Top entry sub arrangement

Details Top entry sub arrangement Top entry sub arrangement

1993-02-04

1994-02-08

Bui, Thuy M.

Wells

Processes

Placing or shifting well part

1661175, E21B 2300

Patent

active

052842100

ABSTRACT:
A top entry sub (ES) includes a tubular member (TM) with a main body section (8) and an enlarged external diameter upper end portion (11). A single passage (15) extends through the main body section (8) and terminates in a pair of spaced passages (14) and (14a) that extend through the enlarged external diameter end portion (11), which passages terminate in a common upper surface on the top entry sub (ES) for receiving a well string and providing an entry into the top entry sub for members such as coiled tubing, snubbing members and cable.

REFERENCES:
patent: 4062551 (1977-12-01), Base
patent: 4200297 (1980-04-01), Tricon
patent: 4224986 (1980-09-01), Rothberg
patent: 4388969 (1983-06-01), Marshall et al.
patent: 4399877 (1983-08-01), Jackson et al.
patent: 4506729 (1985-03-01), Davis, Jr. et al.
patent: 4524834 (1985-06-01), Barron et al.
patent: 4681162 (1987-07-01), Boyd
patent: 4976314 (1990-12-01), Crawford et al.

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