随钻地震技术在套管下入深度确定中的应用
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摘要
介绍了随钻地震(SWD)技术基本原理和现场信息处理方法,给出了利用SWD采集数据进行地层压力计算的理论模型。结合某试验井SWD技术现场使用情况,阐述了SWD技术在异常高压预测方面的应用过程,以及如何利用SWD处理结果来为技术套管下入深度选择提供依据。试验井应用实践表明,SWD技术可以用来预测井下的异常高压和埋藏深度,能够为确定探井的套管下入深度提供重要的科学依据。
The basic principle and information treatment methods of seism while drilling(SWD) technology in field were introduced,and the theoretical calculation model of formation pressure by SWD data was given.Interacted with the field application in a test well,the application of SWD technology on overpressure forecast and how to use SWD treatment result to give foundation for choosing casing setting depth were elaborated.The application result indicates that the overpressure and buried depth underground could be forecasted by SWD technology,which can provide important basis for choosing casing setting depth in exploration well.
The basic principle and information treatment methods of seism while drilling(SWD) technology in field were introduced,and the theoretical calculation model of formation pressure by SWD data was given.Interacted with the field application in a test well,the application of SWD technology on overpressure forecast and how to use SWD treatment result to give foundation for choosing casing setting depth were elaborated.The application result indicates that the overpressure and buried depth underground could be forecasted by SWD technology,which can provide important basis for choosing casing setting depth in exploration well.
引文
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[2]SEREBRYAKOV V A.Method of estimating and predic-ting abnormal formation pressure[J].Journal of Petrole-um Science and Engineering,1995,13:113-123.
[3]丁次乾.矿场地球物理[M].东营:石油大学出版社,1992.
[4]周竹生,周熙襄.宽带约束反演方法[J].石油地球物理勘探,1993,28(5):46-49.ZHOUZhu-sheng,ZHOUXi-xiang.Band-constrained in-version[J].Oil Geophysical Prospecting,1993,28(5):46-49.
[5]张立明.人工神经网络的模型及其应用[M].上海:复旦大学出版社,1992.
[6]杨文采.神经网络算法在地球物理反演中的应用[J].石油物探,1995,34(2):116-120.YANG Wen-cai.Application of neural network alogorithmsto geophysical inversion[J].Geophysical Prospecting forPetrole,1995,34(2):116-120.
[7]MAZZONI R and WAHDAMT.Real-time pore and frac-ture pressure prediction with FEWD in the nile delta[R].SPE/IADC 37669,1997.
[8]《钻井手册》编写组.钻井手册[M].北京:石油工业出版社,1990.
[9]PROVOST C E.A real-time normalized rate of penetra-tion aids in lithology and pore pressure prediction[R].SPE 16165,1989.
[10]LESSO Jr W G and BURGESS T M.Pore pressure andporosity from MWD measurements[R].SPE 14801,1989.
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