CN208236381U - Tubing plug - Google Patents
Tubing plug Download PDFInfo
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- CN208236381U CN208236381U CN201820275934.XU CN201820275934U CN208236381U CN 208236381 U CN208236381 U CN 208236381U CN 201820275934 U CN201820275934 U CN 201820275934U CN 208236381 U CN208236381 U CN 208236381U
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- tubing plug
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Abstract
The utility model provides tubing plug, belong to oil-water well downhole tool technical field, tubing plug includes center-pole, cartridge, the driving assembly that driving cartridge is compressed axially and the positioning and locking device for clamping tube inner wall are equipped on center-pole, the tubing plug further includes for the anchoring structure of location oil pipe plugging device position and for connecting with rope on centrally disposed bar to lift the back-off sub of the tubing plug, and the anchoring structure includes the Fastener for clamping tube inner wall to realize the anchoring of the tubing plug.By the way that anchoring structure is arranged on tubing plug, card support device is sat without throwing when carrying out blocking operation, it can be completed by the rope that lifting is connected in back-off sub and set, position and give up, the job success ratio for effectively increasing tubing plug solves the problems, such as tubing plug location difficulty in the prior art and low success rate of.
Description
Technical field
The utility model relates to tubing plugs.
Background technique
When oil-water well workover treatment, for pressure on balance well, gas blowout accident is prevented, well killing fluid kill-job need to be used, due to pressure
Well liquid is chemical agent, and oil reservoir easy to pollute influences reservoir recovery.It is usually high in maintenance in order to reduce the pollution to oil reservoir
When pressure oil gas-water well, using Operating Pressure, i.e., in the case that no killing well, not open flow, keep former borehole pressure from lower tubular column, remove
Before oil pipe, it is necessary to block oil pipe using related blanking plug first, prevent the highly pressurised liquids such as crude oil, water from entering in oil pipe from outer wellhead
It overflows.
The utility model patent that Authorization Notice No. is CN203559863U, authorized announcement date is 2014.04.23 discloses one
Kind of hydraulic oil pipe bridge plug, hydrostatic pressure device, the positioning and locking being sequentially arranged on center-pole including center-pole and from top to bottom fill
Set, cartridge and guide head, hydrostatic pressure device constitutes driving assembly, positioning and locking device include upper cone, hypocentrum and with
The upper slips of upper cone cooperation and the lower slips of lower cone cooperation and the slips support being placed between upper slips and lower slips, slips
Support is fixed on center-pole by shear pin, and hydrostatic pressure device includes the piston of hollow tubular structures, and upper piston area is provided with inlet opening
Make to form a hydrostatic chamber between piston and center-pole, the liquid in oil pipe is pushed by inlet opening into hydrostatic chamber
Piston and positioning and locking device are moved downward along center-pole, and after cutting shear pin, upper slips and lower slips are expanded outwardly and are engaging in
On tube inner wall, cartridge is compressed axially and radially expands sealing oil pipe, and the locking mode of upper slips and lower slips
Also make cartridge axially and can only compress that the problem of reaching permanent seal cannot be sprung back.
But the sealing station bridging positioning in oil pipe, such as Authorization Notice No. are needed when using the hydraulic oil pipe bridge plug
For CN206144499U, authorized announcement date be 2017.05.03 utility model patent disclose positioned in a kind of blank tubing it is locking
Device, Zhang Tou mechanism and and the sliding block anchor mechanism group that is connect with swollen header structure including the connection of back-off sub, piston and piston
At being anchored sliding block by lifting the wirerope being connected in back-off sub when the positioning fastener reaches oily designated position
The sliding slips of mechanism, which moves down to be anchored on tube inner wall relative to the inclined-plane of slips support ontology, does not realize that the positioning is locking
The anchoring of device.
Currently, existing oil pipe blocking operation is required to set, throw, lower tubular column operation three times of giving up completion oil pipe closure
Construction, and the hydraulic oil pipe bridge plug must cooperate seat card support device to use, and block support it is required that first throwing to sit below tubing string
Device makes its clamping lock in the annular groove between tubing coupling pin thread head, sits card oil pipe for blanking plug and provides initial alignment.Oil pipe
It is often filled by dead oil or incrustation at box cupling, seat card support device positioning is insecure, it is poor plugging effect easily occurs, or even cause to block up
The accident that plug device falls well occurs, and the primary success rate for completing plugging construction is not high, needs to do over again, extends the activity duration.
