초록 ▼

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 flo

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.

대표청구항 ▼

A well system comprising: (a) a casing in the well, said casing having perforations opposite an earth formation; (b) a flow conduit in said casing; (c) a packer on said flow conduit, said packer set in said casing above said formation; (d) perforations below said packer in said casing, said perforat

A well system comprising: (a) a casing in the well, said casing having perforations opposite an earth formation; (b) a flow conduit in said casing; (c) a packer on said flow conduit, said packer set in said casing above said formation; (d) perforations below said packer in said casing, said perforations communicating said formation with the inside of said casing; (e) a landing nipple in said flow conduit below said packer, said nipple having therein upper profiled grooving, a seal bore below said grooving, a no-go landing shoulder below said bore, orienting pins below said shoulder, wall flow openings in said nipple below said pins, and a smaller seal bore below said openings, said orienting pins above said lower seal bore; and (f) mandrel means for landing in said nipple including a lock mandrel having seals thereon for locking and sealing said mandrel means in said nipple, said mandrel means having wall flow openings and orienting means coengageable with said nipple orienting pins for orienting said mandrel means when landed in said nipple to align said nipple and mandrel means wall flow openings so that fluid may flow between said formation and the inside of said flow conduit through said flow openings and perforations.