CN215292438U - Recyclable oil pipe bridge plug - Google Patents
Recyclable oil pipe bridge plug Download PDFInfo
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- CN215292438U CN215292438U CN202022440145.7U CN202022440145U CN215292438U CN 215292438 U CN215292438 U CN 215292438U CN 202022440145 U CN202022440145 U CN 202022440145U CN 215292438 U CN215292438 U CN 215292438U
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- bridge plug
- oil pipe
- sleeve
- plug
- rubber cylinder
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Abstract
The utility model relates to a but recovery type oil pipe bridging plug belongs to oil field well workover technical field. The recyclable oil pipe bridge plug comprises a fishing head, a connecting rod, a lock sleeve, a deblocking pull rod, a sealing rubber cylinder sleeved on a central pipe, a baffle ring, a slip, an upper cone, a lower cone, a balance joint and a guide head. The principle of the method is that a bridge plug setting tool and a bridge plug are conveyed to a preset position of an oil pipe by a cable or a steel wire, a bridge plug locking sleeve is pushed to move downwards by thrust generated by the bridge plug setting tool, pressure is transmitted to a slip, the slip is expanded and anchored on the inner wall of the oil pipe, the locking sleeve continues to move downwards to extrude a rubber sleeve to generate deformation to be tightly attached to the inner wall of the oil pipe to realize sealing, the bridge plug separates the oil pipe from top to bottom after setting, oil pipe plugging is realized, and falling objects are not required to be generated by ball throwing.
Description
Technical Field
The utility model belongs to the technical field of the oil field well workover, a shutoff instrument in oil gas well is related to, concretely relates to but recovery type oil pipe bridging plug.
Background
The oil pipe bridge plug is an underground tool for completing oil pipe plugging operation of an oil-gas well, and mainly has the following functions: the special bridge plug setting tool and the oil pipe bridge plug are conveyed to a preset position of an oil pipe by a cable or a steel wire, a setting force generated by the setting tool pushes a bridge plug locking sleeve to move downwards, pressure is transmitted to a slip, the slip is propped open and anchored on the inner wall of the oil pipe, the locking sleeve continues to move downwards to extrude a rubber sleeve to generate radial expansion, the rubber sleeve is tightly attached to the inner wall of the oil pipe to realize sealing, and therefore bridge plug setting is completed, the bridge plug separates the oil pipe from top to bottom after setting, and oil pipe plugging is realized.
Chinese patent application 201410324096.7 discloses an oil pipe bridge plug for sealing and isolating pressure and fluid in upper and lower spaces inside an oil pipe to realize tree-hanging operation for replacement under pressure. The bridge plug mainly comprises a sealing structure and a setting releasing mechanism. The invention discloses a new tool capable of sealing the upper and lower spaces in the oil pipe under pressure, which can realize the operation of replacing the hanging of an oil extraction tree under pressure without killing a well, effectively shorten the operation period, reduce the operation cost, reduce the influence of the operation on the stratum and realize the maximum working pressure difference of 35 MPa.
The Chinese patent application 201420802121.3 discloses an oil pipe bridge plug, which comprises a bridge plug body and a dissolvable bridge plug piece positioned in the bridge plug body; the dissolvable bridge plug piece is arranged in the bridge plug body and used for plugging the central tube of the bridge plug body. The utility model discloses a tubing bridge plug, because the shutoff the dissolvable bridge plug of bridge plug body center tube is dissolvable, so when needs are relieved the bridge plug, do not need extra process to bore the bridge plug specially and get in order to relieve the bridge plug to can shorten construction cycle, raise the efficiency.
When the main valve of the Christmas tree No. 1 is abnormally closed and needs to be replaced under pressure, the conventional oil pipe blocking valve is difficult to operate and can only be replaced after killing the well. The recoverable oil pipe bridge plug can be pressed under pressure under the condition of no killing to realize oil pipe plugging, and an abnormal valve or a well mouth is replaced. The ball seat that packer was suppressed and is set and use can form the junk in the pit shaft after hitting, probably influences later stage production operation, especially uses the open hole to support the oil gas well of well completion technology, and the junk probably blocks up the passageway at the stay tube top, perhaps when the ball seat appears hitting unusually in advance, thereby can drop into oil pipe bridging plug and suppress to the packer lower part and accomplish packer and set thereby realize that the packer does not have the junk and sets up or the remedy that the ball seat unusually hit. And similarly, when the completion pipe string is communicated with the oil sleeve, the oil pipe bridge plug is lowered to a position below the suspected leak point of the pipe string for positive pressing, so that the position of the leak point of the pipe string can be determined, and a basis is provided for later measures.
