Method and system for offshore production of liquefied natural gas
    3.
    发明授权
    Method and system for offshore production of liquefied natural gas 失效
    液化天然气近海生产方法和系统

    公开(公告)号:US6003603A

    公开(公告)日:1999-12-21

    申请号:US849346

    申请日:1997-08-11

    摘要: A method and a system for offshore production of liquefied natural gas, wherein natural gas is supplied from an underground source to a field installation for gas treatment. The gas is transferred in compressed form from the field installation to an LNG tanker. The transfer takes place via a pipeline surrounded by sea water. The compressed gas is supplied to a conversion plant which is provided on the LNG tanker and is arranged to convert at least a part of the gas to liquefied form, and the liquified gas is transferred to storage tanks on board the tanker. When the storage tanks on the LNG tanker are filled up, the pipeline is disconnected from the LNG tanker and connected to another, similar tanker. The pipeline is permanently connected to a submerged buoy which is arranged for introduction and releasable securement in a submerged downwardly open receiving space in the tanker, and which is provided with a swivel unit for transfer of gas under a high pressure.

    摘要翻译: PCT No.PCT / NO95 / 00227 Sec。 371日期1997年8月11日 102(e)日期1997年8月11日PCT提交1995年12月8日PCT公布。 公开号WO96 / 17777 日期1996年6月13日一种用于离岸生产液化天然气的方法和系统,其中将天然气从地下源供应到用于气体处理的现场设备。 气体以压缩形式从现场安装转移到LNG罐车。 转运通过海水围拢的管道进行。 将压缩气体供给到设置在LNG罐车上的转炉装置,并且将至少一部分气体转化为液化形式,将液化气体转移到油罐车上的储罐中。 当液化天然气罐车上的储罐被填满时,管道与LNG罐车断开连接,并连接到另一个类似的油罐车。 该管道永久地连接到浸没式浮标,其被设置成用于在油罐车中的浸没的向下开放的接收空间中引入和释放固定,并且设置有用于在高压下传送气体的旋转单元。

    Process, plant and overall system for handling and treating a
hydrocarbon gas from a petroleum deposit
    4.
    发明授权
    Process, plant and overall system for handling and treating a hydrocarbon gas from a petroleum deposit 有权
    从石油矿床处理和处理烃类气体的工艺,设备和整体系统

    公开(公告)号:US6094937A

    公开(公告)日:2000-08-01

    申请号:US214363

    申请日:1999-05-05

    IPC分类号: B63B35/44 F25J1/02 F25J1/00

    摘要: A method of liquefaction/conditioning of a compressed gas/condensate flow extracted from a petroleum deposit, for transport in liquefied form with a transport vessel, especially for such processing of a compressed gas/condensate flow which has been separated from a crude oil extracted from an offshore oil field. The gas/condensate flow is depressurized and cooled in several steps for producing a stabilized liquefied natural gas (LNG) and a stabilized liquefied petroleum gas (LPG), for transport thereof in separate tanks. Disclosed is also a gas expansion plant for execution of the method, and a system for handling and processing of a natural gas from an offshore petroleum field, comprising a production ship to which there is supplied a well stream from an underground source, a field plant installed on the production ship, for processing of the well stream received on the production ship, a vessel for transport of liquefied gas fractions, a high-pressure pipeline arranged for transfer of compressed gas from the field plant to the vessel, and a gas expansion plant according to the invention installed on the transport vessel.

    摘要翻译: PCT No.PCT / NO97 / 00165 Sec。 371日期1999年5月5日 102(e)日期1999年5月5日PCT提交1997年6月26日PCT公布。 第WO98 / 01335号公报 日期1998年1月15日一种液化/调节从石油沉积物中提取的压缩气体/冷凝物流的方法,用于运输液体形式的运输容器,特别是用于处理已经分离出的压缩气体/冷凝物流 从海上油田提取的原油。 气体/冷凝物流被减压并在几个步骤中冷却以产生稳定的液化天然气(LNG)和稳定的液化石油气(LPG),用于在单独的罐中运输。 还公开了一种用于执行该方法的气体膨胀装置,以及用于处理和处理来自海上石油领域的天然气的系统,包括生产船,其中从井源提供井流,田间工厂 安装在生产船上,用于处理在生产船上接收的井流,用于运输液化气部分的船舶,设置用于将压缩气体从现场设备转移到船舶的高压管道,以及气体膨胀 根据本发明的装置安装在运输船上。

    Method for liquefying a flow rich in hydrocarbons
    6.
    发明申请
    Method for liquefying a flow rich in hydrocarbons 审中-公开
    液化富含烃类的方法

    公开(公告)号:US20050210915A1

    公开(公告)日:2005-09-29

    申请号:US10504525

    申请日:2003-02-14

    IPC分类号: F25J1/02 F25J1/00

    摘要: A process is described for liquefaction of a hydrocarbon-rich stream, especially a natural gas stream, at least indirect heat exchange taking place between the hydrocarbon-rich stream to be liquefied and the refrigerant mixture of at least one refrigerant mixture circuit, and the refrigerant mixture being separated after completed supercooling into a gaseous fraction and a liquid fraction and these fractions being recombined before and/or during the reheating of the refrigerant mixture. According to the invention, a gas fraction (9) that is identical or similar in composition is added at least from time to time to the gas fraction (4) that has been obtained in the separation (D). In doing so, the addition of the gas fraction (9) that is identical or similar in composition takes place when a minimum amount of the gas fraction (4) obtained in the separation (D) of the refrigerant mixture is not reached.

    摘要翻译: 描述了用于液化富烃流,特别是天然气流的方法,至少在要液化的富烃流与至少一个制冷剂混合物回路的制冷剂混合物之间发生间接热交换,并且制冷剂 混合物在完全过冷后分离成气态馏分和液体馏分,这些馏分在制冷剂混合物再加热之前和/或期间重组。 根据本发明,至少在分离(D)中获得的气体馏分(4)中至少添加了组成相同或相似的气体馏分(9)。 在这样做时,当达到制冷剂混合物的分离(D)中获得的最小量的气体馏分(4)时,组成中相同或相似的气体馏分(9)的添加发生。

    Cooling water system
    8.
    发明授权
    Cooling water system 有权
    冷却水系统

    公开(公告)号:US06845727B2

    公开(公告)日:2005-01-25

    申请号:US10168510

    申请日:2000-12-22

    摘要: A system for supplying cooling water to a process on board a floating vessel for the production of hydrocarbons, wherein the vessel (1) is anchored by means of a bottom-anchored turning unit (20) mounted in a receiving space (7) in the hull (34) of the vessel and allowing turning of the vessel (1) about the turning unit, and wherein the turning unit (20) supports a swivel unit (24) for the transfer of hydrocarbons from production risers (28) extending between the seabed and the turning unit (20), the system comprising a conduit means (30) depending from the vessel (1) to a depth for taking in cooled sea water, and a pump means (44) for pumping of the sea water from the conduit to a place of use for the process. The turning unit (20) is designed as a seawater swivel, the unit being provided with one or more passages (29) for receiving upper end portions of respective seawater risers (30) constituting the conduit means, and with a means for transferring sea water from the upper end portions of the risers (30) to an annulus (31) arranged at the boundary surface between mutually movable parts (21, 22) of the turning unit (20) or between the tuning unit (20) and the vessel hull (34), and communicating with one or more passages (41) arranged in the vessel hull and leading to said place of use, a seawater sealing means (37, 39) being arranged on each side of the annulus (31).

    摘要翻译: 一种用于向用于生产碳氢化合物的浮动容器上的工艺提供冷却水的系统,其中所述容器(1)借助于安装在所述容器(1)内的容纳空间(7)中的底部固定的转动单元(20)锚定, 并且允许容器(1)围绕转动单元转动,并且其中转动单元(20)支撑用于从生产提升管(28)传送碳氢化合物的旋转单元(24) 海底和转向单元(20),该系统包括从容器(1)到达用于吸入冷却的海水的深度的导管装置(30)和用于从海水泵送海水的泵装置(44) 导管到该过程的使用场所。 转向单元(20)设计为海水旋转,该单元设置有一个或多个通道(29),用于接收构成导管装置的各个海水立管(30)的上端部分,并具有用于输送海水的装置 从所述提升管(30)的上端部到布置在所述转向单元(20)的相互可动部分(21,22)之间或所述调谐单元(20)与所述容器壳体之间的边界面处的环形空间(31) (34),并且与设置在容器壳体中并通向所述使用场所的一个或多个通道(41)连通,设置在环空(31)的每一侧上的海水密封装置(37,39)。

    Method and system for offshore production of liquefied natural gas
    9.
    发明授权
    Method and system for offshore production of liquefied natural gas 失效
    液化天然气近海生产方法和系统

    公开(公告)号:US5878814A

    公开(公告)日:1999-03-09

    申请号:US849349

    申请日:1997-08-20

    摘要: A method and a system for offshore production of liquefied natural gas, wherein natural gas is supplied from an underground source (4) to a subsea production plant (1). The gas is transferred under a high pressure directly from the production plant (1) to an LNG tanker (6), the transfer taking place through a pipeline (5) surrounded by sea water and causing the temperature of the high pressure gas to be lowered to a desired low temperature. This gas is supplied to a conversion plant (12) provided on the LNG tanker (16) and arranged for converting at least a part of the gas to liquid form, and the liquefied gas is transferred to storage tanks (17) on board the vessel (6). When the storage tanks (17) on the LNG tanker (6) are filled up, the pipeline is disconnected from the LNG tanker and connected to another similar tanker, the pipeline being permanently connected to a submerged buoy (8) which is arranged for introduction and releasable securement in a submerged downwardly open receiving space (11) in the tanker (6), and which is provided with a swivel unit for transfer of gas under a high pressure.

    摘要翻译: PCT No.PCT / NO95 / 00228 Sec。 371日期1997年8月20日 102(e)日期1997年8月20日PCT 1995年12月8日PCT PCT。 WO96 / 17766 PCT公开号 日期1996年6月13日一种用于离岸生产液化天然气的方法和系统,其中天然气从地下源(4)供应到海底生产厂(1)。 气体在高压下直接从生产设备(1)转移到LNG罐车(6),通过由海水包围的管道(5)进行转运,并使高压气体的温度降低 达到所需的低温。 该气体被供应到设置在LNG罐车(16)上的转炉设备(12),并被设置成将至少一部分气体转化为液态,并将液化气体转移到船上的储罐(17) (6)。 当液化天然气罐车(6)上的储罐(17)被填满时,管道与LNG罐车断开连接并连接到另一个类似的油罐车,该管道永久地连接到一个被设置用于引入的淹没浮标(8) 并且在油罐(6)中的浸没的向下开放的容纳空间(11)中可释放地固定,并且设有用于在高压下传送气体的旋转单元。

    Method for liquefying a hydrocarbon-rich flow while simultaneously obtaining a c3/c4-rich fraction
    10.
    发明申请
    Method for liquefying a hydrocarbon-rich flow while simultaneously obtaining a c3/c4-rich fraction 审中-公开
    液化富烃流体同时获得富含c 3 / c 4的馏分的方法

    公开(公告)号:US20060005573A1

    公开(公告)日:2006-01-12

    申请号:US10521944

    申请日:2003-07-01

    IPC分类号: F25J3/00

    摘要: A process for liquefying a flow of natural gas with simultaneous recovery of a C3/C4-rich fraction is described, whereby the liquefaction of the flow of natural gas is carried out in heat exchange for at least one refrigerant and/or mixed refrigerant flow, and the flow of natural gas that is to be liquefied, after precooling, is subjected to a rectifying column, in which higher hydrocarbons are separated from the flow of natural gas, and then is subjected to further cooling and liquefaction, whereby a C2+-rich fraction that is recovered in the subsequent cooling of the flow of natural gas is fed to the rectifying column as a reflux liquid. According to the invention, a C4/C5-rich fraction (20, 35) is fed directly and/or indirectly to rectifying column (T1) as an additional reflux liquid, whereby the feed point of the C4/C5-rich [fraction (20, 35) is located at the top of rectifying column (T1) or is identical to the feed point of the C2+-rich fraction (5).]

    摘要翻译: 描述了同时回收C 3 / C 4 - 富余馏分液化天然气流的方法,由此携带天然气流的液化 在对至少一种制冷剂和/或混合制冷剂流进行热交换时,在预冷却之后将要液化的天然气流经过精馏塔,其中高级烃与天然气流分离 ,然后进一步冷却和液化,由此在随后冷却天然气流中回收的富含C 2+的馏分作为回流液体供给至精馏塔。 根据本发明,富C 3(C 5 C 5)富馏馏分(20,35)直接和/或间接地供给精馏塔(T 1),作为附加的 回流液体,其中富含C 4 H 5馏分(20,35)的进料点位于精馏塔(T 1)的顶部或 与C 2 +富含部分(5)的进料点相同。]