CN215860058U - Coiled tubing well head - Google Patents
Coiled tubing well head Download PDFInfo
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- CN215860058U CN215860058U CN202122130727.XU CN202122130727U CN215860058U CN 215860058 U CN215860058 U CN 215860058U CN 202122130727 U CN202122130727 U CN 202122130727U CN 215860058 U CN215860058 U CN 215860058U
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- hanger
- oil pipe
- coiled tubing
- pipe hanger
- sealing
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Abstract
The utility model discloses a coiled tubing wellhead, comprising: the oil pipe hanger sealing compensation core is connected to the outside of the continuous oil pipe hanger, the inner size of the oil pipe hanger sealing compensation core is matched with the outer size of the continuous oil pipe hanger, and an elastic retainer ring is arranged between the continuous oil pipe hanger and the oil pipe hanger sealing compensation core; the sealing core-supplementing retention mechanism is connected with one side of the sealing core-supplementing of the oil pipe hanger. The coiled tubing wellhead is a feeding and taking-out tool of a coiled tubing hanger, wherein the coiled tubing hanger is composed of a rotating shaft, a connecting thread, a steel ball, a screw plug, a mouth-shaped ring and a shrinkage cylinder, the coiled tubing hanger is fed into the interior of a sealing and repairing core of the coiled tubing hanger, and then the coiled tubing hanger is fixedly installed inside the sealing and repairing core of the coiled tubing hanger by utilizing an elastic clamping ring, so that the coiled tubing hanger is convenient to disassemble and install.
Description
Technical Field
The utility model relates to the technical field of oil extraction equipment, in particular to a coiled tubing wellhead.
Background
The coiled tubing is a tubing made of low carbon alloy steel and has good flexibility, and is also called as flexible tubing, and a roll of coiled tubing is several kilometers long. The coiled tubing operation equipment has the characteristics of operation under pressure and continuous lifting, and has small volume, quick operation period and low cost.
This prior art solution also exists when in use:
1. in the traditional coiled tubing wellhead, a coiled tubing hanger and a production casing hanger are in a fixed connection relationship, so that the coiled tubing hanger is inconvenient to disassemble and assemble;
2. the traditional method for producing the casing hanger has the problems that the installation mode is not stable enough and the like;
improvements are needed to address the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a coiled tubing wellhead to solve the problems that a coiled tubing hanger and a production casing hanger of the traditional coiled tubing wellhead proposed by the background technology are in a fixed connection relationship, and the coiled tubing hanger is inconvenient to disassemble and assemble; and the traditional installation mode of producing the casing hanger is not stable enough.
In order to achieve the purpose, the utility model provides the following technical scheme: a coiled tubing wellhead comprising:
the continuous oil pipe hanger comprises a rotary flange, wherein a gland is arranged at the bottom of the rotary flange, a continuous oil pipe hanger is arranged in the gland, an oil pipe hanger sealing compensation core is connected to the outside of the continuous oil pipe hanger, the inner size of the oil pipe hanger sealing compensation core is matched with the outer size of the continuous oil pipe hanger, an elastic clamping ring is arranged between the continuous oil pipe hanger and the oil pipe hanger sealing compensation core, and the continuous oil pipe hanger is fixedly installed in the oil pipe hanger sealing compensation core by utilizing the elastic clamping ring so as to be convenient to disassemble and install the continuous oil pipe hanger;
the sealing and core-supplementing retention mechanism is characterized in that one side of a sealing and core-supplementing retention mechanism of the oil pipe hanger is connected with the sealing and core-supplementing retention mechanism, one side of the sealing and core-supplementing retention mechanism is provided with a first upper ball valve, one end of the first upper ball valve is provided with a second upper ball valve, the first upper ball valve is externally connected with a screw thread flange, and the sealing and core-supplementing retention mechanism of the oil pipe hanger is fixedly installed on the combined wellhead body through the sealing and core-supplementing retention mechanism.
Preferably, the bottom of the sealed bushing of the oil pipe hanger is provided with a production casing hanger, one side of the production casing hanger is connected with a retention mechanism of the production casing hanger, one side of the production casing hanger is connected with a threaded joint, one end of the threaded joint is connected with a pressure gauge, and one side of the pressure gauge is connected with a stop valve.
Preferably, the shut-off valve comprises:
the production casing hanger is externally connected with a composite wellhead body, and a base is arranged at the bottom of the composite wellhead body;
the pipe, base one side is connected with the pipe, and the inside top casing that has cup jointed of pipe, the inside production casing that has cup jointed of top casing to the inside coiled tubing that is provided with of production casing, utilize production casing hanger maintenance mechanism to fix on combined type well head body with production casing hanger, make the more firm of production casing hanger installation.
