CN215108847U

CN215108847U - Novel multifunctional bridge plug packer

Info

Publication number: CN215108847U
Application number: CN202120672565.XU
Authority: CN
Inventors: 季会军
Original assignee: Daan Hongyuan Pipe Co ltd
Current assignee: Daan Hongyuan Pipe Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-12-10
Anticipated expiration: 2031-04-01

Abstract

The utility model provides a novel multifunctional bridge plug packer, a hydraulic cylinder is arranged at the lower end of an upper joint, a retaining cover is arranged at the lower end of the upper hydraulic cylinder, a transition joint is arranged in the lower end of the upper joint, an inner pipe is arranged in the lower end of the transition joint, a piston is arranged outside the inner pipe, the piston is fixed on the transition joint by a setting shear pin, a fishing head is arranged outside the inner pipe, a bridge plug seat pipe is arranged inside the lower end of the inner pipe, a bridge plug seat pipe sleeve is fixed at the lower end of the bridge plug seat pipe by a releasing shear pin, the lower end of the inner pipe is inserted into a central pipe, a gland is arranged outside the upper end of the central pipe, the upper end of the gland is arranged inside the fishing head, the gland and the fishing head are fixed by a deblocking shear pin, an outer locking block and an inner locking block are arranged on the gland, a connecting sleeve is arranged between the retaining cover and a boss at the end part of the gland, the lower end of the gland is connected with a setting rubber cylinder component, the upper end of the upper cone and the lower cone, the slips are connected between the upper cone and the lower cone, the lower retaining cover is installed on the outer side of the lower end of the lower cone, and the lower joint is installed on the outer side of the lower end of the central pipe.

Description

Novel multifunctional bridge plug packer

Technical Field

The utility model belongs to the used packer field in the oil field especially relates to a novel multi-functional bridging plug packer.

Background

The packer is a special downhole tool for sealing and separating oil, gas and water layers in a downhole casing or an open hole. The packing principle is that the length of the rubber tube is shortened and the diameter of the rubber tube is increased by external force to seal the annular space of the oil and the casing, and the upper and lower oil (gas and water) layers of the packing are separated, so that the aims of layered testing, layered oil extraction, layered water injection, layered reconstruction and water layer plugging of the oil and water wells are fulfilled.

The bridge plug is a packer which stays in a certain depth in a well and is separated from a pipe string, so the bridge plug is also called a releasing packer. The bridge plug is mainly used for replacing a dust plug and is used for plugging a bottom layer, sealing a well and the like; separately extracting a blocked water layer; the downhole packer is used as a bottom packer or a special operation tool for squeezing cement, fracturing, water plugging and the like in downhole operation.

The releasing tool is mainly composed of a releasing part and a salvaging part, the releasing tool is positioned at the upper part of the control pipe column, after the packer is sealed, the pressure is continuously increased, the control piston goes down to cut the control shear pin, the pump pressure suddenly drops when the ground observes, the sleeve returns water, and the releasing can be realized after the sleeve is lifted.

Present packer has many kinds, but the function singleness, can not realize simultaneously with simple structure and seal the partition, bridging plug and the multiple function of giving up, simultaneously present packer's deblocking shear pin one kind sets up on the inner tube, the thickness of inner tube generally can not set up too thick, can cause the damage to the inner tube during the deblocking, on the other hand sets up shear pin position intensity hardness requirement all than higher, need carry out heat treatment, the inner tube is general longer, inconvenient local heat treatment carries out, in addition the deblocking shear pin sets up on the top connection, the top connection will be connected with last cylinder on the one hand, in addition on the one hand will pass through the shear pin with the piston connection and connect, the structure is more complicated, the machining degree of difficulty increases.

SUMMERY OF THE UTILITY MODEL

The utility model aims at designing a novel multi-functional bridging plug packer possesses simultaneously and seals and separate, bridging plug and the function of giving up, and the deblocking shear pin sets up on the transition joint between inner tube and top connection, simple structure, and intensity is high, connects reliably.

