应用可变T2截止值确定束缚水饱和度

J4 ›› 2010, Vol. 40 ›› Issue (6): 1491-1495.

应用可变T₂截止值确定束缚水饱和度

苏俊磊¹|王艳²|孙建孟¹

1.中国石油大学地球资源与信息学院|山东东营 257061;2.大庆石油管理局测井公司|黑龙江大庆 163412

收稿日期:2009-12-21 出版日期:2010-11-26 发布日期:2010-11-26
作者简介:苏俊磊(1984-)|男|山东聊城人|博士研究生|主要从事测井信息处理与解释工作|E-mail:sujunlei2008@163.com
基金资助:
国家“863”计划项目（2006AA060105）

Application of Variable T₂ Cutoff Value to Determine Irreducible Water Saturation

SU Jun-lei¹, WANG Yan², SUN Jian-meng¹

1.College of Geo-Resources and Information, China University of Petroleum, Dongying, Shandong 257061, China;
2.Well Logging Company, Daqing Petroleum Adminstration Bureau|Daqing|Heilongjiang 163412|China

Received:2009-12-21 Online:2010-11-26 Published:2010-11-26

摘要/Abstract

摘要：

为了得到准确的束缚水饱和度数据，以T₂截止值模型为基础，分别用基于经验固定T₂截止值、经验可变T₂截止值及渗透率Coates模型的可变T₂截止值3种方法确定束缚水饱和度，利用常规岩心分析实验数据验证其计算精度。结果表明，基于渗透率Coates模型的可变T₂截止值计算核磁束缚水饱和度精度最高，与常规岩心分析束缚水饱和度平均相对误差为9.5%，而且此方法可确定Coates模型中的地区经验系数C、m、n，提高了核磁渗透率的计算精度。

关键词: 核磁共振测井, 葡萄花油组, T₂截止值, 束缚水饱和度

Abstract:

Based on T₂ cutoff value model, to determine the irreducible water saturation we used three kinds of variable T₂ cutoff value method，a fixed cutoff value of experience, experience variable T₂ cutoff value, and the Coates permeability model, and comparative analysis has been done in order to get accurate result. Additionally, experimental data with conventional core analysis verified the accuracy. The results indicated that the average relative error between the irreducible water saturation computed by variable T₂ cutoff value based on Coates permeability model and irreducible water saturation got by conventional core analysis is 9.5%. Additionally this method can be used to determine Coates model of regional experience in the coefficient of C, m, n and improve the accuracy of NMR permeability.

Key words: NMR logging, Putaohua reservoir, T₂ cutoff value, irreducible water saturation

中图分类号:

P631.8

苏俊磊, 王艳, 孙建孟. 应用可变T₂截止值确定束缚水饱和度[J]. J4, 2010, 40(6): 1491-1495.

SU Jun-lei, WANG Yan, SUN Jian-meng. Application of Variable T₂ Cutoff Value to Determine Irreducible Water Saturation[J]. J4, 2010, 40(6): 1491-1495.

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应用可变T₂截止值确定束缚水饱和度

Application of Variable T₂ Cutoff Value to Determine Irreducible Water Saturation

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