Numerical simulation on gas production from a hydrate reservoir underlain by a free gas zone

Physical and mathematical models of gas production by depressurization from a hydrate reservoir underlain by a free gas zone are established. The mathematical model can interpret the effects of the flow of multiphase fluids, the process of hydrate dissociation, ice-water phase transition, the variat...

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Published inChinese science bulletin Vol. 54; no. 5; pp. 865 - 872
Main Authors Bai, YuHu, Li, QingPing, Li, XiangFang, Du, Yan
Format Journal Article
LanguageEnglish
Published Heidelberg SP Science in China Press 01.03.2009
Subjects
Articles/Energy Science & Technology
Chemistry/Food Science
Earth Sciences
Engineering
Humanities and Social Sciences
Life Sciences
multidisciplinary
Physics
Science
Science (multidisciplinary)
多相流体
数值模拟
数学模型
水合物气藏
游离气带
depressurization
hydrate reservoir
free gas zone
numerical simulation
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Abstract Physical and mathematical models of gas production by depressurization from a hydrate reservoir underlain by a free gas zone are established. The mathematical model can interpret the effects of the flow of multiphase fluids, the process of hydrate dissociation, ice-water phase transition, the variation of permeability, the convection and conduction on hydrate dissociation and gas and water production. The evolutions of temperature, pressure, and saturations in the hydrate and free gas zones are elucidated during gas production. The variation of some parameters, such as gas and water rates, with time is presented. The results show that the overlying hydrate zone can supply a certain amount of gas to improve the output of a production well and evidently prolong the lifespan of a gas reservoir.
AbstractList Physical and mathematical models of gas production by depressurization from a hydrate reservoir underlain by a free gas zone are established. The mathematical model can interpret the effects of the flow of multiphase fluids, the process of hydrate dissociation, ice-water phase transition, the variation of permeability, the convection and conduction on hydrate dissociation and gas and water production. The evolutions of temperature, pressure, and saturations in the hydrate and free gas zones are elucidated during gas production. The variation of some parameters, such as gas and water rates, with time is presented. The results show that the overlying hydrate zone can supply a certain amount of gas to improve the output of a production well and evidently prolong the lifespan of a gas reservoir.
Author BAI YuHu LI QingPing LI XiangFang DU Yan
AuthorAffiliation Technology Research Department, China National Offshore Oil Corporation, Research Center, Beijing 100027, China Faculty of Petroleum Engineering, China University of Petroleum, Beijing 102249, China Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
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  organization: Faculty of Petroleum Engineering, China University of Petroleum
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  fullname: Du, Yan
  organization: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences
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Cites_doi 10.1016/0009-2509(87)80169-0
10.1016/j.ces.2005.12.017
10.1016/j.profnurs.2003.09.004
10.1021/ef0601869
10.1016/S0196-8904(03)00010-4
10.1002/aic.690470206
10.1144/GSL.SP.1998.137.01.02
10.1016/S0920-4105(01)00094-8
10.2118/18320-PA
10.2118/75691-MS
10.2523/11105-MS
10.2118/15246-MS
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Issue 5
Keywords depressurization
hydrate reservoir
free gas zone
numerical simulation
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free gas zone, hydrate reservoir, numerical simulation, depressurization
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Snippet Physical and mathematical models of gas production by depressurization from a hydrate reservoir underlain by a free gas zone are established. The mathematical...
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SubjectTerms Articles/Energy Science & Technology
Chemistry/Food Science
Earth Sciences
Engineering
Humanities and Social Sciences
Life Sciences
multidisciplinary
Physics
Science
Science (multidisciplinary)
多相流体
数值模拟
数学模型
水合物气藏
游离气带
Title Numerical simulation on gas production from a hydrate reservoir underlain by a free gas zone
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