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System and method for data inversion with phase extrapolation

A data and phase technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of expensive and difficult traditional methods

Inactive Publication Date: 2013-07-24
CHEVROU USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional methods of determining velocity models and using them to migrate to produce subsurface images are expensive and fraught with difficulties, especially in complex regions

Method used

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  • System and method for data inversion with phase extrapolation
  • System and method for data inversion with phase extrapolation
  • System and method for data inversion with phase extrapolation

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Embodiment Construction

[0022] The invention can be described and implemented in the general context of systems and computer methods executed by a computer. Such computer-executable instructions may include programs, routines, objects, components, data structures, and computer software technologies capable of performing concrete tasks and manipulating abstract data types. Software implementations of the present invention can be written in different languages ​​and used on a wide variety of 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.

[0023] Furthermore, 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 with single and / or multiple computer processors, handheld devices, programmable consumer electronic equipment, mi...

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Abstract

A system and computer-implemented method for inverting data from an area of interest to determine physical properties of the area of interest is disclosed. The method includes transforming the data into a Fourier frequency domain to obtain frequency domain data wherein the frequency domain data includes an amplitude portion and a phase portion, performing phase unwrapping of the phase portion of the frequency domain data to generate an unwrapped phase portion of unwrapped data, extrapolating the unwrapped phase portion to create extrapolated unwrapped data, and inverting the extrapolated unwrapped data to determine the physical properties of the area of interest. The data inverted may be, for example, seismic data or synthetic aperture radar data. The system includes a data source, a user interface, and a processor configured to execute computer modules designed to implement the method.

Description

technical field [0001] In general, the present invention relates to methods and systems for inverting seismic data to compute physical properties of the subsurface, and more particularly to methods and systems for performing phase-only full waveform inversions to compute velocity models from seismic data. Background technique [0002] Subsurface exploration, especially for oil and gas reservoirs, typically uses several methods, such as migrating seismic data, to produce interpretable images of the subsurface. In complex subsurface regions caused by faults, salt bodies, etc., conventional migration methods often fail to produce adequate images. In addition, traditional migration methods require fairly accurate subsurface velocity models; such velocity models can also be determined from seismic data but can be prohibitively expensive in both expertise and computational cost. [0003] There are many conventional methods for computing velocity models from seismic data, includin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/307G06F19/00
Inventor J·K·华什布尔纳N·K·沙K·P·巴布
Owner CHEVROU USA INC