摘要 |
<p>A system for bringing producing oil and gas from a subsea gathering manifold or wellhead, including a loop (1 18) having an upper end at the surface and a lower end below the surface, the loop (1 18) rotatable around a closed path, and production vessels ( 116) attached to the cable loop (118), each production vessel (1 16) having a hollow interior, the weight of the plurality of production vessels (1 16) sufficient, when filled with seawater, to cause the production vessels (1 16) to sink, the plurality of production vessels (1 16) each having an inlet pipe (127), The system also includes a plurality of receivers (132) attached to the production gathering manifold or wellhead that receive production fluid, the receivers (132) engaging production vessels (1 16) and filling them with well fluid while seawater is discharged from the production vessels (1 16), the production fluid having a lower density than ambient seawater so that the production vessels (1 16) become buoyant when filled with the production fluid.</p> |