skip to main content

Title: TOURGHREACT: A Simulation Program for Non-isothermal MultiphaseReactive Geochemical Transport in Variably Saturated GeologicMedia

TOUGHREACT is a numerical simulation program for chemically reactive non-isothermal flows of multiphase fluids in porous and fractured media. The program was written in Fortran 77 and developed by introducing reactive geochemistry into the multiphase fluid and heat flow simulator TOUGH2. A variety of subsurface thermo-physical-chemical processes are considered under a wide range of conditions of pressure, temperature, water saturation, ionic strength, and pH and Eh. Interactions between mineral assemblages and fluids can occur under local equilibrium or kinetic rates. The gas phase can be chemically active. Precipitation and dissolution reactions can change formation porosity and permeability. The program can be applied to many geologic systems and environmental problems, including geothermal systems, diagenetic and weathering processes, subsurface waste disposal, acid mine drainage remediation, contaminant transport, and groundwater quality. Here we present two examples to illustrate applicability of the program: (1) injectivity effects of mineral scaling in a fractured geothermal reservoir and (2) CO2 disposal in a deep saline aquifer.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
877615
Report Number(s):
LBNL--56740
R&D Project: G31902; BnR: EB4005020; TRN: US200608%%517
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Computer & Geosciences; Journal Volume: 32; Journal Issue: 2; Related Information: Journal Publication Date: January 2006
Research Org:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org:
USDOE. Assistant Secretary for Energy Efficiency andRenewable Energy. Office of the Solar and Energy TechnologyProgram
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; 58 GEOSCIENCES; ACID MINE DRAINAGE; DISSOLUTION; FORTRAN; GEOCHEMISTRY; GEOTHERMAL SYSTEMS; HEAT FLUX; KINETICS; PERMEABILITY; POROSITY; PRECIPITATION; SIMULATION; SIMULATORS; TRANSPORT; WASTE DISPOSAL; WATER SATURATION; WEATHERING Geothermal Legacy; Reactive fluid flow Geochemical transport TOUGHREACTHydrothermal systems Mineral scaling Clay swelling Injectivityenhancement CO2 geologic sequestration Saline aquifer