Three 10-mile-long submarine pipelines off California shore are laid simultaneously

Journal Article · Mon Jul 05 04:00:00 EDT 1982 · Oil Gas J.; (United States)

OSTI ID:6072202

McGraw, R E

This paper describes record-setting installation of pipelines by the bottom-pull method which uses a nine-station pipe make-up assembly ramp, similar to a lay-barge operation, except that the pipe is pulled offshore on the ocean bottom away from the rack in 40-ft increments by a pulling barge anchored offshore. The 3 pipelines connect the Union Oil Co. of California offshore drilling and production platform to the onshore separation and shipping facility. Welding procedures were developed with E-7010G Lincoln shield arc 65+ and HYP shielded metal arc electrodes using the manual metal arc downhill welding technique. Pulling forces for the bottom pull were developed with a 250,000-lb single line pull rated Skagit RB-150 winch on a 176 x 70 x 12 ft ABS derrick barge. Continuous communication was maintained between the 4-man barge crew and the base with FM radios.

• Research Organization: Hood Corp., Whittier, CA
• OSTI ID: 6072202
• Journal Information: Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 80:27; ISSN OIGJA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
022000* -- Petroleum-- Transport
Handling
& Storage
03 NATURAL GAS
032000 -- Natural Gas-- Transport
Handling
& Storage
42 ENGINEERING
423000 -- Engineering-- Marine Engineering-- (1980-)
BARGES
BUOYS
CALIFORNIA
COATINGS
EQUIPMENT
FABRICATION
FEDERAL REGION IX
HOISTS
JOINING
MATERIALS HANDLING
MATERIALS HANDLING EQUIPMENT
NORTH AMERICA
OFFSHORE OPERATIONS
OFFSHORE PLATFORMS
OFFSHORE SITES
PIPELINES
POSITIONING
PROTECTIVE COATINGS
UNDERWATER OPERATIONS
USA
WELDING
WINCHES