CN108625835A - A kind of eccentric injection mandrel - Google Patents
A kind of eccentric injection mandrel Download PDFInfo
- Publication number
- CN108625835A CN108625835A CN201810891481.8A CN201810891481A CN108625835A CN 108625835 A CN108625835 A CN 108625835A CN 201810891481 A CN201810891481 A CN 201810891481A CN 108625835 A CN108625835 A CN 108625835A
- Authority
- CN
- China
- Prior art keywords
- mounting hole
- eccentric orfice
- eccentric
- hole
- check valve
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 31
- 239000007924 injection Substances 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 28
- 239000004576 sand Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010992 reflux Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004401 flow injection analysis Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
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)
- Check Valves (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of eccentric injection mandrel, including connection end and shell, after connection end and case weld, centre is through with centre bore；Mounting hole and eccentric orfice are additionally provided in shell；Eccentric orfice is connected to centre bore by oblique flow channel, and oblique flow channel is inclined upward to eccentric orfice by centre bore；It is connected to by advection hole between mounting hole and eccentric orfice, advection hole opens up position higher than oblique flow channel in the position that opens up of eccentric orfice in eccentric orfice；Mounting hole is internally provided with blanking plug, apopore and check valve；Blanking plug is mounted on mounting hole top；Apopore is arranged in mounting hole side wall, and is located at blanking plug bottom；Check valve is arranged between advection hole and apopore.The present invention is arranged due to separating eccentric orfice and mounting hole, it is drained by oblique flow channel peace discharge orifice, has achieved the effect that repeatedly to intercept sand, while ensure that after stopping note, the phenomenon that water flooding will not generate reflux due to hydraulic pressure unevenness, significantly improves water filling quality.
Description
Technical field
The present invention relates to oil recovery underground water-injection technical field of operation, more particularly to a kind of eccentric injection mandrel.
Background technology
When being recovered the oil to oil field by the method for water filling, some water injection wells are multilayer water filling, the water injection rate of each layer
Difference needs installation injection well downhole flow regulator to carry out layering component water filling.Injection well downhole flow regulator is exactly to adjust interlayer contradiction using Throttle Principle, is realized each
The effect of layer water distribution, is the key equipment in separate layer water injection string.Currently, continuously improving with injection well testing technique, greatly
Most instruments realize the mode that survey is hung in oil pipe, and the part-structure that old underground water distribution device has has not used.However
Eccentric injection mandrel used at present, only can be by blanking plug to stratigraphic controls water filling due to being influenced by structure.Work as blocking
When device takes out, since each layer of pressure is different, often there is sand to enter in eccentric orfice with flow, to be deposited in eccentric orfice
Bottom, when blanking plug is put into eccentric body again, the sand for being deposited in eccentric orfice bottom is easy for blocking blanking plug, makes
The index not reached requirement at water injection rate influences oil recovery effect, generates heavy economic losses.
Therefore, how to provide that a kind of to prevent the eccentric injection mandrel of eccentric hole plug be those skilled in the art's urgent need to resolve
Problem.
Invention content
In view of this, mounting hole installation blanking plug is separately provided in the present invention so that the water of centre bore is final by eccentric orfice
Stratum is injected through the apopore on mounting hole, in conjunction with the design of oblique flow channel peace discharge orifice so that sand will not pour in partially
Heart hole, and check valve ensure that the water in stratum will not blow back into mounting hole, ensure water filling quality.
To achieve the goals above, the present invention adopts the following technical scheme that：A kind of eccentric injection mandrel, including connection end and
Shell, after the connection end and case weld, centre is through with centre bore；It is additionally provided with mounting hole and bias in the shell
Hole；The eccentric orfice is connected to the centre bore by oblique flow channel, and the oblique flow channel is tilted upwards by the centre bore
To the eccentric orfice；It is connected to by advection hole between the mounting hole and eccentric orfice, advection hole the opening in the eccentric orfice
If position opens up position higher than the oblique flow channel in the eccentric orfice；Wherein, the mounting hole be internally provided with blanking plug,
Apopore and check valve；
The blanking plug is mounted on the mounting hole top；The apopore is arranged in the mounting hole side wall, and is located at
The blanking plug bottom；The check valve is arranged between the advection hole and the apopore.
Preferably, the eccentric orfice and mounting hole are arranged in parallel vertically both with respect to the centre bore, contribute to hydraulic pressure
It is uniformly controlled.
Preferably, the mounting hole bottom has deep gouge, the bottom end for opening up depth and being more than the eccentric orfice of the deep gouge
Open up depth, deposition space provided for tiny sandstone, will not because sand deposit caused by advection hole plug, ensure that water filling matter
Amount.
