CN202937238U - Beforehand throttle stab-resistant water distributor - Google Patents
Beforehand throttle stab-resistant water distributor Download PDFInfo
- Publication number
- CN202937238U CN202937238U CN 201220578135 CN201220578135U CN202937238U CN 202937238 U CN202937238 U CN 202937238U CN 201220578135 CN201220578135 CN 201220578135 CN 201220578135 U CN201220578135 U CN 201220578135U CN 202937238 U CN202937238 U CN 202937238U
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- China
- Prior art keywords
- piston
- center tube
- guide sleeve
- injection well
- flow guide
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Abstract
The utility model provides a beforehand throttle stab-resistant water distributor, which comprises an upper connector, a lower connector, an upper central pipe, a lower central pipe, a piston assembly and a throttle pipe, wherein the upper end of the upper central pipe is connected to the upper connector; the lower end of the lower central pipe is connected to the lower connector; the upper central pipe and the lower central pipe are connected to an upper flow guiding sleeve in the middle; a lower flow guiding sleeve is arranged at the bottom of the lower central pipe; the upper flow guiding sleeve and the lower flow guiding sleeve are connected by the throttle pipe therebetween; the upper central pipe above the upper flow guiding sleeve is sleeved with the piston assembly; the piston assembly comprises a control piston and a seal piston; the control piston and the upper central pipe form an annular piston cavity; the piston cavity is communicated with the upper flow guiding sleeve below; the piston cavity is internally sleeved with the seal piston; the lower part of the control piston is connected with the seal piston through threads; the lower end of the seal piston is connected with a seal adjusting ring; and a seal ring is arranged between the seal piston and the seal adjusting ring. The beforehand throttle stab-resistant water distributor is conducive to reducing pulling and running deployment workload, prolongs the effective period of a pipe column in the well, and reduces ineffective water injection rate.
Description
Technical field
The utility model relates to the 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 the field mainly contains hollow distributor and eccentric injection mandrel at present, is mainly used in the layering water distribution of water injection well more than 2 layers.Along with deepening continuously of fine development, the large pressure reduction dispensing well increasing year by year that the interlayer suction differs greatly, the oil field at present adopts conventional injection well downhole flow regulator to allocate, exist " allocate not open or high permeability formation step-down throttling control difficulty large ", " the water injection well choke thorn is large ", " the injection well downhole flow regulator thorn is bad " problem that phenomenon is comparatively serious, not only increased allotment operation number of times, cost of production is increased; Reduce the counter-flow resisting performance of injection well downhole flow regulator, shorten tubing string in the well period of validity; And can cause present heterogeneous reservoir seperated layer water injection interval qualification rate lower, can not be the 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 purpose of this utility model is to provide pre-throttling anti-stab injection well downhole flow regulator, help to reduce pulling allotment workload, extend tubing string in the well period of validity, reduce invalid water injection rate.
The purpose of this utility model can be achieved by the following technical measures:
The anti-stab injection well downhole flow regulator of this pre-throttling comprises 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 all is connected on flow guide sleeve in the centre, be provided with lower flow guide sleeve bottom lower center tube, connect with throttle pipe between the flow guide sleeve of described up and down, on the upper center tube above described upper flow guide sleeve, cover has piston assembly.
The purpose of this utility model also can be achieved by the following technical measures:
Described piston assembly comprises control piston, packed-piston, form the annular space plunger shaft between described control piston and upper center tube, the upper flow guide sleeve of plunger shaft and below is connected state, in the plunger shaft inner sleeve, packed-piston is arranged, the control piston bottom is connected with packed-piston by screw thread, described packed-piston lower end connects the sealing adjustable ring, and sealing ring is set both.
In described plunger shaft, the packed-piston top also is provided with the joint ring that is fastened on upper center tube, the control piston upper surface is withstood in described joint ring upper surface location, all sides fit tightly on the control piston circumferential inner wall, between described joint ring and control piston, sealing ring are set.
