Production tubes for use in the completion of an oil well
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United States of America Patent
Stats
-
Jan 28, 1986
Grant Date -
N/A
app pub date -
Oct 15, 1984
filing date -
Oct 19, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A connector for incorporation in a production tube for an oil well, below the packer, comprises a closing flap which closes when a first retractable ball seat is displaced downwards, in order to provide a safety device during the installation of the well head, and above the flap, a second retractable ball seat which, when it is moved away axially downwards, causes the flap to open and be maintained in the open position, in order to put the well in a state of production. The balls seats are provided in the upper portions of two resiliently radially expandable sleeves and are displaced downwardly by the application of fluid pressure to the space within the production tube above their other closure of the respective seat by a ball dropped on to the seat from above.
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