辽河油田Π方法井间地震试验及效果分析
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摘要
张立新 ,宋常瑜 ,刘兵 .辽河油田Π方法井间地震试验及效果分析 .石油地球物理勘探 ,2 0 0 1,36 (5 ) :6 11～ 6 17 为了探索井间地震技术在油田的实际应用 ,辽河油田物探公司在该油田的 S1井区进行了 Π方法的井间地震试验。基于此次试验 ,本文简要介绍了 Π方法的原理和基本成像思路、野外实现方法、成像结果和 Π方法的几点优势 ,最后对 Π方法的技术特点进行了总结。此次试验利用 Π方法获得的反射波主频达 70 Hz,成像处理之后为 5 0 Hz,资料具有较高的信噪比和分辨率 ,可以满足精细解释的要求。通过分析认为 ,Π方法具有井间地震技术的上、下行波的接收特点 ,它是对井间地震技术的补充和完善 ,解决了在没有井中震源的情况下的井间成像问题
In order to explore practical application of cross hole seismic technique in oilfield, Geophysical Exploration Corporation of Liaohe Oilfield made cross hole seismic test of Π method in S1 well block of the Oilfield. Based the test, the paper summarily introduced the principle of Π method, its basic imaging idea, field realization method, imaging results and some advantages of Π method, finally summed up technical properties of the method. The dominant frequency of reflection obtained from Π method attains 70Hz in this test and 50Hz after imaging processing. The data have higher signal to noise ratio and resolution and can meet a demand for subtle interpretation. It is considered by the analysis that the method has character of receiving up and down going wave which cross hole seismic technology has, it is compensation and completeness of cross hole seismic technology and solves cross hole seismic imaging problem in a condition of without source in the hole.
In order to explore practical application of cross hole seismic technique in oilfield, Geophysical Exploration Corporation of Liaohe Oilfield made cross hole seismic test of Π method in S1 well block of the Oilfield. Based the test, the paper summarily introduced the principle of Π method, its basic imaging idea, field realization method, imaging results and some advantages of Π method, finally summed up technical properties of the method. The dominant frequency of reflection obtained from Π method attains 70Hz in this test and 50Hz after imaging processing. The data have higher signal to noise ratio and resolution and can meet a demand for subtle interpretation. It is considered by the analysis that the method has character of receiving up and down going wave which cross hole seismic technology has, it is compensation and completeness of cross hole seismic technology and solves cross hole seismic imaging problem in a condition of without source in the hole.
引文
[1] 吴律.层析基础及其在井间地震中的应用,石油工业出版社,1997
[2] 俞寿朋.高分辨率地震勘探,石油工业出版社,1994
[3] 宋炜等.双井与地面数据集的透射与反射层析成像.石油地球物理勘探,1999,34(2):148～154
[2] 俞寿朋.高分辨率地震勘探,石油工业出版社,1994
[3] 宋炜等.双井与地面数据集的透射与反射层析成像.石油地球物理勘探,1999,34(2):148～154
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