Described piston assembly top is provided with the spring that is enclosed within on upper center tube, and described top connection outside cover has the adjusted ring, and described spring upper end withstands on the adjusted ring by baffle ring.
Described throttle pipe two ends are connected on the flow guide sleeve of up and down by the throttle pipe connector respectively.
Described lower flow guide sleeve upper end is threaded connection on the lower center tube outer wall, the lower end is threaded connection on the lower contact outer wall, form annular space between described lower flow guide sleeve, lower center tube, lower contact three, offer the through hole that is communicated to this annular space on lower center tube, 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 also are provided with sealing ring.
Described throttle pipe is the multi-turn pressure pipe, is enclosed within the lower center tube periphery,
Described multi-turn pressure pipe is the withstand voltage metal tube of multi-turn.
Compared to prior art, the utlity model has following beneficial effect:
1, water distribution is controlled in the high permeability formation throttling of satisfying interlayer difference between reservoir pre ssure and injection pressure＞5MPa well;
2, prevent that effectively the large thorn of injection well downhole flow regulator water outlet position and water nozzle thorn is bad;
When 3, preventing from stopping annotating in well dirt cause injection well downhole flow regulator to stop up through counter tell to oil pipe of injection well downhole flow regulator or oil pipe in the problem of dirt deposition.
Description of drawings
Fig. 1 is the structural representation of the anti-stab injection well downhole flow regulator of the pre-throttling of the utility model.
In figure: the 1-top connection; 2,7,10,12,14-sealing ring; 3 adjusted rings; Adjustable ring under 22-; The 4-baffle ring; The 5-upper center tube; The 6-spring; The 8-control piston; The 9-joint ring; The 11-packed-piston; 13-seals adjustable ring; Flow guide sleeve on 15; Flow guide sleeve under 20-; 16,19-throttle pipe connector; The 17-throttle pipe; The 18-lower center tube; The 21-lower contact.
The specific embodiment
Relevant detailed description of the present utility model and technology contents coordinate description of drawings as follows, yet accompanying drawing only provides the use of reference with explanation, and the utility model is limited.
According to shown in Figure 1, top connection 1 is inner to be threaded connection with upper center tube 5, and both are by sealing ring 2 sealings.Top connection is outside to be threaded connection with adjusted ring 3.Baffle ring 4 is arranged on upper center tube 5 outsides, top adjustable ring 3 location, top, 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 threads and control piston 8 are threaded connection, packed-piston 11 lower thread are connected with sealing adjustable ring 13, and sealing ring 12 is equipped with in the 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 joint ring 9 location, upper end.Upper center tube 5 is threaded connection with upper flow guide sleeve 15 respectively with lower center tube 18, 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 the lower center tube outside, and the two ends, up and down are contained in respectively throttle pipe connector 16,19 inside, and the soft metal distortion by connector 16,19 ends is fixed and seals respectively.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 sealing to injected water with lower flow guide sleeve 20 by sealing ring.
When going into the well, injection well downhole flow regulator is connected near the tubing string position oil reservoir that needs 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 to make packer setting, but also the dead fuse of pulling coordinates compression packer to set.
During water filling, injected water is by the weep hole pressure transmission of upper center tube 5, under less injection pressure, the control piston 8 poor promotion control pistons 8 of external and internal pressure Compress Spring together with packed-piston 11 is up, open in advance by the waterflood path between control piston 8 and upper flow guide sleeve 15, avoided high-pressure injected water to attack sealing ring 12 and control piston 8 lower ends directly, prevented that the delivery port thorn is bad.Injected water carries out reducing pressure by regulating flow by weep hole, lower flow guide sleeve 20 and the throttle pipe 17 of lower center tube 18 successively simultaneously, injects the stratum with lower pressure in the waterflood path of opening in advance, thereby realizes the throttling control water filling under the large pressure reduction of interlayer.
