Annulus plugging

Details Annulus plugging Annulus plugging

1981-02-27

1983-11-29

Purser, Ernest R.

Wells

Processes

Placing or shifting well part

166285, 166288, 166292, 166295, F21B 3313

Patent

active

044176252

ABSTRACT:
A method of plugging an elongate annulus, particularly an annulus in an oil well in which a blow-out is occurring, consists in the steps of securing hot tapping apparatus to an outer tubular member within which the annulus is situated; forming a hot tapping in the outer tubular member; injecting, through the hot tapping and into the annulus, curable synthetic material; and allowing the curable synthetic material to cure in the annulus and form a pressure resistant plug therein.
The curable synthetic material may be injected with injection apparatus having an injection barrel movable in a support, the support being sealable to the hot tapping, means for axially moving the barrel in the support and means for metering and feeding plugging material from the barrel into the annulus.

REFERENCES:
patent: 1879160 (1932-09-01), Fowzer
patent: 2708973 (1955-05-01), Twining
patent: 3063734 (1962-11-01), Toelke
patent: 3144049 (1964-08-01), Ginsburgh
patent: 3265782 (1966-08-01), Rosengarten, Jr. et al.
patent: 3277964 (1966-10-01), Houpeurt et al.
patent: 3368005 (1968-02-01), Buczala et al.
patent: 3603398 (1971-09-01), Hutchison et al.
patent: 3631928 (1972-01-01), Dalzell
patent: 3647000 (1972-03-01), Rowley et al.
patent: 3717202 (1973-02-01), Burrow
patent: 3720260 (1973-03-01), Duck et al.
patent: 3738424 (1973-06-01), Osmun
patent: 3993137 (1976-11-01), Heftz

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