Methods and systems for constructing and using a subterranean geomechanics model spanning local to zonal scale in complex geological environments
AssigneeGeoScale, Inc.
InventorElan Yogeswaren
Life of this patent
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Abstract
In an exemplary embodiment, a method and system is disclosed for developing a subterranean geomechanics model of a complex geological environment. The method can include estimating a pore pressure field, a stress field, a geomechanics property field, and a geological structure field from a geological concept model; geostatistically interpolating vectors and tensors from the estimated fields; and combining the results from the estimated fields and the geostatistically interpolated vectors and tensors to derive a geostatistical geomechanical model of the geological environment.
Claims19
A method for developing a subterranean geomechanical model of a complex geological environment, the method comprising:
- calculating, using one or more processors, a pore pressure field, a stress field, a geomechanics property field, and a geological structure field from a geological concept model constructed using at least one of historical data and real-time data obtained at one or more locations within the complex geological environment;
- geostatistically interpolating, using the one or more processors, scalars, vectors, and tensors from the calculated pore pressure field, the calculated stress field, the calculated geomechanics property field, and the calculated geological structure field to construct a geostatistical geomechanical model of the geological environment, wherein geostatistically interpolating the tensors comprises:
- decomposing the tensors into one or more components,
- propagating the one or more components to another location within the complex geological environment, and
- combining the one or more components at the another location within the complex geological environment to form a new tensor representative of one or more estimated properties of the another location;
- and
- applying the geostatistical geomechanical model to:
- targeting reservoirs, preparing well drilling, or performing a local wellbore stability analysis for proposed wellbore trajectories.
A system for generating a subterranean geomechanical model, the system comprising:
- a local central processing unit in communication with an input device;
- an interface in communication with the local central processing unit and configured to communicate with a remote processor and a database;
- and
- a memory unit in communication with the local central processing unit, the memory unit containing an operating system, a geomechanical model generation agent, and an operational parameters determination agent;
- a calculating module configured to calculate a pore pressure field, a stress field, a geomechanics property field, and a geological structure field from a geological concept model using at least one of historical data and real-time data obtained at one or more locations within the complex geological environment;
- a constructing module configured to construct a geostatistical geomechanical model of a geological environment from the calculated pore pressure field, the calculated stress field, the calculated geomechanics property field, and the calculated geological structure field, wherein the constructing module constructs the geostatistical geomechanical model of the geological environment by geostatistically interpolating, using the one or more processors, scalars, vectors, and tensors from the calculated pore pressure field, the calculated stress field, the calculated geomechanics property field, and the calculated geological structure field, wherein geostatistically interpolating the tensors comprises:
- decomposing the tensors into one or more components,
- propagating the one or more components to another location, and
- combining the one or more components at the another location to form a new tensor representative of one or more estimated properties of the another location;
- and
- an application module for apply the geostatistical geomechanical model to:
- targeting reservoirs, preparing well drilling, or performing a local wellbore stability analysis for proposed wellbore trajectories.
A non-transitory computer readable medium comprising a computer program, that when executed by one or more processors, cause the one or more processors to perform operations for developing a subterranean geomechanical model of a complex geological environment, wherein the operations comprise:
- calculating, using one or more processors, a pore pressure field, a stress field, a geomechanics property field, and a geological structure field from a geological concept model using at least one of historical data and real-time data obtained at one or more locations within the complex geological environment;
- geostatistically interpolating, using the one or more processors, scalars, vectors, and tensors from the calculated pore pressure field, the calculated stress field, the calculated geomechanics property field, and the calculated geological structure field to construct a geostatistical geomechanical model of the geological environment, wherein geostatistically interpolating the tensors comprises:
- decomposing the tensors into one or more components,
- propagating the one or more components to another location within the complex geological environment, and
- combining the one or more components at the another location within the complex geological environment to form a new tensor representative of one or more estimated properties of the another location;
- and
- applying the geostatistical geomechanical model to:
- targeting reservoirs, preparing well drilling, or performing a local wellbore stability analysis for proposed wellbore trajectories.
Dependencies are inferred from the claim text.