叠前同步反演技术在渤海海域QHD29-2区块油气预测中的应用
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摘要
针对渤海海域QHD29-2区块主要含油气层段埋深大、地震资料纵向分辨率低,采用叠前AVO同步反演技术对该区块进行储层预测.通过精细的岩石物理分析,选取反映目的层段岩性和流体敏感的弹性参数进行交会分析.结果表明:泊松阻抗(PI)属性为目标区岩性敏感弹性参数;拉梅常数为最敏感流体弹性参数,能够有效判别储层的流体性质.在此基础上进行叠前AVO同步反演,预测QHD29-2区块东营组三段流体的展布范围,预测结果与评价井D井实钻情况吻合,证实该反演方法具有实用性和有效性.
The main target in the QHD29-2 area in Bohai Sea was buried deeply with low-resolution data.Then the pre-stack simultaneous inversion method was used to identify reservoir and its fluid properties.Based on detailed analysis on the petrophysical characteristics,we carried out detailed cross-plot analysis of different elastic parameters from well logs in the main target.The result shows that PI attribute can recognize the main reservoir of QHD29-2 area and Lambda attribute can predict the fluid properties.A good application effects was achieved by using this method to the distribution range of fluid inthe 3rd member of Dongying Formation in QHD29-2 area.Actual drilling of QHD29-2-D well designed according to the method in the paper consistent with the inversion results.And it is proved that the practicality and efficiency of hydrocarbon detection can be achieved with this method.
The main target in the QHD29-2 area in Bohai Sea was buried deeply with low-resolution data.Then the pre-stack simultaneous inversion method was used to identify reservoir and its fluid properties.Based on detailed analysis on the petrophysical characteristics,we carried out detailed cross-plot analysis of different elastic parameters from well logs in the main target.The result shows that PI attribute can recognize the main reservoir of QHD29-2 area and Lambda attribute can predict the fluid properties.A good application effects was achieved by using this method to the distribution range of fluid inthe 3rd member of Dongying Formation in QHD29-2 area.Actual drilling of QHD29-2-D well designed according to the method in the paper consistent with the inversion results.And it is proved that the practicality and efficiency of hydrocarbon detection can be achieved with this method.
引文
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[14]伊万顺,陈绪清,徐海,等.叠前道集地层约束反演技术在砂砾岩储层预测中的应用[J].大庆石油学院学报,2009,33(2):27-29.
[15]李录明.多波AVA及岩性预测[J].石油地球物理勘探,1996,31(4):190-204.
[16]张永江,轩义华,秦成岗.岩石物理分析在番禺天然气区含气性研究中的应用[J].石油物探,2010,49(4):407-414.
[17]王云专,余杰,赵洪波,等.利用AVO效应反演泊松比和储层厚度[J].大庆石油学院学报,2001,25(4):1-3.
[18]宁忠华,贺振华,黄德济.基于地震资料的高灵敏度流体因子[J].石油物探,2006,45(3):239-242.
[2]Connolly P.Elastic impedance[J].The Leading Edge,1999,18(4):438-452.
[3]Whitecombe D N,Connolly P A,Reagan R L,et al.Extended elastic impedance for fluid and lithology prediction[J].Geophysies,2002,67(1):63-67.
[4]李爱山,印兴耀,张繁昌,等.叠前AVA多参数同步反演技术在含气储层预测中的应用[J].石油物探,2007,46(1):64-68.
[5]高建荣,滕吉文,李明,等.AVO流体反演理论与实践[J].石油勘探与开发,2006,33(5):558-561.
[6]王云专,李素华,朱伦,等.基于AVO正演模拟的泊松比反演[J].大庆石油学报学报,2006,30(1):7-10.
[7]管路平.地震叠前反演与直接烃类指示的探讨[J].石油物探,2008,47(3):228-234.
[8]Quakenbush M,Shang B,Tuttle C.Poisson impedance[J].The Leading Edge,2006,25(2):128-138.
[9]曹谊.一种新的地震属性——泊松阻抗[J].油气地球物理,2009,7(2):50-53.
[10]孙喜新.泊松阻抗及其在平湖砂岩气藏检测中的应用[J].石油地球物理勘探,2008,43(6):699-703.
[11]陈学国,徐仁,穆星.相对泊松比分析技术在平湖地区中深层砂岩气藏检测中的应用[J].油气地质与采收率,2007,14(1):63-65.
[12]刘伟,曹思远.基于地震资料的三种岩性流体预测方法对比分析[J].地球物理学进展,2008,23(6):1918-1923.
[13]杨文采.地球物理反演理论和方法[M].北京:地质出版社,1997.
[14]伊万顺,陈绪清,徐海,等.叠前道集地层约束反演技术在砂砾岩储层预测中的应用[J].大庆石油学院学报,2009,33(2):27-29.
[15]李录明.多波AVA及岩性预测[J].石油地球物理勘探,1996,31(4):190-204.
[16]张永江,轩义华,秦成岗.岩石物理分析在番禺天然气区含气性研究中的应用[J].石油物探,2010,49(4):407-414.
[17]王云专,余杰,赵洪波,等.利用AVO效应反演泊松比和储层厚度[J].大庆石油学院学报,2001,25(4):1-3.
[18]宁忠华,贺振华,黄德济.基于地震资料的高灵敏度流体因子[J].石油物探,2006,45(3):239-242.
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