Preferably, there is step surface, the check valve are welded in the mounting hole on the step surface.The step surface
Play the role of limit to the check valve, and the installation for the check valve provides welding surface, prevents from being used for a long time
Check valve falls, and blocks the advection hole, influences flow injection mounting hole.
Preferably, the check valve includes inlet tube, outlet, and setting the inlet tube and the outlet it
Between spool；The bottom end of the inlet tube is mutually welded with the step surface, is sealed described in sandwiched between top and the outlet
Spool；The outer wall of the inlet tube and the outlet is connect with the inner wall gluing of the mounting hole.
Preferably, the spool is radial more valve structures, and valve body closes up to centre polymerization, and with the arc being bent upwards
Face.
Preferably, the material of the valve body is rubber.
The setting of the check valve can effectively prevent the difference between Different Strata hydraulic pressure to cause the reflux of water filling layer, and
And there is certain interception function to the sand in flow.
Preferably, the side wall of the plugging device is equipped with sealing ring, can increase the sealing performance of plugging device.
It can be seen via above technical scheme that the present invention provides a kind of eccentric injection mandrel, specifically have the beneficial effect that：
(1) eccentric orfice has the function of drainage, is introduced flow in eccentric orfice by oblique flow channel, and since oblique flow is logical
The upward inclination angle design in road so that the sand for being deposited in eccentric orfice bottom is fallen into through oblique flow channel to centre bore, will not be caused
The blocking of eccentric orfice.
(2) it is not provided with apopore on eccentric orfice, but flow is introduced into mounting hole through advection hole, advection hole is horizontal hole
Road in order to balance eccentric orfice and the hydraulic pressure in mounting hole, and can effectively prevent sand to reside in eccentric orfice.
(3) deep gouge of mounting hole bottom provides accommodation space for the sand flowed into so that the flow flowed into through advection hole
It is upwardly into check valve, and sand is then fallen after rise to deep gouge, ensures again being smoothed out for water filling.
(4) water flows through check valve and flows out to apopore, and the water filling completed to bottom works, since the elastic force of check valve is made
With, can equally play the role of stopping sand, and compared with the prior art in the rigid members such as ball valve, do not easily cause more stifled
Plug, after the valve body gap of rigid member is blocked, it may occur that stuck situation, to ineffective, for later period maintenance
Great inconvenience is brought, and the present invention then effectively prevents the generation of the above problem using improved check valve.Simultaneously, moreover it is possible to
The phenomenon that preventing water flooding from flowing back is played, is killed two birds with one stone.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 attached drawings are the overall structure diagram of eccentric injection mandrel provided in an embodiment of the present invention；
Fig. 2 attached drawings are the partial enlarged view of eccentric injection mandrel provided in an embodiment of the present invention；
Fig. 3 attached drawings are the A-A sectional views one of eccentric injection mandrel provided in an embodiment of the present invention；
Fig. 4 attached drawings are the B-B sectional views two of eccentric injection mandrel provided in an embodiment of the present invention；
Fig. 5 attached drawings are the structural schematic diagram of check valve provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Eccentric injection mandrel provided in an embodiment of the present invention, the whole of the eccentric injection mandrel provided referring to Figure of description 1 are tied
After the partial enlarged view that structure schematic diagram and Figure of description 2 provide, connection end 1 and shell 1 weld, centre is through with centre bore
3；Mounting hole 4 and eccentric orfice 5 are additionally provided in shell 1；Eccentric orfice 5 is connected to centre bore 3 by oblique flow channel 6, and oblique flow is logical
Road 6 is inclined upward to eccentric orfice 5 by the centre bore 3；The water of centre bore flows through oblique flow channel 6 and flows upwardly into eccentric orfice 5,
The sand in eccentric orfice 5 is flowed into fall after rise to centre bore 3 through oblique flow channel 6 under the effect of gravity.Mounting hole 4 and eccentric orfice 5 it
Between by advection hole 7 be connected to, advection hole 7 opens up position higher than oblique flow channel 6 in the position that opens up of eccentric orfice 5 in eccentric orfice 5；
Since the horizontal position in advection hole 7 is higher than oblique flow channel 6, it is sand when water flows through eccentric orfice 5 and flows into advection hole 7
Falling provides a difference in height, prevents major diameter sand from flowing downstream and enters advection hole 7.Water flows through advection hole 7 and subsequently enters peace
Fill hole 4, wherein mounting hole 4 is internally provided with blanking plug 41, apopore 42 and check valve 43；Blanking plug 41 is mounted on mounting hole 4
Top；Apopore 42 is arranged in 4 side wall of mounting hole, and is located at 41 bottom of blanking plug；The setting of check valve 43 is in advection hole 7 and water outlet
Between hole 42.It after flow enters mounting hole 4, can be washed open check valve upwards by influence of hydraulic pressure, inject stratum from apopore 42.
