CN213953563U - Integral bridge plug capable of being filled with cement plug - Google Patents
Integral bridge plug capable of being filled with cement plug Download PDFInfo
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- CN213953563U CN213953563U CN202121654096.5U CN202121654096U CN213953563U CN 213953563 U CN213953563 U CN 213953563U CN 202121654096 U CN202121654096 U CN 202121654096U CN 213953563 U CN213953563 U CN 213953563U
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Abstract
The utility model discloses a groutable cement plug integrated bridge plug, which relates to the technical field of oilfield downhole equipment, and comprises an internal tool and an external pipe column, wherein the internal tool comprises a central rod, a sliding sleeve, a plugging shaft, a steel ball and a ball seat, the central rod, the sliding sleeve and the plugging shaft are sequentially and fixedly connected end to end from top to bottom, the ball seat is fixedly arranged at the upper part of the inner cavity of the sliding sleeve through a shearing pin, and the steel ball is placed on the ball seat; the outer pipe column comprises a central pipe, a base, a rubber sleeve, a lower base, an outer cylinder, a lock ring, a sliding sleeve outer cylinder and a lower joint, the central pipe is sleeved on the outer side of the central rod in a sliding mode, and an upper ratchet is arranged on the lower portion of the outer wall of the central pipe; the lower end of the inner wall of the lower base is provided with an annular groove, the lock ring is arranged in the annular groove, the inner wall of the lock ring is meshed and matched with the upper ratchet, the rubber cylinder is sleeved on a central pipe between the base and the lower base, and a shearing ring is arranged between the outer cylinder of the sliding sleeve and the sliding sleeve; the device combines the bridge plug and the cementing pipe column into a whole, simplifies the construction steps and effectively improves the operating efficiency of the cementing plug.
Description
Technical Field
The utility model relates to an oil field equipment technical field in the pit, concretely relates to can annotate cement stopper integral type bridging plug.
Background
Cementing plugs in downhole operations is one of the commonly used process techniques. The purpose and the application of the cementing plug are mainly as follows: (1) sealing a new layer of tested oil on the tested oil layer, or plugging a non-target layer during layering operation; (2) closing the bottom water layer; (3) plugging, channeling, pressure test of the upper casing and the like are found out to separate and seal a certain interval; (4) blocking the waste well and backfilling a depleted layer; (5) closed horizons for safety purposes (e.g. closed high pressure layers, toxic hazardous fluid layers); (6) plugging in special cases.
During construction, a cement injection pipe column connected with a bridge plug is lowered to a designed position, and cement is squeezed in through the cement injection pipe column after the bridge plug is set; the existing construction equipment has a complex structure, a long underground tool string and relatively low working efficiency.
Therefore, it is urgently needed to develop a simple integrated cement injection plug device.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can annotate cement stopper integral type bridging plug to the defect that prior art exists exactly.
