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

Title: Numerical simulations of depressurization-induced gas production from an interbedded turbidite gas hydrate-bearing sedimentary section in the offshore India: Site NGHP-02-16 (Area-B)

Journal Article · · Marine and Petroleum Geology
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [4];  [5]; ORCiD logo [2]
  1. National Energy Technology Lab. (NETL), Pittsburgh, PA (United States); AECOM, Pittsburgh, PA (United States)
  2. National Energy Technology Lab. (NETL), Pittsburgh, PA (United States)
  3. National Energy Technology Lab. (NETL), Pittsburgh, PA (United States); Univ. of Pittsburgh, PA (United States)
  4. National Energy Technology Lab. (NETL), Pittsburgh, PA (United States); Rensselaer Polytechnic Inst., Troy, NY (United States)
  5. U.S. Geological Survey, Denver, CO (United States)

The recent National Gas Hydrate Program Expedition 02 (NGHP-02) identified the existence of gas hydrate-bearing sand reservoirs at a number of sites in the offshore of India including Site NGHP-02-16 in Area-B of the Krishna-Godavari Basin. The architecture of that gas hydrate accumulation is characterized by thin, gas hydrate-bearing, high quality sand layers interbedded with mud layers within a turbidite sedimentary interval. The lowest gas hydrate-bearing layer contacting a thinly-interbedded saline aquifer designates the base of the gas hydrate stability zone (BGHSZ). The proximity of the BGHSZ and the average temperature around 20 °C make the reservoir a favorable target for hydrate destabilization by means of the depressurization method. The results of the reservoir simulations indicate high gas production potential from this marine gas hydrate deposit with manageable concomitant water production using a well completion design that hydraulically isolates layers with water-saturated sands. Using a detailed geological input model, the predicted cumulative gas rates reach ~3.1 × 104 m3/day (~1.1 MMscf/day) after 90 days of continuous depressurization and demonstrate sustained production rates ~3.0 × 104 m3/day (~1.0 MMscf/day) after 5 years of production. The interbedded nature of this gas hydrate occurrence promotes the development of horizontal dissociation interfaces between gas hydrate-bearing sand and mud layers. As a result, non-uniform gas production along the horizontal interfaces becomes a primary determinant of reservoir performance. Simulation cases have been executed to determine the impact of the uncertainty in in situ reservoir permeability and the manner in which intrinsic permeability dynamically changes during dissociation in response to the imposed effective stress increase. Here, the cases based on low initial effective permeability and high sensitivity of compaction to stress result in the least favorable production predictions.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
FE0004000
OSTI ID:
1607771
Journal Information:
Marine and Petroleum Geology, Vol. 108, Issue C; ISSN 0264-8172
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 63 works
Citation information provided by
Web of Science

References (46)

