Production well-heads for underwater oil wells

Details Production well-heads for underwater oil wells Production well-heads for underwater oil wells

1978-09-28

1980-09-23

Purser, Ernest R.

Wells

Submerged well

Wellhead

166 75A, 166 89, E21B 712

Patent

active

042237386

ABSTRACT:
In a production well-head for an underwater oil well the suspension head of the innermost tubing, which has a frusto conical surface on which the production tube suspension member seats, has a duct leading from the enclosed space between the innermost tubing and the tubing adjacent thereto, to the interior of the innermost tubing, and a duct communicating therewith is provided in the suspension member.

REFERENCES:
patent: 1863890 (1932-06-01), Wigle
patent: 3151680 (1964-10-01), Parkhurst et al.
patent: 3311168 (1967-03-01), Pierce, Jr.
patent: 3489213 (1970-01-01), Hutchison
patent: 3693714 (1972-09-01), Baugh

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