Wells – Packers or plugs – With central conduit and fluid port to space outside
Patent
1986-08-25
1987-06-09
Novosad, Stephen J.
Wells
Packers or plugs
With central conduit and fluid port to space outside
166127, 166129, 166147, 166191, 166373, 166334, E21B 33124, E21B 3412
Patent
active
046713522
ABSTRACT:
In the representative embodiment of the invention described herein, formation-treating apparatus is adapted to be dependently supported in a well bore from a pipe string and which includes upper and lower telescoped body members adapted to be selectively moved between upper and lower operating positions for controlling the injection of treating fluids into one or more earth formations traversed by the well bore. A pair of spaced packer elements are mounted on the lower member above and below a discharge port and cooperatively arranged for isolating a well bore interval that is to be treated by discharging one or more treating fluids in the pipe string from the port. To control the injection of treating fluids, retrievable valve means are also cooperatively arranged within the body members and adapted to be alternatively seated on upper and lower full-bore valve seats in the upper and lower bodies in response to movement of the bodies to their operating positions. In this manner, whenever the upper body member is moved to one of its operating positions, the valve means will be seated on the lower valve seat and unseated from the upper valve seat to open fluid communication between the pipe string and the treating tool. On the other hand, whenever the upper body member is moved to its other operating position, the valve means will be seated on the upper valve seat to trap treating fluids in the pipe string and discharge any unused fluids into the well bore.
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Magee, Jr. Robert L.
Traweek, IV Marvin B.
Arlington Automatics Inc.
Novosad Stephen J.
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