In order to realize the purpose of the utility model, the utility model provides a novel multifunctional bridge plug packer, which comprises an upper joint, wherein an upper hydraulic cylinder is arranged outside the lower end of the upper joint, a baffle cover is arranged at the lower end of the upper hydraulic cylinder, the upper hydraulic cylinder is fixed on the upper joint by a lock nut, a transition joint is arranged inside the lower end of the upper joint, an inner pipe is arranged inside the lower end of the transition joint, a piston is arranged outside the inner pipe and close to the transition joint, the piston is fixed on the transition joint by a setting shear pin, a fishing head is arranged below the piston outside the inner pipe, a bridge plug seat pipe is arranged inside the lower end of the inner pipe, a bridge plug seat pipe sleeve is arranged at the lower end of the bridge plug seat pipe, the bridge plug seat pipe sleeve is fixed at the lower end of the bridge plug seat pipe by a releasing shear pin, the lower end of the inner pipe is inserted into a central pipe, a gland is arranged outside the upper end of the central pipe, the upper end of the gland is arranged inside of the fishing head, the gland and the fishing head are fixed by the releasing shear pin, an outer lock block and an inner lock block are arranged on the gland, the outer locking block and the inner locking block are pressed by a spring I to enable the tooth shape of the inner circle of the inner locking block to be meshed with the tooth shape on the central tube, a connecting sleeve is installed between a blocking cover and a boss at the end part of a gland, the lower end of the gland is connected with a setting rubber cylinder assembly, the lower end of the setting rubber cylinder assembly is connected with the upper end of an upper cone, a lower cone is arranged on the lower side of the upper cone, the upper cone and the lower cone are connected through a slip sleeve and a slip, the slip is provided with a spring II, a lower blocking cover is installed on the outer side of the lower end of the lower cone, the lower blocking cover is fixed by a screw II, and a lower joint is installed on the outer side of the lower end of the central tube.

The transition joint is in threaded connection with the inner pipe, so that the releasing pipe seat is convenient to loosen and connect when the releasing pipe seat is taken out, and the structure is simple.

The setting rubber cylinder component comprises a rubber cylinder base pipe arranged on the outer side of the central pipe, and a rubber cylinder gasket, a side rubber cylinder, a spacing pad, a middle rubber cylinder and a blocking sleeve are arranged on the outer side of the rubber cylinder base pipe and used for setting.

This novel multi-functional bridge plug packer both is the packer, and the while is the bridge plug again, still releases, can realize multiple functions, sets up transition joint 5 between top connection 1 and inner tube 12 in addition, and transition joint 5's thickness is far greater than inner tube 12 thickness to simple structure conveniently carries out thermal treatment to installation deblocking shear pin position, sets up the deblocking shear pin on transition joint, and transition joint intensity is big, can bear the power when the shear pin is cut off very well, connects reliably.

Drawings

FIG. 1 is a schematic view of the whole structure of the present invention;

FIG. 2 is an enlarged view of portion C of FIG. 1;

FIG. 3 is an enlarged view of portion D of FIG. 1;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a cross-sectional view B-B of FIG. 3;

FIG. 6 is an enlarged view of portion E of FIG. 1;

FIG. 7 is an enlarged view of portion F of FIG. 1;

wherein: 1. an upper joint; 2. locking a nut; 3. a screw I; 4. an O-shaped ring I; 5. a transition joint; 6. setting the shear pin; 7. o-shaped ring II; 8. o-shaped ring III; 9. a piston; 10. feeding a liquid cylinder; 11. fishing the head; 12. An inner tube; 13. a blocking cover; 14. an O-shaped ring IV; 15. connecting sleeves; 16. steel balls, 17 and O-shaped rings V; 18. Unsealing the shear pins; 19. an O-shaped ring VI; 20. an outer locking block; 21. a spring I; 22. an inner locking block; 23. a gland; 24. a rubber cylinder gasket; 25. an edge rubber cylinder; 26. a spacer; 27. a middle rubber cylinder; 28. a rubber cylinder seat tube; 29. A central tube; 30. a bridge plug seat tube; 31. a blocking sleeve; 32. an O-shaped ring VII; 33. an upper cone; 34. a slip sleeve; 35. slips; 36. a spring II; 37. a lower cone; 38. a screw II; 39. a lower block cover; 40. a bridge plug seat pipe sleeve; 41. releasing the shear pin; 42. and a lower joint.

