skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A Mechanistic Model for Relative Permeability of Gas and Water Flow in Hydrate-Bearing Porous Media With Capillarity

Journal Article · · Water Resources Research
DOI:https://doi.org/10.1029/2018WR024278· OSTI ID:1569749

Abstract Lack of mechanistic models to describe petrophysical properties of mobile phases in gas hydrate‐bearing sediments is one of the key challenges in accurately predicting gas production. The major drawback of empirical models that are used to fit a relative permeability curve for mobile phases in gas hydrate‐bearing sediments is that they are based on experimental data, which are limited, and not able to account for hydrate morphology in pore space. This study proposes a relative permeability model that is mechanistic in nature and developed to account capillarity by building on the original nonempirical relative permeability model that assumes negligible capillary pressure. The proposed model implicitly accounts for capillarity with the help of four empirical parameters (two for each mobile phase) that incorporate each mobile phase pressure. It is shown that the proposed model provides an improved match to relative permeability data (derived from pore‐scale simulation of gas hydrate‐bearing sediments) than nonempirical relative permeability by accounting for the effect of capillary pressure. Additionally, unlike fully empirical models that can predict relative permeabilities reliably only at gas hydrate saturations for which experimental data are available, the proposed model only requires fitting the empirical parameters once with experimental data at any single gas hydrate saturation and then it can then be used to predict relative permeability at any gas hydrate saturation. The mechanistic nature of the proposed model allows studying relative permeability of hydrate‐bearing sediments as a function of hydrate morphology and wettability (fluid phase distribution) besides other physical parameters of the model (e.g., porosity, gas, and water residual saturation). Based on the sensitivity analysis of different hydrate morphologies on gas/water relative permeability, it is found that gas relative permeability is sensitive to hydrate morphologies, while water relative permeability shows little dependency on hydrate localization in pore space.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
89243318CFE000003
OSTI ID:
1569749
Alternate ID(s):
OSTI ID: 1509753
Report Number(s):
NETL-PUB-22142
Journal Information:
Water Resources Research, Vol. 55, Issue 4; ISSN 0043-1397
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

References (54)

