CN103806883B - The anti-stab injection well downhole flow regulator of pre-throttling - Google Patents
The anti-stab injection well downhole flow regulator of pre-throttling Download PDFInfo
- Publication number
- CN103806883B CN103806883B CN201210436712.9A CN201210436712A CN103806883B CN 103806883 B CN103806883 B CN 103806883B CN 201210436712 A CN201210436712 A CN 201210436712A CN 103806883 B CN103806883 B CN 103806883B
- Authority
- CN
- China
- Prior art keywords
- center tube
- piston
- guide sleeve
- flow guide
- packed
- 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.)
- Expired - Fee Related
Links
Landscapes
- Flow Control (AREA)
Abstract
The invention discloses the anti-stab injection well downhole flow regulator of pre-throttling, mainly comprise top connection, lower contact, upper center tube, lower center tube, piston assembly, throttle pipe, described upper center tube upper end is connected in top connection, described lower center tube lower end is connected in lower contact, described upper lower center tube is all connected on flow guide sleeve in centre, bottom lower center tube, be provided with lower flow guide sleeve, connect between described upper and lower flow guide sleeve with throttle pipe, on the upper center tube above described upper flow guide sleeve, cover has piston assembly.Piston assembly comprises control piston, packed-piston, annular space plunger shaft is formed between described control piston and upper center tube, the upper flow guide sleeve of plunger shaft and below is connected state, packed-piston is had in plunger shaft inner sleeve, control piston bottom is connected with packed-piston by screw thread, described packed-piston lower end connects sealing adjustable ring, and arranges sealing ring therebetween.The present invention contributes to reducing pulling allotment workload, extend tubing string in well period of validity, reduce inefficient water injection amount.
Description
Technical field
The present invention relates to water injection well layering water dispensing apparatus, specifically the pre-anti-stab injection well downhole flow regulator of throttling.
Background technology
The injection well downhole flow regulator of current scene application mainly contains hollow distributor and eccentric injection mandrel, is mainly used in the layering water distribution of water injection well more than 2 layers.Along with deepening continuously of fine development, the interlayer large pressure reduction dispensing well differed greatly that absorbs water increases year by year, the conventional injection well downhole flow regulator allotment of the many employings in current oil field, exist " allocate not open or high permeability formation step-down throttling control difficulty large ", " water injection well choke thorn is large ", " injection well downhole flow regulator thorn is bad " problem that phenomenon is comparatively serious, not only increase allotment operations number, cost of production is increased; Reduce the counter-flow resisting performance of injection well downhole flow regulator, shorten tubing string in well period of validity; And current heterogeneous reservoir seperated layer water injection interval qualification rate can be caused lower, can not be stratum makeup energy timely and effectively.
In view of this, for the problems referred to above, propose a kind of reasonable in design and effectively improve the anti-stab injection well downhole flow regulator of pre-throttling of above-mentioned disappearance.
Summary of the invention
The object of the present invention is to provide the anti-stab injection well downhole flow regulator of pre-throttling, contribute to reducing pulling allotment workload, extend tubing string in well period of validity, reduce inefficient water injection amount.
In order to reach above-mentioned purpose, present invention employs following technical scheme, the anti-stab injection well downhole flow regulator of pre-throttling, mainly comprise top connection, lower contact, upper center tube, lower center tube, piston assembly, throttle pipe, described upper center tube upper end is connected in top connection, described lower center tube lower end is connected in lower contact, described upper lower center tube is all connected on flow guide sleeve in centre, lower flow guide sleeve is provided with bottom lower center tube, connect with throttle pipe between described upper and lower flow guide sleeve, on the upper center tube above described upper flow guide sleeve, cover has piston assembly.
Described piston assembly comprises control piston, packed-piston, annular space plunger shaft is formed between described control piston and upper center tube, the upper flow guide sleeve of plunger shaft and below is connected state, packed-piston is had in plunger shaft inner sleeve, control piston bottom is connected with packed-piston by screw thread, described packed-piston lower end connects sealing adjustable ring, and arranges sealing ring therebetween.
The joint ring be fastened on upper center tube is also provided with above packed-piston in described plunger shaft, control piston upper surface is withstood in location, described joint ring upper surface, all sides then fit tightly on control piston circumferential inner wall, arrange sealing ring between described joint ring and control piston.
