| 摘要 |
A method and apparatus for use in connection with offset landing nipples connected in a flow conductor of a pumpdown well installation for installing and removing tools therein, including a tandem kick-over running and pulling tool arrangement for removing a well device from and subsequently installing another well device in the side pocket of offset landing nipple housings, and the method of changing the well tool positioned in the side pocket of the offset housings and for installing another well device in the receptacle from which the first device was removed, both operations being effected during a single trip of the pump-down tools into and out of the well flow conductor string. The apparatus and method also contemplates preventing flow of fluids from the producing flow conductor the exterior thereof through the lateral inlet opening of the side pocket landing nipple or receptacle of the housing, through a large differential may exist between the interior and exterior of the flow conductor.
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