Referring to the structural schematic diagram for the check valve that Figure of description 5 provides, check valve 43 includes inlet tube 431, outlet
432, and the spool 433 that is arranged between inlet tube 431 and outlet 432；It is welded with 45 phase of step surface the bottom end of inlet tube 431
It connects, sandwiched spool 433 is sealed between top and outlet 432；The outer wall of inlet tube 431 and outlet 432 with mounting hole 4
Inner wall gluing connects.Spool 433 is radial more valve structures, and valve body 434 closes up to centre polymerization, and with the arc being bent upwards
Face.The material of spool 433 is rubber.434 structure of valve body of check valve 43 further plays elastic Intercepting effects to sand, i.e.,
It ensure that the unimpeded of flow, there is the phenomenon that capable of effectively avoiding spool jam.And then can by the sand that check valve 43 stops
In the deep gouge 44 for falling back to 4 bottom of mounting hole, since the depth that opens up of deep gouge 44 opens up depth more than the bottom end of eccentric orfice 5, because
This, the sandstone of deposition will not cause the blocking in advection hole, ensure that the normal injection of flow.
It is set to advanced optimize above-mentioned technical proposal, eccentric orfice 5 and mounting hole 4 both with respect to centre bore 3 is parallel vertically
It sets.
In order to advanced optimize above-mentioned technical proposal, in mounting hole 4 there is step surface 45, check valve 43 to be welded on step surface
On 45.
Eccentric injection mandrel provided by the invention is arranged due to separating eccentric orfice and mounting hole, passes through when carrying out water filling
Oblique flow channel peace discharge orifice is drained, and has achieved the effect that repeatedly to intercept sand, while ensure that after stopping note, ground
The phenomenon that layer water will not generate reflux due to hydraulic pressure unevenness, significantly improves water filling quality.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (7)
1. a kind of eccentric injection mandrel, including connection end (1) and shell (1), which is characterized in that the connection end (1) and shell
After body (1) welding, centre is through with centre bore (3)；It is additionally provided with mounting hole (4) and eccentric orfice (5) in the shell (1)；Institute
It states eccentric orfice (5) to be connected to by oblique flow channel (6) with the centre bore (3), and the oblique flow channel (6) is by the centre bore
(3) it is inclined upward to the eccentric orfice (5)；It is connected to by advection hole (7) between the mounting hole (4) and eccentric orfice (5), it is described
Advection hole (7) opens up position higher than the oblique flow channel (6) in the position that opens up of the eccentric orfice (5) in the eccentric orfice (5)
It sets；Wherein, the mounting hole (4) is internally provided with blanking plug (41), apopore (42) and check valve (43)；
The blanking plug (41) is mounted on the mounting hole (4) top；The apopore (42) is arranged in the mounting hole (4) side
Wall, and it is located at the blanking plug (41) bottom；The check valve (43) is arranged in the advection hole (7) and the apopore (42)
Between.
2. a kind of eccentric injection mandrel according to claim 1, which is characterized in that the eccentric orfice (5) and mounting hole (4) are homogeneous
The centre bore (3) is arranged in parallel vertically.
3. a kind of eccentric injection mandrel according to claim 1, which is characterized in that mounting hole (4) bottom has deep gouge
(44), the depth that opens up of the deep gouge (44) opens up depth more than the bottom end of the eccentric orfice (5).
4. a kind of eccentric injection mandrel according to claim 1, which is characterized in that have step surface in the mounting hole (4)
(45), the check valve (43) is welded on the step surface (45).
5. a kind of eccentric injection mandrel according to claim 4, which is characterized in that the check valve (43) includes inlet tube
(431), outlet (432), and spool (433) of the setting between the inlet tube (431) and the outlet (432)；
The bottom end of the inlet tube (431) is mutually welded with the step surface (45), and sandwiched is sealed between top and the outlet (432)
The spool (433)；Inner wall glue of the outer wall of the inlet tube (431) and the outlet (432) with the mounting hole (4)
It is connected.
6. a kind of eccentric injection mandrel according to claim 5, which is characterized in that the spool (433) is radial more valve knots
Structure, valve body (434) close up to centre polymerization, and with the cambered surface being bent upwards.