Be provided with the spring be enclosed within upper center tube above described piston assembly, outside described top connection, cover has upper adjustable ring, and described spring upper end is withstood on upper adjustable ring by baffle ring.
Described throttle pipe two ends are connected on upper and lower flow guide sleeve respectively by throttle pipe connector.
Described lower flow guide sleeve upper end is threaded connection on lower center tube outer wall, lower end is threaded connection on lower contact outer wall, annular space is formed between described lower flow guide sleeve, lower center tube, lower contact three, lower center tube is offered the through hole being communicated to this annular space, and this annular space upper end is communicated to throttle pipe.
Described upper center tube upper end and top connection junction are provided with sealing ring, and upper center tube lower end and upper flow guide sleeve junction are also provided with sealing ring.
Described throttle pipe is multi-turn pressure pipe, is enclosed within lower center tube periphery,
Described multi-turn pressure pipe is multi-turn pressure tight metal pipe.
Compared to prior art, the present invention has following beneficial effect:
1, the high permeability formation throttling meeting interlayer difference between reservoir pre ssure and injection pressure > 5MPa well controls water distribution;
2, thorn is bad greatly effectively to prevent injection well downhole flow regulator water outlet position and water nozzle thorn;
When 3, preventing from stopping noting, in well, dirt causes the problem that injection well downhole flow regulator blocks or in oil pipe, dirt deposits through counter the telling of injection well downhole flow regulator to oil pipe.
Accompanying drawing explanation
Fig. 1 is the structural representation of the anti-stab injection well downhole flow regulator of the pre-throttling of the present invention.
In figure: 1-top connection; 2,7,10,12,14-sealing ring; Adjustable ring on 3; Adjustable ring under 22-; 4-baffle ring; 5-upper center tube; 6-spring; 8-control piston; 9-joint ring; 11-packed-piston; 13-seals adjustable ring; Flow guide sleeve on 15; Flow guide sleeve under 20-; 16,19-throttle pipe connector; 17-throttle pipe; 18-lower center tube; 21-lower contact.
Detailed description of the invention
Detailed description for the present invention and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the present invention.
According to Fig. 1, top connection 1 is inner to be threaded connection with upper center tube 5, and both are sealed by sealing ring 2.Top connection is outside to be threaded connection with upper adjustable ring 3.It is outside that baffle ring 4 is arranged on upper center tube 5, and the top adjustable ring 3 in top is located, and spring 6 is sleeved on outside central tube, is arranged between baffle ring 4 and control piston 8.Joint ring 9 is threaded connection with the middle part of upper center tube 5, packed-piston 11 top screw thread and control piston 8 are threaded connection, packed-piston 11 lower thread is connected with sealing adjustable ring 13, and sealing ring 12 is equipped with in centre, realizes the sealing between piston and upper flow guide sleeve 15.Control piston and packed-piston can together with along the axial upstream or downstream of injection well downhole flow regulator.Control piston 8 is by location, joint ring 9 upper end.Upper center tube 5 and lower center tube 18 are threaded connection with upper flow guide sleeve 15 respectively, and throttle pipe connector 16,19 is connected with upper flow guide sleeve 15, lower flow guide sleeve 20 respectively by screw thread.Throttle pipe 17 is wrapped in lower center tube outside, and it is inner that upper and lower two ends are contained in throttle pipe connector 16,19 respectively, and the soft metal distortion respectively by connector 16,19 end is fixed and sealing.Lower contact 21 is inner to be threaded connection with lower center tube 18, and outside and lower adjustable ring 22 is threaded connection, and realizes to injecting water by sealing ring sealing with lower flow guide sleeve 20.
When going into the well, injection well downhole flow regulator is connected to tubing string position near the oil reservoir needing water distribution, injection well downhole flow regulator is in original state as shown in the figure; When setting, suppress from oil pipe, when coordinating with amplificate packer, directly suppress and can make packer setting, also can compression packer be coordinated to set by the dead fuse of pulling.
