缝洞型油藏致密基质灰岩的压力敏感性规律的NMR研究

doi:10.11938/cjmr20170210

波谱学杂志 ›› 2017, Vol. 34 ›› Issue (2): 206-213.doi: 10.11938/cjmr20170210

• 低场磁共振技术与应用专栏 • 上一篇下一篇

缝洞型油藏致密基质灰岩的压力敏感性规律的NMR研究

刘中春¹, 程倩¹, 刘乃贵², 周杨³, 房涛⁴, 朱涛涛³, 王为民³

1. 中国石油化工股份有限公司石油勘探开发研究院, 北京 100083;
2. 中国科学院地质与地球物理研究所, 北京 100029;
3. 北京大学信息科学技术学院, 量子电子学研究所, 北京 100871;
4. 中国石油大学地球科学与技术学院, 山东青岛 266580

收稿日期:2016-04-07 修回日期:2017-04-20 出版日期:2017-06-05 发布日期:2017-06-05
通讯作者: 王为民Tel:010-62755054,E-mail:wmw@pku.edu.cn. E-mail:wmw@pku.edu.cn
基金资助:
国家科技重大专项资助项目（2016ZX05014-004-001）；国家自然科学基金资助项目（61531002）；国家重点基础研究发展计划（“973计划”）资助项目（2015CB250902）.

NMR On-Line Measurement of Stress Sensitivity of Tight Matrix Limestone Cores in a Karstic Reservoir

LIU Zhong-chun¹, CHENG Qian¹, LIU Nai-gui², ZHOU Yang³, FANG Tao⁴, ZHU Tao-tao³, WANG Wei-min³

1. Research Institute of Petroleum Exploration & Production, SINOPEC, Beijing 100083, China;
2. Institute of Geology & Geophysics, Chinese Academy of Science, Beijing 100029, China;
3. Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China;
4. School of Geosciences & Technology, China University of Petroleum, Qingdao 266580, China

Received:2016-04-07 Revised:2017-04-20 Online:2017-06-05 Published:2017-06-05

摘要/Abstract

摘要： 相比于常规储层，缝洞型油藏灰岩储具有集体结构复杂、缝洞尺度差异大、裂缝起主要沟通作用等特点，使用常规方法研究其流动特性和流体分布规律异常困难．该文采用自行研制的核磁共振（NMR）在线驱替装置对塔河奥陶系油藏15块致密基质灰岩岩芯进行了压力敏感性实验，获得了高压及流动状态下岩芯的横向弛豫时间（T₂）谱变化情况．在此基础上分析了灰岩在压敏实验过程中微裂缝尺寸、孔隙度及渗透率的变化规律，并与常规测试分析结果进行了对比．结果表明：NMR在线检测技术可以定量测量岩芯孔隙及微裂缝的变化，为岩芯渗透率变化规律提供微观解释．

关键词: 低场核磁共振(low-field NMR), 压敏性, 致密基质灰岩, 渗透率, 横向弛豫时间(T₂)谱

Abstract: Compared to the conventional reservoirs, karstic carbonate reservoir has more complex structure, larger difference in the size of fracture cavity, and the property that the fracture functioning mainly as a way for communication. It is difficult to study flow characteristics and distribution in karstic carbonate reservoir with the conventional methods. In this paper, we had built an on-line NMR instrument to test the stress sensitivity of 15 Tahe Oilfield tight matrix limestone cores. The T₂ spectrum was measured at each stage. On the basis of the T₂ spectra measured, the pore size, porosity and permeability changes of the limestone rocks were determined. It was shown that the on-line NMR measurement technology can be employed in the laboratory tests to provide microscopic information on the changes of core permeability.

Key words: stress sensitivity, T₂ spectrum, permeability, low-field NMR, tight matrix limestone

中图分类号:

O482.53

刘中春, 程倩, 刘乃贵, 周杨, 房涛, 朱涛涛, 王为民. 缝洞型油藏致密基质灰岩的压力敏感性规律的NMR研究[J]. 波谱学杂志, 2017, 34(2): 206-213.

LIU Zhong-chun, CHENG Qian, LIU Nai-gui, ZHOU Yang, FANG Tao, ZHU Tao-tao, WANG Wei-min. NMR On-Line Measurement of Stress Sensitivity of Tight Matrix Limestone Cores in a Karstic Reservoir[J]. Chinese Journal of Magnetic Resonance, 2017, 34(2): 206-213.

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缝洞型油藏致密基质灰岩的压力敏感性规律的NMR研究

NMR On-Line Measurement of Stress Sensitivity of Tight Matrix Limestone Cores in a Karstic Reservoir

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