Key aspects of numerical analysis of gas hydrate reservoir performance: Alaska North Slope Prudhoe Bay Unit “L-Pad” hydrate accumulation journal March 2018
Regional long-term production modeling from a single well test, Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope journal February 2011
Micro- and macro-mechanical behaviour of DEM crushable materials journal August 2008
India National Gas Hydrate Program Expedition 02 summary of scientific results: Numerical simulation of reservoir response to depressurization journal October 2019
India National Gas Hydrate Program Expedition 02 summary of scientific results: Evaluation of natural gas-hydrate-bearing pressure cores journal October 2019
Prospecting for marine gas hydrate resources journal February 2016
Occurrence of gas hydrate in Oligocene Frio sand: Alaminos Canyon Block 818: Northern Gulf of Mexico journal September 2009
India National Gas Hydrate Program Expedition 02 Summary of Scientific Results: Gas hydrate systems along the eastern continental margin of India journal October 2019
Geologic implications of gas hydrates in the offshore of India: Results of the National Gas Hydrate Program Expedition 01 journal December 2014
Permeability anisotropy and relative permeability in sediments from the National Gas Hydrate Program Expedition 02, offshore India journal October 2019
Methane hydrate stability in pore water: A simple theoretical approach for geophysical applications journal January 1997
Thermophysical Properties of Methane journal April 1989
High-resolution seismic characterization of the gas and gas hydrate system at Green Canyon 955, Gulf of Mexico, USA journal April 2017
Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Overview of scientific and technical program journal February 2011
Physical property characteristics of gas hydrate-bearing reservoir and associated seal sediments collected during NGHP-02 in the Krishna-Godavari Basin, in the offshore of India journal October 2019
Pressure core analysis of geomechanical and fluid flow properties of seals associated with gas hydrate-bearing reservoirs in the Krishna-Godavari Basin, offshore India journal October 2019
Compressibility and particle crushing of Krishna-Godavari Basin sediments from offshore India: Implications for gas production from deep-water gas hydrate deposits journal October 2019
Permeability of Laboratory-Formed Methane-Hydrate-Bearing Sand: Measurements and Observations Using X-Ray Computed Tomography journal March 2011
Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production journal February 2017
Permeability of sediment cores from methane hydrate deposit in the Eastern Nankai Trough journal September 2015
Comparison of kinetic and equilibrium reaction models in simulating gas hydrate behavior in porous media journal June 2007
Geologic implications of gas hydrates in the offshore of India: Krishna–Godavari Basin, Mahanadi Basin, Andaman Sea, Kerala–Konkan Basin journal December 2014
India National Gas Hydrate Program Expedition-02: Operational and technical summary journal October 2019
Assessing the geomechanical stability of interbedded hydrate-bearing sediments under gas production by depressurization at NGHP-02 Site 16 journal October 2019
Determination of methane concentrations in water in equilibrium with sI methane hydrate in the absence of a vapor phase by in situ Raman spectroscopy journal January 2008
Thermal conductivity of selected claystones and mudstones from England journal March 1998
Feasibility of gas production from a gas hydrate accumulation at the UBGH2-6 site of the Ulleung basin in the Korean East Sea journal August 2013
Toward Production From Gas Hydrates: Current Status, Assessment of Resources, and Simulation-Based Evaluation of Technology and Potential journal October 2009
Numerical studies of gas production from several CH4 hydrate zones at the Mallik site, Mackenzie Delta, Canada journal August 2004
Thermal properties of highly saturated methane hydrate-bearing sediments recovered from the Krishna–Godavari Basin journal October 2019
Numerical simulations of depressurization-induced gas production from gas hydrate reservoirs at the Walker Ridge 313 site, northern Gulf of Mexico journal June 2012
Geotechnical Properties of Core Samples Recovered from Seabed Ground in East Nankai Trough [東部南海トラフ海底地盤から採取したコア試料の地盤工学的性質] journal January 2009
A study of caprock hydromechanical changes associated with CO2-injection into a brine formation journal March 2002
Scientific results of the Second Gas Hydrate Drilling Expedition in the Ulleung Basin (UBGH2) journal November 2013
Effect of temperature and pressure on the solubility of carbon dioxide in water in the presence of gas hydrate journal November 2001
National Gas Hydrate Program expedition 02: Identification of gas hydrate prospects in the Krishna-Godavari Basin, offshore India journal October 2019
Methane hydrate formation in turbidite sediments of northern Cascadia, IODP Expedition 311 journal July 2008
Numerical simulations of sand migration during gas production in hydrate-bearing sands interbedded with thin mud layers at site NGHP-02-16 journal October 2019
Critical state soil constitutive model for methane hydrate soil: MHCS MODEL journal March 2012
A Closed-form Equation for Predicting the Hydraulic Conductivity of Unsaturated Soils1 journal January 1980
Multi-measurement approach for establishing the base of gas hydrate occurrence in the Krishna-Godavari Basin for sites cored during expedition NGHP-02 in the offshore of India journal October 2019
Simultaneous determination of thermal conductivity, thermal diffusivity and specific heat in sI methane hydrate journal May 2007
Thermal responses of a gas hydrate-bearing sediment to a depressurization operation journal January 2017
Permeability variation and anisotropy of gas hydrate-bearing pressure-core sediments recovered from the Krishna–Godavari Basin, offshore India journal October 2019
Pressure core based onshore laboratory analysis on mechanical properties of hydrate-bearing sediments recovered during India's National Gas Hydrate Program Expedition (NGHP) 02 journal October 2019
Consolidation and hardening behavior of hydrate-bearing pressure-core sediments recovered from the Krishna–Godavari Basin, offshore India journal October 2019

Cited By (1)

Gas production from a silty hydrate reservoir in the South China Sea using hydraulic fracturing: A numerical simulation journal May 2019