The technical scheme of the utility model is that: the integral bridge plug capable of being injected with the cement plug comprises an internal tool and an external pipe column, wherein the internal tool comprises a central rod, a sliding sleeve, a plugging shaft, a steel ball and a ball seat, the central rod, the sliding sleeve and the plugging shaft are sequentially and fixedly connected end to end from top to bottom, the plugging shaft is a solid body, and an external step seat is arranged at the lower end of the plugging shaft; the ball seat is fixedly arranged at the upper part of the inner cavity of the sliding sleeve through a shearing pin, and the steel ball is placed on the ball seat;
the outer pipe column comprises a central pipe, a base, a rubber sleeve, a lower base, an outer cylinder, a lock ring, a sliding sleeve outer cylinder and a lower joint, the central pipe is slidably sleeved on the outer side of the central rod, and the lower part of the outer wall of the central pipe is provided with an upper ratchet which inclines upwards; the base is fixedly arranged at the upper end of the outer wall of the central tube, the lower base is fixedly connected with the outer tube and sleeved on the central tube, the upper part of the inner wall of the lower base is slidably connected with the central tube, and the lower part of the inner wall of the outer tube is slidably connected with the central rod and the sliding sleeve; the lower end of the inner wall of the lower base is provided with an annular groove, the locking ring is arranged in the annular groove, the inner wall of the locking ring is meshed and matched with the upper ratchet, the rubber cylinder is sleeved on a central pipe between the base and the lower base, and two ends of the rubber cylinder are provided with protective umbrellas; the sliding sleeve outer barrel is slidably sleeved on the central rod, the sliding sleeve and the blocking shaft, the upper end of the sliding sleeve outer barrel is fixedly connected with the outer barrel, and the lower end of the sliding sleeve outer barrel is fixedly connected with the lower joint; the inner edge of the lower end of the sliding sleeve outer cylinder corresponds to the step seat outside the blocking shaft, and a shearing ring is arranged between the sliding sleeve outer cylinder and the sliding sleeve; the pipe wall of the sliding sleeve is provided with a through hole, the pipe wall of the outer barrel of the sliding sleeve is provided with a filling hole, and the inner wall of the outer barrel of the sliding sleeve is provided with an annular flow passage communicated with the through hole and the filling hole; and the pipe wall of the lower part of the sliding sleeve is provided with a weak point convenient for breaking.
Preferably, the lower end of the blocking shaft is provided with a locking claw, the outer wall of the locking claw is provided with a downward inclined lower ratchet, and the inner wall of the lower joint is provided with a latch matched with the lower ratchet; when the step seat outside the blocking shaft is contacted with the inner edge of the lower end of the outer cylinder of the sliding sleeve, the lower ratchet is meshed with the clamping teeth.
Preferably, the upper end and the lower end of the rubber cylinder are provided with outer conical surfaces, the protective umbrella is sleeved on the outer conical surfaces, and the protective umbrella support is sleeved on the outer side of the protective umbrella.
Preferably, a slip seat and a cone are arranged between the base and the rubber cylinder, the cone is in sliding connection with the central tube, and the lower portion of the inner wall of the slip seat is matched with the upper portion of the outer wall of the cone through a conical surface.
Preferably, sealing rings are arranged at the sliding connection position of the lower base and the central pipe, on the inner wall of the sliding sleeve outer barrel on the upper side and the lower side of the annular flow passage and on the outer wall of the ball seat.
Preferably, the sealing ring is an O-ring.
Compared with the prior art, the utility model, have following advantage:
the device combines the bridge plug and the cementing pipe column into a whole, simplifies the construction steps and effectively improves the operating efficiency of the cementing plug; the device has simple structure, convenient operation and strong practicability; this device is set and is sealed the success rate high, and the ratchet is mutually supported on catch and the center tube after setting, and then has effectively promoted the setting reliability of this device.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged schematic view of a point a in fig. 1.
In the figure: 1. the device comprises a central rod, 2, a central pipe, 201, an upper ratchet, 3, a base, 4, a slip seat, 5, a cone, 6, a protective umbrella support, 7, a protective umbrella, 8, a rubber sleeve, 9, a sealing ring, 10, a lower base, 11, a locking ring, 12, an outer cylinder, 13, a steel ball, 14, a shearing pin, 15, a ball seat, 16, a shearing ring, 17, a sliding sleeve, 1701, a through hole, 18, a sliding sleeve outer cylinder, 1801, a filling hole, 1802, an annular flow passage, 19, a blocking shaft, 1901, an outer step seat, 20, a locking claw, 2001, a lower ratchet, 21, a lower joint, 2101 and a clamping tooth.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example one
