Dual string assembly for gas wells

Details Dual string assembly for gas wells Dual string assembly for gas wells

1996-03-18

1998-07-07

Suchfield, George A.

Wells

Above ground apparatus

With assembly or disassembly means

166 7514, 166 892, 166 975, 166313, E21B 33047, E21B 4314

Patent

active

057754209

ABSTRACT:
A dual completion for gas wells includes a dual base with a primary hanger incorporated in the base. Primary and secondary coiled tubing strings extend through the base at a downwardly converging angle of 2.degree. or less. The dual base is mounted on an annular blowout preventer. At the top of the annular blowout preventer is a tubing centralizer that aligns the two tubing strings parallel to one another. The blowout preventer has two side ports below the bladder allowing the operator to produce gas from the annulus, to flare gas to atmosphere or to pump in kill fluid in the event of an emergency. The alignment of the tubing strings allows production recorders to be run in either string.

REFERENCES:
patent: 3042427 (1962-07-01), Word, Jr.
patent: 3099317 (1963-07-01), Todd
patent: 3134614 (1964-05-01), Brooks
patent: 3170518 (1965-02-01), Brown
patent: 3190354 (1965-06-01), Stone
patent: 3409084 (1968-11-01), Lawson, Jr. et al.
patent: 3451481 (1969-06-01), Lanmon, II
patent: 4474236 (1984-10-01), Kellett
patent: 5458199 (1995-10-01), Collins et al.

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