Therefore, there is a need to develop a tubing bridge plug that can be run in and set in the tubing at wellhead pressure.
SUMMERY OF THE UTILITY MODEL
Based on prior art not enough, the utility model aims to provide a can take the oil pipe bridging plug of going into and setting in oil pipe under the condition at the well head area, oil pipe bridging plug realize the sealing of tubular column after setting, same oil pipe bridging plug can be through suppressing to the predetermined value with the end cap beat the realization bridging plug about pressure balance, also can follow the special fishing tool of income directly retrieve the bridging plug deblocking through lifting.
The purpose of the utility model is realized like this: the utility model provides a recoverable oil pipe bridging plug, recoverable oil pipe bridging plug include fishing head, O type sealing washer, back of the body circle, holding screw, connecting rod, deblocking pull rod, lock cover, pin, catch ring, fender ring, go up and press the cap, packing element, spacer ring, packing element bush, press the cap down, go up the cone, sit and seal the adapter sleeve, slip cover, slips pressure spring, release claw, lower cone, mandrel, end cap, balanced joint and direction head.
The fishing head is used for being connected with a fishing tool during unsealing; the connecting rod is directly connected with the setting tool;
the lower part of the fishing head is connected with the deblocking pull rod through a set screw, and the lower part of the deblocking pull rod is connected with the mandrel;
the outside of the deblocking pull rod is connected with the rubber cylinder lining through a pin, and the connecting rod is sleeved outside the rubber cylinder lining and connected through a set screw;
the upper part of the lock sleeve is connected with the connecting rod, the lock sleeve is sleeved outside the rubber cylinder bushing, and the lock ring and the baffle ring are positioned between the lock sleeve and the rubber cylinder bushing to prevent the lock sleeve from moving upwards after moving downwards;
the rubber cylinder is connected between the upper pressing cap and the lower pressing cap and sleeved outside the rubber cylinder lining, and the double rubber cylinders are separated by the spacer ring;
the lower part of the lower pressing cap is connected with the upper cone, the setting connecting sleeve is positioned between the upper cone and the rubber cylinder bushing, the outer part of the setting connecting sleeve is connected with the upper cone through a pin, and the rubber cylinder bushing and the release claw are connected together through threads in the setting connecting sleeve;
the lower end of the upper cone is positioned in the slip assembly, and the lower cone is sleeved outside the release claw;
a balance joint is connected below the lower cone, and the lower part of the lower cone is connected with the balance joint through a set screw;
the lower part of the balance joint is connected with the guide head through a set screw;
the plug is connected inside the balance joint through a pin, is positioned at the upper part of the circulation hole of the balance joint and seals the channel in the pipe before deblocking.
In the working process, the connecting rod of the bridge plug is connected with the setting tool through the pin, the setting force generated by the setting tool is transmitted to the connecting rod, and the lock sleeve moves downwards to push the bridge plug to complete setting.
The recyclable oil pipe bridge plug comprises an unsealing pull rod, a rubber sleeve lining, a lock sleeve, a sealing rubber sleeve, an upper pressing cap, a lower pressing cap, a slip, an upper cone, a lower cone and a balance joint. The fishing head is used for being connected with a fishing tool during deblocking, the connecting rod can be directly connected with a setting tool, the lock sleeve pushes the rubber sleeve sealing piece to move downwards, and the ratchet on the lock ring can prevent the lock sleeve from moving upwards after moving downwards and prevent the rubber sleeve from retracting. The setting connecting sleeve is connected with the rubber sleeve bushing and the release claw, the connecting sleeve is connected with the upper cone through a pin, the pin is cut off during setting, the upper cone moves downwards to push the slip, the slip sleeve moves downwards to be seated on the balance joint, and the slip is propped and inlaid on the inner wall of the oil pipe. The plug is connected to the balance joint and plugs the bridge plug inner pipe during setting.
In some preferred embodiments, back rings are added at two ends of the O-shaped ring to provide support for the rubber ring, prevent the rubber ring from deforming and improve the sealing capability of the O-shaped ring.
In some preferred embodiments, the upper end and the lower end of the rubber cylinder are respectively sleeved with an upper pressing cap and a lower pressing cap to support the rubber cylinder, so as to prevent the rubber cylinder from deforming under the conditions of high temperature, high pressure and uneven stress.
