Method for generating an estimate of lithological characteristics of a region of the earth's subsurface
AssigneeRdsp I, L.P.
InventorsM. Turhan Taner, Naum M. Derzhi, Joel D. Walls
Life of this patent
Estimating the term…
Abstract
The invention in a first embodiment comprises a system for generating an estimate of lithological characteristics of a region of the earth's subsurface. A correlation is generated between attributes of synthetic seismic data calculated from log data from at least one wellbore penetrating said region and lithological information from said at least one wellbore. The correlation is then applied to recorded seismic data from the region of the earth's subsurface to generate the estimate.
Claims13
A method for generating an estimate of lithological characteristics of a region of the earth's subsurface, comprising:
- generating a correlation between attributes of synthetic seismic data calculated from log data from at least one wellbore penetrating said region and lithological information from said at least one wellbore;
- and
- applying said correlation to attributes of recorded seismic traces from said region of the earth's subsurface to generate said estimate.
A method for generating an estimate of lithological characteristics of a region of the earth's subsurface penetrated by a plurality of wellbores, comprising:
- developing a lithological column from core data from at least one of said wellbores;
- developing a correlation between said lithological column and log data from said at least one of said wellbores;
- utilizing log data from at least one of said wellbores to develop log data representing at least one model well;
- applying said correlation between said lithological column and log data to log data from said plurality of wellbores and said at least one model well to generate lithological information for said plurality of wellbores and said at least one model well;
- calculating synthetic seismic traces from log data from said plurality of wellbores and from said at least one model well;
- calculating attributes of said synthetic seismic traces;
- generating a correlation between said attributes of said synthetic seismic traces and said lithological information;
- calculating attributes of recorded seismic traces from said region;
- and
- applying said correlation between said attributes of said synthetic seismic traces and said lithological information to said attributes of recorded seismic traces to generate said estimate of lithological characteristics.
A method for generating an estimate of lithological characteristics of a region of the earth's subsurface penetrated by a plurality of wellbores, comprising:
- developing a lithological column from core data from at least one of said wellbores;
- developing a correlation between said lithological column and log data from said at least one of said wellbores;
- applying said correlation between said lithological column and log data to log data from said plurality of wellbores to generate lithological information for said plurality of wellbores;
- calculating synthetic seismic traces from log data from said plurality of wellbores;
- calculating attributes of said synthetic seismic traces;
- generating a correlation between said attributes of said synthetic seismic traces and said lithological information;
- calculating attributes of recorded seismic traces from said region;
- and
- applying said correlation between said attributes of said synthetic seismic traces and said lithological information to said attributes of recorded seismic traces to generate said estimate of lithological characteristics.
A method for generating an estimate of lithological characteristics of a region of the earth's subsurface penetrated by a plurality of wellbores, comprising:
- utilizing log data to generate lithological information for said plurality of wellbores;
- utilizing log data from at least one of said wellbores to develop log data representing at least one model well;
- calculating synthetic seismic traces from log data from said plurality of wellbores and said at least one model well;
- calculating attributes of said synthetic seismic traces;
- generating a correlation between said attributes of said synthetic seismic traces and said lithological information;
- calculating attributes of recorded seismic traces from said region;
- and
- applying said correlation between said attributes of said synthetic seismic traces and said lithological information to said attributes of recorded seismic traces to generate said estimate of lithological characteristics.
A method for generating an estimate of lithological characteristics of a region of the earth's subsurface penetrated by a plurality of wellbores, comprising:
- utilizing log data to generate lithological information for said plurality of wellbores;
- calculating synthetic seismic traces from log data from said plurality of wellbores;
- calculating attributes of said synthetic seismic traces;
- generating a correlation between said attributes of said synthetic seismic traces and said lithological information;
- calculating attributes of recorded seismic traces from said region;
- and
- applying said correlation between said attributes of said synthetic seismic traces and said lithological information to said attributes of recorded seismic traces to generate said estimate of lithological characteristics.
A device adapted for use by a digital computer wherein a plurality of computer instructions readable by said digital computer are encoded, which instructions instruct the computer to perform a process comprising:
- generating a correlation between attributes of synthetic seismic data calculated from log data from at least one wellbore penetrating said region and lithological information from said at least one wellbore;
- and
- applying said correlation to attributes of recorded seismic traces from said region of the earth's subsurface to generate said estimate.
Dependencies are inferred from the claim text.