CN209875110U - Well completion packer with pressure relief balance channel - Google Patents
Well completion packer with pressure relief balance channel Download PDFInfo
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- CN209875110U CN209875110U CN201920550801.3U CN201920550801U CN209875110U CN 209875110 U CN209875110 U CN 209875110U CN 201920550801 U CN201920550801 U CN 201920550801U CN 209875110 U CN209875110 U CN 209875110U
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Abstract
The utility model discloses a take well completion packer of balanced passageway of pressure release, include: the device comprises a sealing mechanism, a slip supporting mechanism, a track reversing mechanism, a centering mechanism and a pressure relief balance mechanism; a slip supporting mechanism is arranged outside the middle part of the track reversing mechanism; a sealing mechanism is arranged above the slip supporting mechanism; the pressure relief balance mechanism is connected with the sealing mechanism; the righting mechanism is connected with the track reversing mechanism. This device reasonable in design, convenient to use, the pressure of lower extreme reaches the balance rapidly through the pressure release hole on pressure release balanced channel, pressure release groove, the cone on the packing element sealing member, and the pressure release is rapid, and work efficiency is high, the facilitate promotion.
Description
Technical Field
The utility model belongs to the technical field of the oil field oil recovery technique in the pit and specifically relates to a take well completion packer of balanced passageway of pressure release.
Background
In the oil exploitation operation, the packer plays a very important role, and is widely applied to various process pipe columns such as oil testing, oil extraction, acidification, fracturing, water exploration and the like. As the production technology is mature, the well completion packer has various structures, such as Y211 type, Y221 type, Y341 type and the like. The Y211 type completion packer is a mechanical packer consisting of a sealing structure, a supporting structure and a track reversing structure. According to the technical requirements of oil fields, when the Y211 type completion string packer is lifted for deblocking, the sealing upper hydraulic pressure and the sealing lower hydraulic pressure of a rubber sleeve are guaranteed to be balanced, and the pressure needs to be relieved quickly, so that the Y211 type completion packer with a pressure relief balance channel is urgently needed to solve the scheme.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take well completion packer of balanced passageway of pressure release.
To achieve the above object, the present invention adopts the following:
a completion packer with a pressure relief balance passageway, comprising: the device comprises a sealing mechanism, a slip supporting mechanism, a track reversing mechanism, a centering mechanism and a pressure relief balance mechanism; a slip supporting mechanism is arranged outside the middle part of the track reversing mechanism; a sealing mechanism is arranged above the slip supporting mechanism; the pressure relief balance mechanism is connected with the sealing mechanism; the righting mechanism is connected with the track reversing mechanism.
Preferably, the sealing mechanism comprises an upper guide ring, a first side rubber cylinder, a second side rubber cylinder, a spacer ring, a middle rubber cylinder, a rubber cylinder seat and a lower guide ring; a first side rubber cylinder is arranged below the upper guide ring; the lower guide ring is arranged below the second side rubber cylinder; the first side rubber cylinder is connected with the middle rubber cylinder through a spacer ring; the second side rubber cylinder is connected with the middle rubber cylinder through a spacer ring; the upper guide ring, the first side rubber cylinder, the spacer ring, the middle rubber cylinder, the spacer ring, the second side rubber cylinder and the lower guide ring are sequentially sleeved on the outer circle of the rubber cylinder seat from top to bottom.
Preferably, the track reversing mechanism comprises a central tube and a track pin; symmetrical track grooves are formed in the central pipe; the track pin is arranged in the track groove and moves in the track groove; the upper end of the central tube penetrates through the rubber cylinder seat; the central tube penetrates through the slip support mechanism.
