CN210087290U - Packer for closed pipe column - Google Patents
Packer for closed pipe column Download PDFInfo
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- CN210087290U CN210087290U CN201920434420.9U CN201920434420U CN210087290U CN 210087290 U CN210087290 U CN 210087290U CN 201920434420 U CN201920434420 U CN 201920434420U CN 210087290 U CN210087290 U CN 210087290U
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Abstract
The utility model discloses a packer for a closed tubular column, which comprises an upper inner tube, a lower inner tube, a packing element setting driving mechanism, a locking mechanism, a packing element mechanism, a slip mechanism and a blowout prevention safety valve, wherein a valve seat is hung on a release sleeve, the upper port of the valve seat is blocked by a valve ball, the release sleeve is fixed on the lower inner tube through the release shear pin, the outer wall of the lower inner tube is provided with a lock block groove, a lock block is arranged in the lock block groove, the upper part of the release sleeve sleeves the lock block to ensure that the lock block cannot be separated from the lower inner tube, the lock block is positioned at the lower end of the sealing barrel, the lock block ensures that the lower end of the sealing barrel is limited, the upper end of the inner communicating pipe supports the bottom of the valve seat, the release sleeve, the valve seat and the inner communicating pipe are all positioned in the outer communicating pipe, the upper end of the outer communicating pipe is connected with a lower cone of the slip mechanism, the lower end of the outer communicating pipe is connected with a spring sleeve, a spring is installed in the spring sleeve, and the upper end of the spring abuts against the inner communicating pipe. The utility model discloses well blowout can not take place when lifting oil pipe in the workover, avoids unsafe occurence of failure, avoids producing economic loss.
Description
Technical Field
The utility model relates to an oil field oil production equipment, specifically speaking are packer that closed tubular column was used.
Background
The oil inlet valve of the oil well pump in common use has no blowout prevention function, and can not prevent high-pressure fluid in the well from being sprayed to a well mouth, and Chinese patent 200820181654.9, namely the oil inlet valve of the oil well pump capable of transmitting pressure, also has no blowout prevention function. Chinese patent 200520020030.5 "blowout preventer of oil pump" is designed to prevent high pressure fluid in well from being sprayed to well head, but its structure is complex, there are many parts, reliability can't meet the requirement, when the pressure of hydraulic column on pump is high, the spring elasticity can't make it change direction, the sliding valve can't separate from valve seat, cause the oil pump can't work normally. The Chinese patent 201010172873.2 oil pump blowout prevention oil inlet valve also has the problem of complex structure, and the reliability is not high because the mechanism for matching and sealing the inner sealing body and the outer sealing body is added. Above-mentioned patent also can only satisfy when tripping the sucker rod prevent spouting, can not realize preventing the blowout when tripping the oil pumping tubular column, and their range of preventing spouting is very limited, and above-mentioned patent still has the problem of sealed tubular column, and high-pressure fluid stream can jet out and take place the blowout in the well when workover rises oil pipe, oil-well pump, takes place great incident, produces great economic loss.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a packer that closed tubular column was used, the workover can not take place the blowout when having fallen oil pipe down, avoids unsafe occurence of failure, avoids producing economic loss.