When stopping annotating, control piston 8 is descending under the restoring force effect of spring 6 together with packed-piston 11, thereby closes by the waterflood path between control piston 8 and upper flow guide sleeve 15, can prevent effectively that in pit shaft, counter the telling of dirt caused the water nozzle clogging in injection well downhole flow regulator.
The above is only preferred embodiment of the present utility model, and non-in order to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (9)
1. the pre-anti-stab injection well downhole flow regulator of throttling, it is characterized in that, 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 all is connected on flow guide sleeve in the centre, is provided with lower flow guide sleeve bottom lower center tube, connect with throttle pipe between the flow guide sleeve of described up and down, on the upper center tube above described upper flow guide sleeve, cover has piston assembly.
2. the anti-stab injection well downhole flow regulator of pre-throttling according to claim 1, it is characterized in that, described piston assembly comprises control piston, packed-piston, form the annular space plunger shaft between described control piston and upper center tube, the upper flow guide sleeve of plunger shaft and below is connected state, in the plunger shaft inner sleeve, packed-piston is arranged, and the control piston bottom is connected with packed-piston by screw thread, described packed-piston lower end connects the sealing adjustable ring, and sealing ring is set both.
3. the anti-stab injection well downhole flow regulator of pre-throttling according to claim 2, it is characterized in that, in described plunger shaft, the packed-piston top also is provided with the joint ring that is fastened on upper center tube, the control piston upper surface is withstood in described joint ring upper surface location, all sides fit tightly on the control piston circumferential inner wall, between described joint ring and control piston, sealing ring are set.
4. the anti-stab injection well downhole flow regulator of pre-throttling according to claim 1, is characterized in that, described piston assembly top is provided with the spring that is enclosed within on upper center tube, and described top connection outside cover has the adjusted ring, and described spring upper end withstands on the adjusted ring by baffle ring.
5. 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 the flow guide sleeve of up and down by the throttle pipe connector respectively.
6. the anti-stab injection well downhole flow regulator of pre-throttling according to claim 1, it is characterized in that, described lower flow guide sleeve upper end is threaded connection on the lower center tube outer wall, the lower end is threaded connection on the lower contact outer wall, form annular space between described lower flow guide sleeve, lower center tube, lower contact three, offer the through hole that is communicated to this annular space on lower center tube, this annular space upper end is communicated to throttle pipe.
7. 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 also are provided with sealing ring.
8. the anti-stab injection well downhole flow regulator of pre-throttling according to claim 1, is characterized in that, described throttle pipe is the multi-turn pressure pipe, is enclosed within the lower center tube periphery.
9. the anti-stab injection well downhole flow regulator of pre-throttling according to claim 8, is characterized in that, described multi-turn pressure pipe is the withstand voltage metal tube of multi-turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578135 CN202937238U (en) | 2012-11-06 | 2012-11-06 | Beforehand throttle stab-resistant water distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578135 CN202937238U (en) | 2012-11-06 | 2012-11-06 | Beforehand throttle stab-resistant water distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937238U true CN202937238U (en) | 2013-05-15 |
Family
ID=48321482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220578135 Expired - Fee Related CN202937238U (en) | 2012-11-06 | 2012-11-06 | Beforehand throttle stab-resistant water distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937238U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806883A (en) * | 2012-11-06 | 2014-05-21 | 中国石油化工股份有限公司 | Pre-throttling anti-stabbing water distributor |
-
2012
- 2012-11-06 CN CN 201220578135 patent/CN202937238U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806883A (en) * | 2012-11-06 | 2014-05-21 | 中国石油化工股份有限公司 | Pre-throttling anti-stabbing water distributor |
| CN103806883B (en) * | 2012-11-06 | 2016-04-27 | 中国石油化工股份有限公司 | The anti-stab injection well downhole flow regulator of pre-throttling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20141106 |
|
| EXPY | Termination of patent right or utility model |