During water filling, inject the weep hole pressure transmission of water by upper center tube 5, under less injection pressure, it is up that control piston 8 external and internal pressure difference promotes control piston 8 Compress Spring together with packed-piston 11, open by the waterflood path between control piston 8 and upper flow guide sleeve 15 in advance, avoid high-pressure injected water and attack sealing ring 12 and control piston 8 lower end directly, prevent delivery port from stinging bad.Inject water simultaneously and carry out reducing pressure by regulating flow by the weep hole of lower center tube 18, lower flow guide sleeve 20 and throttle pipe 17 successively, in the waterflood path opened in advance, inject stratum with lower pressure, thus the throttling realized under the large pressure reduction of interlayer controls water filling.
When stopping note, control piston 8 is descending under the restoring force effect of spring 6 together with packed-piston 11, thus closes by the waterflood path between control piston 8 and upper flow guide sleeve 15, can effectively prevent counter the telling in injection well downhole flow regulator of dirt in pit shaft from causing water nozzle clogging.
The foregoing is only preferred embodiment of the present invention, be not used to limit the scope of the claims of the present invention, other use the equivalence of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (5)
1. the pre-anti-stab injection well downhole flow regulator of throttling, it is characterized in that, mainly comprise top connection, lower contact, upper center tube, lower center tube, piston assembly, throttle pipe, described upper center tube upper end is connected in top connection, described lower center tube lower end is connected in lower contact, and described upper lower center tube is all connected on flow guide sleeve in centre, is provided with lower flow guide sleeve bottom lower center tube, connect with throttle pipe between described upper and lower flow guide sleeve, on the upper center tube above described upper flow guide sleeve, cover has piston assembly; Described piston assembly comprises control piston, packed-piston, annular space plunger shaft is formed between described control piston and upper center tube, the upper flow guide sleeve of plunger shaft and below is connected state, packed-piston is had in plunger shaft inner sleeve, control piston bottom is connected with packed-piston by screw thread, described packed-piston lower end connects sealing adjustable ring, and arranges sealing ring therebetween; The joint ring be fastened on upper center tube is also provided with above packed-piston in described plunger shaft, control piston upper surface is withstood in location, described joint ring upper surface, all sides then fit tightly on control piston circumferential inner wall, arrange sealing ring between described joint ring and control piston; Be provided with the spring be enclosed within upper center tube above described piston assembly, outside described top connection, cover has upper adjustable ring, and described spring upper end withstands on upper adjustable ring by baffle ring; Described lower flow guide sleeve upper end is threaded connection on lower center tube outer wall, lower end is threaded connection on lower contact outer wall, annular space is formed between described lower flow guide sleeve, lower center tube, lower contact three, lower center tube is offered the through hole being communicated to this annular space, and this annular space upper end is communicated to throttle pipe.
2. the anti-stab injection well downhole flow regulator of pre-throttling according to claim 1, is characterized in that, described throttle pipe two ends are connected on upper and lower flow guide sleeve respectively by throttle pipe connector.
3. the anti-stab injection well downhole flow regulator of pre-throttling according to claim 1, is characterized in that, described upper center tube upper end and top connection junction are provided with sealing ring, and upper center tube lower end and upper flow guide sleeve junction are also provided with sealing ring.
4. the anti-stab injection well downhole flow regulator of pre-throttling according to claim 1, it is characterized in that, described throttle pipe is multi-turn pressure pipe, is enclosed within lower center tube periphery.
