[1]侯学理,廖广志,朱万里,等.一种新型井下偏心核磁共振测井仪探测器设计与实现[J].测井技术,2019,43(03):273-277.[doi:10.16489/j.issn.1004-1338.2019.03.010]
　HOU Xueli,LIAO Guangzhi,ZHU Wanli,et al.Design and Implementation of a New Probe for Eccentric Downhole NMR Logging Tool[J].WELL LOGGING TECHNOLOGY,2019,43(03):273-277.[doi:10.16489/j.issn.1004-1338.2019.03.010]
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一种新型井下偏心核磁共振测井仪探测器设计与实现()
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《测井技术》[ISSN:1004-1338/CN:61-1223/TE]

卷:
第43卷
期数:
2019年03期
页码:
273-277
栏目:
测井仪器
出版日期:
2019-06-30

文章信息/Info

Title:
Design and Implementation of a New Probe for Eccentric Downhole NMR Logging Tool
文章编号:
1004-1338(2019)03-0273-05
作者:
侯学理1; 2;  廖广志2; 3;  朱万里1; 2;  钟剑1;  王雷1;  郭瑛1
(1.中国石油集团测井有限公司技术中心, 陕西 西安 710077; 2.油气资源与探测国家 重点实验室, 北京 120049; 3.中国石油大学(北京), 北京 102249)
Author(s):
HOU Xueli1; 2;  LIAO Guangzhi2; 3;  ZHU Wanli1; 2;  ZHONG Jian1;  WANG Lei1;  GUO Ying1
(1. Technology Center, China Petroleum Logging CO. LTD., Xi'an, Shaanxi 710077, China; 2. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China; 3. China University of Petroleum, Beijing 102249, China)
关键词:
核磁共振测井;  永磁体;  天线;  静磁场;  射频磁场;  自旋回波
Keywords:
NMR logging;  permanent magnet;  antenna;  static magnetic field;  RF magnetic field;  spin echo
分类号:
P631.84
DOI:
10.16489/j.issn.1004-1338.2019.03.010
文献标志码:
A
摘要:
核磁共振测井技术作为同时评价储层孔隙特征和流体识别的方法,具有独特的优越性。在实际应用中,井下居中型核磁共振测井仪探测深度受到井眼尺寸的影响,尤其当井眼钻井液电导率较高时,仪器将无法采集到可靠的有用信号。井下偏心核磁共振测井仪可有效解决上述问题。介绍了一种新型的井下偏心核磁共振测井仪探测器结构,通过数值模拟技术对探测器结构进行优化,并完成了实物制作。通过对探测器加工工艺探索,有效降低了天线涡流损耗和振铃的影响,并成功在实验水箱中获取到了核磁共振回波信号。
Abstract:
NMR logging technology has unique advantages as the only method to simultaneously evaluate reservoir pore characteristics and fluid identification. In practical applications, the radial investigation depth of centered downhole nuclear magnetic logging tools is affected by the size of the wellbore, especially when the conductivity of the wellbore mud is high, the probe will not be able to receive reliable useful signals. Eccentric downhole NMR logging tools can effectively solve the above problems. This paper introduces a new type of probe structure for eccentric downhole NMR logging tools. The structure of the probe was optimized by numerical simulation technology and the physical production was completed. By exploring the processing technology of the probe, the effect of eddy current loss and ringing of the antenna are effectively reduced, and the nuclear magnetic resonance echo signals are successfully obtained in the water tank.

参考文献/References:

[1] 廖广志, 肖立志, 侯学理, 等. 井下核磁共振仪器关键技术与应用 [J]. 中国化工装备, 2016(增刊): 452-456. [2] 肖立志, 谢然红, 廖广志. 中国复杂油气藏核磁共振测井理论与方法 [M]. 北京: 科学出版社, 2012. [3] 胡法龙, 肖立志. 核磁共振测井仪典型探头设计分析 [J]. 石油机械, 2006, 34(8): 76-79. [4] 陈晓光, 聂在平, 聂小春. 核磁共振成像装置磁场的数值模拟 [J]. 电子科技大学学报, 1995, 24(4): 387-391. [5] 赵岩松, 张一鸣, 夏平畴. 核磁共振测井系统中的主要电磁场问题的讨论 [J]. 电工技术学报, 1999, 14(5): 74-80.

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备注/Memo

备注/Memo:
基金项目: 中国石油天然气集团公司科学研究与技术开发项目(2019B-3708); 国家科技重大专项(2017ZX05019002-005) 作者简介: 侯学理,男,1982年生,博士研究生,高级工程师,从事核磁共振测井技术研究。E-mail:houxueli@cnpc.com.cn
更新日期/Last Update: 2019-08-30