CN110388192A - A kind of retrievable tubing plug - Google Patents
A kind of retrievable tubing plug Download PDFInfo
- Publication number
- CN110388192A CN110388192A CN201910752914.6A CN201910752914A CN110388192A CN 110388192 A CN110388192 A CN 110388192A CN 201910752914 A CN201910752914 A CN 201910752914A CN 110388192 A CN110388192 A CN 110388192A
- Authority
- CN
- China
- Prior art keywords
- lock ring
- pipe
- seat
- shear pin
- slips
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012856 packing Methods 0.000 claims abstract description 12
- 230000037237 body shape Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000012530 fluid Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
A kind of retrievable tubing plug, the lower part of pipe is locked together with the upper tine of release pipe, lock ring cover for seat is on release pipe, setting lock ring snaps on the upper outer unidirectional tooth, locking ring is in outside the undergauge section on release pipe top, connection lock ring snaps on locking pipe, locking pipe, pipe sleeve is discharged outside central axis, entangle connection lock ring in the lower part of release pipe, baffle ring is connected to the lower part of release pipe, shear pin seat is connected to the lower part of central axis, connecting pipe box are mounted in release pipe, outside shear pin seat, lock ring seat is under the upper internal threaded of connecting tube, it unseals shear pin and passes through connecting tube and inject and discharge in pipe, setting shear pin passes through connecting tube and injects in shear pin seat, silk plug is mounted on the lower part of connecting tube, rubber tube seat, packing element, it is outer that cone is sleeved on locking pipe, the lower part of rubber tube seat and the top of connecting tube connect, slips support is through outside central axis, Slips support is connect with locking pipe, and slips top is articulated in the hanging groove of slips support lower part, and the lower part of slips is put into the cone tank on cone top.
Description
Technical field
The present invention is a kind of capping tools of oilfield, is a kind of retrievable tubing plug.
Background technique
Risen in Tubing During Running in oil-water well well workover, borehole pressure is high sometimes, and well liquid is sprayed out of oil pipe, prevent oil-water well from
Operation needs that operation could be continued after carrying out kill-job construction to oil-water well.Kill-job is just equipped with high density well control fluids and squeezes into pit shaft,
High density well control fluids are made to be higher than strata pressure in the back pressure for penetrating spud section formation of pit shaft.Occur being exactly to take pressure when blowout at present
The method of well makes well head pressure zero, realizes safe construction.If oil-water well wants kill-job, kill-job construction workload will increase, need
Kill-job equipment and goods and materials are wanted, the construction time is long, a large amount of manpower and material resources is consumed, since the pit shaft back pressure that high density well control fluids are formed is high
In strata pressure, high density well control fluids can flow backward to stratum, and well killing fluid can damage stratum, reduce oil well output, reduce well note
Water can not achieve the quick well workover of oil-water well.Oil recovery high density well control fluids kill-job mode prevent blowout at the scene and can not and
When implement, just when there is blowout sign in the well of well workover, it is possible to have little time kill-job, be easy to happen gas blowout accident, cause weight
Big economic loss.
Summary of the invention
The purpose of the present invention is designing a kind of retrievable tubing plug, oil pipe lower part can be blocked, prevent well liquid from oil
It is sprayed in pipe, does not need the safe well workover of kill-job operation energy and play oil pipe, reduce flow chart, prevent stratum impaired, prevent
Gas blowout accident.
