CN106693504A - Underground filter capable of being thrown-in and pulled for water injection well - Google Patents
Underground filter capable of being thrown-in and pulled for water injection well Download PDFInfo
- Publication number
- CN106693504A CN106693504A CN201611150408.2A CN201611150408A CN106693504A CN 106693504 A CN106693504 A CN 106693504A CN 201611150408 A CN201611150408 A CN 201611150408A CN 106693504 A CN106693504 A CN 106693504A
- Authority
- CN
- China
- Prior art keywords
- filter
- injection well
- water injection
- taking
- coarse filtration
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000002347 injection Methods 0.000 title claims abstract description 38
- 239000007924 injection Substances 0.000 title claims abstract description 38
- 238000001914 filtration Methods 0.000 claims abstract description 33
- 239000000706 filtrate Substances 0.000 claims description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 4
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 3
- 239000003830 anthracite Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 1
- 239000006004 Quartz sand Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to the technical field of water-injection matching tools of oil fields, in particular to an underground filter capable of being thrown-in and pulled for a water injection well. The underground filter capable of being thrown-in and pulled comprises a fishing head, wherein the lower end of the fishing head is sequentially connected with a filter base, a filter barrel and a choke plug from top to bottom; a liquid inlet is formed in the upper end of the filter base; the lower end of the filter base communicates with the filter barrel; the filter barrel is in the shape of a circular barrel, and is composed of an inner coarse filter screen and an outer fine filter screen which are arranged from inside to outside in a sleeved mode; a transverse coarse filter screen is further arranged in a hollow cavity in the lower end of the inner coarse filter screen; and a filter material is arranged on the lower part of the transverse coarse filter screen. A method of adding the filter material and performing multi-stage filtration is adopted, so that substances such as impurities in injected water are effectively removed, and the substances are prevented from entering a ground layer to pollute the ground layer, and therefore, water quality of the injected water is effectively improved.
Description
Technical field
The present invention relates to oil-field flooding kit technical field, and in particular to a kind of water injection well dropping in and taking off type underground filtering
Device.
Background technology
With the Persisting exploitation in oil field, stratum energy is gradually reduced, and well yield is successively decreased comparatively fast, in order to continue to keep higher
Stratum energy, it is necessary to inject water up to standard to stratum, to maintain stratum energy, improve oil well output, i.e. many oil fields at present
The oil-field flooding technology of development.Due to injection water by many containers and pipeline treatment convey, and water temperature change, cause
Some debris, incrustation scale are carried in injection water, when injecting poor water mass, impurity and being many, the problem of following several respects is easily caused:
1st, pollution and injury stratum behind injection stratum, make water injection profile water absorbing capacity be deteriorated, and cause flood effectiveness bad；
2nd, downhole water flow regulator water nozzle is easily blocked, makes difficult water injection, cause to carry out underground work, influence water filling, increase cost；
3rd, constantly corrode down-hole string, cause tubing string a large amount of machines that come off miscellaneous, many impurity be injected near wellbore zone or
In injection well downhole flow regulator, very big inconvenience is brought with salvaging to test；
4th, long-term injecting water easily causes blocking stratum, and the purpose of water filling is not reached not only, can also make oil field injection and extraction system pernicious
Circulation, has a strong impact on oil field production.
The content of the invention
For problem present in background technology, it is an object of the invention to propose a kind of water injection well dropping in and taking off type underground mistake
Filter, by down-hole filter, by injection water by the injection well downhole flow regulator under access wall after bulk filter, and injects ground by injection well downhole flow regulator
Layer.
To realize above-mentioned technical purpose, the present invention is adopted the following technical scheme that and is achieved:
A kind of water injection well dropping in and taking off type down-hole filter, including fishing head, the lower end of the fishing head is from top to bottom successively
Connection filter seat, cartridge filter, plug；The filter seat upper end is provided with inlet opening, lower end connection cartridge filter；The cartridge filter
It is cylindrical shape, is made up of the inside and outside interior coarse filtration net being arranged and outer thin screen pack, the interior coarse filtration net is in cavity in lower end
A horizontal coarse filtration net is additionally provided with, the bottom of the horizontal coarse filtration net is provided with filtrate.
