Blowout preventer for a side entry sub

Details Blowout preventer for a side entry sub Blowout preventer for a side entry sub

1986-08-12

1987-10-13

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166 651, 166120, 166129, 166386, 166387, E21B 2306, E21B 33128, E21B 33129, E21B 4700

Patent

active

046992162

ABSTRACT:
A side entry sub logging system has features for preventing a blowout should a kick in the casing annulus occur. A packer is mounted to the side entry sub below the sidewall passage. The packer has an elastomeric element for expansion of the element into sealing engagement with the casing. An actuating assembly is mounted in the sub for actuating the packer into sealing engagement with the casing. The actuating assembly acts to set slips in response to hydraulic pressure applied to the interior of the drill pipe from the surface. Then the drill pipe is picked up to move the elastomeric element into compression against the casing. The packer is released by removing the hydraulic pressure and lowering the drill pipe.

REFERENCES:
patent: 3606924 (1971-09-01), Malone
patent: 4071084 (1978-01-01), Brown et al.
patent: 4200297 (1980-04-01), Tricon
patent: 4388969 (1983-06-01), Marshall et al.
patent: 4399877 (1983-08-01), Jackson et al.
patent: 4457370 (1984-07-01), Wittrisch
patent: 4524834 (1985-06-01), Barron et al.
patent: 4597440 (1986-07-01), Pottier

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