MSH法直接将地震勘控测线转化为深度、密度剖面
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摘要
根据运动学中的动量守恒定律、分析地震勘探过程中地震波在地下介质中的传播过程 ,利用反射能量、透射能量与入射能量的计算公式和检波器转化的电信号与地下密度界面反射地震波波动能量的等效原理 ,推导出直接求层速度和层密度公式 .利用某一反射界面直接测得的波速或依据钻孔资料求得的平均速度 ,在计算机上就可直接计算出各地震测线物性层的埋深和密度 (速度、波阻抗 ) ,由此地质工作人员依据已知地质柱状剖面 (钻孔资料 )可进一步将深度、密度 (速度、波阻抗 )剖面解释成深度岩性地质剖面 ,为解释油气层、计算油气储量、各种地质构造提供更为可靠的物探依据
Based on the law of conservation of momentum inkinetics, it is studied that the process of seismic waves propagating among the underground media during seismic exploration. Using the calculation formula of reflection ecergy, transmissin energy and incidence energy and equivalent principle of electric signal received by detector and seismic wave energy reflected by underground lithologic boundary, the formula of interval velocity and strata density are derived. Using wave veloity directly detected on a lithologic boundary or mean velculated by well data, the depth, density (velocity and wave impedance) of physical strata along seismic survey line can be directly calculated with computer. Then, the geoloist can transform the section of depth and density into the depth and lithological section relied on known geological columnar section (drill hole data), and can provide more reliable geploration achievements used for explaining hydrocarbon reservoir and all kinds of geological structures, calculating reserves of oil and gas.
Based on the law of conservation of momentum inkinetics, it is studied that the process of seismic waves propagating among the underground media during seismic exploration. Using the calculation formula of reflection ecergy, transmissin energy and incidence energy and equivalent principle of electric signal received by detector and seismic wave energy reflected by underground lithologic boundary, the formula of interval velocity and strata density are derived. Using wave veloity directly detected on a lithologic boundary or mean velculated by well data, the depth, density (velocity and wave impedance) of physical strata along seismic survey line can be directly calculated with computer. Then, the geoloist can transform the section of depth and density into the depth and lithological section relied on known geological columnar section (drill hole data), and can provide more reliable geploration achievements used for explaining hydrocarbon reservoir and all kinds of geological structures, calculating reserves of oil and gas.
引文
[1]刘馥 地震勘探导论 .北京 :地震出版社 ,1990年 3月 ,2 7,4 7.
[2 ]何樵登 地震勘探原理和方法论 .北京 :地质出版社 ,1986年 10月 ,39.
[3]程守洙 江之永等改编 普通物理学第一册 .北京 :人民教育出版社 ,1978年 ,6 9.
[2 ]何樵登 地震勘探原理和方法论 .北京 :地质出版社 ,1986年 10月 ,39.
[3]程守洙 江之永等改编 普通物理学第一册 .北京 :人民教育出版社 ,1978年 ,6 9.
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