Utility model content
The purpose of this utility model is to provide a kind of tubing plugs, fixed to solve tubing plug in the prior art
Position difficulty and low success rate of problem.
To achieve the above object, the technical solution of the tubing plug of the utility model is:
Scheme 1: tubing plug includes center-pole, cartridge is equipped on center-pole, driving cartridge is axially pressed
The driving assembly of contracting and positioning and locking device for clamping tube inner wall, the tubing plug further includes centrally disposed bar
It is above used for the anchoring structure of location oil pipe plugging device position and is connect for being connect with rope with lifting giving up for the tubing plug
Head, the anchoring structure include the Fastener for clamping tube inner wall to realize the anchoring of the tubing plug.
The beneficial effects of the utility model are: by the way that anchoring structure is arranged on tubing plug, without being blocked
It is thrown when operation and sits card support device, can be completed by the rope that lifting is connected in back-off sub and set, position and give up,
The job success ratio for effectively increasing tubing plug solves tubing plug location difficulty in the prior art and success rate
Low problem.
Scheme 2: on the basis of scheme 1, the Fastener is sliding slips, and the anchoring structure, which is equipped with, has guidance
The guide portion on inclined-plane, the clamping block, which has, to be slidably matched with the lead-in chamfered of guide portion so as to slide slips relative to guide portion
Slide downward makes the face that is slidably matched for sliding slips and tube inner wall clamping in turn, makes during lifting the tubing plug
Clamping block slide downward and clamping tube inner wall under gravity, realize the anchoring of tubing plug, easy to operate.
Scheme 3: on the basis of scheme 2, the center-pole lower end is equipped with lower slips support, and the guide portion is to be arranged under
The sliding rail of slips support, the sliding slips are equipped with the sliding slot being slidably matched with sliding rail, guarantee the sliding of clamping block on the slide rail
The consistency in direction improves anchoring success rate.
Scheme 4: on the basis of scheme 3, the sliding rail is dovetail groove, further ensures the success rate of anchoring.
Scheme 5: on the basis of scheme 3, the lower slips support is sphenoid, and the cross section of lower slips support is from top to bottom
It is sequentially increased, improves the intensity of lower slips support.
Scheme 6: on the basis of any one of scheme 2- scheme 5, the bottom end of the guide portion is equipped with to be slided for block
The stop part of slips downlink avoids sliding slips from falling off from sliding rail.
Scheme 7: on the basis of any one of scheme 1- scheme 5, the cartridge setting is filled in the positioning and locking
Downside is set, structure is easily achieved.
Scheme 8: on the basis of any one of scheme 1- scheme 5, the anchoring structure lower end is equipped with for guiding the oil
The guide shoe of blockage device downlink, convenient for the downlink of the tubing plug.
Scheme 9: on the basis of any one of scheme 1- scheme 5, the two sides of the cartridge axial direction, which are equipped with, to be protected
The packing element helmet for protecting cartridge, avoids the damage of cartridge.
Scheme 10: on the basis of any one of scheme 1- scheme 5, the back-off sub is equipped with rope socket, the rope socket
Upper end is equipped with the cable nipple in pagoda shape for connecting with rope, is connect by card of restricting with rope socket convenient for wirerope.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the specific embodiment 1 of the tubing plug of the utility model；
Fig. 2 is the structural schematic diagram of the specific embodiment 2 of the tubing plug of the utility model.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
The specific embodiment 1 of the tubing plug of the utility model, as shown in Figure 1, tubing plug includes center-pole 10,
The top of center-pole 10 is equipped with back-off sub 2, and 2 top of back-off sub is connect by screw thread with rope socket 1, and the upper end of rope socket 1 is equipped with
The cable nipple in pagoda shape for connecting with wirerope is arranged with tubular lock ball set on the outer peripheral surface of back-off sub 2
4, lock ball set 4 realizes the connection with back-off sub 2 by the horizontal unlock pin 5 being installed between lock ball set 4 and back-off sub 2
It is fixed.
In the present embodiment, a lock ball support 7, back-off sub 2 are threaded on the outer peripheral surface of the upper end of center-pole 10
Lower end be placed in the blind hole that the upper surface of lock ball support 7 and center-pole 10 is formed, lock ball support 7 is hollow bushing, lock ball support 7
Several horizontally disposed lockholes are offered on the tube wall opposite with back-off sub 2 of upper end, and lockhole is along the axis of center-pole 10
It is arranged circumferentially, a lock ball 6 is mounted in each lockhole, the inner tubal wall of lock ball set 4 is equipped with corresponding with each lock ball 6
The lock ball limit pits of setting pass through lock ball 6 and the limit cooperation realization lock ball support 7 of lock ball limit pits and consolidating for lock ball set 4
Fixed connection.