Preferably, the slip supporting mechanism comprises a cone, slips, a slip hoop, a spring, a slip groove, a pin, a swinging ring and a supporting ring; the slips are arranged in the slip groove; the spring is arranged inside the slip; the slip hoop is arranged on the slip groove and hoops the slip; the slip groove is sleeved on the outer circle of the central pipe; the swing ring is arranged below the slip groove; the swinging ring is sleeved on the outer circle of the central tube; the swing ring is provided with a radial hole, and the track pin enters the track groove through the radial hole; the supporting ring is arranged below the swinging ring and is in threaded connection with the slip groove; the pin is used for fixing the slip groove and the supporting ring; the cone is in threaded connection with the lower guide ring.
Preferably, the pressure relief balance mechanism comprises an upper joint, an adjusting nut, a sealing ring, a sealing joint, a pressure relief balance channel, a pressure relief groove and a pressure relief hole; a sealing ring is arranged on the excircle at the lower end of the upper joint; the adjusting nut is arranged on the outer side of the sealing ring and is in threaded connection with the upper joint; the sealing joint is arranged below the sealing ring; the pressure relief balance channel is formed by an annular space between the central tube and the rubber cylinder seat; the pressure relief groove is arranged below the rubber cylinder seat; the pressure relief hole is arranged on the cone.
Preferably, the righting mechanism comprises a righting through well sleeve and a lower joint; the lower joint is arranged at the lower end of the central pipe; the lower joint is in threaded connection with the central pipe; the centralizing pigging sleeve is arranged outside the lower connector; the righting well opening sleeve is connected with the lower connector through threads.
Preferably, a suspension pin is arranged on the cone; the cone is connected to the center tube by a suspension pin.
Preferably, an O-ring is arranged in the sealing joint.
Preferably, the first side glue cylinder and the second side glue cylinder have the same specification and size.
The utility model has the advantages of it is following:
this device reasonable in design, application method is simple, and during sealed, the sealing member pressurized radially expands sealedly, safe and reliable, during the pressure release, the pressure of lower extreme reaches the balance rapidly through pressure release balanced channel, pressure release groove, pressure release hole on the sealing member, realizes quick pressure release, quick deblocking, labour saving and time saving, and is safe high-efficient.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a completion packer with a pressure relief balance channel according to the present invention.
FIG. 2 is a schematic diagram showing the deployment of the tracking slots on the base pipe of the completion packer.
In the figures, the various reference numbers are:
1-upper joint, 2-adjusting nut, 3-sealing ring, 4-central pipe, 5-sealing joint, 6-O-shaped ring, 7-upper guide ring, 81-first side rubber cylinder, 82-second side rubber cylinder, 9-spacer ring, 10-middle rubber cylinder, 11-rubber cylinder seat, 12-lower guide ring, 13-suspension pin, 14-cone, 15-slip, 16-slip hoop, 17-spring, 18-slip groove, 19-pin, 20-swinging ring, 21-track pin, 22-backing ring, 23-centralizing through well sleeve, 24-lower joint, 25-pressure relief balance channel, 26-pressure relief groove, 27-pressure relief hole, 28-central pipe long track upper dead point, 29-central pipe short track upper dead point, 30-short and long track bottom dead center of the central tube.
Detailed Description
In order to illustrate the invention more clearly, the invention is further described below with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
As shown in fig. 1 and 2, a completion packer with a pressure relief balance channel comprises: the device comprises a sealing mechanism, a slip supporting mechanism, a track reversing mechanism, a centering mechanism and a pressure relief balance mechanism; a slip supporting mechanism is arranged outside the middle part of the track reversing mechanism; a sealing mechanism is arranged above the slip supporting mechanism; the pressure relief balance mechanism is connected with the sealing structure; the righting structure is connected with the track reversing mechanism.
Further, the sealing mechanism comprises an upper guide ring 7, a first side rubber cylinder 81, a second side rubber cylinder 82, a spacer ring 9, a middle rubber cylinder 10, a rubber cylinder seat 11 and a lower guide ring 12; a first side rubber cylinder 81 is arranged below the upper guide ring 7; the lower guide ring 12 is arranged below the second side rubber cylinder 82; the first side rubber cylinder 81 is connected with the middle rubber cylinder 10 through a spacer ring 9; the upper guide ring 7, the first side rubber cylinder 81, the spacer ring 9, the middle rubber cylinder 10, the spacer ring 9, the second side rubber cylinder 82 and the lower guide ring 12 are sleeved on the outer circle of the rubber cylinder seat 11 from top to bottom in sequence; the rubber cylinder seat 11 is sleeved on the excircle of the upper end of the large excircle of the central tube 4.