In order to achieve the above purpose, the utility model adopts the following technical scheme, a packer for a closed tubular column comprises an upper inner tube, a lower inner tube, a rubber sleeve setting driving mechanism, a locking mechanism, a rubber sleeve mechanism and a slip mechanism, wherein the lower end of the upper inner tube is connected with the lower inner tube, a sealing sleeve is sleeved on the outer wall of the lower inner tube, the rubber sleeve setting driving mechanism and the locking mechanism are sleeved outside the upper inner tube, the rubber sleeve mechanism and the slip mechanism are sleeved outside the sealing sleeve, the rubber sleeve setting driving mechanism, the locking mechanism, the rubber sleeve mechanism and the slip mechanism are sequentially connected from top to bottom, and the packer further comprises a blowout prevention safety valve, the blowout prevention safety valve comprises an outer communicating tube, a locking block, a release shear pin, a release sleeve, a valve ball, a valve seat, an inner communicating tube, a spring and a spring seat, the valve seat is hung on the release sleeve, the port on the valve seat is blocked by the valve ball, the locking piece groove is seted up to lower inner tube outer wall, lays the locking piece in the locking piece groove, and the locking piece is entangled on the upper portion of release cover, makes the locking piece can not break away from lower inner tube, and the locking piece is in the lower extreme of a sealed section of thick bamboo, and the locking piece makes the lower extreme of a sealed section of thick bamboo spacing, the disk seat bottom is held in the support of interior communicating pipe upper end, release cover, disk seat, interior communicating pipe all are located outside communicating pipe inside, the lower cone of slips mechanism is connected to outside communicating pipe upper end, and outer communicating pipe lower extreme connects the spring housing, installs the spring in the spring housing, and interior communicating pipe is withstood to the spring upper end, outer communicating pipe sets up the outer through-hole that radially link up, interior communicating pipe sets up the interior through.
An upper sealing ring and a lower sealing ring are arranged between the outer communicating pipe and the inner communicating pipe, the upper sealing ring is positioned above the inner communicating through hole, the upper sealing ring is positioned above the outer communicating through hole, the lower sealing ring is positioned below the inner communicating through hole, and the lower sealing ring is positioned below the outer communicating through hole.
The packing element setting actuating mechanism comprises a hydraulic cylinder, a piston, a pushing pipe and a setting shear pin, wherein a hydraulic cylinder sleeve forms an annular cavity between the outside of an upper inner pipe and the outside of the upper inner pipe, the piston is installed in the annular cavity, the upper ends of the hydraulic cylinder and the upper inner pipe are connected with an upper connector at the same time, the pushing pipe extends into the hydraulic cylinder and contacts with the bottom end of the piston, the pushing pipe is fixed on the inner wall of the hydraulic cylinder through the setting shear pin, the lower end of the pushing pipe is connected with a locking pipe of a locking mechanism, and the upper inner pipe is provided with a hydraulic connecting.
An outer sealing ring is installed on the outer wall of the piston, the outer sealing ring seals a gap between the piston and the hydraulic cylinder, an inner sealing ring is installed on the inner wall of the piston, and the inner sealing ring seals the gap between the piston and the upper inner pipe.
The locking mechanism comprises an opening lock ring, a fishing joint, a deblocking shear pin, a connecting sleeve and a lock pipe, the fishing joint and the connecting sleeve are inserted together and connected through the deblocking shear pin, a one-way lock catch is arranged on the outer wall of the lower portion of the fishing joint, the upper portion of the sealing cylinder is connected with the lower portion of the connecting sleeve, the opening lock ring is installed in the lock pipe, the inner wall of the opening lock ring is provided with the one-way lock catch, the one-way lock catch on the inner wall of the opening lock ring is matched with the one-way lock catch on the fishing joint, the upper portion of the lock pipe is connected with the lower portion of the pushing pipe.
And the upper part of the fishing joint is provided with fishing threads, and the fishing threads are oil pipe threads or butt-buckling fishing spear threads.
The rubber cylinder mechanism comprises a rubber cylinder, a rubber cylinder shaft and a hanging sleeve, wherein the rubber cylinder and the hanging sleeve are sleeved on the outer wall of the rubber cylinder shaft, the upper end of the hanging sleeve props against the lower end face of the rubber cylinder, the upper end of the rubber cylinder is propped against the lower end face of a locking pipe of the locking mechanism, and the rubber cylinder is sleeved on the outer wall of the sealing cylinder.
