利用常规测井资料基于岩石物理和多矿物分析反演横波速度

邵才瑞; 印兴耀; 张福明; 宋明水

利用常规测井资料基于岩石物理和多矿物分析反演横波速度

1.
中国石油大学地球资源与信息学院, 山东东营 257061
2.
中石化胜利油田有限公司勘探项目管理部, 山东东营 257001

基金项目: 中石化“十一·五”重大科技攻关项目

详细信息

作者简介:
邵才瑞(1966-), 男, 博士, 副教授, 从事地球物理测井信息处理教学及科研工作.Email: shaocr@hdpu.edu.cn

中图分类号: P584;P631.4
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- 被引次数: 0
出版历程
- 收稿日期: 2008-06-28
- 刊出日期: 2009-07-25

Shear Wave Velocity Inversion with Routine Well Logs Based on Rock Physics and Multi-Mineral Analysis

1.
Faculty of Geo-Resource & Information, China University of Petroleum, Dongying 257061
2.
Department of Exploration Administration, ShengliOilfield, SINOPEC, Dongying 257001

摘要

摘要: 测井横波速度是测井地震联合反演的重要标定参数.为克服大量老井缺少横波速度资料和现有横波速度估算方法的不足, 基于孔隙介质岩石物理理论, 通过常规测井资料求取多矿物组分, 利用VRH模型求得地层的等效弹性模量; 最后利用纵波速度作为约束条件, 根据Biot-Gassmann方程得到地层横波速度.计算结果与实测结果对比表明, 平均相对误差限在5%左右, 与Xu-White模型相比, 该方法物理意义更为明确, 使用更简便, 计算精度提高一倍左右.
- 岩石物理 /
- 测井资料 /
- 多矿物分析 /
- Biot-Gassmann方程 /
- 横波速度 /
- 地球物理
Abstract: The shear wave velocity of well log is an important parameter for mutual inversion, but lots of wells are short of this value.As present estimation method can't calculate the shear velocity precisely, based on rock physics, using VRH model this paper firstly calculates the equivalent elastic modulus via multi-mineral analysis from routine well logs, and then by taking compressional velocity as a constraint, calculates the shear wave velocity based on Biot-Gassmann equations.The method has clearer physics meaning, and practice results show that this method is much more convenient, economic and precise than Xu-White methods, and the error between computational value and measured value is less than 5 percent.
- rock physics /
- well logs data /
- multi-mineral analysis /
- Biot-Gassmann equation /
- shear wave velocity /
- geophysics.

HTML全文

图 1 A井4 415~4 470 m砂泥简化模型与Xu-White模型对比

Fig. 1. Comparison of Xu-White and simplified multi-mineral mode for well A at 4 415-4 470 m

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图 2 A井3 000~4 470m不同模型与测井值交会对比(图例下同)

a.VS-XVS交会图; b.VS-MVS交会图; MVS.多矿物模型; XVS.Xu-White模型; VS.测井结果

Fig. 2. Comparison of Xur White and multi-mineral mode VS log data for well A at 3 000-4 470m

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图 3 B井3 370~3 795m不同模型与测井值交会对比

Fig. 3. Comparison of Xu-White and multi-mineral mode VS log data for well B at 3 370-3 795m

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图 4 C井4 705~5 050m不同模型与测井值交会对比

Fig. 4. Comparison of Xu-White and multi-mineral mode VS log data for well C at 4 075-5 050m

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图 5 A井3 880~3 945m多矿物模型与Xu-White模型结果对比

Fig. 5. Comparison of Xu-White mode and multi-mineral mode for well A at 3 880-3 945m

下载: 全尺寸图片幻灯片

表 1 多矿物地层组分体积模型

Table 1. Multi-mineral mode of formation

表 2 计算地层波速所用矿物组分参数

Table 2. Parameters for formation velocity calculation

表 3 单矿物砂泥组分模型不同方法平均相对误差限比较

Table 3. Average relative error band comparison of different method under sand-shale mode

表 4 多矿物组分析法与Xu-White砂泥模型平均相对误差限比较

Table 4. Average relative error band comparison of multi-mineral mode and Xu-White sand-shale mode

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