Measuring and modeling thermal conductivity of gas hydrate‐bearing sand

Huang, Duzi; Fan, Shuanshi

doi:10.1029/2004jb003314

Cited by 64 publications

(41 citation statements)

References 41 publications

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“…discuss the thermal properties of HBS. Laboratory measurements of thermal properties of methane HBS have been made by a number of researchers (Gupta et al, 2006;Handa, 1986;Huang and Fan, 2005;Moridis et al, 2005a;Rosenbaum et al, 2007;Turner et al, 2005;Waite et al, 2002;Waite et al, 2007) Two thermal properties are important -thermal conductivity and specific heat. Thermal diffusivity can be computed from these properties and the density of the medium.…”

Section: Laboratory-synthesized Samplesmentioning

confidence: 99%

Challenges, Uncertainties and Issues Facing Gas Production from Hydrate Deposits in Geologic Systems

Moridis

Collett

Pooladi‐Darvish

et al. 2010

SPE Unconventional Gas Conference

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The current paper complements the Moridis et al. (2009a) review of the status of the effort toward commercial gas production from hydrates. We aim to describe the concept of the gas hydrate petroleum system, to discuss advances, requirement and suggested practices in gas hydrate prospecting and GH deposit characterization, and to review the associated technical, economic and environmental challenges and uncertainties, including: the accurate assessment of producible fractions of the GH resource, the development of methodologies for identifying suitable production targets, the sampling of hydrate-bearing sediments and sample analysis, the analysis and interpretation of geophysical surveys of GH reservoirs, well testing methods and interpretation of the results, geomechanical and reservoir/well stability concerns, well design, operation and installation, field operations and extending production beyond sand-dominated GH reservoirs, monitoring production and geomechanical stability, laboratory investigations, fundamental knowledge of hydrate behavior, the economics of commercial gas production from hydrates, and the associated environmental concerns. SPE 131792A review paper by Moridis et al. (2009a) summarized the status of the effort for production from gas hydrates. The authors discussed the distribution of natural gas hydrate accumulations, the status of the primary international research and development R&D programs (including current policies, focus and priorities), and the remaining science and technological challenges facing commercialization of production. After a brief examination of GH accumulations that are well characterized and appear to be models for future development and gas production, they analyzed the role of numerical simulation in the assessment of the hydrate production potential, identified the data needs for reliable predictions, evaluated the status of knowledge with regard to these needs, discussed knowledge gaps and their impact, and reached the conclusion that the numerical simulation capabilities are quite advanced and that the related gaps are either not significant or are being addressed. Furthermore, Moridis et al. (2009a) reviewed the current body of literature relevant to potential productivity from different types of GH deposits, and determined that there are consistent indications of a large production potential at high rates over long periods from a wide variety of hydrate deposits. Finally, they identified (a) features, conditions, geology and techniques that are desirable in the selection of potential production targets, (b) methods to maximize production, and (c) some of the conditions and characteristics that render certain GH deposits undesirable for production.Objectives. The current paper complements the Moridis et al. (2009a) review of the status of the effort toward commercial gas production from hydrates. Its objectives are to describe the concept of the gas hydrate petroleum system, to discuss advances, requirement and suggested practices in gas hydrate prospecting an...

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Section: Laboratory-synthesized Samplesmentioning

confidence: 99%

Challenges, Uncertainties and Issues Facing Gas Production from Hydrate Deposits in Geologic Systems

Moridis

Collett

Pooladi‐Darvish

et al. 2010

SPE Unconventional Gas Conference

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“…Of the pore fluid constituents, methane hydrate, and water are reported to have similar thermal conductivities (~0.6 W·m −1 ·K −1 and~0.58 W·m −1 ·K −1 , respectively; [20,52,53]). The thermal conductivity of gas-bearing sediments is known to decrease linearly with decreasing water saturation because the thermal conductivity of a gas phase is the lowest among the constituents (e.g.,~0.026-0.038 W·m −1 ·K −1 for air at 27 • C and 0.1-20 MPa [53,54]).…”

