CN105156061B - Underground washable well water injection insertion pipe sealing device - Google Patents
Underground washable well water injection insertion pipe sealing device Download PDFInfo
- Publication number
- CN105156061B CN105156061B CN201510615672.8A CN201510615672A CN105156061B CN 105156061 B CN105156061 B CN 105156061B CN 201510615672 A CN201510615672 A CN 201510615672A CN 105156061 B CN105156061 B CN 105156061B
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- sheath
- main body
- body joint
- internal diameter
- lower contact
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- 238000007789 sealing Methods 0.000 title claims abstract description 40
- 235000020681 well water Nutrition 0.000 title claims abstract description 17
- 239000002349 well water Substances 0.000 title claims abstract description 17
- 238000002347 injection Methods 0.000 title abstract description 10
- 239000007924 injection Substances 0.000 title abstract description 10
- 230000037431 insertion Effects 0.000 title 1
- 238000003780 insertion Methods 0.000 title 1
- 238000002627 tracheal intubation Methods 0.000 claims description 28
- 238000005406 washing Methods 0.000 claims description 17
- 239000000428 dust Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 4
- 238000011010 flushing procedure Methods 0.000 description 9
- 230000008021 deposition Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000011001 backwashing Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Cleaning In General (AREA)
Abstract
The invention belongs to the technical field of oilfield separate layer water injection development, and relates to a downhole washable well water injection cannula sealing device which comprises a tubular main body joint, a sheath and a lower joint, wherein the inner diameters of the sheath and the lower joint are equal, the inner diameter of the tubular main body joint is gradually changed from the lower inner diameter to the upper inner diameter, and the minimum inner diameter of the tubular main body joint is equal to the inner diameters of the sheath and the lower joint; still be equipped with the mounting hole that pierces through the pipe wall on the pipe wall of main part joint, be equipped with the check valve in this mounting hole, make the main part joint by the pipe wall outside to the inside one-way conduction of pipe wall, this kind of underground washable well water injection intubate sealing device can satisfy to divide the concentric double-barrelled intubate of well sealed sealing of dividing into of well when, can also effectively solve the sealed mechanism of dividing into of conventional concentric double-barrelled branch and lead to easy scale deposit of intubate and junk deposit because of can't carrying out the self-cleaning, the problem that final intubate sealing member became invalid, strengthen the sealing reliability of intubate sealing member, improve the concentric double-barrelled operation success rate of dividing into.
Description
Technical field
The invention belongs to separated-zone water infection oil field development technique field, and in particular to a kind of underground washing well water filling intubation sealing
Device.
Background technology
Changqing oilfields recovered water water quality inferiority, corrosivity are strong at present, cause recovered water dispensing well to survey tune and are hampered rate height；It is simultaneously existing
There is zonal injection technology to need to carry out survey tune, its is costly and can not reflect water injection well water filling dynamic in real time.
A kind of concentric double pipe dispensing technology is have studied for this, has evaded the problem of downhole measurement adjusting is hampered, realizes dispensing Jing Jing
The transformation that tune is surveyed on ground automatically is transferred in lower survey, further improves zonal injection technology technological system.But the technology exist sealing mechanism without
Method carries out self-cleaning, and water injection well water injection time is long, in addition recovered water water quality inferiority, is intubated easy fouling and junk deposition at sealing,
Do not clean for a long time, cause seal blow-by, seal failure, the final concentric double pipe that influences dispenses effect.
The content of the invention
The problem of can not carrying out self-cleaning present invention aim to address the two-tube dispensing sealing mechanism of conventional concentric, enhancing is inserted
The sealing reliability of seals, improve concentric double pipe dispensing success rate.
Therefore, the invention provides a kind of underground washing well water filling intubation seal device, including be sequentially connected with from top to bottom
Tubulose main body joint, sheath and lower contact, the sheath of described tubulose and the internal diameter of lower contact are equal, described tubulose
The internal diameter of main body joint is gradual change shape, is become larger by lower and upper internal diameter, and its minimum diameter is equal to the interior of sheath and lower contact
Footpath；The mounting hole for penetrating tube wall is additionally provided with the tube wall of described main body joint, the mounting hole is built with ball-and-seat so that main body
Joint is by tube wall outside to one-way conduction inside tube wall.