The object of the present invention is achieved like this: a kind of retrievable tubing plug, including top connection, central axis, slips
Support, locking pipe, slips, cone, packing element, rubber tube seat, setting lock ring, lock ring seat, release pipe, deblocking shear pin, connection lock ring, gear
Ring, setting shear pin, shear pin seat, connecting tube, silk plug, setting lock ring have an opening, when internal stress the outer ring of setting lock ring can become larger,
The inner wall of setting lock ring is equipped with unidirectional teeth, and connection lock ring has an opening, and the outer ring of connection lock ring can become larger when internal stress, connects
The inner wall of lock ring is equipped with unidirectional teeth, and outer unidirectional tooth matched with teeth unidirectional inside setting lock ring is arranged at the lower part for locking pipe,
It locks upper outer unidirectional teeth portion position described in the lower part of pipe and is provided with separated slot, make the lower part for locking pipe at a body shape, under central axis
Have on portion's screw thread and connect the matched lower outer unidirectional tooth of unidirectional teeth inside lock ring, there is undergauge section in the upper end for discharging pipe, described
The outer diameter of undergauge section be equal to the internal diameter of setting lock ring, the top for discharging pipe is provided with slot, make to discharge the top of pipe into a body shape,
It locks in slot described in the lower bar body insertion of pipe, discharges in separated slot described in the upper strips body insertion of pipe, lock ring cover for seat
Managed mounted in release, setting lock ring snaps onto the upper outer unidirectional tooth) on, locking ring is in outside the undergauge section, connection lock
Ring snaps on the lower outer unidirectional tooth, and outside central axis, connection lock is entangled in the lower part for discharging pipe for locking pipe, release pipe sleeve
Ring, baffle ring are connected to the lower part of release pipe, and baffle ring holds connection lock ring, and shear pin seat is connected in the lower thread of central axis, even
Adapter tube is sleeved on release and manages, outside shear pin seat, and lock ring seat is under the upper internal threaded of connecting tube, and deblocking shear pin passes through connecting tube
Inject release pipe in, setting shear pin pass through connecting tube inject shear pin seat in, silk plug is mounted on the lower part of connecting tube, make shear pin seat with
Cavity is formed between silk plug, rubber tube seat, packing element, cone are sleeved on outside locking pipe, and the lower part of rubber tube seat and the top of connecting tube connect
It connects, is limited in setting lock ring between rubber tube seat and lock ring seat, slips support is through outside central axis, and slips support is upper with locking pipe
Hanging groove is arranged at portion's connection, the lower part of slips support, and the top of slips is articulated in the hanging groove of slips support lower part, and the lower part of slips is put into cone
Slips, which generates, in the cone tank on body top, when the distance between cone and slips support being enable to change moves radially, under top connection
Portion and the top of central axis connect.
It is anchored and seals in oil pipe the beneficial effects of the present invention are: can be generated behind the predetermined position inside tripping in oil pipe
Oil pipe lower part is blocked, prevents well liquid from spraying out of oil pipe by portion channel, is not needed the safe well workover of kill-job operation energy and is played oil pipe,
Flow chart is reduced, prevents stratum impaired, prevents gas blowout accident, there is significant economic benefit.
Detailed description of the invention
Attached drawing 1 is the installation diagram of the embodiment of the present invention.
Attached drawing 2 is the lower part half sectional view of part 4 in attached drawing 1.
Attached drawing 3 is the half sectional view of part 11 in attached drawing 1.
Specific embodiment
The embodiment of the present invention is illustrated with reference to the accompanying drawing.
The embodiment of the present invention include top connection 1, central axis 2, slips support 3, locking pipe 4, slips 5, cone 6, packing element 7,
Rubber tube seat 8, setting lock ring 9, lock ring seat 10, release pipe 11, deblocking shear pin 12, connection lock ring 13, baffle ring 14, setting shear pin 15,
Shear pin seat 16, connecting tube 17, silk plug 19, setting lock ring 9 have an opening, when internal stress the outer ring of setting lock ring 9 can become larger, it is setting
The inner wall of lock ring 9 is equipped with unidirectional teeth, and connection lock ring 13 has an opening, and the outer ring of connection lock ring 13 can become larger when internal stress, even
The inner wall for connecing lock ring 13 is equipped with unidirectional teeth, and outer list matched with the setting lock ring unidirectional teeth in 9 inside is arranged at the lower part of locking pipe 4
To tooth 4-1, locks the upper outer position unidirectional tooth 4-1 described in the lower part of pipe 4 and be provided with separated slot 4-2, make the lower part for locking pipe 4 at item
Body shape has and connect the 13 inside matched lower outer unidirectional tooth 2-1 of unidirectional teeth of lock ring, release on the lower thread of central axis 2
There is undergauge section 11-1 in the upper end of pipe 11, and the outer diameter of the undergauge section 11-1 is equal to the internal diameter of setting lock ring 9, discharges the upper of pipe 11
Portion is provided with slot 11-2, makes the top for discharging pipe 11 at a body shape, locks the lower bar body insertion of the pipe 4 slot 11-2
In, in the upper strips body insertion of the release pipe 11 separated slot 4-2, lock ring seat 10 is sleeved on release pipe 11, and setting lock ring 9 is detained
It connects on the upper outer unidirectional tooth 4-1, connection lock ring 13 snaps on the lower outer unidirectional tooth 2-1, and locking ring 9 is in institute
Outside the undergauge section 11-1 stated, locking pipe 4, release pipe 11 are sleeved on outside central axis 2, and connection lock ring is entangled in the lower part of release pipe 11
13, baffle ring 14 is connected to the lower part of release pipe 11, and baffle ring 14 holds connection lock ring 13, and shear pin seat 16 is connected under central axis 2
On portion's screw thread, connecting tube 17 is sleeved on release pipe 11, outside shear pin seat 16, lock ring seat 10 be in connecting tube 17 upper internal threaded it
Under, the connecting tube 17 that deblocking shear pin 12 passes through injects in release pipe 11, and setting shear pin 15 passes through connecting tube 17 and injects in shear pin seat 16,
Silk plug 19 is mounted on the lower part of connecting tube 17, makes to form cavity 18 between shear pin seat 16 and silk plug 19, rubber tube seat 8, packing element 7, cone
Body 6 is sleeved on outside locking pipe 4, and the lower part of rubber tube seat 8 is connect with the top of connecting tube 17, and setting lock ring 9 is made to be limited in packing element
Between seat 8 and lock ring seat 10, slips support 3 is through outside central axis 2, and slips support 3 is connect with the top of locking pipe 4, under slips support 3
There is hanging groove in portion, and the top of slips 5 is articulated in the hanging groove of 3 lower part of slips support, and the lower part of slips 5 is put into the taper on 6 top of cone
In slot, the generation of slips 5 is moved radially when the distance between cone 6 and slips support 3 being enable to change, the lower part and center of top connection 1
The top of axis 2 connects.