In the present embodiment, the lower end of lock ball set 4 is threaded with piston 9, and piston 9 and 10 concentric fits of center-pole,
Piston 9 is hollow tubular structures, and 9 upper end of piston offers the inlet opening 25 being connected to in oil pipe, is located on the inner surface of piston 9
It is equipped at the position of 25 downside of inlet opening to 10 direction of center-pole cricoid interior shoulder outstanding, interior shoulder, the piston 9 of piston 9
Inlet opening 25 at inner sidewall, center-pole 10 be placed in the outer peripheral surface above the interior shoulder of piston 9 and lock ball support 7 lower end surface it
Between surround a hydrostatic chamber, the periphery of planar annular and center-pole 10 that the interior shoulder of piston 9 is arranged towards center-pole 10
Sealing ring 8 is equipped between face to guarantee the leakproofness of hydrostatic chamber.
In the present embodiment, one is additionally provided on center-pole 10 towards 9 direction of piston cricoid outer shoulder outstanding, piston 9
Outer shoulder towards between the planar annular being arranged of piston 9 and the inner peripheral surface of piston 9 be equipped with sealing ring 8, avoid the interior platform of piston 9
Part between shoulder and the outer shoulder of center-pole 10 is connected to the annular space that center-pole 10 is surrounded with oil pipe.
In the present embodiment, the downside of the outer shoulder of center-pole 10 is equipped with the lock ring set of one with 10 concentric fits of center-pole
11, the outer peripheral surface of the upper end of lock ring set 11 is threadedly coupled with the lower end of piston 9, the lower end of lock ring set 11 and center-pole 10
Outer peripheral surface between be equipped with a lock ring 12 being sleeved on center-pole 10, lock ring set 11 lower end outer peripheral surface on screw thread connect
It is connected to a lock ring support 13.The cartridge 15 being set on center-pole 10,15 lower end of cartridge are equipped on the downside of lock ring support 13
Equipped with cartridge type slips 16 and the upper slips support 19 being connect with merging with the bottom thread of center-pole 10 with cartridge type slips 16, cartridge type card
Watts 16 are sleeved on center-pole 10, and are tightened cartridge type slips 16 in the outside of center-pole 10 by fixing bolt 18, fixed spiral shell
Fixture nut 17 is threaded on bolt 18, upper slips support 19 is equipped with the sliding way cooperated with cartridge type slips 16, sliding way
The one end extended downwardly is obliquely installed along the axis direction of center-pole 10 from center-pole 10 to oil pipe inner sidewall direction, passes through cartridge type
Slips 16 slides in sliding way is flared out cartridge type slips 16 with clamping tube inner wall.Wherein, piston 9 constitutes driving sealing
The driving assembly that packing element 15 is compressed axially, certainly in other embodiments, the mode that hydro powered also can be selected in driving assembly come
Compression seal packing element 15.
In the present embodiment, a lower slips support 21, and upper slips support 19 and lower slips support are additionally provided on the downside of upper slips support 19
21 be sphenoid, is set in lower slips support 21 there are two sliding rail 23, and sliding rail 23 is dovetail groove, and two sliding rails 23 are along center-pole 10
Circumferencial direction be evenly arranged, the extending direction of sliding rail 23 inclines along the axial direction of center-pole 10 from center-pole 10 to oil pipe direction
Tiltedly, be sliding combined on two sliding rails 23 sliding slips 20, and the lower end of sliding rail 23 be equipped with for stop sliding slips 20 after
Continue the stop part 22 of slide downward, the guide shoe 24 for guiding the tubing plug is equipped on the downside of stop part 22.Lifting the oil
When blockage device, make to slide slips 20 relative to 10 slide downward of center-pole by sliding slips 20 and being slidably matched for sliding rail 23
And under the action of sliding rail 23, the outer peripheral surface for sliding slips 20 and tube inner wall is made to be bonded and be clamped on the inner tubal wall of oil pipe.
Wherein, sliding rail 23 constitutes guide portion, slides the groove bottom wall composition of the sliding slot cooperated on slips 20 with sliding rail 23 and drawing for guide portion
Guiding incline is slidably matched so as to slide slips 20 relative to guide portion slide downward and then make to slide slips 20 and tube inner wall card
The tight face that is slidably matched, sliding slips 20 constitute the Fastener for being used for clamping tube inner wall, sliding slips 20, sliding rail 23 and lower card
Watt support 21 constitutes anchoring structure, and lock ring 12, lock ring set 11 and lock ring support 13 constitute positioning and locking device.
