对井间地震反射波成像资料的初步认识
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摘要
井间地震在解决油藏开发问题方面具有明显的精度优势,为了更好地认识和应用井间地震资料,从不同角度对井间地震反射波成像资料进行了分析。通过对井间不同成像方法基本原理的分析,井间成像资料与合成地震记录的对比分析,地层与反射波组对应关系的分析,地层内部变化与地震反射结构的分析,以及井间成像资料与地面地震资料构造趋势的对比分析,得出井间成像资料可以更好地反映地下地质构造形态,同相轴反映的是地层波阻抗界面的认识。对垦71井区井间地震反射波深度域资料进行了波数计算,对其时间域资料进行了频谱分析,并进行了井间地震资料、地面地震资料、测井曲线等的标定对比,认为井间地震反射波成像资料能够分辨3～5 m厚的薄层。对胜利广利油田的井间地震反射波成像资料进行了构造解释,结果表明井间地震反射波成像资料具有反映细微构造的能力。井间地震正演模型分析表明,选择大角度道集进行有限角度叠加处理的成像资料可以用于岩性解释。
The variation of layer wave impedance interfaces can be reflected in imaging section through a series of contrasting and analysis such as contrasting seismic reflection imaging data with synthetic seismogram, analyzing the corresponding relation of horizon and reflection wave, studying on the variation inside layers and seismic reflecting configuration, contrasting the structure trend from crosshole seismic image and routine seismic image. By computing wave number in depth domain, analyzing frequency spectrum in time domain and comparing calibration of various types of data in Ken71 Well area, we conclud that crosshole seismic reflection imaging data has higher resolution, thin layer of 3-5m can be distinguished. Interpreting result in Guangli oilfield indicates that the crosshole seismic reflection imaging data is able to reflect fine structure. The forward model proves that limited angular stack processed crosshole seismic data by selecting large angular gather can be used for lithologic interpretation.
The variation of layer wave impedance interfaces can be reflected in imaging section through a series of contrasting and analysis such as contrasting seismic reflection imaging data with synthetic seismogram, analyzing the corresponding relation of horizon and reflection wave, studying on the variation inside layers and seismic reflecting configuration, contrasting the structure trend from crosshole seismic image and routine seismic image. By computing wave number in depth domain, analyzing frequency spectrum in time domain and comparing calibration of various types of data in Ken71 Well area, we conclud that crosshole seismic reflection imaging data has higher resolution, thin layer of 3-5m can be distinguished. Interpreting result in Guangli oilfield indicates that the crosshole seismic reflection imaging data is able to reflect fine structure. The forward model proves that limited angular stack processed crosshole seismic data by selecting large angular gather can be used for lithologic interpretation.
引文
1 宋建国．井间地震技术在油田开发中的应用潜力[J]． 石油地球物理勘探,2002,37(4):377～381
2孔庆丰,左建军,陈世军,等．井间直达波层析成像的井 斜校正研究与应用[J]．石油地球物理勘探,2004, 39(1):12～16
3何惺华,陈世军,孔庆丰．罗家地区井间地震方法与效 果[J]．石油物探,2002,41(增刊):28～29
4李庆忠,王建花．井间地震勘探的误区[J]．石油地球物 理勘探,2004,39(1):1～11
5张雪建,梁锋,王桂玲,等．深度域合成地震记录的制作 方法研究[J]．石油地球物理勘探,2000,35(3):377～ 385
6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):369～373
7杨国权,王永刚,朱兆林,等．井间地震资料层位标定方 法研究[J]．石油物探,2005,44(3):217～219
8刘殊,甘其刚．海相及湖相碳酸岩储层预测——层序地 层学技术在储层预测中的应用[J]．石油物探,2003,42 (2):169～178
9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):518～522
10李云,颜虹．广角反射子波的估算及应用[J]．石油物 探,2005,44(1):65～67
2孔庆丰,左建军,陈世军,等．井间直达波层析成像的井 斜校正研究与应用[J]．石油地球物理勘探,2004, 39(1):12～16
3何惺华,陈世军,孔庆丰．罗家地区井间地震方法与效 果[J]．石油物探,2002,41(增刊):28～29
4李庆忠,王建花．井间地震勘探的误区[J]．石油地球物 理勘探,2004,39(1):1～11
5张雪建,梁锋,王桂玲,等．深度域合成地震记录的制作 方法研究[J]．石油地球物理勘探,2000,35(3):377～ 385
6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):369～373
7杨国权,王永刚,朱兆林,等．井间地震资料层位标定方 法研究[J]．石油物探,2005,44(3):217～219
8刘殊,甘其刚．海相及湖相碳酸岩储层预测——层序地 层学技术在储层预测中的应用[J]．石油物探,2003,42 (2):169～178
9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):518～522
10李云,颜虹．广角反射子波的估算及应用[J]．石油物 探,2005,44(1):65～67
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