The present invention is put in oil pipe from well head, connects water injection pipe, and into oil pipe, water filling pushes downlink of the present invention, shear pin seat 16
Under cavity 18 be low pressure, when the present invention goes downwards to design position about 2 central axis receiving the pressure difference (pressure difference needed
Determined by the size and material of setting shear pin 15) cut setting shear pin 15, top connection 1, central axis 2, slips support 3 relatively under
Row, the distance between slips support 3 and cone 6 shorten, and slips 5, which radially expands, to be anchored on tube inner wall, and pressure difference also presses packing element 7
Contracting blocking oil pipe lower part, the compression of packing element 7 and 5 anchoring states of slips are fixed up by setting lock ring 9, and (setting lock ring 9 is in locking pipe 4
On can only uplink be unable to downlink), anchoring and sealing state will not be lost by above mentioning after oil pipe pressure difference becomes smaller, prevent its well liquid to
Upper flowing, prevents blowout.When needing to take out the present invention, being connected to top connection 1 with tool and pulled up makes to unseal shear pin
12 are pulled off, under the action of connecting lock ring 13, release pipe 11 with central axis uplink, discharge 11 top of pipe undergauge section 11-1 it
Under shoulder (tapered shoulders) enter in setting lock ring 9, expand setting lock ring 9 and disengaged with locking pipe 4, cone 6, packing element 7 can
With downlink, packing element 7 is withdrawn, and distance becomes larger between slips support 3 and cone 6, and the withdrawal of slips 5 is disanchored.
Claims (1)
1. a kind of retrievable tubing plug, including top connection (1), central axis (2), slips support (3), locking pipe (4), slips
(5), cone (6), packing element (7), rubber tube seat (8), setting lock ring (9), lock ring seat (10), release pipe (11), deblocking shear pin (12),
Lock ring (13), baffle ring (14), setting shear pin (15), shear pin seat (16), connecting tube (17), silk plug (19) are connected, it is characterized in that: seat
Locking ring (9) has an opening, when internal stress the outer ring of setting lock ring (9) can become larger, the inner wall of setting lock ring (9) is equipped with unidirectional tooth
Tooth, connection lock ring (13) have an opening, and the outer ring of connection lock ring (13) can become larger when internal stress, and the inner wall of connection lock ring (13) is set
There are unidirectional teeth, outer unidirectional tooth (4-1) matched with the internal unidirectionally teeth of setting lock ring (9), lock are arranged at the lower part of locking pipe (4)
Upper outer unidirectional tooth (4-1) position described in the lower part of fixed pipe (4) is provided with separated slot (4-2), makes the lower part of locking pipe (4) at a body
Shape has and connect the matched lower outer unidirectional tooth (2-1) of the internal unidirectional teeth of lock ring (13) on the lower thread of central axis (2),
The upper end of release pipe (11) has undergauge section (11-1), and the outer diameter of the undergauge section (11-1) is equal to the internal diameter of setting lock ring (9),
The top of release pipe (11) is provided with slot (11-2), makes the top of release pipe (11) at a body shape, the lower bar body of locking pipe (4)
The insertion slot (11-2) is inner, and the separated slot (4-2) that the upper strips body insertion of release pipe (11) is described is inner, lock ring seat (10)
It is sleeved on release pipe (11), setting lock ring (9) snaps on the upper outer unidirectional tooth (4-1), and connection lock ring (13) snaps onto
On the lower outer unidirectional tooth (2-1), locking ring (9) is in the undergauge section (11-1) outside, locking pipe (4), release pipe
(11) it is sleeved on central axis (2) outside, connection lock ring (13) is entangled in the lower part of release pipe (11), and baffle ring (14) is connected to release pipe
(11) lower part, baffle ring (14) hold connection lock ring (13), and shear pin seat (16) is connected in the lower thread of central axis (2), even
