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 in | Chinese science bulletin Vol. 54; no. 5; pp. 865 - 872 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
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Heidelberg
SP Science in China Press
01.03.2009
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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. |
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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 |
Author_xml | – sequence: 1 givenname: YuHu surname: Bai fullname: Bai, YuHu email: byh_2002@163.com organization: Technology Research Department, China National Offshore Oil Corporation, Research Center – sequence: 2 givenname: QingPing surname: Li fullname: Li, QingPing organization: Technology Research Department, China National Offshore Oil Corporation, Research Center – sequence: 3 givenname: XiangFang surname: Li fullname: Li, XiangFang organization: Faculty of Petroleum Engineering, China University of Petroleum – sequence: 4 givenname: Yan surname: Du 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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Keywords | depressurization hydrate reservoir free gas zone numerical simulation |
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Notes | 11-1785/N free gas zone, hydrate reservoir, numerical simulation, depressurization TE155 |
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Title | Numerical simulation on gas production from a hydrate reservoir underlain by a free gas zone |
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