Intelligent seismic wave impedance inversion label data manufacturing method and device
A technology for labeling data and seismic data volumes, which is applied in the field of intelligent seismic wave impedance inversion label data production, can solve problems such as inability to obtain enough samples, less logging data, data confidentiality, and improve inversion accuracy, so as to improve accuracy and The effect of generalization ability
Pending Publication Date: 2022-05-31
PETROCHINA CO LTD
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However, due to the lack of logging data in the work area and the confidentiality of the data, it is usually impossible to obtain enough samples to improve the inversion accuracy
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[0036] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention more clearly understood, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.
[0037] In order to solve the bottleneck problem that the intelligent seismic wave impedance inversion method based on deep learning needs big data, and overcome the problem that it is difficult to obtain enough label data sets due to less logging data in practical applications, the embodiment of the present invention provides an intelligent method. Seismic wave impedance inversion label data production method, such as figure 1 As shown, the method includes steps 101 to:
[0038] Step 101: Statistically obtain prior information of sand and mudstone, ...
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The invention discloses a method and a device for making intelligent seismic wave impedance inversion label data. The method comprises the following steps of: counting prior information of sand shale, clay content, porosity and water saturation in logging data; according to the prior information, modeling by using a geostatistics random modeling method to obtain a plurality of different clay content, porosity and water saturation simulation data volumes; freely combining the clay content simulation data volume, the porosity simulation data volume and the water saturation simulation data volume to obtain a simulation data volume combination; modeling the simulated data body combinations by using a rock physical modeling method to obtain a plurality of different wave impedance data bodies; a plurality of different seismic data volumes are obtained by using the wave impedance data volumes and actual seismic data in combination with a seismic forward modeling method, and the obtained wave impedance data volumes and seismic data volumes are used as label data. According to the method, sufficient seismic wave impedance inversion label data conforming to an underground geological statistical law and a rock physical mechanism can be rapidly obtained.
Description
technical field [0001] The invention relates to the technical field of seismic inversion and reservoir prediction, in particular to a method and device for making label data for intelligent seismic wave impedance inversion. Background technique [0002] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] Seismic inversion is to infer the parameters of underground geophysical properties, including elastic parameters and petrophysical parameters, through the seismic data observed on the surface, the forward modeling relationship and the prior information obtained from the logging geology, and then use these parameters or the relationship between them. A certain combination of methods for oil and gas prediction. Because the wave impedance has a good correspondence with the oil and gas properties of the underground r...
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IPC IPC(8): G01V1/30G01V1/28G01V1/40
CPCG01V1/306G01V1/282G01V1/40G01V2210/6161G01V2210/6169G01V2210/6226G01V2210/624G01V2210/6244
Inventor 贺东阳李海山杨午阳周春雷常德宽陈德武王伟何润
Owner PETROCHINA CO LTD