Utchem Software

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Utchem Software Modeling

Reservoir Simulators GPAS GPAS is a three-dimensional multicomponent multiphase fully implicit finite difference and finite volume compositional simulator with the parallel processing capability. It 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 Peng-Robinson EOS is used for hydrocarbon phase behavior calculations. 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. Ebook Manajemen Pemasaran Philip Kotler Definition. The linear solvers from PETSc package developed at Argonne National Laboratory are used for the solution of underlying linear equations. The computational framework supports parallel computations on distributed memory computers using message passing. On multiprocessor computers, the reservoir domain is divided into several subdomains equal to the number of processors allocated for the run. The computations associated with each of these subdomains are distributed to individual processors.

The communication between the processors is based on the message passing interface (MPI). Some of the applications of GPAS are: • Water flooding • Miscible gas flooding • Immiscible gas flooding • Carbon sequestration • Tracers • Surfactant/polymer flooding • Steam flooding. Acer Wlan 11G Usb Dongle Driver Xp. Four phases are modeled. The phases are a single component gas phase and up to three liquid phases - aqueous, oleic, and microemulsion - depending on the relative amounts and effective electrolyte concentration (salinity) of the surfactant/oil/water phase environment.

UTCHEM Simulator, UTCHEM is a multicomponent, multiphase, three-dimensional chemical compositional reservoir simulation model. The flow and transport equations are as.

The key to accurate and realistic chemical flooding is to model the complex microemulsion phase behavior and the various properties associated with these phases (such as interfacial tension, relative permeability, capillary pressure, capillary desaturation and viscosity) and factors that determine the behavior of the species in these phases such as dispersion, adsorption and cation exchange. The resulting flow equations are solved using a block-centered finite-difference scheme. The solution method is implicit in pressure and explicit in concentration (IMPES-like).

A third-order spatial discretization is used and in order to increase the stability and robustness of the third-order method, a flux limiter based on the total-variation-diminishing scheme has been added. UTCHEM has been widely used to simulate laboratory and field scale processes such as water flooding, tracers in water, polymer, surfactant/polymer, profile control using gel, and high pH alkaline/surfactant/polymer. The code has also been modified for applications to groundwater contamination and remediation. Some of the applications of UTCHEM are: • Surfactant flooding • High pH alkaline/surfactant/polymer flooding • Polymer flooding • Conformance control using polymer gels • Tracer tests • Formation damage • Soil remediation • Microbial enhanced oil recovery • Surfactant/foam. UTCOMP UTCOMP is an isothermal three-dimensional, EOS compositional reservoir simulator capable of modeling up to four-phase flow, namely, an aqueous phase, an oleic phase, a gaseous phase, and a second nonaqueous liquid phase. A finite-difference method that is third-order correct in space is used to reduce numerical dispersion and grid orientation effects when solving the material balance equations.

We have dramatically improved the stability of the third-order method by adding a flux limiter that makes the scheme total variation diminish. Phase behavior is calculated using the Peng-Robinson equation of state or a modified version of the Redlich-Kwong equation of state.

A rigorous Gibbs stability test is performed to determine the number of coexisting phases. A phase identification test is performed to label each phase for subsequent property calculations.

Several relative permeability models are available as options. Physical dispersion is modeled using the full dispersion tensor. Some of the applications of UTCOMP are: • Miscible and immiscible gas injection processes • CO2 Sequestration in deep saline aquifer and oil reservoirs • Gas condensate reservoirs • Tracer tests • Mobility control using foam or polymer • Asphaltene precipitation and deposition. To become a sponsor of the Reservoir Simulation Joint Industry Research Project, please contact Dr. Kamy Sephernoori to receive a copy of the research participation agreement to be executed by your company and The University of Texas at Austin. The membership fee for the project is USD $50,000 per year.

As with all Industrial Affiliates programs at The University of Texas at Austin, intellectual property rights cannot be granted, and no specific reporting requirements may be imposed. However, we will host an annual workshop and provide papers, student theses and dissertations, and reports of our research accomplishments resulting from the project.

RS-JIP members will have access to our computer codes upon their release. Members also receive updates as new versions of the codes become available. Contact information for Dr. Seperhnoori: Dr.

Kamy Sepehrnoori Center for Petroleum and Geosystems Engineering The University of Texas at Austin 200 E. Dean Keeton C0304 Austin, Texas Phone: (512) 471-0231 FAX: (512) 471-9678 Email.