Preferably, the coiled tubing hanger comprises:
the connecting thread is connected to the outside of the coiled tubing hanger, and the sending and taking tool thread is connected to the inside of the coiled tubing hanger;
the guide cone is connected to the outer portion of the coiled tubing hanger, and an outer sealing ring is sleeved on the outer portion of the coiled tubing hanger.
Preferably, the coiled tubing hanger internally connected with stop screw, and the coiled tubing hanger bottom is connected with the screw thread, and the inside recess department of coiled tubing hanger is provided with the inner sealing circle, the coiled tubing outside is provided with the slips, slips external connection has the nut of screwing, coiled tubing and slips link together through the nut of screwing, utilize the inner sealing circle to the inside spacing of coiled tubing and slips and the nut of screwing of coiled tubing to the external fixation of coiled tubing, with coiled tubing vertical fixation install inside the coiled tubing hanger, be convenient for carry fluid.
Preferably, the rotating shaft is sleeved outside the coiled tubing hanger, the inner wall of the rotating shaft is connected with a fixed thread, a steel ball is arranged at a concave position inside the rotating shaft, a screw plug is arranged on one side of the steel ball, a mouth-shaped ring is sleeved at the bottom end of the coiled tubing hanger, the mouth-shaped ring is arranged inside the contraction cylinder, and the bottom end of the contraction cylinder is connected with a second guide cone.
Compared with the prior art, the utility model has the beneficial effects that: the coiled tubing hanger is fixedly arranged inside the sealing bushing of the tubing hanger by using the elastic retainer ring, so that the coiled tubing hanger is convenient to disassemble and assemble; then, the production casing hanger is fixed on the combined wellhead body by using the production casing hanger retention mechanism, so that the production casing hanger is more stably installed; and finally, the coiled tubing is vertically and fixedly arranged in the coiled tubing hanger, so that oil can be conveniently conveyed.
1. The coiled tubing wellhead is a feeding and taking-out tool of a coiled tubing hanger, wherein the coiled tubing hanger is composed of a rotating shaft, a connecting thread, a steel ball, a screw plug, a mouth-shaped ring and a shrinkage cylinder, the coiled tubing hanger is fed into the interior of a sealing and repairing core of the coiled tubing hanger, and then the coiled tubing hanger is fixedly installed inside the sealing and repairing core of the coiled tubing hanger by utilizing an elastic clamping ring, so that the coiled tubing hanger is convenient to disassemble and install.
2. According to the continuous oil pipe wellhead, the production casing hanger is fixed on the combined type wellhead body by the aid of the production casing hanger fixing mechanism, so that the production casing hanger is more stable to mount.
3. According to the coiled tubing wellhead, the inner sealing ring is used for limiting the interior of the coiled tubing and fixing the slip insert and the screwed nut to the exterior of the coiled tubing, and the coiled tubing is vertically and fixedly installed inside the coiled tubing hanger, so that oil liquid is convenient to convey.
Drawings
FIG. 1 is a schematic sectional front view of the present invention;
FIG. 2 is a schematic cross-sectional view of a coiled tubing hanger of the present invention;
FIG. 3 is a schematic view of the coiled tubing hanger running and retrieving tool connection of the present invention.
In the figure: 1. rotating the flange; 2. a gland; 3. a coiled tubing hanger; 4. the oil pipe hanger seals and mends the core; 5. an elastic collar; 6. a sealing core-repairing retention mechanism; 7. a first upper ball valve; 8. a second upper ball valve; 9. a threaded flange; 10. producing a casing hanger; 11. a production casing hanger retention mechanism; 12. a threaded joint; 13. a pressure gauge; 14. a stop valve; 15. a bottom ball valve; 16. a composite wellhead body; 17. a base; 18. a conduit; 19. a surface casing; 20. producing a sleeve; 21. a coiled tubing; 22. connecting threads; 23. delivering and taking tool threads; 24. a guide cone; 25. an outer sealing ring; 26. a limit screw; 27. a thread; 28. an inner seal ring; 29. slip teeth; 30. screwing the nut; 31. a rotating shaft; 32. fixing threads; 33. a steel ball; 34. a plug screw; 35. a mouth-shaped ring; 36. a retraction cylinder; 37. and a second guide cone.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a coiled tubing wellhead comprising:
the continuous oil pipe hanger sealing structure comprises a rotary flange 1, wherein a gland 2 is arranged at the bottom of the rotary flange 1, a continuous oil pipe hanger 3 is arranged in the gland 2, an oil pipe hanger sealing bushing 4 is connected to the outside of the continuous oil pipe hanger 3, the inner size of the oil pipe hanger sealing bushing 4 is matched with the outer size of the continuous oil pipe hanger 3, an elastic clamping ring 5 is arranged between the continuous oil pipe hanger 3 and the oil pipe hanger sealing bushing 4, and the continuous oil pipe hanger 3 is fixedly installed in the oil pipe hanger sealing bushing 4 by the elastic clamping ring 5 so as to be convenient for disassembling and installing the continuous oil pipe hanger 3; the sealing and core-supplementing retention mechanism 6 is characterized in that one side of the sealing and core-supplementing retention mechanism 6 of the oil pipe hanger is connected with the sealing and core-supplementing retention mechanism 6, one side of the sealing and core-supplementing retention mechanism 6 is provided with a first upper ball valve 7, one end of the first upper ball valve 7 is provided with a second upper ball valve 8, the first upper ball valve 7 is externally connected with a screw thread flange 9, and the sealing and core-supplementing retention mechanism 6 of the oil pipe hanger is fixedly installed on the combined type wellhead body 16.