When carrying out oil pipe blocking operation using the tubing plug, first wirerope is fixed on rope socket 1, transfers steel wire
The tubing plug is transferred to the predetermined position in oil pipe to be risen by rope, then above mentions wirerope, upward in the tubing plug
Sliding slips 20 moves down under the gravity of itself along sliding rail 23 while mobile, slide the periphery of slips 20 towards
Oil pipe inner sidewall is mobile, until the inner sidewall of the sliding complete clamping oil pipe of slips 20, the tubing plug is locked in oil at this time
In pipe, wirerope is pulled on, starts that relative displacement occurs with lock ball set 4 in back-off sub 2, makees in the pulling force of back-off sub 2
Under, unlock pin 5 is cut, and back-off sub at this time 2 and the fixed relationship of lock ball set 4 are broken, and back-off sub 2 is relative in
Core bar 10 and lock ball set 4 start to move up, when back-off sub 2 takes off from the blind hole that the upper surface of lock ball support 7 and center-pole 10 is formed
When out, lock ball 6 is dropped into the gap between the upper surface of back-off sub 2 and the upper surface of center-pole 10, and lock ball set 4 loses lock
The limitation of ball 6, piston 9 are unlocked, and the liquid in oil pipe starts to enter in hydrostatic chamber from inlet opening, and piston 9 is by this at this time
It starts to work under the head of liquid of depth, head of liquid acts on the upper surface of interior shoulder of piston 9, lock ball set 4 and piston 9
Start to move downward, pushes lock ring set 11 and lock ring 12 along 10 downlink of center-pole, and be pressed down against cartridge 15, push simultaneously
The upward slips support 19 of cartridge type slips 16 is close, and cartridge type slips 16 is made to expand outwardly and be engaging in along the sliding way of upper slips support 19
On tube inner wall, while cartridge 15 is compressed axially and radial dilatation is bonded purpose to realize sealing with oil pipe inner sidewall,
It blocks operation to complete, and can only be compressed since the setting of lock ring set 11, lock ring 12 and lock ring support 13 makes cartridge 15 axially
It cannot spring back to achieve the purpose that permanent seal.
Preferably, about 15 two sides of cartridge are equipped with packing element helmet 14, and packing element helmet 14 is deformed in cartridge 15
When be attached on tube inner wall to protect cartridge 15.
Preferably, the bottom of lower slips support 21 is equipped with guide shoe to guide downlink of the tubing plug in oil pipe.
Preferably, for the ease of the progress for operation of giving up, one is offered along the vertical direction on the outer peripheral surface of back-off sub 2
The keyway 26 of arrangement, one is provided in keyway 26 gives up and cut off 3, lock ball set 4 be equipped with for give up cut off 3 pass through give up and cut
Pin hole gives up when the tubing plug is in initial position and cuts off 3 upper ends for being in keyway 26, by lifting back-off sub 2
So that back-off sub 2 continues up, gives up and cuts off 3 relative displacements to keyway lower part, given up using pulling force cutting and cut off 3,
Realization is given up.
The specific embodiment 2 of the tubing plug of the utility model, the specific reality with the tubing plug of the utility model
The difference for applying example 1 is only that: as shown in Fig. 2, sliding rail 223 is in gusset shape and is arranged circumferentially outer peripheral surface in center-pole 210
On, and the axis of the lower end edge center-pole 210 of the bevel edge of sliding rail 223 is obliquely installed from center-pole 210 to oil pipe.
The specific embodiment 3 of the tubing plug of the utility model, the specific reality with the tubing plug of the utility model
The difference for applying example 1 is only that: cartridge type slips is arranged above cartridge.
In the other embodiments of the tubing plug of the utility model, any amounts such as three, four are can be set in sliding rail,
Sliding slips can also be correspondingly arranged any amounts such as three, four；The arbitrary numbers such as two, three can be set in the quantity of lock ball
Amount.
Claims (10)
1. tubing plug, including center-pole, cartridge is equipped on center-pole, the driving that driving cartridge is compressed axially
Component and positioning and locking device for clamping tube inner wall, it is characterised in that: the tubing plug further includes being arranged in
For the anchoring structure of location oil pipe plugging device position and for connecting with center-pole to lift the tubing plug on core bar
Back-off sub, the anchoring structure include the Fastener for clamping tube inner wall to realize the anchoring of the tubing plug.
