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公开(公告)号：US20180154304A1
公开(公告)日：2018-06-07
申请号：US15576450
申请日：2015-06-05
Applicant: STATOIL PETROLEUM AS
Inventor： Eivind JOHANNESSEN , Knut Arid MARÅK , Gry Pedersen KOJEN , Arne Olav FREDHEIM
Abstract: A method of dehydrating a hydrocarbon gas stream including stripping water from a liquid desiccant stream using a water-undersaturated portion of the gas stream, drying the gas stream to extract the stripped water, and then further drying the partially-dried gas stream using the stripped desiccant to achieve a low water content level in the gas stream for pipeline transportation. In one embodiment, the liquid desiccant is supplied by a regeneration facility at a remote location and the liquid desiccant is returned to the regeneration facility for regeneration after drying the gas. In another embodiment, the regeneration of the desiccant is performed locally whereby the liquid desiccant is, after drying the gas, stripped again of water and reused locally.
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公开(公告)号：US20200182035A1
公开(公告)日：2020-06-11
申请号：US16791590
申请日：2020-02-14
Applicant: STATOIL PETROLEUM AS
Inventor： Arne Olav FREDHEIM , Bjørgulf Haukelidsæter EIDESEN , Idar Olav GRYTDAL , Ola RAVNDAL
Abstract: A method of processing a fluid produced from a well, the produced fluid being a high pressure fluid, the method comprising: reducing the pressure of the fluid to a reduced pressure such that a gas phase and a liquid phase are formed; separating the gas phase from the liquid phase thus forming a gas product and a liquid product; and storing the liquid product in a storage tank at a pressure such that the liquid product remains in a stable liquid phase during storage, wherein the reduced pressure is greater than atmospheric pressure.
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公开(公告)号：US20180266229A1
公开(公告)日：2018-09-20
申请号：US15760430
申请日：2016-09-15
Applicant: STATOIL PETROLEUM AS
Inventor： Arne Olav FREDHEIM , Bjørgulf Haukelidsæter EIDESEN , Idar Olav GRYTDAL , Ola RAVNDAL
Abstract: A method of processing a fluid produced from a well, the produced fluid being a high pressure fluid, the method comprising: reducing the pressure of the fluid to a reduced pressure such that a gas phase and a liquid phase are formed; separating the gas phase from the liquid phase thus forming a gas product and a liquid product; and storing the liquid product in a storage tank at a pressure such that the liquid product remains in a stable liquid phase during storage, wherein the reduced pressure is greater than atmospheric pressure.
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4.发明申请公开(公告)号：US20180200669A1
公开(公告)日：2018-07-19
申请号：US15923617
申请日：2018-03-16
Applicant: STATOIL PETROLEUM AS
Inventor： Baard KAASA , Bernt Henning RUSTEN , Knut Arild MARAK , Arne Olav FREDHEIM
CPC classification number: B01D53/265 , B01D2256/245 , C10L3/106 , C10L3/107
Abstract: The present invention concerns a method for lowering the water dew point subsea in a produced multiphase hydrocarbon fluid stream containing water, the method comprising the steps of: separating (10) the hydrocarbon fluid stream (1) into a liquid phase (3) and a first gas phase (2); cooling (20) the first gas phase in a controlled mariner to knock out water or condensing water and optionally other condensates while keeping the fluid above a hydrate formation temperature thereof; separating off condensed liquids (6) and a second gas phase; wherein the second gas phase (8) has a water dew point which is lower than that of the initial multiphase hydrocarbon fluid stream. The invention also concerns a system for lowering the water dew point subsea.
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