The bottom of the oil pipe hanger sealing bushing 4 is provided with a production casing hanger 10, one side of the production casing hanger 10 is connected with a production casing hanger retention mechanism 11, one side of the production casing hanger 10 is connected with a threaded connector 12, one end of the threaded connector 12 is connected with a pressure gauge 13, and one side of the pressure gauge 13 is connected with a stop valve 14; the shutoff valve 14 includes: a bottom ball valve 15 is arranged on one side of the stop valve 14, a composite wellhead body 16 is connected to the outside of the production casing hanger 10, and a base 17 is arranged at the bottom of the composite wellhead body 16; the pipe 18, base 17 one side is connected with pipe 18, and the inside surface casing 19 that has cup jointed of pipe 18, and the inside production casing 20 that has cup jointed of surface casing 19 to the inside coiled tubing 21 that is provided with of production casing 20 will produce the casing hanger 10 and utilize production casing hanger maintenance mechanism 11 to fix on combined type well head body 16, make the more firm of production casing hanger 10 installation.
The coiled tubing hanger 3 includes: the connecting thread 22 is connected, the connecting thread 22 is connected to the exterior of the coiled tubing hanger 3, and the sending and taking tool thread 23 is connected to the interior of the coiled tubing hanger 3; the continuous oil pipe hanger comprises a guide cone 24, wherein the guide cone 24 is connected to the outer part of the continuous oil pipe hanger 3, and an outer sealing ring 25 is sleeved on the outer part of the continuous oil pipe hanger 3; the interior of the coiled tubing hanger 3 is connected with a limit screw 26, the bottom end of the coiled tubing hanger 3 is connected with a thread 27, an inner sealing ring 28 is arranged at a groove in the coiled tubing hanger 3, a slip insert 29 is arranged outside the coiled tubing 21, a screwing nut 30 is connected outside the slip insert 29, the coiled tubing 21 and the slip insert 29 are connected together through the screwing nut 30, the interior of the coiled tubing 21 is limited by the inner sealing ring 28 and the exterior of the coiled tubing 21 is fixed by the slip insert 29 and the screwing nut 30, the coiled tubing 21 is vertically and fixedly arranged in the coiled tubing hanger 3 so as to be convenient for oil conveying, a rotating shaft 31 is sleeved outside the coiled tubing hanger 3, the inner wall of the rotating shaft 31 is connected with a fixed thread 32, a steel ball 33 is arranged at a concave part in the rotating shaft 31, a plug 34 is arranged on one side of the steel ball 33, a mouth ring 35 is sleeved at the bottom end of the coiled tubing hanger 3, the shrinking cylinder 36 is internally provided with a mouth ring 35, and the bottom end of the shrinking cylinder 36 is connected with a second guide cone 37.
