Micro-seismic first arrival intelligent pickup method, system and device based on an FFPN model, and storage medium

Abstract

The invention discloses a micro-seismic first arrival intelligent pickup method, system and device based on an FFPN model, and a storage medium, and belongs to the field of exploration geophysics, and the model provided by the invention retains the multi-scale feature fusion capability of an original FPN network model, is suitable for a first arrival intelligent pickup problem, and can achieve a more refined first arrival output result. According to the network model, output of two scale features is selected as an optimization condition of the model, finer first-arrival pickup output is calculated through low-level features with rich detail features, dichotomous output is calculated through high-level features with a larger receptive field, and the output loss of the two parts is calculated. And back propagation is carried out in the training process to optimize the network model, so that a more accurate dichotomy result (a first arrival picking result) is obtained. Moreover, the point-aware loss function proposed by the model can calculate the loss of low-level feature output, and the low-level features are optimized to achieve the effect of optimizing high-level feature output.

Description

technical field [0001] The invention belongs to the field of exploration geophysics, and relates to a method, system, equipment and storage medium for intelligently picking up microseismic first arrivals based on an FFPN model. Background technique [0002] First arrival picking plays an important role in microseismic processing and imaging. As the amount of received data continues to increase, it becomes very time-consuming to manually pick up microseismic first arrivals, and manual interpretation of microseismic first arrivals depends on the experience of interpreters, which is prone to human error and interference. Over the past few decades, researchers have strived to achieve automatic / semi-automatic microseismic first-arrival picking. [0003] STA / LTA is a traditional microseismic first-arrival picking method, which is realized by calculating the moving average energy ratio of the short-time window and the long-time window. The STA / LTA method is simple to calculate an...

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Problems solved by technology

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a method, system, device and storage medium for intelligent picking of microseismic first arrivals based on the FFPN model, aiming at solving the generalization of microseismic first arrival picking in the prior art Defective technical issues of sex and computational inefficiency

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