Wells – Central chamber sealed with respect to prepositioned... – Surrounding conduit carries packer or plug
Patent
1987-03-09
1990-05-01
Dang, Hoang C.
Wells
Central chamber sealed with respect to prepositioned...
Surrounding conduit carries packer or plug
166142, 166214, 166222, 166237, 166242, E21B 4312
Patent
active
049210440
ABSTRACT:
Disclosed are selective and no-go systems for injecting fluids in a well and a system for orienting a tool in a landing nipple in a well conduit, which is utilized in the selective set injection system. Each injection system is comprised of a land nipple, an injection mandrel having openings for flow and an orientor. The landing nipples have wall openings for flow and orienting means which are engaged by the mandrel orientor as the mandrel is lowered into the landing nipple, orienting the mandrel and aligning the mandrel flow openings with the nipple flow openings. There are orifices in the flow openings in both mandrels to control injected flow through the mandrel. The system for orienting a tool in a landing nipple has an orientor attachable to a well tool. This orientor and the selective orientor have lugs which engage an orienting sleeve in the nipple and are guided into slots when lowered into the sleeve. The slot bottoms have camming surfaces which cam the lugs inwardly permitting the orientor and selective injection mandrel to be lowered through their nipples.
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Cox Roland O.
Dang Hoang C.
Otis Engineering Corporation
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