Production riser

Details Production riser Production riser

1978-08-11

1980-04-15

Taylor, Dennis L.

Hydraulic and earth engineering

Marine structure or fabrication thereof

166359, 175 7, 405202, B63B 3544, E21B 712, B63B 2100

Patent

active

041981790

ABSTRACT:
A riser for production of oil and gas in a marine location with the riser connected to the casing supported at the mud line of a body of water and extending upward in the water to a tension moored floating structure. The riser includes a flexible joint near its connection to the casing and is supported at its upper end from the floating structure and is also supported from the floating structure at a point between 50 and 175 feet below the water level. A production string extends upwardly from the producing zone through the casing, the flexible joint and the riser to the floating structure and wellhead equipment is supported on such riser. Centralizers are provided for the production string with the centralizer immediately above the flexible joint being between 35 to 65% of the total distance between such centralizer and the centralizer positioned immediately below the flexible joint.

REFERENCES:
patent: 3454116 (1969-07-01), Hunsucker
patent: 3508409 (1970-04-01), Cargile
patent: 3528497 (1970-09-01), Lehman
patent: 3554277 (1971-01-01), Bauer
patent: 3559410 (1971-02-01), Blenkarn et al.
patent: 3559411 (1971-02-01), Blenkarn
patent: 3638721 (1972-02-01), Harrison
patent: 3817325 (1974-06-01), Mott et al.
patent: 3983706 (1976-10-01), Kalinowski
patent: 4142584 (1979-03-01), Brewer et al.

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