Systems and methods for calibration of indeterministic subsurface discrete fracture network models
AssigneeSim Tech LLC
InventorsJijun Miao, Wei Yu, Mauricio X. Fiallos Torres, Hongbing Xie
Life of this patent
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Abstract
Techniques for calibration of a simulation of a subterranean region having complex fracture geometries. Calibration of indeterministic subsurface discrete fracture network models is performed via non-intrusive embedded discrete fracture modeling formulations applied in conjunction with well testing interpretation and numerical simulation. Subterranean fracture networks are characterized dynamically by embedded discrete fracture modeling to accurately and efficiently determine an optimal fracture model.
Claims24
A method for calibrating a simulation of a subterranean region having fracture geometries, comprising:
- obtaining discrete fracture network data representing geometrical characteristics of a subterranean region;
- calibrating the discrete fracture network data using well test data representing at least one well in the subterranean region;
- applying an EDFM formulation to the calibrated discrete fracture network data to produce model data;
- identifying fracture shortest paths between multiple points within the discrete fracture network data using the produced model data;
- performing a history matching operation to select a data set from the produced model data;
- and
- generating a simulation of the subterranean region using the selected data set.
A system for calibration of a simulation of a subterranean region having fracture geometries, comprising:
- at least one processor configured to execute computer instructions to perform functions including to:
- get discrete fracture network data representing geometrical characteristics of a subterranean region;
- calibrate the discrete fracture network data using well test data representing at least one well in the subterranean region;
- apply an EDFM formulation to the calibrated discrete fracture network data to produce model data;
- identify fracture shortest paths between multiple points within the discrete fracture network data using the produced model data;
- perform a history matching operation to select a data set from the produced model data;
- and
- generate a simulation of the subterranean region using the selected data set.
A system for calibration of a simulation of a subterranean region having fracture geometries, comprising:
- at least one processor configured to execute computer instructions to perform functions including to:
- select P10, P50, and P90 scenario data from data representing multiple subterranean single-well discrete fracture networks;
- calibrate the selected P10, P50, and P90 scenario data using well test data;
- apply an EDFM formulation to the calibrated P10, P50, and P90 scenario data to produce model data for each scenario;
- identify fracture shortest paths between multiple points using the produced model data;
- perform a history matching operation with the P10, P50, and P90 scenarios using well production data;
- select a data set from the P10, P50, or P90 scenarios with a history matching degree meeting a specified criterion;
- characterize a multiple-well model using the selected data set;
- and
- generate a simulation of the multiple-well model.
Dependencies are inferred from the claim text.