垦71区块井间地震资料处理研究与应用
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摘要
由于避开了地表低降速带和风化层的影响,井间地震能够采集到高频地震信号,经过资料处理可以得到较高分辨率的速度和上行反射波成像剖面。2004~2005年,胜利油田在垦71区块实施了8对井间地震资料采集。针对原始资料特点,研究了以层析成像、管波衰减、VSP-CDP技术和有限角度叠加成像等关键处理技术,较好地完成了该区块的井间地震资料处理。初步分析解释表明,井间地震可以识别低序级断层、小幅度构造和薄储层。
As cross-well seismic exploration can avoid the impact of the low-velocity layer and weathering layer,it can acquire relatively high frequency seismic signal.After processing,fairly high resolution velocity and reflection imaging can be obtained.During 2004-2005,eight cross-well seismic profiles were processed in Ken 71 Block,Shengli Oil Field.In accordance with the characteristics of raw data,the authors studied tomography,tube wave attenuation,VSP-CDP and finite angle stack,and completed the cross-well seismic data processing.The analysis and interpretation of the final results show that cross-well seismic exploration can recognize small faults,small structures and thin reservoirs between two wells.
As cross-well seismic exploration can avoid the impact of the low-velocity layer and weathering layer,it can acquire relatively high frequency seismic signal.After processing,fairly high resolution velocity and reflection imaging can be obtained.During 2004-2005,eight cross-well seismic profiles were processed in Ken 71 Block,Shengli Oil Field.In accordance with the characteristics of raw data,the authors studied tomography,tube wave attenuation,VSP-CDP and finite angle stack,and completed the cross-well seismic data processing.The analysis and interpretation of the final results show that cross-well seismic exploration can recognize small faults,small structures and thin reservoirs between two wells.
引文
[1]陈世军,周建宇,王延光,等.井间地震技术在樊124井区的应用[J].石油物探,2003,42(3):369.
[2]曹辉,唐金良,郭全仕,等.井间地震反射波场分离及应用研究[J].石油物探,2004,43(6):518.
[3]郭全仕,邬达理,唐金良,等.井间地震反射波成像技术探讨[J].石油物探,2005,44(5):439.
[2]曹辉,唐金良,郭全仕,等.井间地震反射波场分离及应用研究[J].石油物探,2004,43(6):518.
[3]郭全仕,邬达理,唐金良,等.井间地震反射波成像技术探讨[J].石油物探,2005,44(5):439.
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