Wells – With explosive or gas generating means in well
Patent
1986-12-11
1988-04-26
Novosad, Stephen J.
Wells
With explosive or gas generating means in well
166169, 166286, E21B 33132
Patent
active
047398299
ABSTRACT:
An improved wireline operated oil well dump bailer includes an elongated tool body having a longitudinal bore that extends through the tool body, the bore including a chamber section for carrying cement. A port through the tool body provides fluid communication between the tool bore and the oil well bore. A piston is slidably movable within the tool body between a first position in which the piston seals the port and a second position in which the piston is spaced from the port so that well bore fluid pressure can enter the tool body through the port and communicate with the piston. A trigger carried by the tool body, preferably in the form of an explosive charge which can be activated using the wireline moves the piston away from the first position to the second position so that the well fluid pressure enters the bore and powers the piston to dispense cement from the cement carrying chamber section. A dispensing outlet allows the cement to enter the well bore from the chamber responsive to pressure applied by the piston.
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