Further, the track reversing mechanism comprises a central tube 4 and a track pin 21; the central tube 4 is provided with a track groove; the track pin 21 moves in the track groove; the upper end of the central tube 4 passes through the rubber cylinder seat 11; the central tube 4 extends through the slip support mechanism.
Further, the slip supporting mechanism comprises a cone 14, slips 15, a slip hoop 16, a spring 17, a slip groove 18, a pin 19, a swing ring 20 and a backing ring 22; slips 15 are installed in the slip groove 18; the spring 17 is arranged inside the slip 15; the slip hoops 16 are arranged on the slip grooves 18 and hoop the slips 15; the slip groove 18 is sleeved on the outer circle of the central pipe 4; swing ring 20 is disposed below slip groove 18; the oscillating ring 20 is sleeved on the excircle of the central tube 4; symmetrical track pins 21 are arranged in radial holes of the swinging ring 20, and the track pins 21 enter a central pipe track groove; a supporting ring 22 is sleeved on the excircle of the central tube 4 to block the swinging ring 20 and is screwed and tightened with the slip groove 18; the pin 19 is used for fixing the slip groove 18 and the supporting ring 22; the cone 14 is in threaded connection with the seal mechanism lower guide ring 12.
Further, the pressure relief balance mechanism comprises an upper joint 1, an adjusting nut 2, a sealing ring 3, a sealing joint 5, a pressure relief balance channel 25, a pressure relief groove 26 and a pressure relief hole 27; a sealing ring 3 is arranged on the excircle of the lower end of the upper joint 1; the adjusting nut 2 is arranged on the outer side of the sealing ring 3, blocks the sealing ring 3 and is in threaded connection with the upper joint 1; the sealing joint 5 is arranged below the sealing ring 3; the sealing joint 5 is in threaded connection with the rubber cylinder seat 11; moving the sealing mechanism to enable the sealing joint 5 to compact the sealing ring 3, and then matching and connecting the sealing ring with the central pipe 4 through the cone 14 by the suspension pin 13; the pressure relief balance channel 25 is formed by an annular space between the central tube 4 and the rubber cylinder seat 11; the pressure relief groove 26 is arranged below the rubber cylinder seat 11; the pressure relief hole 27 is provided in the cone 14.
Further, the centralizing mechanism comprises a centralizing through-well casing 23 and a lower joint 24; the lower joint 24 is arranged at the lower end of the central tube 4; the lower joint 24 is in threaded connection with the central tube 4; the centralizing through-well sleeve 23 is arranged outside the lower joint 24; the centralizing through-well sleeve 23 is in threaded connection with the lower connector 24.
Further, an O-shaped ring 6 is arranged in the sealing joint 5.
Further, the specification and the size of the first side glue cylinder 81 are the same as those of the second side glue cylinder 82.
The connection mode of the device is that a rubber cylinder seat 11 is sleeved on the excircle of the upper end of the large excircle of the central tube 4, and a lower guide ring 12 is sleeved on the excircle of the rubber cylinder seat 11; sequentially sleeving a rubber cylinder assembly on the excircle of a rubber cylinder seat 11 according to the sequence of a first side rubber cylinder 81, a spacer ring 9, a middle rubber cylinder 10, the spacer ring 9 and a second side rubber cylinder 82, and sleeving an upper guide ring 7; the sealing joint 5 embedded with the O-shaped ring 6 is screwed and tightened with the upper guide ring 7, and the sealing joint 5 is screwed and tightened with the rubber cylinder seat 11; finally, the cone 14 is sleeved on the excircle of the lower end of the central tube 4 and is screwed and tightened with the lower guide ring 12.
