Wells – Processes – Placing or shifting well part
Patent
1992-03-04
1994-05-24
Dang, Hoang C.
Wells
Processes
Placing or shifting well part
166 72, 166242, 166317, 166319, 166322, 166330, E21B 3414, E21B 3410
Patent
active
053140265
ABSTRACT:
A safety valve landing nipple selectively provides a pin for closing communication in the bore between the first control line and the safety valve control line so that communication between the first control line and an insert safety valve in the landing nipple housing is achieved by use of a rotary member. A rotary shifting tool is used to rotate the rotary member so that a cam sleeve pushes a poppet pin to form a metal to metal seal with a fitting adaptor connecting the first control line and the safety valve control line so as to provide communication between the surface control line and the internal bore of the landing nipple. A method of closing communication within a safety valve landing nipple between a first control line and a safety valve control line and opening communication between said first control line and an insert safety valve by use of a rotary shifter assembly to rotate a rotary member an amount sufficient to push a poppet pin to form a metal to metal seal to close communication between a first control line and a safety valve control line and open communication between the first control line and the insert safety valve.
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Dang Hoang C.
Daunis Jennifer R.
Otis Engineering Corporation
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