Described main body inner nosepiece wall be by it is lower and on annular step it is trapezoidal, the cascade ring internal diameter of foot be equal to sheath and
The internal diameter of lower contact.
The described inner wall lower of main body joint and the upper inside wall of lower contact is provided with dust ring, described sheath
Upper inside wall and bottom are mounted on sealing gasket.
Described sealing gasket position V-type combination sealing pad, the V-type mouth of the V-type combination sealing pad of the upper inside wall of sheath upward,
The V-type mouth down of the V-type combination sealing pad of the inner wall lower of sheath.
The lower end of the sheath of described tubulose and upper end are equipped with female thread into interior connecting portion, under described main body joint
End and lower contact upper end are equipped with external screw thread, and main body joint lower end and lower contact upper end are connected through a screw thread above and below sheath respectively
End, and run through in screw connection point with connecting pin and fixed.
Beneficial effects of the present invention：This underground washing well water filling intubation seal device of the present invention can meet to dispense well
While concentric double pipe dispensing intubation sealing, can also effectively solve the two-tube dispensing sealing mechanism of conventional concentric because that can not carry out certainly
Clean and cause to be intubated easy fouling and junk deposition at sealing, final the problem of being intubated seal fails, enhancing intubation seal
Sealing reliability, improve concentric double pipe dispensing job success ratio, realize oil field dispensing well Efficient Development effect.
Brief description of the drawings
The present invention is described in further details below with reference to accompanying drawing.
Fig. 1 is the structural representation of underground washing well water filling intubation seal device.
Fig. 2 is operating diagram of the underground washing well water filling intubation seal device in process pipe string.
Description of reference numerals：1st, main body joint；2nd, ball-and-seat；3rd, dust ring；4th, sheath；5th, sealing gasket；6th, connecting pin；
7th, lower contact；8th, outer layer oil pipe；9th, level pressure distributor；10th, intubation seal device；11st, screen casing；12nd, plug；13rd, backwashing wells
Plugging device；14th, internal layer oil pipe；15th, it is intubated.
Embodiment
Embodiment 1：
The present embodiment provides a kind of underground washing well water filling intubation seal device, as shown in figure 1, including from top to bottom sequentially
Main body joint 1, sheath 4 and the lower contact 7 of the tubulose of connection, the sheath 4 of described tubulose is equal with the internal diameter of lower contact 7, institute
The internal diameter of the main body joint 1 for the tubulose stated is gradual change shape, is become larger by lower and upper internal diameter, and its minimum diameter is equal to sheath 4
With the internal diameter of lower contact 7；Be additionally provided with the mounting hole for penetrating tube wall on the tube wall of described main body joint 1, the mounting hole built with
Ball-and-seat 2 so that main body joint 1 is by tube wall outside to one-way conduction inside tube wall.
This underground washing well water filling intubation seal device of the present embodiment, it can be used in anti-flushing well operation, its is specific
Constructing operation mode is first according to connection tubing string, outer oil shown in Fig. 2 as shown in Fig. 2 Fig. 2 is the mode of concentric double pipe dispensing
Level pressure distributor 9 and this intubation seal device 10 of the present invention, the lower end of outer layer oil pipe 8 connection screen casing are connected on the tubing string of pipe 8
11 and plug 12, there are two sections of backwashing wells plugging devices 13 outside outer layer oil pipe 8, the position of level pressure distributor 9 is in two sections of backwashing wells
Between plugging device 13；There is internal layer oil pipe 14 in outer layer oil pipe 8, the intubation 15 of the bottom of internal layer oil pipe 14 passes through intubation seal device
10, the wherein external diameter of internal layer oil pipe 14 is equal to the internal diameter of intubation seal device 10, i.e., equal to sheath 4 and the internal diameter of lower contact 7.
When anti-flushing well, base sealed packer is suppressed first, tests envelope injection test；Then flushing fluid is downward by casing annulus, warp
Continue downwards after crossing the well-flushing passage of backwashing wells plugging device 13.
