Wells – Processes – Cementing – plugging or consolidating
Patent
1986-11-04
1987-11-17
Novosad, Stephen J.
Wells
Processes
Cementing, plugging or consolidating
166376, 166 546, 166117, 166168, 206601, 220 89A, 220277, E21B 3313
Patent
active
047067535
ABSTRACT:
A capsule for conveying chemicals through a borehole for stopping lost circulation has a fragile bottom plate. A weight for destroying the bottom plate is suspended above the capsule by a cord which extends over knife edges. A messenger for cutting the cord is mounted to a wire line. The weight is caused to collide with the messenger to cut the cord, for breaking the bottom plate. Thus, the chemicals are diffused.
REFERENCES:
patent: 2366373 (1945-01-01), Voorhees
patent: 2707520 (1955-05-01), Jordan
patent: 2978029 (1961-04-01), O'Reilly
Kamata Seizo
Kitano Masayasu
Ohkochi Katsutoshi
Ohshita Toshiyuki
Shinozaki Mamoru
Fidelman Morris
Kisliuk Bruce M.
Novosad Stephen J.
Takanaka Komuten Co., Ltd
Wolffe Franklin D.
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