Wells – Above ground apparatus – Moving tubing or cable into an existing well
Patent
1989-08-24
1990-11-27
Kisliuk, Bruce M.
Wells
Above ground apparatus
Moving tubing or cable into an existing well
166 90, 166 97, 166312, 166 85, E21B 33068, E21B 3303
Patent
active
049729047
ABSTRACT:
A system for injecting chemicals into a geothermal well near the bottom of the well bore for optimum efficiency. The system includes a spool assembly with a master valve for control of the geothermal flow and a secondary outlet formed of an angle to permit the chemical injection chamber to be lowered into the well. The secondary outlet is attached to the main spool in such a way as to allow internal thermal expansion while permitting the chemical injection chamber to be fed by capillary tube to the bottom of the well bore. The chemical injection device includes an injection chamber through which the chemical is disbursed and a segmented sinker bar to provide the necessary weight to carry the chamber to the bottom of the well against the geothermal well flow. An annular seal assembly in the spool prevents leaking by being pressure energized by the geothermal production fluid. As a result, production can continue during the chemical injection process.
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Disante Ezio
Foster Oilfield Equipment Co.
Kisliuk Bruce M.
Sutherland Malcolm L.
Zarins Edgar A.
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