The four way valve of two layers of oil pipe annular space upper end inside and outside closing, proceed by the washing and cleaning operation of internal layer oil pipe 14, well-flushing
Liquid is entered inside oil pipe by screen casing 11, and because the lower end of this intubation seal device 10 of the present invention seals, now detergent remover is by inserting
The lower end of pipe 15, which enters, continues upwardly into internal layer oil pipe 14, and washing and cleaning operation is carried out to internal layer oil pipe 14, by internal layer oil after having cleaned
The upper end of pipe 14 returns to ground.In the presence of the four way valve of inside and outside two layers of oil pipe annular space upper end is closed, entered by level pressure distributor 9
The route for entering inside and outside two layers of oil pipe annular space cleaning annular space is obstructed；
The four way valve of the upper end of internal layer oil pipe 14 is closed, proceeds by the washing and cleaning operation of inside and outside two layers of oil pipe annular space, well-flushing
Liquid by level pressure distributor 9 enter inside and outside two layers of oil pipe annular space, carry out washing and cleaning operation, ground is returned to by upper end after the completion of cleaning.
In the presence of the four way valve of the upper end of internal layer oil pipe 14 is closed, entered by screen casing 11 inside oil pipe, and then enter internal layer oil pipe
This route of 14 cleanings is obstructed.
Inside and outside the cleaning in the washing and cleaning operation of two layers of oil pipe annular space, due to the presence of ball-and-seat 2 in intubation seal device 10,
The flushing fluid of casing annulus can also be entered in intubation seal device 10 by ball-and-seat 2, because the internal diameter of main body joint 1 is gradual change
Shape, so ensure that the unimpeded of route, the fouling at the sealing of intubation seal device 10 and deposition junk can thus be carried out
Cleaning, as the flushing fluid of inside and outside two layers of oil pipe annular space finally flows out ground.
Embodiment 2：
On the basis of embodiment 1, the present embodiment is further illustrated, and in the present embodiment, the inwall of main body joint 1 is served as reasons
It is lower and on annular step it is trapezoidal, the cascade ring internal diameter of foot is equal to sheath 4 and the internal diameter of lower contact 7.The trapezoidal shape of annular step
Shape so that the inwall of main body joint 1 does not contact with each other with intubation 15, is thus filled for flushing fluid by ball-and-seat 2 to intubation sealing
Put the fouling at 10 sealing and deposition junk is cleaned, there is provided condition and space.
In order to ensure the sealing of single unit system, in the present embodiment, the inner wall lower of main body joint 1 and the inwall of lower contact 7
Top is provided with dust ring 3, and the upper inside wall of described sheath 4 and bottom are mounted on sealing gasket 5,5 V-type groups of sealing gasket
Sealing gasket is closed, upward, the V-type combination of the inner wall lower of sheath 4 is close for the V-type mouth of the V-type combination sealing pad of the upper inside wall of sheath 4
The V-type mouth down of packing.
In order to ensure the stability of integral sealing means so that connected between its all parts reliably, in the present embodiment, pipe
The lower end of the sheath 4 of shape and upper end are equipped with female thread into interior connecting portion, on the described lower end of main body joint 1 and lower contact 7
End is equipped with external screw thread, and the lower end of main body joint 1 and the upper end of lower contact 7 are connected through a screw thread the upper and lower side of sheath 4 respectively, and in screw thread
Connecting portion is with connecting pin 6 through fixation.
In summary, this underground washing well water filling intubation seal device of the invention can meet to dispense well concentric double pipe
While dispensing intubation sealing, can also effectively solve the two-tube dispensing sealing mechanism of conventional concentric and be led because self-cleaning can not be carried out
Easy fouling and junk deposition at intubation sealing are caused, final the problem of being intubated seal fails, the sealing of enhancing intubation seal can
By property, concentric double pipe dispensing job success ratio is improved, realizes the Efficient Development effect of oil field dispensing well.
It is exemplified as above be only to the present invention for example, do not form the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (3)
1. a kind of underground washing well water filling intubation seal device, including the main body joint (1) for the tubulose being sequentially connected with from top to bottom,
Sheath (4) and lower contact (7), it is characterised in that：The sheath (4) of described tubulose and the internal diameter of lower contact (7) are equal, described
The internal diameter of the main body joint (1) of tubulose is gradual change shape, is become larger by lower and upper internal diameter, and its minimum diameter is equal to sheath (4)
With the internal diameter of lower contact (7)；The mounting hole for penetrating tube wall is additionally provided with the tube wall of described main body joint (1), in the mounting hole
Equipped with ball-and-seat (2) so that main body joint (1) is by tube wall outside to one-way conduction inside tube wall；
Described main body joint (1) inwall be by it is lower and on annular step it is trapezoidal, the cascade ring internal diameter of foot is equal to sheath (4)
With the internal diameter of lower contact (7)；
The lower end of the sheath (4) of described tubulose and upper end are equipped with female thread into interior connecting portion, described main body joint (1)
Lower end and lower contact (7) upper end are equipped with external screw thread, and main body joint (1) lower end and lower contact (7) upper end are connected by screw thread respectively
Sheath (4) upper and lower side is connect, and is run through in screw connection point with connecting pin (6) and fixed.
