Inversion model updating method based on M-H sampling of Gaussian distribution
A technology of Gaussian distribution and update method, applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of too large convergence value range, slow convergence speed, local optimization, etc., to speed up convergence, avoid too large convergence value range, The effect of narrowing the convergence range
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[0086] Such as Figure 1-8 As shown, when the parameter to be inverted is wave impedance, the inversion is as follows:
[0087] Step 1.1: Input the seismic information, extract horizons according to the seismic data, use Kriging interpolation modeling to obtain the initial wave impedance model according to the logging data, and extract wavelets through the seismic information using well-seismic matching;
[0088] Step 2.1: Select the wave impedance AI of the t-th channel model k , through the recursive relationship between wave impedance and wave impedance logarithm to find the initial wave impedance logarithm, the recursive relationship between wave impedance and wave impedance logarithm is shown in formula 1:
[0089] L k =ln(AI k ) Formula 1)
[0090] Among them, AI k Indicates wave impedance, L k Indicates the wave impedance logarithm;
[0091] Step 2.2: The initial wave impedance logarithm L 1 as an update to the initial model;
[0092] Step 3.1: Calculate the wa...
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