5. the anti-stab injection well downhole flow regulator of pre-throttling according to claim 4, is characterized in that, described multi-turn pressure pipe is multi-turn pressure tight metal pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436712.9A CN103806883B (en) | 2012-11-06 | 2012-11-06 | The anti-stab injection well downhole flow regulator of pre-throttling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436712.9A CN103806883B (en) | 2012-11-06 | 2012-11-06 | The anti-stab injection well downhole flow regulator of pre-throttling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103806883A CN103806883A (en) | 2014-05-21 |
| CN103806883B true CN103806883B (en) | 2016-04-27 |
Family
ID=50704212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210436712.9A Expired - Fee Related CN103806883B (en) | 2012-11-06 | 2012-11-06 | The anti-stab injection well downhole flow regulator of pre-throttling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103806883B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121602A (en) * | 2016-06-30 | 2016-11-16 | 中国石油天然气股份有限公司 | A kind of dual pathways injection well downhole flow regulator for concentric double layer oil pipe dispensing |
| CN108019193B (en) * | 2016-11-02 | 2023-09-05 | 中国石油化工股份有限公司 | Hollow measuring and adjusting integrated polymer injection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050427A (en) * | 1989-09-22 | 1991-04-03 | 中原石油勘探局采油工艺研究所 | Double-layer self-adjustable water distributor |
| CN2656634Y (en) * | 2003-08-04 | 2004-11-17 | 东营银星石油技术开发有限责任公司 | New type hollow water distribution apparatus |
| RU2274737C1 (en) * | 2004-08-30 | 2006-04-20 | Анатолий Прокопьевич Чебунин | System for water injection in injection well for formation pressure maintenance |
| CN201090196Y (en) * | 2007-09-25 | 2008-07-23 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Underground hollow constant flux water distributor |
| CN201826822U (en) * | 2010-07-02 | 2011-05-11 | 孔宪春 | Intensive water distributor |
| CN202937238U (en) * | 2012-11-06 | 2013-05-15 | 中国石油化工股份有限公司 | Beforehand throttle stab-resistant water distributor |
-
2012
- 2012-11-06 CN CN201210436712.9A patent/CN103806883B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050427A (en) * | 1989-09-22 | 1991-04-03 | 中原石油勘探局采油工艺研究所 | Double-layer self-adjustable water distributor |
| CN2656634Y (en) * | 2003-08-04 | 2004-11-17 | 东营银星石油技术开发有限责任公司 | New type hollow water distribution apparatus |
| RU2274737C1 (en) * | 2004-08-30 | 2006-04-20 | Анатолий Прокопьевич Чебунин | System for water injection in injection well for formation pressure maintenance |
| CN201090196Y (en) * | 2007-09-25 | 2008-07-23 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Underground hollow constant flux water distributor |
| CN201826822U (en) * | 2010-07-02 | 2011-05-11 | 孔宪春 | Intensive water distributor |
| CN202937238U (en) * | 2012-11-06 | 2013-05-15 | 中国石油化工股份有限公司 | Beforehand throttle stab-resistant water distributor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103806883A (en) | 2014-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107165603B (en) | A kind of oil field layered priming device | |
| CN103806883B (en) | The anti-stab injection well downhole flow regulator of pre-throttling | |
| CN207750066U (en) | A kind of totally-enclosed mixes defeated decompression cycle gas lift system | |
| CN202832439U (en) | Oil filed in-layer subdivision water injection technology tubular column | |
| CN107842346A (en) | A kind of oil-water well combined type is intubated internal sealed seating nipple | |
| CN202707018U (en) | Bridge type eccentric overflowing water distributor and blanking plug thereof | |
| CN202628052U (en) | Differential-pressure decomposition throttling water distributor | |
| CN202937238U (en) | Beforehand throttle stab-resistant water distributor | |
| CN205805530U (en) | A kind of layer steam injection regulating separate stratum injection string | |
| CN208966249U (en) | A kind of compact coaxial double-pipe injection-production well mouth device | |
| CN111577206B (en) | Water injection well descaling device and method | |
| CN208122837U (en) | A kind of water injection well in oil fields ground tuner | |
| CN103437742A (en) | Sand-replenishing tool for rapidly opening and closing filling channel | |
| CN209385322U (en) | A kind of viscous crude dispensing point adopts eccentric oil well pump | |
| CN201137484Y (en) | Anti-pollution eccentric water distributing apparatus | |
| CN200975246Y (en) | Integrating layered water distributor | |
| CN209179745U (en) | A kind of anti-return of polymer spits low sheraing distributor | |
| CN203626781U (en) | Eccentric feedback pump for separated injection and joint exploitation of thickened oil | |
| CN204098886U (en) | Producing well dosing supercharging device | |
| CN205918407U (en) | Double -barrelled water injection level pressure formula screen pipe | |
| CN205779379U (en) | The sufficient high efficiency diesel-oil filter element of a kind of filtration | |
| CN205955713U (en) | Water injection well ground water injection mandrel | |
| CN201582086U (en) | Large-depth difference split respective-pumping combined pump | |
| CN204163703U (en) | Development of hydraulic supercharger in injection well | |
| CN206290242U (en) | The adjustable water installations of underground pressure difference |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20191106 |