Section: Variations In Thermal Conductivity and Electrical Resistancementioning

confidence: 99%

Geomechanical, Hydraulic and Thermal Characteristics of Deep Oceanic Sandy Sediments Recovered during the Second Ulleung Basin Gas Hydrate Expedition

et al. 2016

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This study investigates the geomechanical, hydraulic and thermal characteristics of natural sandy sediments collected during the Ulleung Basin gas hydrate expedition 2, East Sea, offshore Korea. The studied sediment formation is considered as a potential target reservoir for natural gas production. The sediments contained silt, clay and sand fractions of 21%, 1.3% and 77.7%, respectively, as well as diatomaceous minerals with internal pores. The peak friction angle and critical state (or residual state) friction angle under drained conditions were~26 • and~22 • , respectively. There was minimal or no apparent cohesion intercept. Stress-and strain-dependent elastic moduli, such as tangential modulus and secant modulus, were identified. The sediment stiffness increased with increasing confining stress, but degraded with increasing strain regime. Variations in water permeability with water saturation were obtained by fitting experimental matric suction-water saturation data to the Maulem-van Genuchen model. A significant reduction in thermal conductivity (from~1.4-1.6 to~0.5-0.7 W·m −1 ·K −1 ) was observed when water saturation decreased from 100% to~10%-20%. In addition, the electrical resistance increased quasi-linearly with decreasing water saturation. The geomechanical, hydraulic and thermal properties of the hydrate-free sediments reported herein can be used as the baseline when predicting properties and behavior of the sediments containing hydrates, and when the hydrates dissociate during gas production. The variations in thermal and hydraulic properties with changing water and gas saturation can be used to assess gas production rates from hydrate-bearing deposits. In addition, while depressurization of hydrate-bearing sediments inevitably causes deformation of sediments under drained conditions, the obtained strength and stiffness properties and stress-strain responses of the sedimentary formation under drained loading conditions can be effectively used to assess sediment responses to depressurization to ensure safe gas production operations in this potential target reservoir.

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“…Laboratory measurements of thermal properties of methane HBS have been made by a number of researchers (Gupta et al, 2006;Handa, 1986;Huang and Fan, 2005;Moridis et al, 2005;Rosenbaum et al, 2007;Turner et al, 2005;Waite et al, 2002;Waite et al, 2007) as reviewed by Waite et al, (2009). Two thermal properties are importantthermal conductivity and specific heat.…”

Section: Laboratory-synthesized Samplesmentioning

confidence: 99%

Challenges, Uncertainties, and Issues Facing Gas Production From Gas-Hydrate Deposits

Moridis

Collett

Pooladi‐Darvish

et al. 2011

SPE Reservoir Evaluation &Amp; Engineering

286

110

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Summary The current paper complements the Moridis et al. (2009) review of the status of the effort toward commercial gas production from hydrates. We aim to describe the concept of the gas-hydrate (GH) petroleum system; to discuss advances, requirements, and suggested practices in GH prospecting and GH deposit characterization; and to review the associated technical, economic, and environmental challenges and uncertainties, which include the following: accurate assessment of producible fractions of the GH resource; development of methods for identifying suitable production targets; sampling of hydrate-bearing sediments (HBS) and sample analysis; analysis and interpretation of geophysical surveys of GH reservoirs; well-testing methods; interpretation of well-testing results; geomechanical and reservoir/well stability concerns; well design, operation, and installation; field operations and extending production beyond sand-dominated GH reservoirs; monitoring production and geomechanical stability; laboratory investigations; fundamental knowledge of hydrate behavior; the economics of commercial gas production from hydrates; and associated environmental concerns.

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Measuring and modeling thermal conductivity of gas hydrate‐bearing sand

Cited by 64 publications

References 41 publications

Challenges, Uncertainties and Issues Facing Gas Production from Hydrate Deposits in Geologic Systems

Challenges, Uncertainties and Issues Facing Gas Production from Hydrate Deposits in Geologic Systems

Geomechanical, Hydraulic and Thermal Characteristics of Deep Oceanic Sandy Sediments Recovered during the Second Ulleung Basin Gas Hydrate Expedition

Challenges, Uncertainties, and Issues Facing Gas Production From Gas-Hydrate Deposits

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