SUBSEA COMPLETION AND REWORK SYSTEM FOR DEEP WATER OIL WELLS

A subsea completion system for a plurality of wells drilled from a single template, the template being divided into a plurality of wellhead sections and a plurality of equipment sections. Each wellhead section of the template has a concentric stab ring around the wellhead with the production and service tubing extending from the stab rings of the respective wellhead sections to similar stab rings in the equipment sections of the template. Well completion modules, header modules, separator modules, and power equipment modules are individually connected by means of a mating stab ring at the bottom of the modules to the respective stab rings in the template sections after the template is placed on the sea floor and the wells are drilled. Each well completion module includes the production tree, tubing, hydraulic controls, and equipment necessary to operate the well, the tubing and hydraulic lines terminating in the bottom stab ring for connection to the template. An upper stab ring is provided at the top of each module with tubing extending directly to the tubing connections in the lower stab ring through diverters. A multiposition diverter unit is attachable from the surface to the upper stab ring and can be operated to connect a riser to any one of the tubing connections in the stab ring, providing a direct tubing path between the riser and any one of the tubing connections in the corresponding section of the template. The direct tubing connection provides access for the setting or removal of plugs in the tubing in each template section from the surface through the associated module. This permits the tubing in the template to be shut off, permitting removal of any of the modules from the surface.