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System and method for generating images of subsurface structures

一种地下区域、图像数据的技术，应用在地震学、地震信号处理、地球物理测量等方向，达到性价比改进的效果

Inactive Publication Date: 2013-05-22
CHEVROU USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the auxiliary components of the method (data storage / retrieval, data transfer between the involved components) need to be optimized and improved accordingly to avoid creating bottlenecks that may limit the overall efficiency of the application

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  • System and method for generating images of subsurface structures
  • System and method for generating images of subsurface structures
  • System and method for generating images of subsurface structures

Examples

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Embodiment Construction

[0021] The present invention may be described and implemented in the general context of systems and computer methods executed by computers. Such computer-executable instructions may include programs, routines, objects, components, data structures and computer software techniques that can be used to perform particular tasks and manipulate abstract data types. Software implementations of the present invention may be coded in different languages ​​for use in various computing platforms and environments. It should be appreciated that the scope and underlying principles of the present invention are not limited to any particular computer software technology.

[0022] Moreover, those skilled in the art will recognize that the present invention may be practiced using any one or combination of hardware and software configurations, including, but not limited to, systems having single and / or multiple processor computer processor systems , handheld devices, programmable consumer electron...

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Abstract

A system and method for generating images of a subsurface region of interest is provided. In one embodiment, a computer-implemented method of generating images related to a subsurface region of interest includes: accessing, via a central processing unit (CPU), seismic data and an earth model related to the subsurface region of interest; forward propagating a source wavefield using the earth model at a first time interval via at least one external co-processor coupled to the CPU; transferring, at a second time interval, the forward propagated source wavefield to the CPU for compression and external storage; backward propagating the seismic data at the first time interval via the external co-processor to derive backward propagated receiver wavefield; and transferring, at the second time interval, the backward propagated receiver wavefield to the CPU. Via the CPU, the method further includes retrieving the stored forward propagated source wavefield; decompressing the retrieved forward propagated source wavefield; and applying imaging conditions to the decompressed forward propagated source wavefield and backward propagated receiver wavefield to construct image data representative of the subsurface region of interest.

Description

[0001] This application is based on and claims the benefit of US Provisional Application 61 / 384,596, filed September 20, 2010, which is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates generally to systems and methods for generating images representative of subsurface formations, and more particularly to improved systems and methods for performing reverse time migration of seismic wavefield data to determine subsurface properties of subsurface regions of interest. Background technique [0003] Conventional migration and inversion methods involve correlating forward and backward propagating wavefields to obtain images representative of subsurface properties. Examples of such methods include reverse time migration, differential surface velocity analysis, and waveform inversion. These methods require accessing the forward-propagating wavefield in reverse order, at each time step in lockstep with the accompanying backward-p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
CPCG01V2210/679G01V1/301
Inventor A·洛都什刘伟
Owner CHEVROU USA INC
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