Gas solubility measurement and modeling for methane–water and methane–ethane–n-butane–water systems at low temperature conditions

Chapoy, Antonin; Mohammadi, Amir H.; Richon, Dominique; Tohidi, Bahman

doi:10.1016/j.fluid.2004.02.010

Cited by 184 publications

(129 citation statements)

References 26 publications

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“…By minimizing the average absolute deviations in the solubility of methane in water in the range of 273.15 K up to 393.15 K (using the data from Chapoy et al, 2004;Culberson and Mc Ketta, 1951), a quadratic temperature dependent k ij has been established. exp.…”

Section: Resultsmentioning

confidence: 99%

Methane and Water Phase Equilibria in the Presence of Single and Mixed Electrolyte Solutions Using the Cubic-Plus-Association Equation of State

Haghighi

Chapoy

Tohidi

2008

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Application de l'équation d'état Cubic-Plus-Association pour la prédiction des équilibres entre phases pour les systèmes contenant du méthane et de l'eau en présence d'électrolyte(s) -Les hydrates de méthane ont été largement présentés comme une potentielle nouvelle source d'énergie. Les hydrates à l'état naturel peuvent se former dans diverses roches ou sédiments si les conditions appropriées de pression et température en présence d'eau et de méthane sont réunies. Toutefois, la salinité des eaux de formation peut connaître d'importantes variations, et ces changements modifient la zone de stabilité des hydrates. En outre, l'eau de gisement produite avec les fluides de réservoir peut contenir diverses quantités de sels, pouvant prévenir la formation d'hydrates. Par conséquent, il est essentiel d'obtenir une meilleure compréhension de l'effet des sels sur la stabilité des hydrates. Dans cette communication, de nouvelles données expérimentales de dissociation d'hydrates de méthane en présence de solutions aqueuses contenant différentes concentrations de NaCl, KCl et de MgCl 2 ont été réalisées. Les nouvelles données ont été mesurées en utilisant une méthode à volume constant. La précision et la fiabilité des mesures expérimentales ont été démontrées en comparant les mesures avec les données de la littérature. Une approche thermodynamique dans lequel l'équation d'état CPA est combinée avec une modification du terme électrostatique proposé par Debye-Hückel a été employée pour modéliser les équilibres entre phases. Les conditions de formation d'hydrates sont modélisées par la théorie développée par van der Waals et Platteeuw. Pour modéliser en milieux poreux les équilibres entre phases d'hydrate, l'effet de la pression capillaire a été pris en compte. Les prédictions du modèle développé ont été validées par rapport à des données expérimentales indépendantes et les données obtenues dans ce travail. Un bon accord entre les prédictions et les données expérimentales a été observé, confirmant la fiabilité du modèle développé. Abstract -Methane and Water Phase Equilibria in the Presence of Single and Mixed Electrolyte

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Section: Resultsmentioning

confidence: 99%

Methane and Water Phase Equilibria in the Presence of Single and Mixed Electrolyte Solutions Using the Cubic-Plus-Association Equation of State

Haghighi

Chapoy

Tohidi

2008

Oil & Gas Science and Technology - Rev. IFP

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“…At a depth of 15-20 km, the pressure typically varies between 18 and 25 MPa. At such pressures, the solubility of methane in pure liquid water would range between 0.35 and 0.4 wt% at 273.15 K (Chapoy et al 2004;Duan & Mao 2006). As a consequence, if the methane fraction exceeds this solubility value, the ocean gets saturated and the exceeding methane forms bubbles of free methane that can percolate upward through the solid icy crust.…”

Section: Volatile Elements In the H 2 O Mantle And Their Extraction Mmentioning

confidence: 99%

TITAN'S BULK COMPOSITION CONSTRAINED BYCASSINI-HUYGENS: IMPLICATION FOR INTERNAL OUTGASSING

Tobie

Gautier

Hersant

2012

ApJ

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In the present report, by using a series of data gathered by the Cassini-Huygens mission, we constrain the bulk content of Titan's interior for various gas species (CH 4 , CO 2 , CO, NH 3 , H 2 S, Ar, Ne, Xe), and we show that most of the gas compounds (except H 2 S and Xe) initially incorporated within Titan are likely stored dissolved in the subsurface water ocean. CO 2 is likely to be the most abundant gas species (up to 3% of Titan's total mass), while ammonia should not exceed 1.5 wt%. We predict that only a moderate fraction of CH 4 , CO 2 , and CO should be incorporated in the crust in the form of clathrate hydrates. By contrast, most of the H 2 S and Xe should be incorporated at the base of the subsurface ocean, in the form of heavy clathrate hydrates within the high-pressure ice layer. Moreover, we show that the rocky phase of Titan, assuming a composition similar to CI carbonaceous chondrites, is a likely source for the noble gas isotopes ( 40 Ar, 36 Ar, 22 Ne) that have been detected in the atmosphere. A chondritic core may also potentially contribute to the methane inventory. Our calculations show that a moderate outgassing of methane containing traces of neon and argon from the subsurface ocean would be sufficient to explain the abundance estimated by the Gas Chromatograph Mass Spectrometer. The extraction process, implying partial clathration in the ice layers and exsolvation from the water ocean, may explain why the 22 Ne/ 36 Ar ratio in Titan's atmosphere appears higher than the ratio in carbonaceous chondrites.

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“…Typically, a volume of gas hydrate, in its characteristic pressure-temperature stability region can hold $160 volumes of gas at STP, thus, gas storage, especially of energy gases such as methane and hydrogen, continues to be actively pursued [16]. Since hydrate cages of each type have a preference for guests based on their dimensions, the separation of gas mixtures according to molecular size is also an active area of research, for instance, for separating CO 2 from nitrogen in flue gas or CO 2 from H 2 in fuel gas [17].…”

Section: Introductionmentioning

confidence: 99%

Some current challenges in clathrate hydrate science: Nucleation, decomposition and the memory effect

Ripmeester

Alavi

2016

Current Opinion in Solid State and Materials Science

118

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Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/eng/view/object/?id=dbb87be9-a830-40b5-966c-3a5334a8fe14 http://nparc.cisti-icist.nrc-cnrc.gc.ca/fra/voir/objet/?id=dbb87be9-a830-40b5-966c-3a5334a8fe14 Among outstanding issues still to be understood regarding the clathrate hydrates are the mechanism of the processes involved in the formation and decomposition of clathrates: nucleation, decomposition, and the memory effect during reformation. The latter involves the shorter induction times required for solutions of decomposed hydrate to nucleate as compared to those for freshly prepared solutions. The formation of the clathrate hydrate phases of insoluble gases in water is accompanied by a $6000 fold concentration of the gas content in the solid phase compared to the aqueous phase from which it forms. The nucleation mechanism for the solid hydrate which allows the delivery of such high concentration of gas and water in one location has been the subject of much experimental and computational study. While these studies have improved our understanding of the nucleation process, many unknown aspects remain. These developments are described in this Opinion.

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Gas solubility measurement and modeling for methane–water and methane–ethane–n-butane–water systems at low temperature conditions

Cited by 184 publications

References 26 publications

Methane and Water Phase Equilibria in the Presence of Single and Mixed Electrolyte Solutions Using the Cubic-Plus-Association Equation of State

Methane and Water Phase Equilibria in the Presence of Single and Mixed Electrolyte Solutions Using the Cubic-Plus-Association Equation of State

TITAN'S BULK COMPOSITION CONSTRAINED BYCASSINI-HUYGENS: IMPLICATION FOR INTERNAL OUTGASSING

Some current challenges in clathrate hydrate science: Nucleation, decomposition and the memory effect

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