The Electrical Resistivity Log as an Aid in Determining Some Reservoir Characteristics journal December 1942
Relation between relative permeability and hydrate saturation in Shenhu area, South China Sea journal June 2014
Methane hydrates as potential energy resource: Part 2 – Methane production processes from gas hydrates journal July 2010
The water retention curve and relative permeability for gas production from hydrate-bearing sediments: pore-network model simulation: WATER RETENTION AND PERMEABILITY journal August 2016
Pore-scale identification of multi-phase spatial distribution of hydrate bearing sediment journal July 2018
Effect of methane hydrate morphology on compressional wave velocity of sandy sediments: Analysis of pressure cores obtained in the Eastern Nankai Trough journal September 2015
Effect of capillary term parameters on the thermodynamic modeling of methane hydrate formation in porous media journal September 2013
Three-Phase Relative Permeabilities from Displacement Experiments with Full Account for Capillary Pressure journal April 1998
Experimental investigation of gas-water relative permeability for gas-hydrate-bearing sediments from the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope journal February 2011
Greenland melt drives continuous export of methane from the ice-sheet bed journal January 2019
Numerical Studies of Gas Production From Class 2 and Class 3 Hydrate Accumulations at the Mallik Site, Mackenzie Delta, Canada journal June 2004
Computed Relative Permeability Drainage and Imbibition conference April 2013
Effects of Pore Sizes on Dissociation Temperatures and Pressures of Methane, Carbon Dioxide, and Propane Hydrates in Porous Media journal January 2002
Capillary effects on phase behavior of liquid and gaseous propane and dynamics of hydrate formation and dissociation in porous media journal June 2017
A new theoretical interpretation of Archie's saturation exponent journal January 2017
Elastic-wave velocity in marine sediments with gas hydrates: Effective medium modeling journal July 1999
Relative water and gas permeability for gas production from hydrate-bearing sediments journal June 2014
Effect of gas hydrate formation and decomposition on flow properties of fine-grained quartz sand sediments using X-ray CT based pore network model simulation journal August 2018
Methane beneath Greenland’s ice sheet is being released journal January 2019
Physical properties of hydrate-bearing sediments journal January 2009
Pore-scale modeling of flow in particle packs containing grain-coating and pore-filling hydrates: Verification of a Kozeny–Carman-based permeability reduction model journal September 2017
Numerical simulations for short-term depressurization production test of two gas hydrate sections in the Black Sea journal August 2017
Fundamental principles and applications of natural gas hydrates journal November 2003
Structural Investigation of Methane Hydrate Sediments by Microfocus X-ray Computed Tomography Technique under High-Pressure Conditions journal July 2006
The Measurement of Permeability of Porous Media with Methane Hydrate journal January 2011
Multiobjective optimization of the particle aspect ratio for gravel pack in a methane-hydrate reservoir using pore scale simulation journal September 2016
Physical Properties of Gas Hydrates: A Review journal January 2010
Laboratory validation of effective acoustic velocity models for samples bearing hydrates of different type journal March 2019
Experimental determination of permeability of porous media in the presence of gas hydrates journal August 2014
Exploration strategy for economically significant accumulations of marine gas hydrate journal January 2009
Methane hydrate stability and anthropogenic climate change journal January 2007
Production performance of gas hydrate accumulation at the GMGS2-Site 16 of the Pearl River Mouth Basin in the South China Sea journal November 2015
State-of-the-Art of Gas Hydrates and Relative Permeability of Hydrate Bearing Sediments journal May 2015
First observation of direct methane emission to the atmosphere from the subglacial domain of the Greenland Ice Sheet journal November 2018
Phase behavior of methane and carbon dioxide hydrates in meso- and macro-sized porous media journal December 2008
Numerical simulations of depressurization-induced gas production from gas hydrates using 3-D heterogeneous models of L-Pad, Prudhoe Bay Unit, North Slope Alaska journal September 2016
Numerical studies of gas production from several CH4 hydrate zones at the Mallik site, Mackenzie Delta, Canada journal August 2004
Effect of hydrate nucleation mechanisms and capillarity on permeability reduction in granular media: NUCLEATION-DEPENDENT PERMEABILITY journal September 2016
Mechanism of Fluid Displacement in Sands journal December 1942
Ostwald ripening changes the pore habit and spatial variability of clathrate hydrate journal February 2018
Capillary effects on hydrate stability in marine sediments journal January 2011
The effect of hydrate saturation on water retention curves in hydrate-bearing sediments: Water Retention Curves in THF HBS journal May 2016
Operation Overview of the 2002 Mallik Gas Hydrate Production Research Well Program at the Mackenzie Delta in the Canadian Arctic conference April 2013
Numerical simulation on gas production from hydrate reservoir at the 1st offshore test site in the eastern Nankai Trough journal March 2016
Observations of pore-scale growth patterns of carbon dioxide hydrate using X-ray computed microtomography journal March 2015
Potential methane reservoirs beneath Antarctica journal August 2012
Analysis of the influence of wettability on permeability in hydrate-bearing porous media using pore network models combined with computed tomography journal September 2015
Direct isotopic evidence of biogenic methane production and efflux from beneath a temperate glacier journal November 2018
Experimental determination of permeability in the presence of hydrates and its effect on the dissociation characteristics of gas hydrates in porous media journal January 2010
Comparison of methods to calculate relative permeability from capillary pressure in consolidated water-wet porous media: METHODS TO CALCULATE RELATIVE PERMEABILITY journal June 2006
Pore-Scale Visualization of Methane Hydrate-Bearing Sediments With Micro-CT journal June 2018
Permeability of porous solids journal January 1961
Calculation of Relative Permeability from Displacement Experiments journal December 1959
Methane hydrate stability and anthropogenic climate change journal January 2007