2. tubing plug according to claim 1, it is characterised in that: the Fastener is sliding slips, the anchoring
Structure is equipped with the guide portion with lead-in chamfered, and the clamping block, which has, to be slidably matched so that sliding with the lead-in chamfered of guide portion
Dynamic slips is relative to guide portion slide downward and then makes the face that is slidably matched for sliding slips and tube inner wall clamping.
3. tubing plug according to claim 2, it is characterised in that: the center-pole lower end is equipped with lower slips support, institute
Stating guide portion is the sliding rail that lower slips support is arranged in, and the sliding slips is equipped with the sliding slot being slidably matched with sliding rail.
4. tubing plug according to claim 3, it is characterised in that: the sliding rail is dovetail groove.
5. tubing plug according to claim 3, it is characterised in that: the lower slips support is sphenoid, and lower slips
The cross section of support is sequentially increased from top to bottom.
6. the tubing plug according to any one of claim 2-5, it is characterised in that: the bottom end of the guide portion is equipped with
Stop part for block sliding slips downlink.
7. tubing plug according to any one of claims 1-5, it is characterised in that: the cartridge is arranged in institute
It states on the downside of positioning and locking device.
8. tubing plug according to any one of claims 1-5, it is characterised in that: the anchoring structure lower end is equipped with
For guiding the guide shoe of the tubing plug downlink.
9. tubing plug according to any one of claims 1-5, it is characterised in that: the cartridge axial direction
Two sides be equipped with protection cartridge packing element helmet.
10. tubing plug according to any one of claims 1-5, it is characterised in that: the back-off sub is equipped with
Rope socket, the rope socket upper end are equipped with the cable nipple in pagoda shape for connecting with rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820275934.XU CN208236381U (en) | 2018-02-26 | 2018-02-26 | Tubing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820275934.XU CN208236381U (en) | 2018-02-26 | 2018-02-26 | Tubing plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208236381U true CN208236381U (en) | 2018-12-14 |
Family
ID=64588496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820275934.XU Active CN208236381U (en) | 2018-02-26 | 2018-02-26 | Tubing plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208236381U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252555A (en) * | 2019-07-19 | 2019-09-20 | 江阴市液压油管有限公司 | A kind of hydraulic oil pipe spraying suspender |
| CN110454112A (en) * | 2019-07-29 | 2019-11-15 | 中国海洋石油集团有限公司 | A kind of coiled tubing test blanking plug |
| CN111894518A (en) * | 2020-07-28 | 2020-11-06 | 合力（天津）能源科技股份有限公司 | Ball-throwing type oil pipe blocking device |
| CN113107417A (en) * | 2020-01-13 | 2021-07-13 | 中国石油天然气股份有限公司 | Soluble releasing plug |
| CN114075939A (en) * | 2022-01-07 | 2022-02-22 | 胜利油田北方实业集团有限责任公司 | Oil pipe plug convenient to operation |
-
2018
- 2018-02-26 CN CN201820275934.XU patent/CN208236381U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252555A (en) * | 2019-07-19 | 2019-09-20 | 江阴市液压油管有限公司 | A kind of hydraulic oil pipe spraying suspender |
| CN110252555B (en) * | 2019-07-19 | 2024-03-29 | 江苏耀坤液压股份有限公司 | Hydraulic oil pipe spraying lifting appliance |
| CN110454112A (en) * | 2019-07-29 | 2019-11-15 | 中国海洋石油集团有限公司 | A kind of coiled tubing test blanking plug |
| CN113107417A (en) * | 2020-01-13 | 2021-07-13 | 中国石油天然气股份有限公司 | Soluble releasing plug |
| CN113107417B (en) * | 2020-01-13 | 2022-05-10 | 中国石油天然气股份有限公司 | Soluble releasing plug |
| CN111894518A (en) * | 2020-07-28 | 2020-11-06 | 合力（天津）能源科技股份有限公司 | Ball-throwing type oil pipe blocking device |
| CN111894518B (en) * | 2020-07-28 | 2022-03-11 | 合力（天津）能源科技股份有限公司 | Ball-throwing type oil pipe blocking device |
| CN114075939A (en) * | 2022-01-07 | 2022-02-22 | 胜利油田北方实业集团有限责任公司 | Oil pipe plug convenient to operation |
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