川西致密气藏二维核磁共振测井优化设计与应用

doi:10.11938/cjmr20182613

波谱学杂志 ›› 2018, Vol. 35 ›› Issue (2): 234-242.doi: 10.11938/cjmr20182613

• 低场磁共振技术与应用专栏 • 上一篇下一篇

川西致密气藏二维核磁共振测井优化设计与应用

张世懋^1,2, 张哨楠¹, 葛祥², 吴见萌²

1. 西南石油大学, 油气藏地质及开发工程国家重点实验室, 四川成都 610500;
2. 中国石化西南石油工程有限公司测井分公司, 四川成都 610100

收稿日期:2018-01-05 出版日期:2018-06-05 发布日期:2018-02-02
通讯作者: 张世懋,Tel:13688086577,E-mail:itinyfull@163.com E-mail:itinyfull@163.com
基金资助:
国家科技重大专项（2016ZX05002-005）.

Optimal Design and Application of Two-Dimensional NMR Logging in Chuanxi Tight Gas Reservoir

ZHANG Shi-mao^1,2, ZHANG Shao-nan¹, GE Xiang², WU Jian-meng²

1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, SWPU, Chengdu 610500, China;
2. Well Logging Branch of Sinopec Xinan Oilfield Service Corporation, Chengdu 610100, China

Received:2018-01-05 Online:2018-06-05 Published:2018-02-02

摘要/Abstract

摘要： 二维核磁共振（NMR）测井在储层参数计算与流体性质判别应用中的作用逐渐受到重视.然而在川西致密气藏开展二维NMR测井应用之初，遇到了现有观测模式下资料采集效率较低、测井结果与地质条件不匹配等难题.通过对比两种常用的二维NMR测井方法，开展致密气藏二维NMR测井观测模式设计方法研究，结合致密气藏实际应用效果分析，明确了横向弛豫时间-纵向弛豫时间（T₂-T₁）方法比横向弛豫时间-自扩散系数（T₂-D）方法更适用于致密气藏，总结了一套致密气藏二维NMR测井观测模式设计流程与参数取值方法，设计出了适用于致密气藏的观测模式TGR01（tight gas reservoir 01）.新设计的观测模式在致密气藏的应用效果优于现有的二维NMR测井观测模式，结合T₂-T₁方法可以有效识别储层中的流体信号，解决致密气藏综合评价难题.

关键词: 低场核磁共振, 观测模式设计, 二维核磁共振测井, 致密气藏, 测井综合评价

Abstract: Two-dimensional nuclear magnetic resonance (2D NMR) logging has been increasingly used in the reservoir modeling and fluid identification. A series of problems were encountered when applying the technique in the Chuanxi gas field, including poor efficiency in logging data collection and mismatch between the logging evaluation and reservoir properties. By comparing two commonly-used 2D NMR logging intersection methods and analyzing in-field results, we optimized the design. It was found the T₂-T₁ method was more suitable than the T₂-D method for tight reservoir evaluation. The activation set TGR01 (tight gas reservoir 01) derived from the optimized method, was shown to be superior to the existing method for the tight gas reservoir. At the same time, the T₂-T₁ intersection method was found to be able to identify different fluids effectively, and applicable to the evaluation of tight gas reservoir.

Key words: low-field NMR, activation sets design, 2D NMR logging, tight gas reservoir, logging evaluation

中图分类号:

O482.53

张世懋, 张哨楠, 葛祥, 吴见萌. 川西致密气藏二维核磁共振测井优化设计与应用[J]. 波谱学杂志, 2018, 35(2): 234-242.

ZHANG Shi-mao, ZHANG Shao-nan, GE Xiang, WU Jian-meng. Optimal Design and Application of Two-Dimensional NMR Logging in Chuanxi Tight Gas Reservoir[J]. Chinese Journal of Magnetic Resonance, 2018, 35(2): 234-242.

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川西致密气藏二维核磁共振测井优化设计与应用

Optimal Design and Application of Two-Dimensional NMR Logging in Chuanxi Tight Gas Reservoir

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