Title:
SYSTEMS AND METHODS FOR REPLACING, REPOSITIONING AND REPAIRING A SECTION OF SUBSEA PIPE LOCATED ON A SEABED
Document Type and Number:
WIPO Patent Application WO/2012/134680
Kind Code:
A3
Abstract:
Methods and systems are provided for replacing, repositioning and/or repairing a section of pipe within a pipeline located on a seabed. System components are delivered by a surface vessel to the vicinity of the damaged section of pipe. Piles are partially driven into the seabed adjacent the damaged section of pipe such that each of the piles has an exposed pile top above the seabed. Pile tops are employed to support load-bearing manipulator assemblies each having a hydraulically controlled manipulator arm having a a grapple capable of grasping and repositioning a section of pipe. The manipulator assemblies are operated to grasp, lift and manipulate pipe surrounding the damaged section. Other pile tops are employed to support spool supports capable of firmly holding a replacement spool piece of pipe during replacement operations. During replacement of a damaged section of pipe, the manipulator assemblies hold the pipe while cuts are made to free the damaged section. Above the surface, a replacement spool is made and fitted with spool supports and pipe connectors. The replacement spool is lowered and installed with the assistance of a remotely operated vehicle.
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Inventors:
LISO STEPHEN (US)
HARDING ERIC (US)
O'DONNELL THOMAS (US)
HARDING ERIC (US)
O'DONNELL THOMAS (US)
Application Number:
PCT/US2012/026462
Publication Date:
April 04, 2013
Filing Date:
February 24, 2012
Export Citation:
Assignee:
CHEVRON USA INC (US)
LISO STEPHEN (US)
HARDING ERIC (US)
O'DONNELL THOMAS (US)
LISO STEPHEN (US)
HARDING ERIC (US)
O'DONNELL THOMAS (US)
International Classes:
F16L1/16; F16L1/26; F16L55/18
Domestic Patent References:
| WO2009064559A1 | 2009-05-22 |
Foreign References:
| US7635239B2 | 2009-12-22 | |||
| US4218158A | 1980-08-19 | |||
| US6290431B1 | 2001-09-18 |
Attorney, Agent or Firm:
DIDOMENICIS, Karen R. et al. (Law DepartmentP.O. Box 600, San Ramon California, US)
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