Deep water X-mas tree standardization -- Interchangeability approach

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:160664

Paula, M T.R.; Paulo, C A.S.; Moreira, C C ^[1]

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1. Petrobras, Rio de Janeiro (Brazil)

Aiming the rationalization of subsea operations to turn the production of oil and gas more economical and reliable, standardization of subsea equipment interfaces is a tool that can play a very important role. Continuing the program initiated some years ago, Petrobras is now harvesting the results from the first efforts. Diverless guidelineless subsea Christmas trees from four different suppliers have already been manufactured in accordance to the standardized specification. Tests performed this year in Macae (Campos Basin onshore base), in Brazil, confirmed the interchangeability among subsea Christmas trees, tubing hangers, adapter bases and flowline hubs of different manufacturers. This interchangeability, associated with the use of proven techniques, results in operational flexibility, savings in rig time and reduction in production losses during workovers. By now, 33 complete sets of subsea Christmas trees have already been delivered and successfully tested. Other 28 sets are still being manufactured by the four local suppliers. For the next five years, more than a hundred of these trees will be required for the exploration of the new discoveries. This paper describes the standardized equipment, the role of the operator in an integrated way of working with the manufacturers on the standardization activities, the importance of a frank information flow through the involved companies and how a simple manufacturing philosophy, with the use of construction jigs, has proved to work satisfactorily.

• OSTI ID: 160664
• Report Number(s): CONF-950501--
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
BRAZIL
COST BENEFIT ANALYSIS
DESIGN
NATURAL GAS WELLS
OFFSHORE SITES
OIL WELLS
STANDARDIZATION
WELLHEADS