Detailed Description

Referring to fig. 1, the specific embodiment of the present invention provides a novel multifunctional bridge plug packer, which mainly comprises: the device comprises an upper joint 1, a lock nut 2, a screw I3, an O-shaped ring I4, a transition joint 5, a setting shear pin 6, an O-shaped ring II 7, an O-shaped ring III 8, a piston 9, an upper hydraulic cylinder 10, a fishing head 11, an inner tube 12, a blocking cover 13, an O-shaped ring IV 14, a connecting sleeve 15, a steel ball 16, an O-shaped ring V17, a deblocking shear pin 18, an O-shaped ring VI 19, an outer locking block 20, a spring I21, an inner locking block 22, a gland 23, a rubber barrel gasket 24, a side rubber barrel 25, a spacer 26, a middle rubber barrel 27, a rubber barrel seat tube 28, a central tube 29, a bridge plug seat tube 30, a blocking sleeve 31, an O-shaped ring VII, an upper cone 33, a slip sleeve 34, a slip 35, a spring II 36, a lower cone 37, a screw II 38, a lower blocking cover 39, a bridge plug seat tube sleeve 40, a releasing shear pin 41 and a lower joint 42.

Referring to fig. 2 to 7, an upper hydraulic cylinder 10 is installed on the outer portion of the lower end of an upper connector 1, the upper hydraulic cylinder 10 is in sealing connection with the upper connector 1 through an O-shaped ring I4, the upper end of the upper hydraulic cylinder is fixed on the upper connector 1 through a lock nut 2 and is fastened through a screw I3, and a blocking cover 13 is installed at the lower end of the upper hydraulic cylinder 10. A transition joint 5 is arranged inside the lower end of an upper joint 1, an inner pipe 12 is arranged inside the lower end of the transition joint 5, a piston 9 is arranged on the outer side of the inner pipe 12 close to the transition joint, the piston 9 is fixed on the transition joint 5 through a setting shear pin 6, the outer side of the piston 9 is in sealing connection with an upper cylinder 10 through an O-shaped ring II 7, and the inner side of the piston 9 is in sealing connection with the inner pipe 12 through an O-shaped ring III 8. The fishing head 11 is arranged below the piston 9 at the outer side of the inner pipe 12, the bridge plug seat pipe 30 is arranged at the inner side of the lower end of the inner pipe 12, the inner side of the inner pipe and the bridge plug seat pipe 30 are connected in a sealing mode through an O-shaped ring VI 19, the bridge plug seat pipe sleeve 40 is arranged at the lower end of the bridge plug seat pipe, the bridge plug seat pipe sleeve 40 is fixed at the lower end of the bridge plug seat pipe through a releasing shear pin 41, the lower end of the inner pipe 12 is inserted into the central pipe 29, the central pipe 29 and the inner pipe are sealed through an O-shaped ring V17, the outer side of the upper end of the central pipe 29 is provided with a gland 23, the upper end of the gland 23 is arranged at the inner side of the fishing head 11, the gland 23 and the fishing head 11 are fixed through a releasing shear pin 18, the gland 23 is provided with an outer locking block 20 and an inner locking block 22, the outer locking block 20 and the inner locking block 22 are compressed through a spring I21 to enable the tooth-shaped inner circle of the inner locking block 22 to be meshed with the tooth-shaped tooth form on the central pipe 29, the connecting sleeve 13 and the end of the gland 23, the connecting sleeve is arranged between the inner side of the connecting sleeve 13 and the fishing head through an O-shaped ring IV-shaped ring 14, the outer locking piece 20 is externally positioned by the connecting sleeve 15. A rubber cylinder seat tube 28 is arranged below the gland 23, the rubber cylinder seat tube 28 is in sealing connection with the central tube 29 through an O-shaped ring VII 32, a setting rubber cylinder assembly is arranged on the rubber cylinder seat tube 28 and comprises a rubber cylinder gasket 24, a side rubber cylinder 25, a spacing pad 26, a middle rubber cylinder 27 and a blocking sleeve 31, the lower end of the blocking sleeve 31 is connected with the upper end of an upper cone 33, a lower cone 37 is arranged on the lower side of the upper cone, the upper cone 33 is connected with the lower cone 37 through a slip sleeve 34 and a slip 35, a spring II 36 is arranged on the slip, a lower blocking cover 39 is arranged on the outer side of the lower end of the lower cone 37, the lower blocking cover 39 is fixed through a screw II 38, and a lower joint 42 is arranged on the outer side of the lower end of the central tube 30.

Transition joint 5 installs between top connection 1 and inner tube 12, and transition joint's thickness is far greater than inner tube thickness to simple structure conveniently carries out thermal treatment, sets up the deblocking shear pin on transition joint, and transition joint intensity is big, can bear the power when the shear pin is cut off well, and the structure of packer is more stable.