Installing a sealing ring 3 on the excircle at one end of an upper joint 1, blocking the sealing ring 3 by using an adjusting nut 2, and screwing and tightening the sealing ring and the upper joint 1; the assembled sealing and other moving mechanism is moved until the sealing joint 5 compacts the sealing ring 3, and the suspension pin 13 is connected with the central tube 4 through the cone 14.
Sleeving a slip groove 18 on the outer circle of the central tube 4, installing a slip hoop 16 on the slip groove 18, rotating the slip hoop 16, installing a slip 15, arranging a spring in the slip 15, and installing six slips 15 and an internal spring 17 by adopting the same method; sleeving a swinging ring 20 on the excircle of a central tube 4, installing symmetrical track pins 21 in radial holes of the swinging ring 20, and entering a central tube track groove; finally, a supporting ring 22 is sleeved on the outer circle of the central tube 4 to block the swinging ring 20 and is screwed up with the slip groove 18, and the slip groove 18 and the supporting ring 22 are fixed by a pin 19 to prevent the screw thread from loosening; the slip assembly to be assembled is checked for free movement in the track groove of the base pipe 4.
And (3) screwing the lower joint 24 and the central tube 4 tightly, and screwing the centralizing through well sleeve 23 and the lower joint 24 tightly.
According to the working principle of the device, when the packer is put into a well, the righting mechanism is tightly attached to the inner wall of the casing under the action of the spring, the track pin 21 is located at the top dead center 29 of the short track of the central tube, and the slips 15 are locked on the central tube 4 to guarantee smooth putting into the well. When the pipe falls to a preset position, the pipe column is lifted to a certain height, and the track pin 21 slides into the long and short track bottom dead center 30 of the central pipe. At this point the string is lowered and the track pin 21 slides to the long track top dead centre 28 of the centre tube and the cone 14 enters the slips 15 causing it to open and become stuck to the casing wall. Meanwhile, the pipe column is continuously lowered to compress the packer rubber sleeve, so that the rubber sleeve sealing element is radially expanded, the annular space of the oil casing is sealed, and the setting of the packer is realized.
After the sealing ring 3 at the end of the upper joint 1 and the sealing joint 5 are just sealed, a combined piece at the upper end of the cone 14 is matched and connected to the central pipe 4 by using a suspension pin 13, and the upper end and the lower end of the rubber cylinder are not communicated after the packer is set.
When the packer needs to be unsealed, the pipe column only needs to be lifted, the pipe column is kept still due to the friction effect of the rubber sleeve sealing assembly, the hanging pin 13 is cut off when the pipe column is lifted, the upper joint 1, the central pipe 4, the adjusting nut 2, the lower joint 24 and other unsealing mechanisms go upwards to drive the sealing ring 3 to leave the sealing joint 5, and therefore the pressure of the upper end and the lower end of the rubber sleeve sealing element is quickly balanced, quickly decompressed and unsealed through the decompression balance channel 25, the decompression groove 26 and the decompression hole 27 in the cone 14.
Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.
Claims (9)
1. A completion packer with a pressure relief balance passage, comprising: the device comprises a sealing mechanism, a slip supporting mechanism, a track reversing mechanism, a centering mechanism and a pressure relief balance mechanism; a slip supporting mechanism is arranged outside the middle part of the track reversing mechanism; a sealing mechanism is arranged above the slip supporting mechanism; the pressure relief balance mechanism is connected with the sealing mechanism; the righting mechanism is connected with the track reversing mechanism.
2. The completion packer with the pressure relief balance channel as claimed in claim 1, wherein the sealing mechanism comprises an upper guide ring, a first side packing element, a second side packing element, a spacer ring, a middle packing element, a packing element seat and a lower guide ring; a first side rubber cylinder is arranged below the upper guide ring; the lower guide ring is arranged below the second side rubber cylinder; the first side rubber cylinder is connected with the middle rubber cylinder through a spacer ring; the second side rubber cylinder is connected with the middle rubber cylinder through a spacer ring; the upper guide ring, the first side rubber cylinder, the spacer ring, the middle rubber cylinder, the spacer ring, the second side rubber cylinder and the lower guide ring are sequentially sleeved on the outer circle of the rubber cylinder seat from top to bottom.