The slip mechanism comprises an upper cone, a slip sleeve, a slip, a lower cone and a blocking joint, the slip is installed in the slip sleeve, a radial window enabling the slip to be radially exposed is formed in the slip sleeve, the lower end of the upper cone is connected with an upper cone of the slip in a matched mode, the upper end of the upper cone is connected with a suspension mechanism of the rubber cylinder mechanism, the upper end of the lower cone is connected with a lower cone of the slip in a matched mode, the lower cone is suspended on the blocking joint, and the blocking joint is connected to the lower end of the slip sleeve.
Compared with the prior art, the utility model following beneficial effect has:
after the valve ball is thrown into the well, the seat seal shear pin is broken, the slips are anchored, the rubber cylinder expands the sealing sleeve, anchoring and expanding of the sealing sleeve are completed at one time, boosting is continued to break the release shear pin, the release sleeve falls to lose the restraint on the locking block during workover, the lower inner pipe can be drawn out along with the pipe column, the inner communicating pipe is lifted upwards by the spring, the inner communicating hole is positioned on the upper sealing ring and is not communicated with the stratum, high-pressure liquid flow in the well cannot be sprayed out, after the workover operation of the oil well is completed, the lower inner pipe is pushed and pressed again to enable the inner communicating hole to be communicated with the outer communicating hole, and well liquid can enter the upper pump and is drawn out. Therefore, the utility model discloses can reach the design purpose, can not take place the blowout when the workover plays oil pipe down, can avoid unsafe occurence of failure, avoid producing economic loss, have apparent economic benefits and social.
Drawings
Fig. 1 is the utility model discloses a packer's that closed tubular column was used structural section.
In the figure: the hydraulic control valve comprises an upper joint 1, a hydraulic cylinder 2, an annular cavity 3, a hydraulic communicating hole 4, a piston 5, a pushing pipe 6, a seat seal shear pin 7, an upper inner pipe 8, a fishing thread 9, an opening lock ring 10, a fishing joint 11, a one-way lock catch 12, a deblocking shear pin 13, a connecting sleeve 14, a lock pipe 15, a rubber cylinder 16, a rubber cylinder shaft 17, a suspension sleeve 18, an upper cone 19, a sealing cylinder 20, a lower inner pipe 21, a slip sleeve 22, a slip 23, a lower cone 24, a blocking joint 25, an outer communicating pipe 26, a locking block 27, a release shear pin 28, a release sleeve 29, a valve ball 30, a valve seat 31, an inner communicating pipe 32, an upper sealing ring 33, an inner communicating hole 34, an outer communicating hole 35, a lower sealing ring 36, a spring 37 and a spring seat 38.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a packer for a closed pipe column, wherein an external thread at the lower part of an upper joint 1 is connected with the upper part of a hydraulic cylinder 2, an internal thread at the lower part of the upper joint 1 is connected with the upper part of an upper inner pipe 8, a piston 5 is arranged between the hydraulic cylinder 2 and the upper inner pipe 8, a hydraulic communicating hole 4 is arranged below the upper part thread of the upper inner pipe 8, the lower end surface of the upper joint 1, the upper end surface of the piston 5, the outer wall of the upper inner pipe 8 and the inner wall of the hydraulic cylinder 2 enclose an annular cavity 3, a pushing pipe 6 is arranged below the piston 5, the pushing pipe 6 is connected with the hydraulic cylinder 2 through a seat seal shear pin 7, the upper part of a lower inner pipe 21 is connected with the lower part of the upper inner pipe 8, a fishing joint 11 is inserted into a connecting sleeve 14 and connected through a deblocking shear pin 13, the outer wall of the lower part of the fishing joint 11 is provided with a one-way lock catch 12, the, the one-way lock catch on the inner wall of the lock ring 10 is matched with the one-way lock catch 12 on the fishing joint 11, the upper part of the lock tube 15 is connected with the lower part of the pushing tube 6, the fishing joint 11 is hung on the inner shoulder of the lower part of the lock tube 15, the hanging sleeve 18 and the rubber tube 