In some preferred embodiments, the setting connecting sleeve is used for connecting the rubber sleeve bushing and the release claw, and the setting connecting sleeve can limit the stroke of the rubber sleeve pressing the cap down to be used as a stop ring of the support sleeve in addition to the connection function on the setting structure.
In some preferred embodiments, the plug plays a role of sealing a channel in the pipe during setting, when the pipe is unsealed, a fishing tool is used for butting the fishing barrel, the pressure is positive in the oil pipe, the pressure cuts the shear pin on the plug, the plug falls to expose the circulating hole, the pressure on the bridge plug rubber barrel is balanced, and then the plug is lifted upwards for unsealing. The upper circulation hole of the balanced connector can avoid the phenomenon that the cable is damaged by excessive upper jacking force or excessive lower jacking force during deblocking, so that fish falls.
In some preferred embodiments, the deblocking pull rod is connected with the rubber sleeve bushing through a pin, the pin is sheared by lifting when deblocking is performed, the deblocking pull rod drives the mandrel to move upwards, the mandrel releases the restraint on the release claw, the release claw retracts, the lower cone moves downwards to recover the slips, the rubber sleeve is deblocked by the release bridge plug, and the rubber sleeve is lifted continuously to complete bridge plug recovery.
Compared with the prior art, the invention has the beneficial effects that:
the problem of can't going into oil pipe plugging valve under the well head area pressure condition can be solved to this application, and shutoff oil pipe can realize that sleeve pipe hydraulic pressure packer carries out the secondary and makes and seal, and accessible fishing tool retrieves, and protection pit shaft integrality has improved the once success rate of well completion, has solved well control risk problem.
Drawings
FIG. 1 is a schematic diagram of a recoverable oil pipe bridge plug structure;
FIG. 2 is a schematic view of a portion of a retrievable tubing bridge plug configuration A;
FIG. 3 is a schematic view of a portion B of a retrievable tubing bridge plug configuration;
FIG. 4 is a schematic view of a portion of a retrievable tubing bridge plug configuration C;
FIG. 5 is a schematic view of a portion of a retrievable tubing bridge plug configuration D;
reference numerals: 1-fishing head, A1-first O-shaped sealing ring, A2-set screw, 2-connecting rod, 3-locking sleeve, 4-unsealing pull rod, B1-pin, B2-second O-shaped sealing ring, B3-locking ring, 5-baffle ring, B4-upper pressing cap, B5-rubber cylinder, B6-spacer ring, B7-rubber cylinder bush, B8-lower pressing cap, 7-upper cone, C1-setting connecting sleeve, C2-third O-shaped sealing ring, C3-slip sleeve, 6-slip, C4-slip pressing spring, C5-releasing claw, C4-fourth O-shaped sealing ring, 8-lower cone, D1-mandrel, D2-fifth O-shaped sealing ring, D3-sixth O-shaped sealing ring, D4-plug, 9-guiding head, 10-balance joint.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
Embodiment a recoverable oil pipe bridging plug
Referring to the attached drawings 1-5, the recyclable tubing bridge plug comprises a fishing head 1, a connecting rod 2, a lock sleeve 3, a deblocking pull rod 4, a sealing rubber cylinder B5 sleeved on a central tube, a baffle ring 5, a slip 6, an upper cone 7, a lower cone 8, a guide head 9 and a balance joint 10.
The fishing head 1 is used for being connected with a fishing tool during unsealing; the connecting rod 2 is directly connected with a setting tool;
the lower part of the fishing head 1 is connected with the deblocking pull rod 4 through a set screw A2, and the lower part of the deblocking pull rod 4 is connected with a mandrel D1;
the outer part of the deblocking pull rod 4 is connected with a rubber cylinder bushing B7 through a pin B1, and the connecting rod 4 is sleeved outside the rubber cylinder bushing B1 and is connected through a set screw A2;
the upper part of the lock sleeve 3 is connected with the connecting rod 2, the lock sleeve 3 is sleeved outside the rubber cylinder lining B1, and the lock ring B3 and the baffle ring 5 are positioned between the lock sleeve 3 and the rubber cylinder lining B1 to prevent the lock sleeve 3 from moving upwards after moving downwards;
the rubber cylinder B5 is connected between the upper pressing cap B5 and the lower pressing cap B8 and sleeved outside the rubber cylinder bushing B1, and the double rubber cylinders are separated by the spacer ring B6;
the lower part of the lower pressing cap B8 is connected with an upper cone 7, the setting connecting sleeve C1 is positioned between the upper cone 7 and the rubber cylinder bushing B7, the outer part of the setting connecting sleeve C1 is connected with the upper cone 7 through a pin B1, and the inner part of the setting connecting sleeve C1 is connected with the rubber cylinder bushing B7 and a release claw C5 through threads;
the lower end of the upper cone 7 is positioned in the slip 6 assembly, and the lower cone 8 is sleeved outside the release claw C5;
a balance joint 10 is connected below the lower cone 8, and the balance joint 10 is connected below the lower cone 8 through a set screw A2;
the lower part of the balance joint 10 is connected with the guide head 9 through a set screw A2;
the plug D4 is connected in the balance joint 10 through a pin, and the plug D4 is positioned at the upper part of the circulation hole of the balance joint 10 and seals the channel in the pipe before unsealing.
