Multi-crosswell profile 3D imaging and method
Abstract
Characterizing the value of a particular property, for example, seismic velocity, of a subsurface region of ground is described. In one aspect, the value of the particular property is represented using at least one continuous analytic function such as a Chebychev polynomial. The seismic data may include data derived from at least one crosswell dataset for the subsurface region of interest and may also include other data. In either instance, data may simultaneously be used from a first crosswell dataset in conjunction with one or more other crosswell datasets and/or with the other data. In another aspect, the value of the property is characterized in three dimensions throughout the region of interest using crosswell and/or other data. In still another aspect, crosswell datasets for highly deviated or horizontal boreholes are inherently useful. The method is performed, in part, by fitting a set of vertically spaced layer boundaries, represented by an analytic function such as a Chebychev polynomial, within and across the region encompassing the boreholes such that a series of layers is defined between the layer boundaries. Initial values of the particular property are then established between the layer boundaries and across the subterranean region using a series of continuousmore »
- Inventors:
-
- Houston, TX
- (Kensington, CA)
- Seattle, WA
- Issue Date:
- Research Org.:
- TomoSeis Inc., Houston, TX (United States)
- OSTI Identifier:
- 874439
- Patent Number(s):
- 6388947
- Assignee:
- TomoSeis, Inc. (Houston, TX)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
- DOE Contract Number:
- FG02-94ER86019
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- multi-crosswell; profile; 3d; imaging; method; characterizing; value; property; example; seismic; velocity; subsurface; region; ground; described; aspect; represented; continuous; analytic; function; chebychev; polynomial; data; derived; crosswell; dataset; instance; simultaneously; conjunction; datasets; andor; characterized; dimensions; throughout; highly; deviated; horizontal; boreholes; inherently; useful; performed; fitting; set; vertically; spaced; layer; boundaries; encompassing; series; layers; defined; initial; values; established; subterranean; functions; adjusted; closely; match; determine; selected; surface region; subsurface region; /367/
Citation Formats
Washbourne, John K, Rector, III, James W., and Bube, Kenneth P. Multi-crosswell profile 3D imaging and method. United States: N. p., 2002.
Web.
Washbourne, John K, Rector, III, James W., & Bube, Kenneth P. Multi-crosswell profile 3D imaging and method. United States.
Washbourne, John K, Rector, III, James W., and Bube, Kenneth P. Tue .
"Multi-crosswell profile 3D imaging and method". United States. https://www.osti.gov/servlets/purl/874439.
@article{osti_874439,
title = {Multi-crosswell profile 3D imaging and method},
author = {Washbourne, John K and Rector, III, James W. and Bube, Kenneth P},
abstractNote = {Characterizing the value of a particular property, for example, seismic velocity, of a subsurface region of ground is described. In one aspect, the value of the particular property is represented using at least one continuous analytic function such as a Chebychev polynomial. The seismic data may include data derived from at least one crosswell dataset for the subsurface region of interest and may also include other data. In either instance, data may simultaneously be used from a first crosswell dataset in conjunction with one or more other crosswell datasets and/or with the other data. In another aspect, the value of the property is characterized in three dimensions throughout the region of interest using crosswell and/or other data. In still another aspect, crosswell datasets for highly deviated or horizontal boreholes are inherently useful. The method is performed, in part, by fitting a set of vertically spaced layer boundaries, represented by an analytic function such as a Chebychev polynomial, within and across the region encompassing the boreholes such that a series of layers is defined between the layer boundaries. Initial values of the particular property are then established between the layer boundaries and across the subterranean region using a series of continuous analytic functions. The continuous analytic functions are then adjusted to more closely match the value of the particular property across the subterranean region of ground to determine the value of the particular property for any selected point within the region.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}
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