Development of a Thermodynamically Consistent, Fully Implicit, Equation-of-State, Compositional Steamflood Simulator

1991 ◽  
Author(s):  
K.M. Brantferger ◽  
G.A. Pope ◽  
K. Sepehrnoori
Keyword(s):  
Equation Of State ◽  
Implicit Equation ◽  
Fully Implicit

A Fully Implicit, Parallel, Compositional Chemical Flooding Simulator

SPE Journal ◽  
2007 ◽  
Vol 12 (03) ◽  
pp. 322-338 ◽  
Author(s):  
Choongyong Han ◽  
Mojdeh Delshad ◽  
Kamy Sepehrnoori ◽  
Gary Arnold Pope
Keyword(s):  
Equation Of State ◽  
Interfacial Tension ◽  
Phase Behavior ◽  
Hybrid Approach ◽  
Material Balance ◽  
Chemical Flooding ◽  
Balance Equations ◽  
Cubic Equation ◽  
Fully Implicit ◽  
Simulation Results

Summary A fully implicit, parallel, compositional reservoir simulator has been developed that includes both a cubic equation of state model for the hydrocarbon phase behavior and Hand's rule for the surfactant/oil/brine phase behavior. The aqueous species in the chemical model include surfactant, polymer, and salt. The physical property models include surfactant/oil/brine phase behavior, interfacial tension, viscosity, adsorption, and relative permeability as a function of trapping number. The fully implicit simulation results were validated by comparison with results from our IMPEC chemical flooding simulator (UTCHEM). The results indicate that the simulator scales well using clusters of workstations. Also, simulation results from parallel runs are identical to those using a single processor. Field-scale surfactant/polymer flood simulations were successfully performed with over 1,000,000 gridblocks using multiple processors. Introduction Chemical flooding is a method to improve oil recovery that involves the injection of a solution of surfactant and polymer followed by a polymer solution. The surfactant causes the mobilization of oil by decreasing interfacial tension, whereas the polymer increases the sweep efficiency by lowering the mobility ratio. Chemical flooding has the potential to recover a very high fraction of the remaining oil in a reservoir, but the process needs to be designed to be both cost effective and robust, which requires careful optimization. Several reservoir simulators with chemical flooding features have been developed as a tool for optimizing the design (Delshad et al. 1996; Schlumberger 2004; Computer Modeling 2004). The University of Texas chemical flooding simulator, UTCHEM (Delshad et al. 1996) is an example of a simulator that has been used for this purpose. However, because UTCHEM is an Implicit Pressure and Explicit Concentration (IMPEC) formulation and in its current form cannot run on parallel computers, realistic surfactant/polymer flooding simulations are limited to around 100,000 gridblocks because of small timestep restrictions and insufficient memory. Recently, the appropriate chemical module was added to the fully implicit, parallel, EOS compositional simulator called GPAS (General Purpose Adaptive Simulator) based on a hybrid approach (John et al. 2005). GPAS uses a cubic equation of state model for the hydrocarbon phase behavior and the parallel and object-based Fortran 95 framework for managing memory, input/output, and the necessary communication between processors (Wang et al. 1999; Parashar et al. 1997). In the hybrid approach implemented in GPAS, the material balance equations for hydrocarbon and water components are solved implicitly first. Then, the material balance equations for the aqueous components such as surfactant, polymer, and electrolytes are solved explicitly using the updated phase fluxes, saturations, and densities.

scholarly journals Development of an equation of state fully implicit compositional model.

2000 ◽  
Vol 65 (4) ◽  
pp. 342-351
Author(s):  
Toshinori Nakashima ◽  
Nario Arihara ◽  
Hideaki Takeda ◽  
Kozo Sato ◽  
Nintoku Yazawa
Keyword(s):  
Equation Of State ◽  
Compositional Model ◽  
Fully Implicit

A General Unstructured-Grid, Equation-of-State-Based, Fully Implicit Thermal Simulator for Complex Reservoir Processes

SPE Journal ◽  
2009 ◽  
Vol 14 (02) ◽  
pp. 355-361 ◽  
Author(s):  
Kai Liu ◽  
Ganesan Subramanian ◽  
David I. Dratler ◽  
Jean-Pierre Lebel ◽  
Jeffrey A. Yerian
Keyword(s):  
Equation Of State ◽  
Unstructured Grid ◽  
Fully Implicit

scholarly journals Numerical code of the neutrino-transfer in three dimensions for core-collapse supernovae

2011 ◽  
Vol 7 (S279) ◽  
pp. 395-396
Author(s):  
Kohsuke Sumiyoshi ◽  
Shoichi Yamada
Keyword(s):  
Equation Of State ◽  
Radiation Transfer ◽  
Three Dimensions ◽  
Numerical Code ◽  
Core Collapse ◽  
Boltzmann Equations ◽  
Fully Implicit ◽  
Basic Set ◽  
Explosion Mechanism ◽  
Background Models

AbstractWe develop a new numerical code of the multi-energy and multi-angle neutrino-radiation transfer in three dimensions (3D) for core-collapse supernovae. Our 3D code to solve the Boltzmann equations is based on the discretized-ordinate (SN) method with a fully implicit differencing for time advance. A basic set of neutrino reactions is implemented in the collision terms together with a realistic equation of state. By following the time evolution of neutrino distributions in six dimensions (3 spatial and 3 momentum-space) by the 3D Boltzmann solver, we study the 3D feature of neutrino transfer for given background models of supernova cores in order to understand the explosion mechanism through neutrino heating in multi dimensions.

Equation of state for hard convex body fluid mixtures

1998 ◽  
Vol 94 (5) ◽  
pp. 809-814 ◽  
Author(s):  
C. BARRIO ◽  
J.R. SOLANA
Keyword(s):  
Equation Of State ◽  
Convex Body ◽  
Body Fluid ◽  
Fluid Mixtures

Equation of state of shock compressed liquid deuterium

2000 ◽  
Vol 10 (PR5) ◽  
pp. Pr5-281-Pr5-286
Author(s):  
M. Ross ◽  
L. H. Yang ◽  
G. Galli
Keyword(s):  
Equation Of State ◽  
Compressed Liquid

ON THE EQUATION OF STATE OF THE WIGNER MODEL

1980 ◽  
Vol 41 (C2) ◽  
pp. C2-83-C2-83
Author(s):  
Ph. Choquard
Keyword(s):  
Equation Of State
Sign in / Sign up

Export Citation Format

Share Document