3. The completion packer with the pressure relief balance channel of claim 1, wherein the track reversing mechanism comprises a base pipe and a track pin; symmetrical track grooves are formed in the central pipe; the track pin is arranged in the track groove and moves in the track groove; the upper end of the central tube penetrates through the rubber cylinder seat; the central tube penetrates through the slip support mechanism.
4. The completion packer with the pressure relief balance channel of claim 1, wherein the slip support mechanism comprises a cone, a slip collar, a spring, a slip groove, a pin, a wobble ring, and a ring; the slips are arranged in the slip groove; the spring is arranged inside the slip; the slip hoop is arranged on the slip groove and hoops the slip; the slip groove is sleeved on the outer circle of the central pipe; the swing ring is arranged below the slip groove; the swinging ring is sleeved on the outer circle of the central tube; the swing ring is provided with a radial hole, and the track pin enters the track groove through the radial hole; the supporting ring is arranged below the swinging ring and is in threaded connection with the slip groove; the pin is used for fixing the slip groove and the supporting ring; the cone is connected with the lower guide ring through threads.
5. The completion packer with the pressure relief balance channel as claimed in claim 1, wherein the pressure relief balance mechanism comprises an upper joint, an adjusting nut, a sealing ring, a sealing joint, the pressure relief balance channel, a pressure relief groove and a pressure relief hole; a sealing ring is arranged on the excircle at the lower end of the upper joint; the adjusting nut is arranged on the outer side of the sealing ring and is in threaded connection with the upper joint; the sealing joint is arranged below the sealing ring; the pressure relief balance channel is formed by an annular space between the central tube and the rubber cylinder seat; the pressure relief groove is arranged below the rubber cylinder seat; the pressure relief hole is arranged on the cone.
6. The completion packer with the pressure relief balance channel of claim 1, wherein the centralizing mechanism comprises a centralizing through-well casing and a lower joint; the lower joint is arranged at the lower end of the central pipe; the lower joint is in threaded connection with the central pipe; the centralizing pigging sleeve is arranged outside the lower connector; the righting well opening sleeve is connected with the lower connector through threads.
7. The completion packer with the pressure relief balance channel as claimed in claim 4, wherein the cone is provided with a suspension pin; the cone is connected to the center tube by a suspension pin.
8. The completion packer with the pressure relief balance channel as recited in claim 5, wherein an O-ring is disposed in the sealing joint.
9. The completion packer with the pressure relief balance channel as claimed in claim 2, wherein the size of the first side packing element is the same as that of the second side packing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920550801.3U CN209875110U (en) | 2019-04-22 | 2019-04-22 | Well completion packer with pressure relief balance channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920550801.3U CN209875110U (en) | 2019-04-22 | 2019-04-22 | Well completion packer with pressure relief balance channel |
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| Publication Number | Publication Date |
|---|---|
| CN209875110U true CN209875110U (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920550801.3U Active CN209875110U (en) | 2019-04-22 | 2019-04-22 | Well completion packer with pressure relief balance channel |
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| CN (1) | CN209875110U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934759A (en) * | 2022-06-01 | 2022-08-23 | 天津东拓油田技术服务有限公司 | N-type removable inner bridge plug of oil pipe |
-
2019
- 2019-04-22 CN CN201920550801.3U patent/CN209875110U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934759A (en) * | 2022-06-01 | 2022-08-23 | 天津东拓油田技术服务有限公司 | N-type removable inner bridge plug of oil pipe |
| CN114934759B (en) * | 2022-06-01 | 2024-05-14 | 天津东拓油田技术服务有限公司 | N-type removable oil pipe inner bridge plug |
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