Referring to fig. 1-2, the integral bridge plug capable of being filled with cement comprises an internal tool and an external pipe column, wherein the internal tool comprises a central rod 1, a sliding sleeve 17, a blocking shaft 19, a steel ball 13 and a ball seat 15, the central rod 1, the sliding sleeve 17 and the blocking shaft 19 are sequentially fixedly connected end to end from top to bottom, the blocking shaft 19 is a solid body, and the lower end of the blocking shaft is provided with an outer step seat 1901; the ball seat 15 is fixedly arranged at the upper part of the inner cavity of the sliding sleeve 17 through a shearing pin 14, and the steel ball 13 is placed on the ball seat 15;
the outer pipe column comprises a central pipe 2, a base 3, a rubber sleeve 8, a lower base 10, an outer cylinder 12, a locking ring 11, a sliding sleeve outer cylinder 18 and a lower joint 21, the central pipe 2 is slidably sleeved on the outer side of the central rod 1, and the lower part of the outer wall of the central pipe 2 is provided with an upper ratchet 201 which inclines upwards; the base 3 is fixedly arranged at the upper end of the outer wall of the central tube 2, the lower base 10 and the outer tube 12 are fixedly connected and sleeved on the central tube 2, the upper part of the inner wall of the lower base 10 is slidably connected with the central tube 2, and the lower part of the inner wall of the outer tube 12 is slidably connected with the central rod 1 and the sliding sleeve 17; the lower end of the inner wall of the lower base 10 is provided with an annular groove, the lock ring 11 is arranged in the annular groove, the inner wall of the lock ring is meshed and matched with the upper ratchet 201, the rubber cylinder 8 is sleeved on the central tube 2 between the base 3 and the lower base 10, and two ends of the rubber cylinder 8 are provided with protective umbrellas 7; the sliding sleeve outer barrel 18 is slidably sleeved on the central rod 1, the sliding sleeve 17 and the blocking shaft 19, the upper end of the sliding sleeve outer barrel is fixedly connected with the outer barrel 12, and the lower end of the sliding sleeve outer barrel is fixedly connected with the lower joint 21; the inner edge of the lower end of the sliding sleeve outer cylinder 18 corresponds to the outer step seat 1901 of the blocking shaft 19, and a shearing ring 16 is arranged between the sliding sleeve outer cylinder 18 and the sliding sleeve 17; a through hole 1701 is formed in the pipe wall of the sliding sleeve 17, a filling hole 1801 is formed in the pipe wall of the outer sliding sleeve barrel 18, and an annular flow passage 1802 communicated with the through hole 1701 and the filling hole 1801 is formed in the inner wall of the outer sliding sleeve barrel 18; the lower pipe wall of the sliding sleeve 17 is provided with a weak point which is convenient for breaking.
More specifically, in order to improve the sealing performance of the device, sealing rings 9 are arranged on the sliding connection part of the lower base 10 and the central pipe 2, the inner walls of the sliding sleeve outer cylinders 18 on the upper side and the lower side of the annular flow passage 1802 and the outer wall of the ball seat 15, and the sealing rings 9 are O-shaped sealing rings 9.
When in use, the pipe column is lowered to a specified position in a well, and in the first step, the bridge plug is set: firstly, starting an underground hydraulic cylinder to press a central pipe 2, pulling a central rod 1 upwards by a piston of the hydraulic cylinder, and enabling the central rod 1 and the central pipe 2 to generate relative motion; the central rod 1 drives the lower base 10 to extrude the rubber cylinder 8 to expand to complete setting, when the extrusion force reaches a certain numerical value, the shearing ring 16 is disconnected, and at the moment, under the locking action of the locking ring 11, the lower base 10 cannot return, so that the rubber cylinder 8 is always in a setting state; secondly, injecting cement slurry: introducing high-pressure liquid into the central rod 1 until the shear pin 14 is disconnected, so that the steel ball 13 and the ball seat 15 slide down to realize oil jacket communication; cement slurry is injected downwards through the center rod 1, and the cement slurry flows through the through hole 1701, the annular flow channel 1802 and the filling hole 1801 in sequence and enters the air of the oil jacket ring; after grouting, the central rod 1 is lifted upwards, and the central rod 1 drives the blocking shaft 19 to move upwards to block the filling hole 1801; and continuously lifting the sliding sleeve 17 to break from the weak point, and starting internal tools such as the central rod 1, the sliding sleeve 17, the ball seat 15 and the like.
