Analysis of formation pressure test results in the Mount Elbert methane hydrate reservoir through numerical simulation

Kurihara, Masanori; Sato, Akihiko; Funatsu, Kunihiro; Ouchi, Hisanao; Masuda, Yoshihiro; Narita, Hideo; Collett, Timothy S.

doi:10.1016/j.marpetgeo.2010.01.007

Cited by 53 publications

(42 citation statements)

References 10 publications

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“…In comparison to the Mallik 2002 MDT tests, the individual Mount Elbert tests were of longer duration, with the tests ranging from 6 to nearly 13 h to further enhance data interpretability. Acquisition of this open-hole, dual-packer MDT data confirm earlier results obtained at Mallik (Dallimore and Collett, 2005;Hancock et al, 2004) and indicate ability to technically recover gas from gas hydrates through depressurization (Pooladi- Darvish and Hong, 2011;Anderson et al, 2011a;Kurihara et al, 2011). As shown in Fig.…”

Section: Formation Pressure Testing Program Resultssupporting

confidence: 86%

Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Overview of scientific and technical program

Hunter

Collett

Boswell

et al. 2011

Marine and Petroleum Geology

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Section: Formation Pressure Testing Program Resultssupporting

confidence: 86%

Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Overview of scientific and technical program

Hunter

Collett

Boswell

et al. 2011

Marine and Petroleum Geology

Self Cite

188

104

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“…1-3 show the pressure, production, and temperature comparisons, respectively, between the actual and model results. Kurihara (2011) present other matches. The following observations can be made: 1.…”

Section: Match Of the Second And Third Shut-in Periodsmentioning

confidence: 81%

“…Kurihara et al (2011) presents a history match of the results. This paper is complementary to the above, by assessing the degree of uncertainty associated with the history match, and its implications for the long-term predictions.…”

Section: Mdt Testmentioning

confidence: 99%

“…However, the measured values carry a large degree of uncertainty. Field operation suggests that there was significant gas accumulation inside the wellbore (Kurihara et al, 2011). This was simulated by accounting for the void space between the tool and the inside of the wellbore (see Appendix B for more details of discretization inside the wellbore).…”

Section: Match Of the Second And Third Shut-in Periodsmentioning

confidence: 99%

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Use of formation pressure test results over a hydrate interval for long-term production forecasting at the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Implications of uncertainties

Pooladi‐Darvish

Hong

2011

Marine and Petroleum Geology

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“…The measured residual water saturation after depressurization for this specimen is S rw ¼ 0.16. Relative permeability k rw dependence on S w during repressurization can be estimated (solid curve) with the Brooks and Corey (1964) model, where the best fit curve is nearly identical to the prediction using the parameters from Kurihara et al (2011). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)…”

Section: Water Permeabilitymentioning

confidence: 87%

Hydro-bio-geomechanical properties of hydrate-bearing sediments from Nankai Trough

Santamarina

Dai

Terzariol

et al. 2015

Marine and Petroleum Geology

209

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a b s t r a c tNatural hydrate-bearing sediments from the Nankai Trough, offshore Japan, were studied using the Pressure Core Characterization Tools (PCCTs) to obtain geomechanical, hydrological, electrical, and biological properties under in situ pressure, temperature, and restored effective stress conditions. Measurement results, combined with index-property data and analytical physics-based models, provide unique insight into hydrate-bearing sediments in situ. Tested cores contain some silty-sands, but are predominantly sandy-and clayey-silts. Hydrate saturations S h range from 0.15 to 0.74, with significant concentrations in the silty-sands. Wave velocity and flexible-wall permeameter measurements on neverdepressurized pressure-core sediments suggest hydrates in the coarser-grained zones, the silty-sands where S h exceeds 0.4, contribute to soil-skeletal stability and are load-bearing. In the sandy-and clayey-silts, where S h < 0.4, the state of effective stress and stress history are significant factors determining sediment stiffness. Controlled depressurization tests show that hydrate dissociation occurs too quickly to maintain thermodynamic equilibrium, and pressureetemperature conditions track the hydrate stability boundary in pure-water, rather than that in seawater, in spite of both the in situ pore water and the water used to maintain specimen pore pressure prior to dissociation being saline. Hydrate dissociation accompanied with fines migration caused up to 2.4% vertical strain contraction. The firstever direct shear measurements on never-depressurized pressure-core specimens show hydratebearing sediments have higher sediment strength and peak friction angle than post-dissociation sediments, but the residual friction angle remains the same in both cases. Permeability measurements made before and after hydrate dissociation demonstrate that water permeability increases after dissociation, but the gain is limited by the transition from hydrate saturation before dissociation to gas saturation after dissociation. In a proof-of-concept study, sediment microbial communities were successfully extracted and stored under high-pressure, anoxic conditions. Depressurized samples of these extractions were incubated in air, where microbes exhibited temperature-dependent growth rates.Published by Elsevier Ltd.

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Analysis of formation pressure test results in the Mount Elbert methane hydrate reservoir through numerical simulation

Cited by 53 publications

References 10 publications

Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Overview of scientific and technical program

Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Overview of scientific and technical program

Use of formation pressure test results over a hydrate interval for long-term production forecasting at the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Implications of uncertainties

Hydro-bio-geomechanical properties of hydrate-bearing sediments from Nankai Trough

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