公开(公告)号：WO2002101277A2

公开(公告)日：2002-12-19

申请号：PCT/US2002/017659

申请日：2002-06-05

Applicant: MARATHON OIL COMPANY

Inventor： WAYCUILIS, John, J. ,  YORK, Stephen, D.

IPC: F16L

CPC classification number: B01J8/007 ,  B01J8/1836 ,  B01J8/388 ,  B01J2208/00115 ,  B01J2208/0015 ,  F17C11/007 ,  F28D13/00

Abstract: A transport process for a wet gas employs a subsea heat exchanger having first and second flowpaths separated by a heat transfer surface. A cooler heat transfer medium is conveyed through the first flowpath in a liquid phase while a warmer hydrocarbon stream having a gaseous hydrocarbon phase and a liquid aqueous phase is conveyed through the second flowpath, which cools the hydrocarbon stream and heats the heat transfer medium. The heat transfer medium is converted by heating to a vapor phase, which is conveyed to a passive condenser associated with the subsea heat exchanger. The ambient temperature of the sea water submersing the condenser cools the heat transfer medium and restores it to the liquid phase for reuse in the heat exchanger. A portion of the hydrocarbon stream is converted by cooling to a plurality of solid gas hydrate particles while a solid particle medium entrained within the hydrocarbon stream prevents the buil-up of gas hydrate particles in the second flowpath. The gas hydrate particles mix with the remaining liquid phase components of the hydrocarbon stream to form a gas hydrate slurry, which is withdrawn from the second flowpath and conveyed through a subsea transport pipeline.

Abstract translation: 用于湿气体的运输方法采用具有由传热表面分开的第一和第二流路的海底热交换器。 较冷的传热介质以液相方式通过第一流路输送，而具有气态烃相和液态水相的较热烃流被输送通过第二流路，该第二流路冷却烃流并加热传热介质。 传热介质通过加热转化为气相，将其输送到与海底热交换器相关联的被动冷凝器。 浸入冷凝器的海水的环境温度冷却传热介质并将其还原到液相中以在热交换器中重新使用。 烃流的一部分通过冷却转化为多个固体气体水合物颗粒，而夹带在烃流中的固体颗粒介质阻止第二流路中的气体水合物颗粒的填充。 气体水合物颗粒与烃流的剩余液相组分混合以形成气体水合物浆料，其从第二流动路径排出并通过海底输送管线输送。