TECHNOLOGY Threaded riser connectors save time in deepwater installation

Steve Brashier Enserch Exploration Inc. Houston Joseph R. Roche Hydril Co. Houston Installation of threaded connectors on the 12-in. oil and the 8-in. gas export risers on Enserch Exploration Inc.'s Gulf of Mexico, Garden Banks (GB 388) production system saved both installation time and costs. Original plans for the GB 388 floating production facility (FPS) called for welding the joints to assemble each riser. However, during the planning stages, an evaluation showed that threaded connectors (Fig. 1 [64365 bytes]) instead of welding im proved project economics. Moreover, if it became necessary to pull and re-run a riser (which actually happened), the clean fast make/break of t...

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