RU2010108707A - METHOD FOR MEASURING SPEEDS OF LONGITUDINAL WAVES IN A HORIZONTALLY-LAYERED, TRANSVERSAL-ISOTROPIC MEDIUM - Google Patents
METHOD FOR MEASURING SPEEDS OF LONGITUDINAL WAVES IN A HORIZONTALLY-LAYERED, TRANSVERSAL-ISOTROPIC MEDIUM Download PDFInfo
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- RU2010108707A RU2010108707A RU2010108707/28A RU2010108707A RU2010108707A RU 2010108707 A RU2010108707 A RU 2010108707A RU 2010108707/28 A RU2010108707/28 A RU 2010108707/28A RU 2010108707 A RU2010108707 A RU 2010108707A RU 2010108707 A RU2010108707 A RU 2010108707A
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- seismogram
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- hodographs
- reflections
- velocities
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- Geophysics And Detection Of Objects (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
1. Метод определения кажущейся пластовой и горизонтальной скоростей продольных волн в трансверсально-изотропном слое, включающий возбуждение упругих волн, регистрацию сейсмограммы и последующую обработку полученных данных, отличающийся тем, что обработку данных осуществляют путем выделения на сейсмограмме отражений от верхней и нижней границ выбранного слоя и построения исходных годографов t1(X) и t(X) этих отражений, затем задают дискретный набор значений рi лучевого параметра и переходят от исходных годографов к редуцированным годографам τ1(p,X)=t1(X)-pX и τ(р,Х)=t(X)-pX для выбранного набора значений рi, вычисляют эффективные лучевые скорости по формуле ! , ! где Δt0 - разность нулевых времен, а Δτ(рi) - разность значений редуцированных годографов в точках из минимумов при соответствующей величине рi, после чего по методу наименьших квадратов аппроксимируют обратные квадраты эффективных лучевых скоростей в системе координат , прямой и по параметрам f0 и b аппроксимирующей прямой вычисляют кажущуюся пластовую скорость и горизонтальную скорость в выбранном слое. ! 2. Способ по п.1, отличающийся тем, что регистрацию сейсмограммы осуществляют по методу общей глубинной точки. 1. A method for determining the apparent reservoir and horizontal velocities of longitudinal waves in a transversely isotropic layer, including the excitation of elastic waves, recording a seismogram and subsequent processing of the obtained data, characterized in that the data are processed by extracting reflections from the upper and lower boundaries of the selected layer on the seismogram and constructing the initial hodographs t1 (X) and t (X) of these reflections, then set a discrete set of values of the ray parameter pi and go from the original hodographs to reduced hodographs Fam τ1 (p, X) = t1 (X) -pX and τ (p, X) = t (X) -pX for the selected set of pi values, the effective radial velocities are calculated by the formula! ! where Δt0 is the difference of zero times, and Δτ (pi) is the difference of the values of the reduced hodographs at points from the minima at the corresponding value of pi, after which the inverse squares of the effective radial velocities are approximated by the least squares method in the coordinate system, which approximates the direct and the parameters f0 and b straight line calculate the apparent reservoir velocity and horizontal velocity in the selected layer. ! 2. The method according to claim 1, characterized in that the registration of the seismogram is carried out according to the method of a common deep point.
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RU2010108707/28A RU2435176C1 (en) | 2010-03-09 | 2010-03-09 | Method of measuring speed of longitudinal waves in horizontal-layered, transverse-isotropic medium |
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RU2010108707/28A RU2435176C1 (en) | 2010-03-09 | 2010-03-09 | Method of measuring speed of longitudinal waves in horizontal-layered, transverse-isotropic medium |
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RU2010108707A true RU2010108707A (en) | 2011-09-20 |
RU2435176C1 RU2435176C1 (en) | 2011-11-27 |
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RU2010108707/28A RU2435176C1 (en) | 2010-03-09 | 2010-03-09 | Method of measuring speed of longitudinal waves in horizontal-layered, transverse-isotropic medium |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113933909A (en) * | 2021-08-30 | 2022-01-14 | 核工业北京地质研究院 | Method for rapidly determining boundary of valley cracking basin |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113933909A (en) * | 2021-08-30 | 2022-01-14 | 核工业北京地质研究院 | Method for rapidly determining boundary of valley cracking basin |
CN113933909B (en) * | 2021-08-30 | 2024-03-19 | 核工业北京地质研究院 | Method for rapidly determining boundary of split valley basin |
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RU2435176C1 (en) | 2011-11-27 |
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