Subsurface well apparatus and method

Claim 2

Apparatus for mounting in a well tubing for receiving and operating a means movable through the well tubing to the apparatus for controlling flow of fluid in the bore of the tubing, including: a. a housing having a longitudinal bore therethrough connected with a well tubing with said bore communicating with the bore of the well tubing; b. said housing having a movable control member mounted therewith for imparting movement disposed in said bore of said housing; c. means for controlling the flow in said bore releasably securable in said bore at an operating position adjacent said control member; and d. means for operably securing said control member with said means for controlling flow in the bore wherein movement of said control member controls flow of fluid through the bore of said housing.

Claim 3

The structure as set forth in Claim 1 wherein said means for operably securing said control member with said means for controlling flow in the bore includes: a. a latch member movably connected with said means for controlling flow in the bore; b. a latch dog mounted with said means for controlling flow in the bore, and adapted to move into a recess when aligned therewith; and c. said control member having a surface with a recess therein, said latch dog moving into said recess when aligned therewith wherein said latch member locks said latch dog with said control member to effect operation of said means for controlling flow in the bore.

Claim 4

a latch dog mounted with said mover means and adapted to move into a recess when aligned therewith; and

Claim 5

a latch dog mounted with said mover means and adapted to move into a recess when aligned therewith; and

Claim 6

the control member having a surface with a recess formed therein into which said latch dog moves when aligned therewith wherein said latch member locks said latch dog in the recess to effect movement of said plug means to control the flow of fluid in the bore of the tubing by movement of the control member.

Claim 7

the control member having a surface with a recess formed therein into which said latch dog moves when aligned therewith wherein said latch member locks said latch dog in the recess to effect movement of said plug means to control the flow of fluid in the bore of the tubing by movement of the control member.

Claim 8

The structure as set forth in claim 2, wherein a plurality of latch dogs are mounted with said means for controlling flow in the bore for moving into said aligned recess wherein said latch member locks said plurality of latch dogs with said control member.

Claim 9

The structure as set forth in claim 1 wherein said means for controlling flow in the bore includes: a. a frame means; b. a plug means mounted with said frame means for movement to and from the open and closed position; c. a mover means for imparting movement to said plug means to move said plug means to and from open and closed positions; and d. means for releasably securing said frame means with said housing.

Claim 10

The structure as set forth in claim 4, wherein said means for releasably securing said frame means with said housing includes: a. a latch member movably connected with said frame means; b. a latch dog mounted with said frame and adapted to move into a recess when aligned therewith; and c. the bore of the housing having a surface with a recess therein into which said latch dog moves when aligned therewith wherein said latch member locks said latch dog in said recess.

Claim 11

The structure as set forth in claim 5 wherein a plurality of latch dogs are mounted with said frame means for moving into said aligned recess wherein said latch member locks said plurality of latch dogs in said recess.

Claim 12

The structure as set forth in claim 6, wherein said means for operably securing said control member with said means for controlling flow in the bore includes: a. a latch member movably connected with said mover means; b. a latch dog mounted with said mover means, and adapted to move into a recess when aligned therewith; and c. said control member having a surface with a recess therein, said latch dog moving into said recess when aligned therewith wherein said latch member locks said latch dog with said recess.

Claim 13

The structure as set forth in claim 7, wherein a plurality of latch dogs are mounted with said mover means for moving into said aligned recess wherein said latch member locks said plurality of latch dogs with said control member.

Claim 14

Apparatus for mounting a closure means in a well tubing to control the flow of fluid in the bore of the tubing and adapted to receive and operate a means for controlling the flow in the bore of the tubing movable through the well tubing to the apparatus when the closure means malfunctions, including: a. a housing having a bore therethrough connected with a well tubing with said bore communicating with the bore of the well tubing; b. a bore closure means disposed in said bore of said housing for movement to and from open and closed positions; c. means disposed in said bore of said housing for imparting movement to said bore closure means to and from open and closed positions; and d. means mounted with said housing for moving a member into said bore with said bore closure means in the open position for operably positioning in said bore the means for controlling the flow in said bore.

Claim 15

Apparatus for mounting a closure means in a well tubing to control the flow of fluid in the bore of the tubing and adapted to receive and operate a means for controlling the flow in the bore of the tubing movable through the well tubing to the apparatus when the closure means malfunctions, including: a. a housing having a bore therethrough connected with a well tubing with said bore communicating with the bore of the well tubing; b. a bore closure means disposed in said bore of said housing for movement to and from open and closed positions; c. means disposed in said bore of said housing for imparting movement to said bore closure means to and from open and closed positions; and d. means mounted with said housing for moving a member into said bore with said bore closure means in the open position for operably positioning in said bore the means for controlling the flow in said bore.

Claim 16

A flow control assembly adapted to be positioned in the bore of a tubing having a movable control member disposed therein for effecting control of the flow of fluid in the bore of the tubing including: a. a frame means having a bore therethrough communicating with the bore of the tubing; b. a plug means mounted with said frame means for movement to and from open position for enabling flow in said bore and closed position for blocking flow through said bore; c. mover means for imparting movement to said plUg means to move said plug means to and from open and closed positions; d. means for releasably securing said mover means with the control member comprising:

Claim 17

A flow control assembly adapted to be positioned in the bore of a tubing having a movable control member disposed therein for effecting control of the flow of fluid in the bore of the tubing including: a. a frame means having a bore therethrough communicating with the bore of the tubing; b. a plug means mounted with said frame means for movement to and from open position for enabling flow in said bore and closed position for blocking flow through said bore; c. mover means for imparting movement to said plUg means to move said plug means to and from open and closed positions; d. means for releasably securing said mover means with the control member comprising:

Claim 18

The structure as set forth in claim 10, wherein: a plurality of latch dogs are mounted with said mover means for moving into the aligned recess of the control member wherein said latch member locks said plurality of latch dogs in the recess for controlling the flow of fluid.

Claim 19

The structure set forth in claim 11, wherein: said plurality of latch dogs are disposed within a corresponding plurality of windows formed in said mover means for moving into the aligned recess of the control member.

Claim 20

The structure as set forth in claim 10, wherein: said mover means includes a member movable relative to and connected with said frame means for mounting said latch dog for securing the member with the control member to move said plug means.

Claim 21

The structure as set forth in claim 12, including: means for releasably securing said frame means with the tubing at a desired location adjacent the control member.

Claim 22

The structure as set forth in claim 14, wherein said means for releasably securing said frame means with the tubing comprises: a. a latch member movably connected with said frame means; b. a latch dog mounted with said frame means and adapted to move into a recess when aligned therewith; and c. the tubing having a surface with a recess therein, said latch dog moving into said recess when aligned therewith wherein said latch member locks said latch dog with said tubing wherein said frame means is secured in the bore of the tubing.

Claim 23

The structure as set forth in claim 13, wherein: a plurality of latch dogs are mounted with said frame means for moving into said aligned recess wherein said latch member locks said plurality of latch dogs with the tubing.

Claim 24

The structure as set forth in claim 16, wherein: said plug means includes a ball having a bore therethrough with said ball rotating to and from open and closed positions to control the flow.

Claim 25

The structure as set forth in claim 17, wherein: said ball includes a spherical outer surface of a diameter substantially equal to the diameter of the bore of the tubing.