E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/04 (2006.01) E03B 3/16 (2006.01) E21B 33/00 (2006.01)
Patent
CA 2285853
Secured to an exterior surface of a well casing having an aperture formed therein is a first unit including a horizontal fluid passage receiving a horizontal pipe and extending through a generally annular seat in registration with the aperture. A second unit is disposed within an interior surface of the wall casing for supporting a vertical pipe and pump assembly and includes a generally planar flange adapted to be slidably received in a blind channel of the first unit at an angle relative to the longitudinal axis of the well casing so as to provide a continuous fluid passage between the vertical pipe and the horizontal pipe. The annular seat of the first unit is completely recessed from the inner surface of the well casing such that upon release of the second unit from the first unit, the second unit and its pump assembly are movable in a totally obstruction- free path through the interior surface of the well casing. The external unit has internal structure and a sealing arrangement disposed outside the aperture between an inner surface of the external unit and the exterior surface of the well casing cooperable to signal a fluid warning upon damage and destruction to at least the sealing arrangement.
Borden Ladner Gervais Llp
Surinak John J.
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