Preferably, the filter seat includes pedestal, and wheel chamber is provided with the pedestal, and cam, wheel are provided with the wheel cavity
Axle and torsion spring, the wheel shaft are fixed through cam and torsion spring two ends with wheel chamber.
Preferably, the lower end of the pedestal is threadedly coupled with seal section, and the seal section hypomere is stepped cylindrical body, its
Coordinate the O-ring seal being arranged with section for sealing with underground work cylinder.
Preferably, the O-ring seal is spaced multiple tracks.
Preferably, the filter bores on the online filter bores of the interior coarse filtration and outer thin screen pack mutually stagger setting.
Preferably, a filtrate hatch door is opened up on the side wall of the outer thin screen pack.
Preferably, the mesh number scope of the interior coarse filtration net is 30-50 mesh；The mesh number scope of the horizontal coarse filtration net is
200-250 mesh；The outer thin screen pack mesh number scope is 150-200 mesh.
Preferably, the filtrate is any one of quartz sand, anthracite or ore.
Beneficial effects of the present invention：
1st, using addition filtrate, the method for multistage filtering, effectively the machine in removal injection water is miscellaneous waits material, prevents it from entering
Enter formation contaminant stratum, effectively improve injection water quality.
2nd, avoid blocking water nozzle, make the smooth injection stratum of injection water, prevent from influenceing normal water filling because water nozzle is blocked, make
Oil field injection and extraction system circulates benignly.
3rd, can be applied on multilayer injector, dispensing well, pre- lower seating nipple may be implemented in using steel wire equipment or cable reel
Position is delivered and is salvaged, and can conveniently be cleaned filter core on the ground, be changed filtrate.
Brief description of the drawings
Fig. 1 is cross-sectional view when water injection well dropping in and taking off type down-hole filter coordinates with underground work cylinder.
In figure, 1- fishing heads, 2- filter seats, 3- inlet openings, 4- cams, 5- underground works cylinder, 6- O-ring seals, 7- mistakes
Filter cylinder, coarse filtration net in 8-, 9- filtrates, 10- filtrate hatch doors, thin screen pack, 12- plugs outside 11-；13- transverse direction coarse filtration nets；
14- pedestals；15- takes turns chamber；16- wheel shafts.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
Embodiment 1
As shown in figure 1, the invention provides a kind of water injection well dropping in and taking off type down-hole filter, it is in multilayer injector, dispensing well
On can apply, when being used on dispensing well, its salvage with test allotment can be carried out in same period.
It includes fishing head 1, and the lower end of the fishing head 1 is sequentially connected filter seat 2, cartridge filter 7, plug from top to bottom
12；The upper end of the filter seat 2 is provided with inlet opening 3, lower end connection cartridge filter 7；The cartridge filter 7 is cylindrical shape, by inner-outer sleeve
If interior coarse filtration net 8 and outer thin screen pack 11 constitute, it is laterally thick that the interior coarse filtration net 8 is additionally provided with one in cavity in lower end
Screen pack 13, the bottom of the horizontal coarse filtration net 13 is provided with filtrate 9.
When using, by the down-hole filter under well head, on downhole tool.Water injection well is in lower Tubing During Running
In, underground work cylinder 5 to be gone into the well with oil pipe, the fishing head 1 of the down-hole filter is connected on downhole tool, by the well
Lower instrument is put into the position of underground work cylinder 5 by down-hole filter.Injection water is flowed into from the inlet opening 3 of the top of filter seat 2
Afterwards, reach the rear portion of cartridge filter 7 to first pass through filtrate 9 and carry out horizontal filtering, then carry out after longitudinal double filtration under access wall
Injection well downhole flow regulator injects stratum, and another part flows into downhole water flow regulator injection stratum after being directly over longitudinal double filtration.