16 are sleeved on the rubber tube shaft 17 from top to bottom, the hanging sleeve 18 is hung on the lower shoulder of the rubber tube shaft 17, the upper part of the rubber tube shaft 17 is connected with the lower part of the lock tube 15, the slip sleeve 22 is hung on the upper cone 19, the upper part of the upper cone 19 is connected with the lower part of the hanging sleeve 18, the lower cone 24 is installed in the slip sleeve 22, the slip 23 is installed between the upper cone 19 and the lower cone 24, the blocking joint 25 is connected with the lower part of the slip sleeve 22, the lower cone 24 is hung on the blocking joint 25, the valve seat 31 is installed on the lower part of the lower inner tube 21, the valve ball 30 is seated on the valve seat 31, so that the liquid can flow from the lower, the release sleeve 29 is sleeved on the lower portion of the lower inner pipe 21, the upper portion of the release sleeve 29 sleeves the lock block 27 to enable the lock block 27 not to be separated from the lower inner pipe 21, the lock block 27 is located at the lower end of the sealing barrel 20, the lock block 27 enables the lower end of the sealing barrel 20 to be limited, the upper portion of the outer communicating pipe 26 is connected with the lower portion of the lower cone 24, the inner communicating pipe 32 is placed in the outer communicating pipe 26, the spring 37 is installed in the spring seat 38, the upper portion of the spring seat 38 is connected to the lower portion of the outer communicating pipe 26, the spring 37 supports the inner communicating pipe 32 to enable the upper portion of the inner communicating pipe 32 to support the valve seat 31, the inner communicating pipe 32 is provided with an inner communicating hole 34, the outer communicating pipe 26 is provided with an outer communicating hole 35, an upper sealing ring 33 and a lower sealing ring 36 are arranged between the outer communicating pipe 26 and the inner communicating pipe 32, the upper sealing ring 33 is located above the inner communicating hole 34 and.
The upper part of the fishing joint 11 is provided with fishing threads 9, the fishing threads 9 are oil pipe threads or buckling fishing spear threads, and the fishing spear threads are conveniently fished out when being overhauled completely.
An outer sealing ring 5-1 is installed on the outer wall of the piston 5, the outer sealing ring 5-1 seals a gap between the piston 5 and the hydraulic cylinder 2, an inner sealing ring 5-2 is installed on the inner wall of the piston 5, and the inner sealing ring 5-2 seals the gap between the piston 5 and the upper inner pipe 8, so that the annular cavity 3 can be rapidly boosted.
During setting, a valve ball 30 is thrown and pressed inwards, hydraulic pressure is transmitted to a piston 5 from the through hole 4, a pressure pushing pipe 6 is made to downwards cut a setting shear pin 7, the pressure pushing pipe 6 is made to downwards move to make an upper cone 19 downwards, the distance between the upper cone 19 and a lower cone 24 is shortened, a slip 23 is pushed to outwards move and be firmly clamped on the wall of a casing, the pressure pushing pipe 6 continuously downwards moves, a rubber cylinder 16 is compressed to seal the casing, meanwhile, an opening locking ring 10 is downwards buckled on a one-way lock catch 12 on a fishing joint 11 along with the descending, the rubber cylinder 16 is locked and is not retracted, the slip 23 is firmly clamped on the casing all the time after the pressure disappears, and the rubber cylinder 14 always seals the casing.
The pressure is continuously increased to break the release shear pin 28, the release sleeve 29 falls to lose the restraint of the locking block 27 during workover operation, the lower inner pipe 21 can be pulled out along with the pipe column, the inner communicating pipe 32 is pushed upwards by the spring 38, the inner communicating through hole 34 is positioned above the upper sealing ring 33, the inner communicating pipe 32 is not communicated with the stratum, high-pressure liquid flow in the well cannot be sprayed out, after the workover operation of the oil well is completed, the lower inner pipe 21 is pushed and pressed into the inner communicating pipe 32 again, the inner communicating through hole 34 is communicated with the outer communicating through hole 35, and well liquid can enter the upper pump to be pulled out.
