Modeling of non-newtonian fluids in subterranean reservoirs
AssigneeChevron U.S.A. Inc.
InventorPipat Likanapaisal
Life of this patent
Estimating the term…
Abstract
A computer-implemented reservoir prediction system, method, and software are provided for modeling the behavior of non-Newtonian fluids in subterranean reservoirs while accounting for shear-rate dependent viscosity and permeability reduction with a skin zone characterized by a traditional skin factor and an apparent skin factor. A non-Newtonian fluid injection pressure or a non-Newtonian fluid injection rate is computed at steady-state responsive to reservoir data associated with a subterranean reservoir, injection data for a non-Newtonian fluid, and fluid data for the non-Newtonian fluid. The shear-rate dependent viscosity can further be applied to a well model in numerical reservoir simulation to improve the well model.
Claims19
A computer-implemented method for modeling the behavior of non-Newtonian fluids in subterranean reservoirs, the method comprising:
- (a) providing reservoir data associated with a subterranean reservoir;
- (b) providing injection data for a non-Newtonian fluid;
- (c) providing fluid data for the non-Newtonian fluid;
- and
- (d) computing a non-Newtonian fluid injection rate at steady-state while accounting for shear-rate dependent viscosity and permeability reduction with a skin zone characterized by a traditional skin factor and an apparent skin factor.
A computer-implemented method for modeling the behavior of non-Newtonian fluids in subterranean reservoirs, the method comprising:
- (a) providing reservoir data associated with a subterranean reservoir;
- (b) providing injection data for a non-Newtonian fluid;
- (c) providing fluid data for the non-Newtonian fluid;
- and
- (d) computing a non-Newtonian fluid injection pressure at steady-state while accounting for shear-rate dependent viscosity and permeability reduction with a skin zone characterized by a traditional skin factor and an apparent skin factor.
A system for modeling the behavior of non-Newtonian fluids in subterranean reservoirs, the system comprising:
- a database configured to store data comprising reservoir data associated with a subterranean reservoir, injection data for a non-Newtonian fluid, and fluid data for the non-Newtonian fluid;
- a computer processer configured to receive the stored data from the database, and to execute software responsive to the stored data;
- and
- a software program executable on the computer processer, the software program comprising a fluid calculator that computes a non-Newtonian fluid injection pressure or a non-Newtonian fluid injection rate at steady-state while accounting for shear-rate dependent viscosity and permeability reduction with a skin zone characterized by a traditional skin factor and an apparent skin factor.
A non-transitory processor readable medium containing computer readable instructions for modeling the behavior of non-Newtonian fluids in subterranean reservoirs, the computer readable instructions comprising:
- a fluid calculator that computes a non-Newtonian fluid injection pressure or a non-Newtonian fluid injection rate at steady-state while accounting for shear-rate dependent viscosity and permeability reduction with a skin zone characterized by a traditional skin factor and an apparent skin factor, the non-Newtonian fluid injection pressure or the non-Newtonian fluid injection rate being computed responsive to reservoir data associated with a subterranean reservoir, injection data for a non-Newtonian fluid, and fluid data for the non-Newtonian fluid.
Dependencies are inferred from the claim text.