Adapter tube (17) be sleeved on release pipe (11), shear pin seat (16) outside, lock ring seat (10) be in connecting tube (17) upper internal threaded it
Under, deblocking shear pin (12) is inner across connecting tube (17) reeve release pipe (11), and setting shear pin (15) is injected across connecting tube (17)
Shear pin seat (16) is inner, and silk plug (19) is mounted on the lower part of connecting tube (17), makes to be formed between shear pin seat (16) and silk plug (19) empty
Chamber (18), rubber tube seat (8), packing element (7), cone (6) are sleeved on locking pipe (4) outside, the lower part and connecting tube (17) of rubber tube seat (8)
Top connection, be limited in setting lock ring (9) between rubber tube seat (8) and lock ring seat (10), slips support (3) is through central axis
(2) outside, slips support (3) is connect with the top of locking pipe (4), and hanging groove, the top mounting of slips (5) are arranged at the lower part of slips support (3)
In the hanging groove of slips support (3) lower part, the lower part of slips (5) is put into the cone tank on cone (6) top, makes cone (6) and card
Slips (5), which can generate, when the distance between Wa Tuo (3) changes moves radially, the lower part of top connection (1) and the top of central axis (2)
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910752914.6A CN110388192A (en) | 2019-08-15 | 2019-08-15 | A kind of retrievable tubing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910752914.6A CN110388192A (en) | 2019-08-15 | 2019-08-15 | A kind of retrievable tubing plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110388192A true CN110388192A (en) | 2019-10-29 |
Family
ID=68288800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910752914.6A Pending CN110388192A (en) | 2019-08-15 | 2019-08-15 | A kind of retrievable tubing plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110388192A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB881647A (en) * | 1959-06-29 | 1961-11-08 | Franlkin Leyburn Lebus | Apparatus for retrieving a drill collar stuck in a well bore |
| CA2615737A1 (en) * | 2005-07-04 | 2007-01-11 | Jian Xu | A retrievable bridge plug |
| CN201297154Y (en) * | 2008-10-21 | 2009-08-26 | 张永祥 | Oil well blocking device |
| CN201354619Y (en) * | 2009-02-27 | 2009-12-02 | 盐城市汇浩石化机械有限公司 | Removable bridge plug |
| CN201568017U (en) * | 2009-12-25 | 2010-09-01 | 濮阳市亿隆石油机械有限公司 | Cementing plug pack-off device for exploration and development of oilfield |
| CN203499630U (en) * | 2013-08-13 | 2014-03-26 | 江苏汇浩石油装备有限公司 | Hydraulic sealing packer |
| WO2015009987A1 (en) * | 2013-07-19 | 2015-01-22 | Schlumberger Canada Limited | Drillable plug |
| CN205778713U (en) * | 2016-05-31 | 2016-12-07 | 东营市兆鑫工贸有限责任公司 | A kind of hydraulic packer |
| CN206571462U (en) * | 2017-02-23 | 2017-10-20 | 中石化石油工程技术服务有限公司 | A kind of Multifunctional underwell valve |
| CN210422562U (en) * | 2019-08-15 | 2020-04-28 | 东营宏博石油装备有限公司 | Removable oil pipe plug |
-
2019
- 2019-08-15 CN CN201910752914.6A patent/CN110388192A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB881647A (en) * | 1959-06-29 | 1961-11-08 | Franlkin Leyburn Lebus | Apparatus for retrieving a drill collar stuck in a well bore |
| CA2615737A1 (en) * | 2005-07-04 | 2007-01-11 | Jian Xu | A retrievable bridge plug |
| CN201297154Y (en) * | 2008-10-21 | 2009-08-26 | 张永祥 | Oil well blocking device |
| CN201354619Y (en) * | 2009-02-27 | 2009-12-02 | 盐城市汇浩石化机械有限公司 | Removable bridge plug |
| CN201568017U (en) * | 2009-12-25 | 2010-09-01 | 濮阳市亿隆石油机械有限公司 | Cementing plug pack-off device for exploration and development of oilfield |
| WO2015009987A1 (en) * | 2013-07-19 | 2015-01-22 | Schlumberger Canada Limited | Drillable plug |
| CN203499630U (en) * | 2013-08-13 | 2014-03-26 | 江苏汇浩石油装备有限公司 | Hydraulic sealing packer |
| CN205778713U (en) * | 2016-05-31 | 2016-12-07 | 东营市兆鑫工贸有限责任公司 | A kind of hydraulic packer |
| CN206571462U (en) * | 2017-02-23 | 2017-10-20 | 中石化石油工程技术服务有限公司 | A kind of Multifunctional underwell valve |
| CN210422562U (en) * | 2019-08-15 | 2020-04-28 | 东营宏博石油装备有限公司 | Removable oil pipe plug |
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