Because cartridge filter 7 employs inside and outside stainless (steel) wire structure, and with the addition of filtrate 9 so that filter effect is significantly carried
Rise；And the water injection well dropping in and taking off type down-hole filter can meet water injection well anti-flushing well requirement, using a period of time after, can be indefinite
Phase is backwashed to it, and impurity is flushed in the blow-off pipe on ground, it is to avoid impurity blocks filtration fraction.May not be used simultaneously yet
Periodically salvaged ground, changed filtrate 9, coarse filtration net 8 in cleaning, with can repeatedly pulling use, it is conveniently excellent
Point.
Embodiment 2
On the basis of embodiment 1, as shown in figure 1, the filter seat 2 includes being provided with pedestal 14, the pedestal 14
Wheel chamber 15, is provided with cam 4, wheel shaft 16 and torsion spring in the wheel cavity 15, the wheel shaft 16 is through cam 4 and torsion spring two ends and takes turns
Chamber 15 is fixed.
The lower end of the pedestal 14 is threadedly coupled with seal section, and the seal section hypomere is stepped cylindrical body, itself and institute
State underground work cylinder 5 and coordinate the O-ring seal 6 being arranged with section for sealing.The O-ring seal 6 is spaced multiple tracks,
By setting multiple tracks, sealing effectiveness is more preferable.
The down-hole filter is consolidated down-hole filter using cam 4 and the structure of O-ring seal 6 by using plug structure
It is scheduled in underground work cylinder 5.Enter under down-hole filter during to underground work 5 top of cylinder, cam shrinks inwards, has crossed tip position
Cam is restored to the original state, and down-hole filter is fixed on underground work cylinder 5.Using this plug structure, security performance is more preferable,
Be applied to also to hang in the big well of friction in down stroke lives, and mounting is reliable, will not being flown out because losing control of one's feelings and losing effect.
Embodiment 3
On the basis of embodiment 1, as shown in figure 1, filtrate hatch door 10 is opened up on the side wall of the outer thin screen pack, should
Filtrate hatch door 10 is convenient to be put into the cartridge filter 7 filtrate 9.
Filter bores on filter bores on the interior coarse filtration net 8 and outer thin screen pack 11 mutually stagger setting, using phase
Mutually stagger the efficiency for setting and improve filtering.
Embodiment 4
On the basis of embodiment 1, the mesh number scope of the interior coarse filtration net 8 is 30-50 mesh；The horizontal coarse filtration net
13 mesh number scope is 200-250 mesh；The mesh number scope of outer thin screen pack 11 is 150-200 mesh, by setting different mesh
Number, meets the requirement of various water quality, makes filtering more abundant.
Embodiment 5
On the basis of embodiment 1, the filtrate 9 be specially quartz sand, in anthracite or ore any one.It is preferred that, quartz
Sand, thinks quartz sand filter media free from admixture, anti-pressure and abrasion-proof, high mechanical strength, stable chemical performance, and retaining power is strong, high efficiency, makes
It is long with the cycle.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (8)
1. a kind of water injection well dropping in and taking off type down-hole filter, it is characterised in that：Including fishing head (1), under the fishing head (1)
End is sequentially connected filter seat (2), cartridge filter (7), plug (12) from top to bottom；Filter seat (2) upper end is provided with feed liquor
Hole (3), lower end connects cartridge filter (7)；The cartridge filter (7) is cylindrical shape, by the inside and outside interior coarse filtration net (8) being arranged and outer thin
Screen pack (11) is constituted, and the interior coarse filtration net (8) is additionally provided with horizontal coarse filtration net (13), the horizontal stroke in cavity in lower end
Filtrate (9) is provided with to the bottom of coarse filtration net (13).
2. water injection well dropping in and taking off type down-hole filter according to claim 1, it is characterised in that：The filter seat (2)
Be provided with including pedestal (14), in the pedestal (14) in wheel chamber (15), the wheel cavity (15) be provided with cam (4), wheel shaft (16) with
And torsion spring, the wheel shaft (16) is through cam (4) and torsion spring two ends and takes turns chamber (15) fixation.
