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公开(公告)号：US08430169B2
公开(公告)日：2013-04-30
申请号：US12670994
申请日：2008-08-21
IPC分类号： E21B43/01
CPC分类号： E21B37/06 , E21B43/01 , Y10T137/0352
摘要： A method for managing hydrates in a subsea production system is provided. The production system includes a host production facility, a control umbilical, at least one subsea production well, and a single production line. The method generally comprises producing hydrocarbon fluids from the at least one subsea production well and through the production line, and then shutting in the production line. In addition, the method includes the steps of depressurizing the production line to substantially reduce a solution gas concentration in the produced hydrocarbon fluids, and then repressurizing the production line to urge any remaining gas in the free gas phase within the production line back into solution. The method also includes displacing production fluids within the production line by moving displacement fluids from a service line within the umbilical line and into the production line. The displacement fluids preferably comprise a hydrocarbon-based fluid having a low dosage hydrate inhibitor (LDHI).
摘要翻译： 提供了一种在海底生产系统中管理水合物的方法。 生产系统包括主机生产设备，控制脐带，至少一个海底生产井和单一生产线。 该方法通常包括从至少一个海底生产井和生产线生产烃流体，然后在生产线上关闭。 此外，该方法包括对生产线进行减压以显着降低生产的烃流体中的溶解气体浓度的步骤，然后将生产线再加压以将生产线内的游离气相中的剩余气体推回溶液中。 该方法还包括通过将位移流体从脐带内的服务线移动到生产线中来移动生产线内的生产流体。 置换液优选包含具有低剂量水合物抑制剂（LDHI）的基于烃的流体。
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公开(公告)号：US07721807B2
公开(公告)日：2010-05-25
申请号：US11660777
申请日：2005-08-11
IPC分类号： E21B43/01
CPC分类号： E21B43/017
摘要： A method for managing hydrates in a subsea production system is provided. The system has at least one producing subsea well, a jumper for delivering produced fluids from the subsea well to a manifold, a production line for delivering produced fluids to a production gathering facility, and an umbilical for delivering chemicals to the manifold. The subsea well has been shut in, leaving produced fluids in a substantially uninhibited state. The method generally comprises the steps of pumping a displacement fluid into the chemical injection tubing, pumping the displacement fluid through a chemical injection tubing provided in the umbilical, further pumping the displacement fluid through the manifold and into the production line, and pumping the displacement fluid through the production line so as to displace the produced fluids before hydrate formation may begin. Preferably, a chemical inhibitor is placed in the chemical injection tubing before the displacement fluid is pumped into the chemical injection tubing.
摘要翻译： 提供了一种在海底生产系统中管理水合物的方法。 该系统具有至少一个生产海底井，用于将产生的流体从海底井输送到歧管的跳线，用于将产生的流体输送到生产收集设备的生产线以及用于将化学品输送到歧管的脐带。 海底井被关闭，使产生的流体基本上不受阻碍的状态。 该方法通常包括以下步骤：将置换流体泵送到化学注射管道中，通过设置在脐带中的化学注入管道泵送置换流体，进一步将置换流体泵送通过歧管并进入生产线，并泵送置换流体 通过生产线，以在开始水合物形成之前置换所产生的流体。 优选地，将化学抑制剂置于化学注入管道中，然后将置换流体泵送到化学注入管道中。
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公开(公告)号：US5874712A
公开(公告)日：1999-02-23
申请号：US763817
申请日：1996-12-11
申请人： Peter R. Toth , David C. Lucas
发明人： Peter R. Toth , David C. Lucas
CPC分类号： H01R13/5845 , H05B3/36 , H05B2203/003 , H05B2203/016
摘要： A flexible electric heater may be formed from multiple congruent planar layers secured to one another to form a laminate in a variety of configurations. A junction box is adhered to the planar layers over an opening in an outer layer. An adhesive catchment area in the laminate is filled with adhesive, and the adhesive extends into the junction box where it fills a second adhesive catchment area. The mass of continuous adhesive thus formed seals and bonds the junction box to the flexible planar layers. Conductors from the electrical heater pass through the adhesive and may be strain relieved.
摘要翻译： 柔性电加热器可以由彼此固定的多个相同的平面层形成，以形成各种构造的层压体。 接线盒在外层的开口上粘附到平面层。 层压体中的粘合剂收集区填充有粘合剂，并且粘合剂延伸到接合盒中，在其中填充第二粘合剂收集区域。 如此形成的连续粘合剂的质量将接线盒密封并结合到柔性平面层。 来自电加热器的导体通过粘合剂并且可以减轻应变。
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公开(公告)号：US20100193194A1
公开(公告)日：2010-08-05
申请号：US12670994
申请日：2008-08-21
IPC分类号： E21B43/01
CPC分类号： E21B37/06 , E21B43/01 , Y10T137/0352
摘要： A method for managing hydrates in a subsea production system is provided. The production system includes a host production facility, a control umbilical, at least one subsea production well, and a single production line. The method generally comprises producing hydrocarbon fluids from the at least one subsea production well and through the production line, and then shutting in the production line. In addition, the method includes the steps of depressurizing the production line to substantially reduce a solution gas concentration in the produced hydrocarbon fluids, and then repressurizing the production line to urge any remaining gas in the free gas phase within the production line back into solution. The method also includes displacing production fluids within the production line by moving displacement fluids from a service line within the umbilical line and into the production line. The displacement fluids preferably comprise a hydrocarbon-based fluid having a low dosage hydrate inhibitor (LDHI).
摘要翻译： 提供了一种在海底生产系统中管理水合物的方法。 生产系统包括主机生产设备，控制脐带，至少一个海底生产井和单一生产线。 该方法通常包括从至少一个海底生产井和生产线生产烃流体，然后在生产线上关闭。 此外，该方法包括对生产线进行减压以显着降低生产的烃流体中的溶解气体浓度的步骤，然后将生产线再加压以将生产线内的游离气相中的剩余气体推回溶液中。 该方法还包括通过将位移流体从脐带内的服务线移动到生产线中来移动生产线内的生产流体。 置换液优选包含具有低剂量水合物抑制剂（LDHI）的基于烃的流体。
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