ConocoPhillips Gas Hydrate Production Test

Schoderbek, David; Farrell, Helen E.; Howard, James W.; Raterman, Kevin T.; Silpngarmlert, S.; Martin, Kenneth Lloyd; Smith, Bruce L.; Klein, Perry D.

doi:10.2172/1123878

Cited by 130 publications

(153 citation statements)

References 3 publications

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“…Among the methods mentioned above, the depressurization method is the most economical and effective one (Lee et al, 2011;Konno et al, 2016). As a consequence, the depressurization method has been adopted in field productions of NGHs in the Messoyakha gas field (Krason, 2000), the North Slope of Alaska (Schoderbek et al, 2013), the Nankai Trough in Japan Sea (Cyranoski, 2013;Yamamoto et al, 2014), and the Shenhu Area in South China Sea. Solid NGHs are decomposed into liquid water and natural gas during depressurization.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulations for analyzing deformation characteristics of hydrate-bearing sediments during depressurization

Liu

Zhang

et al. 2017

Adv. Geo-Energ. Res.

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Natural gas hydrates have been treated as a potential energy resource for decades. Understanding geomechanical properties of hydrate-bearing porous media is an essential to protect the safety of individuals and devices during hydrate production. In this work, a numerical simulator named GrapeFloater is developed to study the deformation behavior of hydrate-bearing porous media during depressurization, and the numerical simulator couples multiple processes such as conductive-convective heat transfer, two-phase fluid flow, intrinsic kinetics of hydrate dissociation, and deformation of solid skeleton. Then, a depressurization experiment is carried out to validate the numerical simulator. A parameter sensitivity analysis is performed to discuss the deformation behavior of hydrate-bearing porous media as well as its effect on production responses. Conclusions are drawn as follows: the numerical simulator named GrapeFloater predicts the experimental results well; the modulus of hydrate-bearing porous media has an obvious effect on production responses; final deformation increases with decreasing outlet pressure; both the depressurization and the modulus decrease during hydrate dissociation contribute to the deformation of hydrate-bearing porous media.

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Section: Introductionmentioning

confidence: 99%

Numerical simulations for analyzing deformation characteristics of hydrate-bearing sediments during depressurization

Liu

Zhang

et al. 2017

Adv. Geo-Energ. Res.

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“…The researchers attempted to pump CO 2 gas down wells and into hydrate deposits. The idea was to exchange the methane molecules inside the hydrates with CO 2 molecules leaving the water crystals intact and freeing the methane to flow up the well [40]. Continuous efforts are being made to improve the economics and efficiency of hydrate based gas capture.…”

Section: Introductionmentioning

confidence: 99%

Effect of different fixed bed media on the performance of sodium dodecyl sulfate for hydrate based CO 2 capture

et al. 2016

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“…19 There are several shortcomings in the single wellbore scheme employing both thermal stimulation and depressurization. A single wellbore scheme has to overcome forced convection and cooling caused by the fluid flowing back to the wellbore.…”

Section: −33 Ignikmentioning

confidence: 99%

Gas Production from Methane Hydrates in a Dual Wellbore System

et al. 2014

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In a previous study using a single wellbore production system, it was demonstrated that a combination of depressurization and wellbore heating is more efficient than depressurization alone, where the endothermic dissociation process rapidly consumes the specific heat of the formation, leading to a sharp decrease in the dissociation rate. This study extends the work on gas production and explores the feasibility of a novel dual wellbore production scheme, where heating and depressurization are conducted on separate wellbores. The drawback with combining heating and depressurization on a single wellbore is that the produced fluids are flowing in an opposite direction to the heat from the wellbore, and this forced convection may slow the dissociation process. Gas production tests are carried out using the dual wellbore system with different combinations of pressure and temperature at the depressurization and heating wellbores, respectively. The ensuing experimental results showed that both increased depressurization and heating can lead to optimized gas production. A production scheme with a higher depressurization compared to a lower depressurization at the same wellbore heating is generally more energy-efficient, while a higher wellbore temperature at the same depressurization resulted in more gas produced but no improvement in efficiency. Although a dual wellbore scheme has been an established practice in the petroleum industry, this is likely to be the first employed in the hydrate gas production tests.

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ConocoPhillips Gas Hydrate Production Test

Cited by 130 publications

References 3 publications

Numerical simulations for analyzing deformation characteristics of hydrate-bearing sediments during depressurization

Numerical simulations for analyzing deformation characteristics of hydrate-bearing sediments during depressurization

Effect of different fixed bed media on the performance of sodium dodecyl sulfate for hydrate based CO 2 capture

Gas Production from Methane Hydrates in a Dual Wellbore System

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