In the working process, the connecting rod 2 of the bridge plug is connected with the setting tool through a pin, the setting force generated by the setting tool is transmitted to the connecting rod 2, and the lock sleeve 3 moves downwards to push the bridge plug to complete setting.
Specifically, the recyclable oil pipe bridge plug comprises a fishing head 1, O-shaped sealing rings A1, B2, C2, C4, D2 and D3, a set screw A2, a connecting rod 2, a release pull rod 4, a lock sleeve 3, a pin B1, a lock ring B3, a baffle ring 5, an upper pressing cap B4, a rubber sleeve B5, a spacer ring B6, a rubber sleeve bushing B7, a lower pressing cap B8, an upper cone 7, a setting connection sleeve C1, a slip sleeve C3, a slip 6, a slip pressure spring C4, a release claw C5, a lower cone 8, a mandrel D1, a plug D4, a guide head 9 and a balance joint 10. The fishing head 1 is used for being connected with a fishing tool when being unsealed, the connecting rod 2 can be directly connected with a setting tool, the lock sleeve 3 pushes the rubber sleeve sealing piece to move downwards, the ratchet on the lock ring B3 can prevent the lock sleeve 3 from moving downwards and then upwards, and the rubber sleeve B5 is prevented from retracting. The setting connecting sleeve C1 is connected with the rubber sleeve bushing B7 and the release claw C5, the setting connecting sleeve C1 is connected with the upper cone 7 through a pin B1, the pin B1 is sheared during setting, the upper cone 7 moves downwards to push open the slips 6, the slip sleeve C3 moves downwards to sit on the balance joint 10, and the slips 6 are propped open and embedded on the inner wall of the oil pipe. The plug D4 is connected to the balance joint 10, and the plug D4 plugs the bridge plug inner pipe during setting.
The O-shaped sealing rings A1, B2, C2, C4, D2 and D3 are additionally provided with back rings at two ends, so that support is provided for the rubber rings, the rubber rings are prevented from deforming, and the sealing capacity of the O-shaped sealing rings is improved.
The upper end and the lower end of the rubber cylinder B5 are respectively sleeved with an upper pressing cap B4 and a lower pressing cap B8 for supporting the rubber cylinder B5, and the rubber cylinder B5 is prevented from deforming under the conditions of high temperature, high pressure and uneven stress.
The setting connecting sleeve C1 is used for connecting the rubber cylinder sleeve B7 and the release claw C5, the setting connecting sleeve C1 plays a connecting role on a setting structure, and when the rubber cylinder is unsealed, the stroke of the rubber cylinder pressing cap B8 can be limited to serve as a retaining ring of the supporting sleeve.
The plug D4 plays a role in sealing a channel in the pipe during setting, when the pipe is unsealed, a fishing tool is used for butting the fishing barrel, the interior of the oil pipe is positively pressed, the pressure cuts the shearing pin B1 on the plug D4, the plug D4 falls to expose the circulating hole, the up-and-down pressure of the bridge plug rubber barrel B5 is balanced, and then the plug D4 is lifted upwards for unsealing. The upper circulation hole of the balanced joint 10 can prevent the cable from being damaged by excessive upper jacking force or excessive lower jacking force during deblocking, so that fish can be prevented.
The deblocking pull rod 4 is connected with the rubber sleeve bushing B7 through a pin B1, the shear pin B1 is lifted during deblocking, the deblocking pull rod 4 drives the mandrel D1 to move upwards, the mandrel D1 releases the restraint on the release claw C5, the release claw C5 retracts, the lower cone 8 moves downwards to recover the slips 6, the rubber sleeve B5 is deblocked by the release bridge plug, and the rubber sleeve bushing B5 is continuously lifted to complete bridge plug recovery.
