虑在内，突出了亲水性黏土与可动流体赋存特征的关系（R2>0.70）。该项研究提供了致密砂岩气藏黏土矿物与储层性质耦合关系的新视角，可为生产实践提供理论指导。

关键词: 黏土矿物, 储层性质, 致密砂岩气藏, 二叠系, 鄂尔多斯盆地

Abstract: In order to study the reservoir properties of tight sandstone gas reservoirs,based on quantitative evaluation of clay mineral occurrence by X-ray diffraction,combined with the data of thin sections(TS),scanning electron microscopy(SEM),pressure-controlled mercury intrusion(PCMI)and nuclear magnetic resonance (NMR),physical properties,pore structure and factors affecting movable fluids were studied on 15 clay mineral samples from tight sandstone gas reservoir of the Permian He 8 member in Sulige Gas Field,Ordos Basin. The results show that illite(3.07%)and kaolinite(1.86%)are typical clay mineral in the study area. The clay minerals could provide abundant pore space and were the indirect evidence of the appearance of dissolved pores. Chlorite filled the pores,and a large number of illite and I/S mixed layer would also deteriorate reservoir properties. Movable fluid parameters took the hydrophilic minerals on the pore surface into account,highlighting the relationship between hydrophilic clay and occurrence characteristics of movable fluid(R2>0.70). This research provides insights into studying the coupling relationship between clay minerals and reservoir quality and theoretical basis and practical guidance for the gas production.

Key words: clay minerals, reservoir quality, tight sandstone gas reservoir, Permian, Ordos Basin

中图分类号: 

  • TE122.2
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