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[1]赵静,冯春珍,王艳梅,等.核磁共振敏感参数在低对比度油层识别中的应用[J].测井技术,2019,43(03):316-322.[doi:10.16489/j.issn.1004-1338.2019.03.018]
 ZHAO Jing,FENG Chunzhen,WANG Yanmei,et al.Application of Sensitive NMR Parameters in Oil-water Identification of Low-contrast Reservoirs[J].WELL LOGGING TECHNOLOGY,2019,43(03):316-322.[doi:10.16489/j.issn.1004-1338.2019.03.018]
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核磁共振敏感参数在低对比度油层识别中的应用()
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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:
316-322
栏目:
解释评价
出版日期:
2019-08-30

文章信息/Info

Title:
Application of Sensitive NMR Parameters in Oil-water Identification of Low-contrast Reservoirs
文章编号:
1004-1338(2019)03-0316-07
作者:
赵静 冯春珍 王艳梅 郭红梅 王琪 徐磊
(中国石油集团测井有限公司长庆分公司, 陕西 西安 710201)
Author(s):
ZHAO Jing FENG Chunzhen WANG Yanmei GUO Hongmei WAGN Qi XU Lei
(Changqing Branch, China Petroleum Logging CO. LTD., Xi'an, Shaanxi 710201, China)
关键词:
测井解释 低对比度油层 核磁共振测井 T2谱敏感参数 综合含油指数 油水识别
Keywords:
log interpretation low-contrast reservoir NMR Logging T2 spectrum sensitive parameter comprehensive oil index oil-water identification
分类号:
P631.84
DOI:
10.16489/j.issn.1004-1338.2019.03.018
文献标志码:
A
摘要:
鄂尔多斯盆地姬塬地区延长组长×储层为低对比度油层,油水关系复杂,矿化度较低且变化大,发育大量高电阻率水层,常规油水识别难,解释符合率较低。通过储层特征与油水识别难点分析,在岩石物理实验的基础上,明确核磁共振T2谱形态特征的主要影响因素,提出了基于核磁共振T2谱的半幅点偏移量、离散度、右翼展幅、拖尾面积等多个反映流体性质的敏感参数。综合应用敏感参数加权组合,建立了基于核磁共振敏感参数的油水定量识别标准。应用于20口井,解释符合率明显提升,形成了阵列感应+核磁共振测井系列,解决了低对比度油层的识别问题,取得良好地质应用效果。
Abstract:
The low-contrast Chang × reservoir in the Jiyuan area, the Ordos Basin, has complex oil-water relations, low and variable water salinity and many high-resistivity water layers. It is difficult to identify OWC and the logging interpretation coincidence rate is low. In this paper, based on petrophysics experiments, the influencing factors on NMR T2 spectrum morphology are identified, and then sensitive NMR parameters for fluid properties are proposed, such as half-amplitude point offset, dispersion, right wring amplitude and tailing area of NMR T2 Spectra. Finally a quantitative oil-water identification standard is established based on the sensitive parameters. Application in 20 wells proved the coincidence rate improved obviously. It is useful to identify oil layers in low-contrast reservoirs. The geological application is achievable.

参考文献/References:

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备注/Memo

备注/Memo:
第一作者: 赵静,女,1974年生,高级工程师,从事测井解释及研究工作。E-mail:[email protected]
更新日期/Last Update: 2019-08-30