Numerical modeling of steam injection for the removal of nonaqueous phase liquids from the subsurface: 1. Numerical formulation

Falta, Ronald W.; Pruess, Karsten; Javandel, Iraj; Witherspoon, P.A.

doi:10.1029/91wr02526

Cited by 176 publications

(72 citation statements)

References 54 publications

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“…Gas-phase enthalpy and internal energy are computed from component vapor quantities and gas-phase mass fractions [Falta et al 1990a], according to Equations (4.6.1) and (4.6.2). Water vapor enthalpy is computed from the steam table formulations as a function of temperature and pressure, according to Equation (4.6.3).…”

Section: Gas-phase Enthalpy and Internal Energymentioning

confidence: 99%

STOMP Subsurface Transport Over Multiple Phases Version 2.0 Theory Guide

White¹,

Oostrom²

2000

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In writing this guide for the STOMP simulator, the authors have assumed that the reader comprehends concepts and theories associated with (multiple-phase) hydrology, heat transfer, thermodynamics, radioactive chain decay, and relative permeability-saturation-capillary pressure constitutive functions. The authors further assume that the reader is familiar with the computing environment on which they plan to compile and execute the STOMP simulator.The STOMP simulator requires an ANSI FORTRAN 77 compiler to generate an executable code. The memory requirements for executing the simulator are dependent on the complexity of physical system to be modeled and the size and dimensionality of the computational domain. Likewise execution speed depends on the problem complexity, size and dimensionality of the computational domain, and computer performance. One-dimensional problems of moderate complexity can be solved on conventional desktop computers, but multidimensional problems involving complex flow and transport phenomena typically require the power and memory capabilities of workstation or mainframe type computer systems.iii iv SummaryThe U. S. Department of Energy, through the Office of Technology Development, has requested the demonstration of remediation technologies for the cleanup of volatile organic compounds and associated radionuclides within the soil and groundwater at arid sites. This demonstration program, called the VOC-Arid Soils Integrated Demonstration Program (Arid-ID), has been initially directed at a volume of unsaturated and saturated soil contaminated with carbon tetrachloride, on the Hanford Site near Richland, Washington. A principal subtask of the Arid-ID program involves the development of an integrated engineering simulator for evaluating the effectiveness and efficiency of various remediation technologies. The engineering simulator's intended users include scientists and engineers who are investigating subsurface phenomena associated with remediation technologies. Principal design goals for the engineer simulator include broad applicability, verified algorithms, quality assurance controls, and validated simulations against laboratory and field-scale experiments. An important goal for the simulator development subtask involves the ability to scale laboratory and field-scale experiments to fullscale remediation technologies, and to transfer acquired technology to other arid sites. The STOMP (Subsurface Transport Over Multiple Phases) simulator has been developed by the Pacific Northwest National Laboratory (a) for modeling remediation technologies. Information on the use, application, and theoretical basis of the STOMP simulator are documented in three companion guide manuals. This manual, the Theory Guide (Version 2.0), provides the most recent theory and discussions on the governing equations, constitutive relations, and numerical solution algorithms for the STOMP simulator.The STOMP simulator's fundamental purpose is to produce numerical predictions of thermal and hydrogeologic flow and trans...

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Section: Gas-phase Enthalpy and Internal Energymentioning

confidence: 99%

STOMP Subsurface Transport Over Multiple Phases Version 2.0 Theory Guide

White¹,

Oostrom²

2000

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“…These models show that viscous gas transport can be caused by a variety of processes including the injection and extraction of air or vapor [e.g. Massmann, 1989;Falta et al, 1992], the volatilization of organic compounds [e.g., Falta et al, 1989;Mendoza and Frind, 1990;Gaganis et al, 2004], sustained underpressurization relative to atmospheric conditions in basements of buildings and the adjacent sediments [e.g., Hers et al, 2002;Abreu and Johnson, 2005], barometric pumping [e.g., Massmann and Farrier, 1992], displacement due to infiltrating recharge water [e.g., Celia and Binning, 1992], and temperature changes [e.g., White, 1995].…”

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confidence: 99%

Coupling between geochemical reactions and multicomponent gas and solute transport in unsaturated media: A reactive transport modeling study

Molins

Mayer

2007

Water Resources Research

107

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[1] The two-way coupling that exists between biogeochemical reactions and vadose zone transport processes, in particular gas phase transport, determines the composition of soil gas. To explore these feedback processes quantitatively, multicomponent gas diffusion and advection are implemented into an existing reactive transport model that includes a full suite of geochemical reactions. Multicomponent gas diffusion is described on the basis of the dusty gas model, which accounts for all relevant gas diffusion mechanisms. The simulation of gas attenuation in partially saturated landfill soil covers, methane production, and oxidation in aquifers contaminated by organic compounds (e.g., an oil spill site) and pyrite oxidation in mine tailings demonstrate that both diffusive and advective gas transport can be affected by geochemical reactions. Methane oxidation in landfill covers reduces the existing upward pressure gradient, thereby decreasing the contribution of advective methane emissions to the atmosphere and enhancing the net flux of atmospheric oxygen into the soil column. At an oil spill site, methane oxidation causes a reversal in the direction of gas advection, which results in advective transport toward the zone of oxidation both from the ground surface and the deeper zone of methane production. Both diffusion and advection contribute to supply atmospheric oxygen into the subsurface, and methane emissions to the atmosphere are averted. During pyrite oxidation in mine tailings, pressure reduction in the reaction zone drives advective gas flow into the sediment column, enhancing the oxidation process. In carbonate-rich mine tailings, calcite dissolution releases carbon dioxide, which partly offsets the pressure reduction caused by O 2 consumption.Citation: Molins, S., and K. U. Mayer (2007), Coupling between geochemical reactions and multicomponent gas and solute transport in unsaturated media: A reactive transport modeling study, Water Resour. Res., 43, W05435,

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“…It can also been seen from Table 2 that with the increase of steam quality and overheated degree, the specific heat enthalpy, the specific heat, and the latent heat of vaporization increase simultaneously, therefore the region for steam to reduce the oil viscosity is increasingly larger, more and more oil with high mobility comes into the high-temperature regions with high oil relative permeability, and hence the good production performance of cyclic superheated steam injection can be expected (Falta et al, 1992;Li et al, 2012).…”

Section: Reservoir Engineering Analysismentioning

confidence: 94%

Superheated steam injection in North Кенкияк shallow heavy oil reservoir

Xu¹

2013

J. Geol. Min. Res.

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This paper presents an integrated study on the superheated steam injection in the North Кенкияк Field, Kazakhstan. The methodologies cover investigation of mechanisms of superheated steam in recovery, lab experiment, and numerical simulation. The study indicates that the injection of superheated steam can cause rock wettability conversion which is favorable to recovery. The higher the heat enthalpy, the larger the specific volume and latent heat of vaporization of superheated steam would result in the better production and economic performance. The study result was further conformed in the pilot test. Field fulfillment is optimized and scheduled.

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Numerical modeling of steam injection for the removal of nonaqueous phase liquids from the subsurface: 1. Numerical formulation

Cited by 176 publications

References 54 publications

STOMP Subsurface Transport Over Multiple Phases Version 2.0 Theory Guide

STOMP Subsurface Transport Over Multiple Phases Version 2.0 Theory Guide

Coupling between geochemical reactions and multicomponent gas and solute transport in unsaturated media: A reactive transport modeling study

Superheated steam injection in North Кенкияк shallow heavy oil reservoir

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