Wells – Processes – Placing or shifting well part
Patent
1995-04-11
1996-09-10
Buiz, Michael Powell
Wells
Processes
Placing or shifting well part
166153, E21B 2300, E21B 4300
Patent
active
055536719
ABSTRACT:
An oilfield piston sub for isolating drilling fluids from hydraulic fluids while setting a whipstock attached to a hydraulic packer is disclosed. The improved device reduces the number of moving parts within existing art resulting in a more reliable device. Once the hydraulic packer is set, the isolating piston within the piston sub drops completely out of the way allowing drilling fluids to exit from the bottom of the piston sub without any impediment.
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Alworth C. W.
Buiz Michael Powell
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