Wave-equation reverse-time migration imaging method for mass-data graphic processing unit

A technology of reverse time migration imaging and graphics processor, which is applied in the direction of seismic signal processing, etc., can solve the problems of long calculation cycle, low efficiency, unbalanced parallel load, and difficulty in trial and error, so as to improve analyzability and repeatability Utilization, strong fault tolerance, and fast calculation speed

Inactive Publication Date: 2014-03-26
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

In the specific implementation process, problems will be encountered: unbalanced parallel load, long calculation cycle and low efficiency, heavy noise caused by the use of random boundary conditions, reasonable use and reuse of calculation results, insufficient convenient user analysis methods, etc.
[0009] Aiming at the defects of the prior art, the present invention discloses a massive data GPU wave equation reverse time migration imaging method, which not only overcomes t...

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  • Wave-equation reverse-time migration imaging method for mass-data graphic processing unit
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  • Wave-equation reverse-time migration imaging method for mass-data graphic processing unit

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Embodiment Construction

[0043] The present invention is further described below in conjunction with embodiment. The scope of the present invention is not limited by these examples, and the scope of the present invention is set forth in the claims.

[0044] The inventive spirit of the present invention can be better understood with reference to the accompanying drawings and specific implementations, and those skilled in the art can understand that the specific implementations provided are only preferred rather than limited to this implementation. Changes made by those skilled in the art on the basis of understanding the technical solutions of the present invention, such as the use of different GPUs, changes in the number of CPU core thread groups, etc., still belong to the protection scope of the present invention, and the protection of the present invention covers its claims and rights The required equivalent transformation.

[0045] In the following embodiments, the GPU model used is Tesla C1060 pr...

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Abstract

The invention relates to a wave-equation reverse-time migration imaging method for a mass-data graphic processing unit. The method includes a data distribution module which distributes single-shot data to different graphic-processing-unit nodes; a reverse-time migration module which performs calculation imaging on the single-shot data and outputs an imaging file; a real-time data combination module which scans the imaging file in a real-time manner and performs statistics and classification and calculates the number and size of information files needed by a user and notifies the user how much time is needed to complete the data combination in a percentage form. Through the method, parallel calculation through the graphic processing unit is realized through calculation of dense wave-field spread, border conditions and imaging.

Description

technical field [0001] The invention relates to the field of seismic exploration and development, and is applied in petroleum exploration, natural gas exploration, coal field exploration, mineral exploration, etc., and particularly relates to a massive data GPU wave equation reverse time migration imaging method. Background technique [0002] With the continuous deepening of oil and gas field exploration, the exploration of pre-salt oil and gas reservoirs has attracted more and more attention. Traditional migration methods cannot delineate the boundaries of salt domes and image sub-salt structures. Reverse time migration (RTM) uses a two-way wave equation, which can accurately describe the wave propagation process. Accurate imaging of steep dip angles and inversion structures, and imaging of complex geological structures using current limited migration methods. [0003] Reverse time migration technology, as a solution to seismic imaging problems under complex conditions, ca...

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Application Information

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IPC IPC(8): G01V1/28
Inventor 李敏陈杰蔡俩
Owner CHINA PETROLEUM & CHEM CORP
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