2. washing well water filling intubation seal device in underground as claimed in claim 1, it is characterised in that：Described main body joint
(1) inner wall lower and the upper inside wall of lower contact (7) is provided with dust ring (3), the upper inside wall of described sheath (4) and
Bottom is mounted on sealing gasket (5).
3. washing well water filling intubation seal device in underground as claimed in claim 2, it is characterised in that：Described sealing gasket (5)
For V-type combination sealing pad, the V-type mouth of the V-type combination sealing pad of the upper inside wall of sheath (4) upward, under the inwall of sheath (4)
The V-type mouth down of the V-type combination sealing pad in portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510615672.8A CN105156061B (en) | 2015-09-25 | 2015-09-25 | Underground washable well water injection insertion pipe sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510615672.8A CN105156061B (en) | 2015-09-25 | 2015-09-25 | Underground washable well water injection insertion pipe sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105156061A CN105156061A (en) | 2015-12-16 |
| CN105156061B true CN105156061B (en) | 2018-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510615672.8A Active CN105156061B (en) | 2015-09-25 | 2015-09-25 | Underground washable well water injection insertion pipe sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105156061B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322646B (en) * | 2017-07-31 | 2023-10-31 | 中国石油天然气股份有限公司 | Separate injection pipe column for oil well water injection and use method |
| CN109267978B (en) * | 2018-09-07 | 2022-03-22 | 中国石油化工股份有限公司 | Separate injection pipe column |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4745975A (en) * | 1987-03-23 | 1988-05-24 | Larry Ray Price | Water well completion apparatus and method of use |
| CN201924873U (en) * | 2010-12-15 | 2011-08-10 | 张玉雪 | Long-term expanding packer |
| CN202165041U (en) * | 2011-04-17 | 2012-03-14 | 孙月东 | Plug-in sealing device |
| CN203469631U (en) * | 2013-08-20 | 2014-03-12 | 托普威尔石油技术股份公司 | Washable well filter and water injection assisting device |
| CN203867512U (en) * | 2014-05-14 | 2014-10-08 | 天津市滨海新区龙新石油机械制造有限公司 | Hydraulic expansion and self-locking seal type well-flushable packer |
| CN205025411U (en) * | 2015-09-25 | 2016-02-10 | 中国石油天然气股份有限公司 | Underground washable well water injection insertion pipe sealing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110303416A1 (en) * | 2010-06-14 | 2011-12-15 | Ii John Wayne Herman | Lower emergency marine riser(lemr) and method of installation preventing catastrophic product spills |
-
2015
- 2015-09-25 CN CN201510615672.8A patent/CN105156061B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4745975A (en) * | 1987-03-23 | 1988-05-24 | Larry Ray Price | Water well completion apparatus and method of use |
| CN201924873U (en) * | 2010-12-15 | 2011-08-10 | 张玉雪 | Long-term expanding packer |
| CN202165041U (en) * | 2011-04-17 | 2012-03-14 | 孙月东 | Plug-in sealing device |
| CN203469631U (en) * | 2013-08-20 | 2014-03-12 | 托普威尔石油技术股份公司 | Washable well filter and water injection assisting device |
| CN203867512U (en) * | 2014-05-14 | 2014-10-08 | 天津市滨海新区龙新石油机械制造有限公司 | Hydraulic expansion and self-locking seal type well-flushable packer |
| CN205025411U (en) * | 2015-09-25 | 2016-02-10 | 中国石油天然气股份有限公司 | Underground washable well water injection insertion pipe sealing device |
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| Publication number | Publication date |
|---|---|
| CN105156061A (en) | 2015-12-16 |
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