The problem of can't going into oil pipe plugging valve under the well head area pressure condition can be solved to this application, and shutoff oil pipe can realize that sleeve pipe hydraulic pressure packer carries out the secondary and makes and seal, and accessible fishing tool retrieves, and protection pit shaft integrality has improved the once success rate of well completion, has solved well control risk problem.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. The utility model provides a recoverable oil pipe bridging plug which characterized in that: the recyclable oil pipe bridge plug comprises a fishing head, a connecting rod, a lock sleeve, a deblocking pull rod, a sealing rubber cylinder sleeved on a central pipe, a baffle ring, a slip, an upper cone, a lower cone, a guide head and a balance joint;
the fishing head is used for being connected with a fishing tool during unsealing; the connecting rod is directly connected with the setting tool; the lower part of the fishing head is connected with the deblocking pull rod through a set screw, and the lower part of the deblocking pull rod is connected with the mandrel.
2. The retrievable tubing bridge plug of claim 1, wherein: the outside of deblocking pull rod pass through pin joint with the packing element bush, the connecting rod cover outside the packing element bush to through holding screw connection.
3. The retrievable tubing bridge plug of claim 1, wherein: the upper part of the lock sleeve is connected with the connecting rod, the lock sleeve is sleeved outside the rubber cylinder bushing, and the lock ring and the baffle ring are positioned between the lock sleeve and the rubber cylinder bushing to prevent the lock sleeve from moving upwards after moving downwards.
4. The retrievable tubing bridge plug of claim 1, wherein: the rubber cylinder is connected between the upper pressing cap and the lower pressing cap and sleeved outside the rubber cylinder lining, and the two rubber cylinders are separated by a spacer ring.
5. The retrievable tubing bridge plug of claim 4, wherein: the lower portion of the lower pressing cap is connected with the upper cone, the setting connecting sleeve is located between the upper cone and the rubber cylinder bushing, the outer portion of the setting connecting sleeve is connected with the upper cone through a pin, and the rubber cylinder bushing and the release claw are connected together through threads in the setting connecting sleeve.
6. The retrievable tubing bridge plug of claim 5, wherein: the lower end of the upper cone is positioned in the slip assembly, and the lower cone is sleeved outside the release claw;
the lower cone body is connected with a balance joint below, and the lower cone body is connected with the balance joint through a set screw below.
7. The retrievable tubing bridge plug of claim 1, wherein: the lower part of the balance joint is connected with the guide head through a set screw; the plug is connected inside the balance joint through a pin, is positioned at the upper part of the circulation hole of the balance joint and seals the channel in the pipe before deblocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022440145.7U CN215292438U (en) | 2020-10-28 | 2020-10-28 | Recyclable oil pipe bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022440145.7U CN215292438U (en) | 2020-10-28 | 2020-10-28 | Recyclable oil pipe bridge plug |
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| Publication Number | Publication Date |
|---|---|
| CN215292438U true CN215292438U (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022440145.7U Active CN215292438U (en) | 2020-10-28 | 2020-10-28 | Recyclable oil pipe bridge plug |
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| CN (1) | CN215292438U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809980A (en) * | 2022-04-19 | 2022-07-29 | 大庆市亚盛油田技术开发有限公司 | Hydraulic temporary bridge plug |
| CN115030686A (en) * | 2022-07-06 | 2022-09-09 | 合力（天津）能源科技股份有限公司 | Recyclable oil pipe bridge plug and setting tool |
| CN115263234A (en) * | 2022-08-30 | 2022-11-01 | 大庆长垣能源科技有限公司 | Pressure-controlled underground switch bridge plug |
-
2020
- 2020-10-28 CN CN202022440145.7U patent/CN215292438U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809980A (en) * | 2022-04-19 | 2022-07-29 | 大庆市亚盛油田技术开发有限公司 | Hydraulic temporary bridge plug |
| CN115030686A (en) * | 2022-07-06 | 2022-09-09 | 合力（天津）能源科技股份有限公司 | Recyclable oil pipe bridge plug and setting tool |
| CN115263234A (en) * | 2022-08-30 | 2022-11-01 | 大庆长垣能源科技有限公司 | Pressure-controlled underground switch bridge plug |
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