7. a kind of eccentric injection mandrel according to claim 4 or 5, which is characterized in that the material of the spool (433) is rubber
Glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810891481.8A CN108625835B (en) | 2018-08-07 | 2018-08-07 | Eccentric water distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810891481.8A CN108625835B (en) | 2018-08-07 | 2018-08-07 | Eccentric water distributor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108625835A true CN108625835A (en) | 2018-10-09 |
| CN108625835B CN108625835B (en) | 2023-11-24 |
Family
ID=63690214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810891481.8A Active CN108625835B (en) | 2018-08-07 | 2018-08-07 | Eccentric water distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108625835B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924909A (en) * | 2019-11-21 | 2020-03-27 | 齐齐哈尔亚盛机械制造有限公司 | Straight-fishing anti-blocking eccentric water distributor |
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|---|---|---|---|---|
| CN2060840U (en) * | 1989-10-12 | 1990-08-22 | 青岛全密封耐蚀泵开发公司 | Check valve with elastic convex plug |
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| GB0703422D0 (en) * | 2006-03-17 | 2007-04-04 | Schlumberger Holdings | Gas lift valve assembly |
| JP2007139057A (en) * | 2005-11-17 | 2007-06-07 | Tabuchi Corp | Flow control valve |
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| CN201202458Y (en) * | 2008-05-12 | 2009-03-04 | 盖庆海 | Minor diameter eccentric water distributing apparatus |
| CN101988379A (en) * | 2010-11-04 | 2011-03-23 | 李永祥 | Backflow-resistant device of eccentric water distributor |
| CN201810290U (en) * | 2010-06-13 | 2011-04-27 | 中国石油化工股份有限公司 | Eccentric water distributor |
| CA2711026A1 (en) * | 2010-08-05 | 2012-02-05 | Globe Union Industrial Corp. | Automatic water distributor |
| US20120031514A1 (en) * | 2010-08-06 | 2012-02-09 | Zhibin Liu | Automatic water distributor |
| US20120125597A1 (en) * | 2010-11-22 | 2012-05-24 | Halliburton Energy Services, Inc. | Eccentric safety valve |
| CN103104231A (en) * | 2013-01-31 | 2013-05-15 | 中国石油天然气股份有限公司 | Bridge type concentric continuous adjustable water distributor |
| CN203066947U (en) * | 2013-02-05 | 2013-07-17 | 中国石油化工股份有限公司 | Eccentric single-current water distributor |
| CN204663504U (en) * | 2015-03-30 | 2015-09-23 | 长葛市福侨机电有限公司 | A kind of eccentric injection mandrel |
| CN208777972U (en) * | 2018-08-07 | 2019-04-23 | 阜宁县石油机械有限公司 | A kind of eccentric injection mandrel |
-
2018
- 2018-08-07 CN CN201810891481.8A patent/CN108625835B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2060840U (en) * | 1989-10-12 | 1990-08-22 | 青岛全密封耐蚀泵开发公司 | Check valve with elastic convex plug |
| CN2616682Y (en) * | 2003-04-17 | 2004-05-19 | 阎树伟 | Eccentric injection well down-hole flow |
| JP2007139057A (en) * | 2005-11-17 | 2007-06-07 | Tabuchi Corp | Flow control valve |
| CN101025081A (en) * | 2006-02-17 | 2007-08-29 | 于成龙 | Constant-flow sand-proof anti-blocked eccentric water flow regulator |
| GB0703422D0 (en) * | 2006-03-17 | 2007-04-04 | Schlumberger Holdings | Gas lift valve assembly |
| CN201202458Y (en) * | 2008-05-12 | 2009-03-04 | 盖庆海 | Minor diameter eccentric water distributing apparatus |
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| CA2711026A1 (en) * | 2010-08-05 | 2012-02-05 | Globe Union Industrial Corp. | Automatic water distributor |
| US20120031514A1 (en) * | 2010-08-06 | 2012-02-09 | Zhibin Liu | Automatic water distributor |
| CN101988379A (en) * | 2010-11-04 | 2011-03-23 | 李永祥 | Backflow-resistant device of eccentric water distributor |
| US20120125597A1 (en) * | 2010-11-22 | 2012-05-24 | Halliburton Energy Services, Inc. | Eccentric safety valve |
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| CN203066947U (en) * | 2013-02-05 | 2013-07-17 | 中国石油化工股份有限公司 | Eccentric single-current water distributor |
| CN204663504U (en) * | 2015-03-30 | 2015-09-23 | 长葛市福侨机电有限公司 | A kind of eccentric injection mandrel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924909A (en) * | 2019-11-21 | 2020-03-27 | 齐齐哈尔亚盛机械制造有限公司 | Straight-fishing anti-blocking eccentric water distributor |
| CN110924909B (en) * | 2019-11-21 | 2020-07-14 | 齐齐哈尔亚盛机械制造有限公司 | Straight-fishing anti-blocking eccentric water distributor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108625835B (en) | 2023-11-24 |
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