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Dynamic source parameter selection for seismic vibrator data acquisition

a dynamic source parameter and seismic vibrator technology, applied in the field of methods, can solve problems such as creating a complex source signal

Inactive Publication Date: 2010-01-28
CONOCOPHILLIPS CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, multiple seismic vibrators are operated simultaneously, thereby creating a complex source signal wherein separate source signals from separate vibrators or groups may be separated during subsequent processing.

Method used

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  • Dynamic source parameter selection for seismic vibrator data acquisition
  • Dynamic source parameter selection for seismic vibrator data acquisition
  • Dynamic source parameter selection for seismic vibrator data acquisition

Examples

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Embodiment Construction

[0038]A non-limiting illustrative embodiment of system and method for selecting vibrator units and their associated source parameter data is presented through one or more of its various aspects such as those noted below. Particular non-limiting embodiments for selecting contemporaneously operating separable single vibrator source points and related seismic vibrator-source acquisition parameters are described. Embodiments disclosed herein and equivalents that will be apparent to practitioners in the art provide for robustly increasing the efficiency of acquiring high quality seismic data.

[0039]The system and methods encompass various non-limiting aspects of operating single vibrators sources including continuous and uninterrupted data recording, optimized and variable sweep encoding parameters, dynamic sweep encoding parameter selections based on available field resources and field location conditions, maintaining a substantially uniform source energy budget for all source points, dy...

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Abstract

A method and system of operating single vibrator source points for seismic data acquisition includes acquiring real-time field survey locations for a first plurality of seismic vibrators, determining at least one geometrical relationship between each of the first plurality of seismic vibrators as a function of the field survey locations, selecting a second plurality of seismic vibrators from the first plurality of vibrators as a function of the at least one geometrical relationship, selecting source parameter data for the second plurality of seismic vibrators as a function of the field survey locations and driving the second plurality of seismic vibrators to propagate seismic energy into the earth. A third plurality of vibrators is selected based on geometrical relationships and associated source parameters are determined based on vibrator locations. Multiple vibrator groups may acquire data continuously without interruption.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. patent application Ser. No. 11 / 677,438 filed Feb. 21, 2007.BACKGROUND[0002]1. Technical Field[0003]The present disclosure generally relates to methods and processing in the field of seismic data acquisition, and particularly to the acquisition and processing of seismic data.[0004]2. Background Information[0005]Seismic surveys image or map the subsurface of the earth by imparting acoustic energy into the ground and recording the reflected energy or “echoes” that return from the rock layers below. The source of the acoustic energy is usually generated by an explosion or seismic vibrators, or air guns (and marine vibrators) in marine environments.[0006]During a seismic survey, the energy source is positioned on or near the surface of the earth. Each time the energy source is activated it generates a seismic signal that travels into the earth, is partially reflected, and, upon its return, may be reco...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01V1/00
CPCG01V1/003G01V1/005
Inventor EICK, PETER M.BREWER, JOEL D.CHIU, STEPHEN K.EMMONS, CHARLES W.
Owner CONOCOPHILLIPS CO
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