VH reservoir mapping

a technology for reservoirs and seismic data, applied in seismology, geological measurements, instruments, etc., can solve the problems of affecting the environment, affecting the environmental impact of data acquisition for oil exploration, and often costing and inefficient exploration and exploration of subsurface hydrocarbon reservoirs

Inactive Publication Date: 2010-06-17
SPECTRASEIS AG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of exploring for and exploiting subsurface hydrocarbon reservoirs is often costly and inefficient because operators have imperfect information from geophysical and geological characteristics about reservoir locations.
Data acquisition for oil exploration may have a negative impact on the environment.

Method used

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  • VH reservoir mapping
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Examples

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Embodiment Construction

[0021]Information to enable the direct detection of hydrocarbon reservoirs or forming hydrocarbon potential maps or displays may be extracted from naturally occurring seismic waves and vibrations measured at the earth's surface. These naturally occurring waves may be measured using passive seismic data acquisition methods to acquire naturally occurring background seismic data. Peaks or troughs in the spectral ratio between the vertical and the horizontal components of the background waves may be used as an indicator for the presence of hydrocarbon reservoirs. While references is made to hydrocarbon reservoir maps, it should be understood that the methods apply equally to methods for hydrocarbon potential maps, that is where data indicated the possibility of hydrocarbons in the subsurface.

[0022]Low-impact survey methods like passive seismic data acquisition may be used for reconnaissance in frontier exploration areas, to monitor reservoirs over the productive life of a field or to co...

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Abstract

A method and system of detecting and mapping a subsurface hydrocarbon reservoir includes determining ratio data for a plurality of orthogonal spectral components of naturally occurring low frequency background seismic data. The ratio data may be compared, plotted, contoured and displayed as a subsurface hydrocarbon reservoir map or a hydrocarbon potential map. The ratio data may represent a vertical spectral component of the seismic data over a horizontal spectral component of the seismic data. The subsurface hydrocarbon reservoir map may include contouring the ratio data over a geographical area associated with the seismic data.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is a continuation of U.S. Utility application Ser. No. 11 / 757,362 filed 2 Jun. 2007, now U.S. Pat. No. 7,676,326 issued 9 Mar. 2010 hereby incorporated by reference in its entirety, which claim the benefit of expired U.S. Provisional Application No. 60 / 804,420 filed 9 Jun. 2006, and expired U.S. Provisional Application No. 60 / 806,455 filed 30 Jun. 2006.BACKGROUND OF THE DISCLOSURE[0002]1. Technical Field[0003]The disclosure is related to seismic exploration for oil and gas, and more particularly to processing and displaying seismic data.[0004]2. Description of the Related Art[0005]Seismic exploration for hydrocarbons generally is conducted using a source of seismic energy and receiving and recording the energy generated by the source using seismic detectors. On land, the seismic energy source may be an explosive charge or another energy source having the capacity to impart impacts or mechanical vibrations at or near the ea...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): G01V1/34G01V1/00G01V1/28G06F19/00
CPCG01V1/28G01V2210/123G01V1/34
InventorPODLADCHIKOV, YURILAMBERT, MARC-ANDREDEWARRAT, RODOLPHESCHMALHOLZ, STEFAN
OwnerSPECTRASEIS AG