The device combines the bridge plug and the cementing pipe column into a whole, simplifies the construction steps and effectively improves the operating efficiency of the cementing plug; the device has simple structure, convenient operation and strong practicability; this device is set and is sealed the success rate height, and the ratchet 201 is mutually supported on catch 11 and the center tube 2 after setting, and then has effectively promoted the setting reliability of this device.
Example two
As an embodiment of the present invention, the anti-moving mechanism is added to the present embodiment on the basis of the first embodiment, specifically:
in the embodiment, a locking claw 20 is arranged at the lower end of a blocking shaft 19, a downward inclined lower ratchet 2001 is arranged on the outer wall of the locking claw 20, and a latch 2101 matched with the lower ratchet 2001 is arranged on the inner wall of a lower joint 21; after grouting is finished, the central rod 1 is lifted upwards, the central rod 1 drives the blocking shaft 19 to move upwards to block the filling hole 1801, and when the outer step seat 1901 of the blocking shaft 19 is contacted with the inner edge of the lower end of the sliding sleeve outer cylinder 18, the lower ratchet 2001 is meshed with the latch 2101, so that the blocking shaft 19 cannot retract and the filling hole 1801 is always blocked.
EXAMPLE III
As an preferred embodiment of the present invention, this embodiment optimizes the structure of the packing element 8 and adds the slip seat 4 and the cone 5 on the basis of the second embodiment, specifically:
the upper end and the lower end of the rubber cylinder 8 are provided with outer conical surfaces, the protective umbrella 7 is sleeved on the outer conical surfaces, and the protective umbrella support 6 is sleeved on the outer side of the protective umbrella 7; when the seat is sealed, the protective umbrella 7 and the protective umbrella support 6 clamp the outer conical surfaces at two ends of the rubber cylinder 8 to extrude the rubber cylinder 8, so that the reliability of the seat is further improved.
A slip seat 4 and a cone 5 are arranged between the base 3 and the rubber cylinder 8, the cone 5 is connected with the central tube 2 in a sliding way, and the lower part of the inner wall of the slip seat 4 is matched with the upper part of the outer wall of the cone 5 through a conical surface; when the setting is carried out, the lower base 10 upwards extrudes the rubber tube 8, the protective umbrella support 6 above the rubber tube 8 is driven to upwards push the cone 5, the cone 5 upwards slides to expand the slip seat 4, so that the slip seat 4 clamps the inner wall of the sleeve, stable supporting force is provided for extruding the rubber tube 8, and the setting success rate is further improved.
The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge range of those skilled in the art without departing from the spirit of the present invention, and the changed contents still belong to the protection scope of the present invention.
Claims (6)
1. The utility model provides a can annotate cement stopper integral type bridging plug which characterized in that: the pipe column comprises an internal tool and an external pipe column, wherein the internal tool comprises a central rod, a sliding sleeve, a blocking shaft, a steel ball and a ball seat, the central rod, the sliding sleeve and the blocking shaft are sequentially fixedly connected end to end from top to bottom, the blocking shaft is a solid body, and an external step seat is arranged at the lower end of the blocking shaft; the ball seat is fixedly arranged at the upper part of the inner cavity of the sliding sleeve through a shearing pin, and the steel ball is placed on the ball seat;
the outer pipe column comprises a central pipe, a base, a rubber sleeve, a lower base, an outer cylinder, a lock ring, a sliding sleeve outer cylinder and a lower joint, the central pipe is slidably sleeved on the outer side of the central rod, and the lower part of the outer wall of the central pipe is provided with an upper ratchet which inclines upwards; the base is fixedly arranged at the upper end of the outer wall of the central tube, the lower base is fixedly connected with the outer tube and sleeved on the central tube, the upper part of the inner wall of the lower base is slidably connected with the central tube, and the lower part of the inner wall of the outer tube is slidably connected with the central rod and the sliding sleeve; the lower end of the inner wall of the lower base is provided with an annular groove, the locking ring is arranged in the annular groove, the inner wall of the locking ring is meshed and matched with the upper ratchet, the rubber cylinder is sleeved on a central pipe between the base and the lower base, and two ends of the rubber cylinder are provided with protective umbrellas; the sliding sleeve outer barrel is slidably sleeved on the central rod, the sliding sleeve and the blocking shaft, the upper end of the sliding sleeve outer barrel is fixedly connected with the outer barrel, and the lower end of the sliding sleeve outer barrel is fixedly connected with the lower joint; the inner edge of the lower end of the sliding sleeve outer cylinder corresponds to the step seat outside the blocking shaft, and a shearing ring is arranged between the sliding sleeve outer cylinder and the sliding sleeve; the pipe wall of the sliding sleeve is provided with a through hole, the pipe wall of the outer barrel of the sliding sleeve is provided with a filling hole, and the inner wall of the outer barrel of the sliding sleeve is provided with an annular flow passage communicated with the through hole and the filling hole; and the pipe wall of the lower part of the sliding sleeve is provided with a weak point convenient for breaking.