When overhauling and salvaging, the lower fisher is connected with the salvaging thread 9 at the upper part of the salvaging connector 11 and then lifted, the unsealing shear pin 13 is broken, the salvaging connector 11 is separated from the connecting sleeve 14, the distance between the upper cone 19 and the lower cone 24 is increased, the slip 23 is withdrawn, the rubber sleeve 16 is withdrawn, and unsealing is realized.
In the description of the present invention, it should be understood that the orientation indication or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A packer for a closed tubular column comprises an upper inner tube, a lower inner tube, a rubber cylinder setting driving mechanism, a locking mechanism, a rubber cylinder mechanism and a slip mechanism, wherein the lower end of the upper inner tube is connected with the lower inner tube, a sealing cylinder is sleeved on the outer wall of the lower inner tube, the rubber cylinder setting driving mechanism and the locking mechanism are sleeved outside the upper inner tube, the rubber cylinder mechanism and the slip mechanism are sleeved outside the sealing cylinder, the rubber cylinder setting driving mechanism, the locking mechanism, the rubber cylinder mechanism and the slip mechanism are sequentially connected from top to bottom, and the packer is characterized by further comprising a blowout prevention safety valve, wherein the blowout prevention safety valve comprises an outer communicating tube, a locking block, a release shear pin, a release sleeve, a valve ball, a valve seat, an inner communicating tube, a spring and a spring seat, the valve seat is hung on the release sleeve, the upper port of the valve seat is blocked by the valve ball, the release sleeve is fixed on the lower inner tube through, lay the locking piece in the locking piece groove, the locking piece is entangled on the upper portion of release cover, makes the locking piece can not break away from lower inner tube, and the locking piece is in the lower extreme of a sealed section of thick bamboo, and the locking piece makes the lower extreme of a sealed section of thick bamboo spacing, the disk seat bottom is held in the interior communicating pipe upper end, release cover, disk seat, interior communicating pipe all are located inside the outer communicating pipe, the lower cone of slips mechanism is connected to outer communicating pipe upper end, and outer communicating pipe lower extreme connection spring housing installs the spring in the spring housing, and the interior communicating pipe is withstood to the spring upper end, outer communicating pipe sets up the outer communicating hole that radially link up, interior communicating pipe sets up the interior communicating hole that radially link up.
2. The packer of claim 1, wherein an upper seal ring and a lower seal ring are arranged between the outer communicating pipe and the inner communicating pipe, the upper seal ring is arranged above the inner communicating through hole, the upper seal ring is arranged above the outer communicating through hole, the lower seal ring is arranged below the inner communicating through hole, and the lower seal ring is arranged below the outer communicating through hole.
3. The packer for the closed tubular column according to claim 1 or 2, wherein the packing element setting driving mechanism comprises a hydraulic cylinder, a piston, a pushing pipe and a setting shear pin, the hydraulic cylinder sleeve forms an annular cavity outside the upper inner tube, the piston is installed in the annular cavity, the upper end of the hydraulic cylinder and the upper inner tube are simultaneously connected with an upper joint, the pushing pipe extends into the hydraulic cylinder and contacts with the bottom end of the piston, the pushing pipe is fixed on the inner wall of the hydraulic cylinder through the setting shear pin, the lower end of the pushing pipe is connected with a locking pipe of the locking mechanism, and the upper inner tube is provided with a hydraulic communication hole communicated with the annular cavity.
4. A packer for a closed tubular string as claimed in claim 3, wherein an outer seal ring is mounted on an outer wall of the piston to seal a gap between the piston and the hydraulic cylinder, and an inner seal ring is mounted on an inner wall of the piston to seal a gap between the piston and the upper inner tube.
5. The packer for the closed tubular column according to claim 1 or 2, wherein the locking mechanism comprises an open locking ring, a fishing joint, a deblocking shear pin, a connecting sleeve and a locking tube, the fishing joint and the connecting sleeve are inserted together and connected by the deblocking shear pin, the outer wall of the lower part of the fishing joint is provided with a one-way lock catch, the upper part of the sealing barrel is connected with the lower part of the connecting sleeve, the open locking ring is installed in the locking tube, the inner wall of the open locking ring is provided with the one-way lock catch, the one-way lock catch on the inner wall of the open locking ring is matched with the one-way lock catch on the fishing joint, the upper part of the locking tube is connected with the lower part of the pushing tube, and an inner shoulder on.
6. The packer for the closed tubular string as claimed in claim 5, wherein the fishing joint has a fishing thread on the upper part, and the fishing thread is a tubing thread or a stabbing fishing spear thread.
7. The packer for the closed tubular column according to claim 1 or 2, wherein the rubber sleeve mechanism comprises a rubber sleeve, a rubber sleeve shaft and a suspension sleeve, the rubber sleeve and the suspension sleeve are both sleeved on the outer wall of the rubber sleeve shaft, the upper end of the suspension sleeve abuts against the lower end face of the rubber sleeve, the upper end of the rubber sleeve is abutted against the lower end face of the locking pipe of the locking mechanism, and the rubber sleeve is sleeved on the outer wall of the sealing sleeve.
8. The packer for the closed tubular column according to claim 1 or 2, wherein the slip mechanism comprises an upper cone, a slip sleeve, a slip, a lower cone and a blocking joint, the slip is installed in the slip sleeve, the slip sleeve is provided with a radial window capable of radially exposing the slip, the lower end of the upper cone is connected with the upper cone of the slip in a matching manner, the upper end of the upper cone is connected with the suspension mechanism of the rubber sleeve mechanism, the upper end of the lower cone is connected with the lower cone of the slip in a matching manner, the lower cone is suspended on the blocking joint, and the blocking joint is connected with the lower end of the slip sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920434420.9U CN210087290U (en) | 2019-04-01 | 2019-04-01 | Packer for closed pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920434420.9U CN210087290U (en) | 2019-04-01 | 2019-04-01 | Packer for closed pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210087290U true CN210087290U (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920434420.9U Active CN210087290U (en) | 2019-04-01 | 2019-04-01 | Packer for closed pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210087290U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287686A (en) * | 2020-03-13 | 2020-06-16 | 中石化绿源地热能(陕西)开发有限公司 | Double-seal setting device and hanger |
| CN111561295A (en) * | 2020-05-20 | 2020-08-21 | 大庆丹诺石油科技开发有限公司 | Hydraulic oil extraction double-channel underwater safety valve for ocean oil well |
| CN114458225A (en) * | 2022-02-16 | 2022-05-10 | 成都德维石油技术服务有限责任公司 | Packer with safety valve |
-
2019
- 2019-04-01 CN CN201920434420.9U patent/CN210087290U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287686A (en) * | 2020-03-13 | 2020-06-16 | 中石化绿源地热能(陕西)开发有限公司 | Double-seal setting device and hanger |
| CN111561295A (en) * | 2020-05-20 | 2020-08-21 | 大庆丹诺石油科技开发有限公司 | Hydraulic oil extraction double-channel underwater safety valve for ocean oil well |
| CN111561295B (en) * | 2020-05-20 | 2024-05-10 | 大庆丹诺石油科技开发有限公司 | Double-channel underwater safety valve for hydraulic oil production of ocean oil well |
| CN114458225A (en) * | 2022-02-16 | 2022-05-10 | 成都德维石油技术服务有限责任公司 | Packer with safety valve |
| CN114458225B (en) * | 2022-02-16 | 2023-09-15 | 成都德维石油技术服务有限责任公司 | Packer with safety valve |
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