3. water injection well dropping in and taking off type down-hole filter according to claim 2, it is characterised in that：Under the pedestal (14)
End is threadedly coupled with seal section, and the seal section hypomere is stepped cylindrical body, and it coordinates in section with underground work cylinder (5)
It is arranged with the O-ring seal (6) for sealing.
4. water injection well dropping in and taking off type down-hole filter according to claim 3, it is characterised in that：The O-ring seal (6)
It is spaced multiple tracks.
5. water injection well dropping in and taking off type down-hole filter according to claim 1, it is characterised in that：The interior coarse filtration net
(8) filter bores on filter bores on and outer thin screen pack (11) mutually stagger setting.
6. water injection well dropping in and taking off type down-hole filter according to claim 1, it is characterised in that：The outer thin screen pack
(11) a filtrate hatch door (10) is opened up on side wall.
7. water injection well dropping in and taking off type down-hole filter according to claim 1, it is characterised in that：The interior coarse filtration net
(8) mesh number scope is 30-50 mesh；The mesh number scope of the horizontal coarse filtration net (13) is 200-250 mesh；The outer thin filtering
Net (11) mesh number scope is 150-200 mesh.
8. water injection well dropping in and taking off type down-hole filter according to claim 1, it is characterised in that：The filtrate (9) is stone
Any one of sand, anthracite or ore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611150408.2A CN106693504A (en) | 2016-12-14 | 2016-12-14 | Underground filter capable of being thrown-in and pulled for water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611150408.2A CN106693504A (en) | 2016-12-14 | 2016-12-14 | Underground filter capable of being thrown-in and pulled for water injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106693504A true CN106693504A (en) | 2017-05-24 |
Family
ID=58937382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611150408.2A Pending CN106693504A (en) | 2016-12-14 | 2016-12-14 | Underground filter capable of being thrown-in and pulled for water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106693504A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2809212Y (en) * | 2005-06-21 | 2006-08-23 | 大庆油田有限责任公司 | Throwing-in and salvaging type down-hole filter |
| CN201184177Y (en) * | 2008-03-06 | 2009-01-21 | 大庆石油学院 | Water injection filtering device capable of dragging |
| CN201711032U (en) * | 2010-05-07 | 2011-01-19 | 蒋世银 | Underground online ultrafilter |
| CN202802892U (en) * | 2012-08-06 | 2013-03-20 | 中国石油化工股份有限公司 | Underground filter and underground filtering water distributor |
| CN103405949A (en) * | 2013-07-24 | 2013-11-27 | 徐州云泰汽车电器有限公司 | Novel underground coal mine water filter provided with adjustable filter boards, and filtering method |
| CN104018817A (en) * | 2014-06-12 | 2014-09-03 | 山东科瑞石油工程技术研究院 | Underground water filter capable of being thrown and fished |
| CN204093171U (en) * | 2014-09-18 | 2015-01-14 | 中国石油化工股份有限公司 | A kind of wellhead of water injection well filter |
-
2016
- 2016-12-14 CN CN201611150408.2A patent/CN106693504A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2809212Y (en) * | 2005-06-21 | 2006-08-23 | 大庆油田有限责任公司 | Throwing-in and salvaging type down-hole filter |
| CN201184177Y (en) * | 2008-03-06 | 2009-01-21 | 大庆石油学院 | Water injection filtering device capable of dragging |
| CN201711032U (en) * | 2010-05-07 | 2011-01-19 | 蒋世银 | Underground online ultrafilter |
| CN202802892U (en) * | 2012-08-06 | 2013-03-20 | 中国石油化工股份有限公司 | Underground filter and underground filtering water distributor |
| CN103405949A (en) * | 2013-07-24 | 2013-11-27 | 徐州云泰汽车电器有限公司 | Novel underground coal mine water filter provided with adjustable filter boards, and filtering method |
| CN104018817A (en) * | 2014-06-12 | 2014-09-03 | 山东科瑞石油工程技术研究院 | Underground water filter capable of being thrown and fished |
| CN204093171U (en) * | 2014-09-18 | 2015-01-14 | 中国石油化工股份有限公司 | A kind of wellhead of water injection well filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |