Seismic data quick time depth conversion method based on speed model
A technology of velocity model and seismic data, applied in the field of rapid time-depth conversion of seismic data based on velocity model, can solve the problems of insufficiency and low efficiency, and achieve the effect of improving efficiency
Active Publication Date: 2015-10-28
PST SERVICE CORP
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[0002] The depth conversion of seismic data is inseparable from computer software-assisted execution. In the traditional process of transferring seismic data from the time domain to the depth domain, it is necessary to use the velocity model to perform time-depth conversion on the seismic data, and convert and resample the time domain data volume into a depth domain. The data body of the depth domain is loaded into the software in the form of depth domain data, so that it can be used in the depth domain. The whole process takes 2-3 hours, and the efficiency is very low
Such efficiency cannot meet the needs of engineering such as geosteering while drilling
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[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.
[0025] Such as figure 1 As shown, in the prior art, the traditional process of converting seismic data from the time domain to the depth domain requires firstly using the velocity model to perform time-depth conversion on the seismic data, converting and resampling the data volume in the time domain into the data volume in the depth domain, Then load it into the software in the form of depth domain data, so that it can be used in the depth domain. The whole process takes 2-3 hours, and the efficiency is very low, which cannot meet the needs of geosteering while drilling and other projects.
[002...
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A seismic data quick time depth conversion method based on a speed model comprises the following steps of S1, acquiring seismic survey lines and a seismic data volume, and reading the data of the seismic survey lines; S2, acquiring a speed model and extracting the speed model along the seismic survey lines; S3, successively performing time depth conversion on the seismic data of the seismic data volume by means of the extracted speed model according to equidistant time domains; and S4, generating a seismic cross section according to the converted data and displaying the seismic cross section in a window. According to the seismic data quick time depth conversion method, a time depth conversion algorithm is used for directly performing resampling on the time-domain seismic data and generating depth domain data, and furthermore the depth domain data are displayed in real time in the window. Time depth conversion which is originally finished in 2-3 hours can be finished in 3-8 seconds according to the seismic data quick time depth conversion method, thereby greatly improving efficiency and satisfying the requirement of a project to real-time performance of the seismic data.
Description
technical field [0001] The invention belongs to the technical field of petroleum geophysical prospecting and petroleum drilling engineering, and in particular relates to a fast time-depth conversion method for seismic data based on a velocity model. Background technique [0002] The depth conversion of seismic data is inseparable from computer software-assisted execution. In the traditional process of transferring seismic data from the time domain to the depth domain, it is necessary to first use the velocity model to perform time-depth conversion on the seismic data, and convert and resample the time domain data volume into a depth domain. The data body of the depth domain is loaded into the software in the form of depth domain data, so that it can be used in the depth domain. The whole process takes 2-3 hours, and the efficiency is very low. Such efficiency cannot meet the needs of engineering such as geosteering while drilling. Contents of the invention [0003] In ord...
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IPC IPC(8): G01V1/32
Inventor 姜玉新崔勇
Owner PST SERVICE CORP