Apparatus for sealing a tubing string in a high pressure wellbor

Details Apparatus for sealing a tubing string in a high pressure wellbor Apparatus for sealing a tubing string in a high pressure wellbor

1988-01-28

1989-08-29

Dang, Hoang C.

Wells

Above ground apparatus

Having retractable pipe section to allow closing of gate...

166 82, 166 84, 166 85, 166 86, 166 97, 166208, 251 13, E21B 1902, E21B 3306, E21B 3402

Patent

active

048608262

ABSTRACT:
Method and apparatus for hanging and sealing a tubing string in a high pressure wellbore. The invention discloses apparatus which enables the pulling of a tubing string on an injection well to be achieved without having to kill or bleed down the formation pressure. A support and flow control apparatus is provided for supporting the upper end of a tubing string that extends downhole in a cased borehole, while packing off the annulus between the tubing and the casing. The apparatus includes a tubing hanger which is connected to the upper end of the wellbore for supporting the upper end of the tubing string therefrom so that the string is in tension. The tubing hanger includes a hollow member having a boss formed thereon by which the hollow member is received in seated relationship within the support and flow control apparatus, and further includes a main body having a vertical passageway and a horizontal passageway formed therethrough in intersecting relationship respective to one another so that the two passageways are disposed perpendicularly respective to one another.

REFERENCES:
patent: 1753276 (1930-04-01), Quinn et al.
patent: 1793094 (1931-02-01), King
patent: 1989429 (1935-01-01), Segelhorst et al.
patent: 2085119 (1937-06-01), Penick et al.
patent: 2336977 (1943-12-01), Beam et al.
patent: 2486308 (1949-10-01), McCray et al.
patent: 2552901 (1951-05-01), Miller
patent: 2593793 (1952-04-01), Rector
patent: 2943148 (1960-04-01), Allaire
patent: 4265424 (1981-05-01), Jones

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