Title:
METHOD OF AND APPARATUS FOR INSTALLING STANDING PIPE ON OFFFSHORE PLATFORM
Document Type and Number:
Japanese Patent JPS52144301
Kind Code:
A
Abstract:
A riser having a 90 DEG bend at its lower end is installed at an offshore platform by mounting the riser within casing with a horizontal leg from the 90 DEG bend extending through a hole in the wall of the casing and lowering the casing through guide funnels extending inwardly from the framework of the platform. The guides have openings in their side walls facing inwardly through which the 90 DEG bend passes as the casing and riser are lowered. When the 90 DEG bend is a short distance above the ocean bottom, a lug on the casing enters an oblique slot in an orienting funnel. Further lowering of the casing causes orientation of the casing as the lug travels through the oblique slot to a position with the horizontal leg of the bend in the riser extending along the desired azimuth.
Inventors:
RANDORUFU BURAIANTO JIYUNIA
Application Number:
JP539877A
Publication Date:
December 01, 1977
Filing Date:
January 20, 1977
Export Citation:
Assignee:
GULF RESEARCH DEVELOPMENT CO
International Classes:
E21B43/01; F16L1/15; (IPC1-7): E21B43/01