Speed spectrum automatic picking method based on convolutional neural network
A convolutional neural network and speed picking technology, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as errors and subjective influences, and achieve the effects of avoiding error effects, solving sample demand problems, and saving manpower
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[0040] This embodiment is an automatic velocity spectrum picking method based on a convolutional neural network. The specific implementation process mainly includes the following steps: (1) randomly generating a velocity picking curve; (2) randomly generating a reflection coefficient; (3) selecting a suitable (4) Convolution of reflection coefficient and wavelet to obtain single-trace seismic records; (5) Obtaining two-dimensional horizontal gathers and obtaining analog gathers through reaction correction; (6) Radon transform to obtain velocity spectrum; ( 7) Use the velocity spectrum and velocity pick-up curve as samples to train the neural network; (8) Use the trained neural network for velocity spectrum recognition.
[0041] In the embodiment of the present invention, a total of 100,000 samples have been generated, and the selected velocity range is 1500m / s to 3500m / s, which is close to the seismic wave propagation velocity in the actual formation. The sampling time of the v...
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