2. A cement-injectable plug integrated bridge plug as claimed in claim 1, wherein: the lower end of the blocking shaft is provided with a locking claw, the outer wall of the locking claw is provided with a downward inclined lower ratchet, and the inner wall of the lower joint is provided with a latch matched with the lower ratchet; when the step seat outside the blocking shaft is contacted with the inner edge of the lower end of the outer cylinder of the sliding sleeve, the lower ratchet is meshed with the clamping teeth.
3. A cement-injectable plug integrated bridge plug as claimed in claim 1, wherein: the upper end and the lower end of the rubber cylinder are provided with outer conical surfaces, the protective umbrella is sleeved on the outer conical surfaces, and a protective umbrella support is sleeved on the outer side of the protective umbrella.
4. A cement-injectable plug integrated bridge plug as claimed in claim 1, wherein: the rubber tube sealing device is characterized in that a slip seat and a cone are arranged between the base and the rubber tube, the cone is connected with the central tube in a sliding mode, and the lower portion of the inner wall of the slip seat is matched with the upper portion of the outer wall of the cone through a conical surface.
5. A cement-injectable plug integrated bridge plug as claimed in claim 1, wherein: and sealing rings are arranged at the sliding connection part of the lower base and the central pipe, on the inner wall of the sliding sleeve outer barrel at the upper side and the lower side of the annular flow passage and on the outer wall of the ball seat.
6. A cement-groutable plug integrated bridge plug as claimed in claim 5, wherein: the sealing ring is an O-shaped sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121654096.5U CN213953563U (en) | 2021-07-21 | 2021-07-21 | Integral bridge plug capable of being filled with cement plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121654096.5U CN213953563U (en) | 2021-07-21 | 2021-07-21 | Integral bridge plug capable of being filled with cement plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213953563U true CN213953563U (en) | 2021-08-13 |
Family
ID=77198576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121654096.5U Active CN213953563U (en) | 2021-07-21 | 2021-07-21 | Integral bridge plug capable of being filled with cement plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213953563U (en) |
-
2021
- 2021-07-21 CN CN202121654096.5U patent/CN213953563U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Integrated bridge plug capable of injecting cement plug Effective date of registration: 20220420 Granted publication date: 20210813 Pledgee: Dongying Branch of Qilu Bank Co.,Ltd. Pledgor: DONGYING ZHAOXIN INDUSTRY AND TRADE CO.,LTD. Registration number: Y2022980004456 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230424 Granted publication date: 20210813 Pledgee: Dongying Branch of Qilu Bank Co.,Ltd. Pledgor: DONGYING ZHAOXIN INDUSTRY AND TRADE CO.,LTD. Registration number: Y2022980004456 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An integrated bridge plug that can be grouted with cement Effective date of registration: 20230425 Granted publication date: 20210813 Pledgee: Dongying Branch of Qilu Bank Co.,Ltd. Pledgor: DONGYING ZHAOXIN INDUSTRY AND TRADE CO.,LTD. Registration number: Y2023980039141 |