Wells – With below and above ground modification – Eduction pump or plunger in well
Patent
1974-06-21
1976-01-27
Abbott, Frank L.
Wells
With below and above ground modification
Eduction pump or plunger in well
61 723, E21B 4301
Patent
active
039346471
ABSTRACT:
The system herein involves interconnection of an underwater well head assembly with a central gathering platform in an ocean or sea environment. A drilling vessel for drilling a well peripherally disposed with respect to the central gathering platform has capacity for forming and/or containing continuous lengths of production pipelines on spools or reels located adjacent to its drilling derrick. The charging of the spools or reels with continuous production pipelines can be accomplished simultaneously with the drilling of the well by the drilling vessel. Alternatively, production pipeline can be loaded on a reel and transported separately to the drilling vessel. At any desired time before or when drilling is completed and prior to the installation of the underwater well head, cable means are extended from a spool or reel on the gathering platform and coupled to an exposed end of a spooled production pipeline. A cable extends through a depending "J" tube or other suitable device on the central gathering platform so that the end of the pipeline attached to the cable can be drawn to a position along the ocean floor and through the J tube to the gathering platform. Each of the production pipelines to be connected as well as the electrical cable assembly are thus extended between the drilling vessel and the gathering platform. The extended production pipelines at the drilling vessel site are cut so that these cut ends can be attached under the derrick to the underwater well head assembly. The well head assembly with the interconnected production pipelines is then lowered vertically through the water from the drilling vessel while the slack in the pipelines is taken up by pull on the pipeline at the production platform. Another cable can be connected to an anchor or tug and to the well head for providing counter, opposing forces to maintain the descent of the well head vertical until the underwater well head site is reached. Means are provided in connection with the spooling device on the drilling vessel for straightening the production pipeline as well as feeding it relative to the spooling reel.
REFERENCES:
patent: 3226728 (1965-12-01), Walvoord
patent: 3352356 (1967-11-01), Wakefield
patent: 3595312 (1971-07-01), Matthews
patent: 3658270 (1972-04-01), Slator et al.
patent: 3729941 (1973-05-01), Rochelle
patent: 3797570 (1974-03-01), Leutwyler
Abbott Frank L.
Dolphin International, Inc.
Favreau Richard E.
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