In summary, the following steps: when the continuous oil pipe wellhead is used, firstly, the continuous oil pipe hanger 3 is fixedly arranged inside the oil pipe hanger sealing compensation core 4 by using the elastic clamping ring 5, so that the continuous oil pipe hanger 3 is convenient to disassemble and assemble; then the production casing hanger 10 is fixed on the composite wellhead body 16 by the production casing hanger retention mechanism 11, so that the production casing hanger 10 is more stably installed; finally, the coiled tubing 21 is vertically and fixedly installed inside the coiled tubing hanger 3 for facilitating the transportation of oil, which is a characteristic of the coiled tubing wellhead, and the contents not described in detail in this specification belong to the prior art well known to those skilled in the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (6)
1. A coiled tubing wellhead, comprising:
the continuous oil pipe hanger comprises a rotary flange (1), wherein a gland (2) is arranged at the bottom of the rotary flange (1), a continuous oil pipe hanger (3) is arranged inside the gland (2), an oil pipe hanger sealing bushing (4) is connected to the outside of the continuous oil pipe hanger (3), the inner size of the oil pipe hanger sealing bushing (4) is matched with the outer size of the continuous oil pipe hanger (3), and an elastic collar (5) is arranged between the continuous oil pipe hanger (3) and the oil pipe hanger sealing bushing (4);
the sealing and core-supplementing retention mechanism (6), one side of the sealing and core-supplementing retention mechanism (4) of the oil pipe hanger is connected with the sealing and core-supplementing retention mechanism (6), one side of the sealing and core-supplementing retention mechanism (6) is provided with a first upper ball valve (7), one end of the first upper ball valve (7) is provided with a second upper ball valve (8), the first upper ball valve (7) is externally connected with a screw thread flange (9), and the sealing and core-supplementing retention mechanism (6) of the oil pipe hanger is fixedly installed on the combined wellhead body (16).
2. The coiled tubing wellhead as claimed in claim 1, wherein: the production casing hanger is arranged at the bottom of the oil pipe hanger sealing bushing (4), a production casing hanger (10) is connected to one side of the production casing hanger (10) through a production casing hanger retention mechanism (11), a threaded connector (12) is connected to one side of the production casing hanger (10), a pressure gauge (13) is connected to one end of the threaded connector (12), and a stop valve (14) is connected to one side of the pressure gauge (13).
3. The coiled tubing wellhead as claimed in claim 2, wherein: the shut-off valve (14) comprises:
the production casing hanger comprises a bottom ball valve (15), wherein the bottom ball valve (15) is arranged on one side of a stop valve (14), a composite wellhead body (16) is connected to the outside of the production casing hanger (10), and a base (17) is arranged at the bottom of the composite wellhead body (16);
the pipe (18), base (17) one side is connected with pipe (18), and pipe (18) inside cup joints surface casing pipe (19), and inside production sleeve pipe (20) of cup jointing of surface casing pipe (19) to production sleeve pipe (20) inside is provided with coiled tubing (21).
4. The coiled tubing wellhead as claimed in claim 1, wherein: the coiled tubing hanger (3) comprising:
the connecting thread (22) is connected with the exterior of the continuous oil pipe hanger (3), and the sending and taking tool thread (23) is connected with the interior of the continuous oil pipe hanger (3);
the guide cone (24) is connected to the outer portion of the continuous oil pipe hanger (3), and the outer sealing ring (25) is sleeved on the outer portion of the continuous oil pipe hanger (3).
5. The coiled tubing wellhead as claimed in claim 1, wherein: the continuous oil pipe hanger is characterized in that a limiting screw (26) is connected to the inner portion of the continuous oil pipe hanger (3), threads (27) are connected to the bottom end of the continuous oil pipe hanger (3), an inner sealing ring (28) is arranged at the position of a groove in the continuous oil pipe hanger (3), slip teeth (29) are arranged on the outer portion of the continuous oil pipe hanger (21), a screwing nut (30) is connected to the outer portion of the slip teeth (29), and the continuous oil pipe hanger (3) and the slip teeth (29) are connected together through the screwing nut (30).
6. The coiled tubing wellhead as claimed in claim 1, wherein: the continuous oil pipe hanger is characterized in that a rotating shaft (31) is sleeved outside the continuous oil pipe hanger (3), a fixed thread (32) is connected to the inner wall of the rotating shaft (31), a steel ball (33) is arranged at a concave position inside the rotating shaft (31), a screw plug (34) is arranged on one side of the steel ball (33), an opening ring (35) is sleeved at the bottom end of the continuous oil pipe hanger (3), the opening ring (35) is arranged inside a contraction cylinder (36), and a second guide cone (37) is connected to the bottom end of the contraction cylinder (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122130727.XU CN215860058U (en) | 2021-09-06 | 2021-09-06 | Coiled tubing well head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122130727.XU CN215860058U (en) | 2021-09-06 | 2021-09-06 | Coiled tubing well head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215860058U true CN215860058U (en) | 2022-02-18 |
Family
ID=80246594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122130727.XU Active CN215860058U (en) | 2021-09-06 | 2021-09-06 | Coiled tubing well head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215860058U (en) |
-
2021
- 2021-09-06 CN CN202122130727.XU patent/CN215860058U/en active Active
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