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System and method for processing seismic data

A seismic data and processor technology, applied in seismology, seismic signal processing, electrical digital data processing, etc., can solve problems such as expensive and difficult calculations

Inactive Publication Date: 2013-07-17
CHEVROU USA INC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Estimating the Q field from the amplitude is computationally expensive and traditionally very difficult because the amplitude is affected by many factors such as propagation length, wavefront change, and reflectivity

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  • System and method for processing seismic data
  • System and method for processing seismic data
  • System and method for processing seismic data

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Embodiment Construction

[0018] 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.

[0019] 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 electronics, minicompute...

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Abstract

A computer-implemented method for processing seismic data includes the determining, from the seismic data, a first amplitude attribute map at a first image depth corresponding to a shallow attenuating body, and a second amplitude attribute map at a second image or target depth. The first and second amplitude attribute maps are then normalized, and a ratio map is determined based on a ratio of the normalized first and second amplitude attribute maps. The ratio map is scaled to yield a scale factor map, which is then applied to the seismic data to compensate for effects of shallow overburden attenuation.

Description

technical field [0001] In general, the present disclosure relates to seismic data processing and, more particularly, to methods and systems for minimizing the effects of shallow topsoil attenuation. Background technique [0002] Shallow topsoil anomalies are known to have a significant detrimental effect on seismic data quality. Such anomalies can include amplitude attenuation, frequency loss, and wavefront distortion as received (reflected) waves from deeper "target" layers in the subsurface travel through gas-filled access formations and hydrates in shallower regions. This may result in misalignment, attenuated amplitude, and / or lower bandwidth of the reflected seismic signal received from the target layer, thereby affecting the quality of the subsurface characterization. [0003] Conventional compensation methods for space-varying amplitude attenuation due to shallow geological bodies have been developed. See for example: "Turning ray amplitude inversion: Mitigating amp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/36
CPCG01V2210/584G06F19/00G01V1/36G01V1/307G01V2210/74
Inventor A·E·小罗美罗M·G·格瑞内尔
Owner CHEVROU USA INC
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