The utility model discloses a theory of operation is: firstly, the novel multifunctional bridge plug packer is connected to a required position in an oil pipe column, during setting, a well is washed (both forward washing and reverse washing) firstly, then a steel ball 16 is thrown in from a well mouth, the well mouth is pressurized, hydraulic pressure pushes a piston 9 to cut off a setting shear pin 6 through a liquid outlet hole in a central pipe 29, a fishing head 11, a gland 23, a connecting sleeve 15 and a rubber sleeve seat pipe 28 are pushed to move downwards, an upper cone 33 moves downwards, the distance between the upper cone 33 and a lower cone 37 is shortened, a slip 35 is pushed to move outwards and is firmly clamped on the wall of the central pipe, a middle rubber sleeve 27 and an edge rubber sleeve 25 are compressed to be set, and after the setting is completed, a locking mechanism composed of an outer locking block 20 and an inner locking block is locked at the corresponding position of the central pipe.

When the pipe column is released, the pipe column is firstly rotated anticlockwise, the transition joint 5 is separated from the connecting thread of the inner pipe 12 through the follow-up rotation of the upper joint 1 and the transition joint 5, and then the pipe column is lifted upwards, so that the releasing can be realized.

When the rubber sleeve is unsealed, a special fishing tool is put in, the fishing head 11 is fished, the pipe column is lifted, the pipe column is continuously lifted after the unsealing shear pin 18 is cut off, and the limit of the rubber sleeve can be removed, so that the rubber sleeve is restored to realize the unsealing.

If the bridge plug seat pipe needs to be taken out, a special tool can be put in firstly, the pipe column is rotated to be connected with the threads at the upper end of the inner pipe 12, then the pipe column is lifted upwards, and the shear pin II 41 at the lower end of the bridge plug seat pipe 30 is sheared, so that the bridge plug seat pipe 30 can be taken out.

This novel multi-functional bridging plug packer both can make packer simple structure, can realize bridging plug and giving up etc. multi-functionally again and improve performance, can reduction in production cost, improvement economic benefits.

Claims

1. The utility model provides a novel multi-functional bridging plug packer which characterized in that: the hydraulic oil well pipe comprises an upper connector (1), an upper hydraulic cylinder (10) is installed outside the lower end of the upper connector (1), a blocking cover (13) is installed at the lower end of the upper hydraulic cylinder (10), a transition joint (5) is installed inside the lower end of the upper connector (1), an inner pipe (12) is installed inside the lower end of the transition joint (5), a piston (9) is installed on the outer side of the inner pipe (12) close to the transition joint, the piston (9) is fixed on the transition joint (5) through a setting shear pin (6), a fishing head (11) is installed on the outer side of the inner pipe (12), a bridge plug seat pipe (30) is installed on the inner side of the lower end of the inner pipe (12), a bridge plug seat pipe sleeve (40) is installed at the lower end of the bridge plug seat pipe (30), the bridge plug seat pipe sleeve (40) is fixed at the lower end of the bridge plug seat pipe (30) through a releasing shear pin (41), the lower end of the inner pipe (12) is inserted into a central pipe (29), a gland (23) is installed on the outer side of the upper end of the central pipe (29), the upper end of a gland (23) is arranged on the inner side of a fishing head (11), the gland (23) and the fishing head (11) are fixed through a deblocking shear pin (18), an outer locking block (20) and an inner locking block (22) are installed on the gland (23), the outer locking block (20) and the inner locking block (22) are compressed by a spring I (21) to enable the tooth profile of the inner circle of the inner locking block (22) to be meshed with the tooth profile of a central pipe (29), a connecting sleeve (15) is installed between a blocking cover (13) and a boss at the end part of the gland (23), the lower end of the gland (23) is connected with a setting rubber cylinder assembly, the upper end of an upper cone (33) is connected with the lower end of the upper cone (37), a lower cone (35) is connected between the upper cone (33) and the lower cone (37), a lower blocking cover (39) is installed on the outer side of the lower end of the lower cone (37), and a lower joint (42) is installed on the outer side of the lower end of the central pipe (29).

2. The novel multifunctional bridge plug packer of claim 1, wherein: the transition joint (5) is in threaded connection with the inner pipe (12).

3. The novel multifunctional bridge plug packer of claim 1, wherein: the setting rubber sleeve component comprises a rubber sleeve seat pipe (28) arranged on the outer side of the central pipe, and a rubber sleeve gasket (24), a side rubber sleeve (25), a spacing pad (26), a middle rubber sleeve (27) and a blocking sleeve (31) are arranged on the outer side of the rubber sleeve seat pipe (28).