CN205840852U - Constant current open flow reducer after a kind of well fracturing - Google Patents
Constant current open flow reducer after a kind of well fracturing Download PDFInfo
- Publication number
- CN205840852U CN205840852U CN201620654616.5U CN201620654616U CN205840852U CN 205840852 U CN205840852 U CN 205840852U CN 201620654616 U CN201620654616 U CN 201620654616U CN 205840852 U CN205840852 U CN 205840852U
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- China
- Prior art keywords
- spool
- boss
- constant current
- flow
- valve seat
- Prior art date
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Abstract
This utility model provides constant current open flow reducer after a kind of multiple well fracturing, including the most threaded top connection, seating nipple and lower contact, is provided with permanent flow valve in described seating nipple.This reducer that this utility model provides, can remain constant current according to borehole pressure flow automatic regulation, it is not necessary to changes the flow nipple of different-diameter according to borehole pressure, reduces activity duration and workload.
Description
Technical field
This utility model belongs to open flow technical field after well fracturing, and after being specifically related to a kind of well fracturing, constant current is put
Spray reducer.
Background technology
At present, blowout prevention after well fracturing, be in relief line install flow nipple to control open flow pressure and flow,
Need moment observation place stressor layer, the situation of change of base area stressor layer during open flow, adjust flow nipple size in time, prevent
Owing to strata pressure declines too fast, cause stratum to tell sand, affect fracturing effect.And owing to fracturing fluid containing fracturing sand,
During open flow, flow nipple is produced erosion effect, cause oil nozzle aperture to strengthen, need to stop well in time and change flow nipple, increase
Workload, and easily cause security incident when changing flow nipple.
Utility model content
The purpose of this utility model is to overcome to need in prior art to stop well replacing flow nipple in time, increases workload
Problem.
To this end, this utility model provides constant current open flow reducer after a kind of multiple well fracturing, including depending on from top to bottom
Secondary threaded top connection, seating nipple and lower contact, be provided with permanent flow valve in described seating nipple.
Described permanent flow valve includes that valve seat, spool, valve rod, described valve seat are the cylinder that there is convex shoulder lower end, convex shoulder outer wall and work
Making cylinder inwall to connect, described valve seat upper end is spool, and this spool top is provided with boss, and this boss is provided with flow channel for liquids, described
Being provided with blind hole in the middle part of boss, described top connection middle and lower part is provided with dividing plate, and this dividing plate center is provided with screwed hole, and circumference is uniformly provided with many
Individual circular hole, in the middle part of described valve rod one end and spool boss, blind hole is slidably connected, and the other end is threadeded with top connection, described valve seat
Between convex shoulder and spool boss, spring is installed.
Described lower contact top is provided with positive stop lug boss, and described top connection dividing plate is up-small and down-big, its small end diameter with under connect
Head positive stop lug boss small end is equal.
Described valve seat is threadeded with seating nipple.
Described valve seat bore is 30mm.
The beneficial effects of the utility model are: this reducer that this utility model provides, can be automatic according to borehole pressure
Regulation flow, remain constant current, it is not necessary to according to borehole pressure change different-diameter flow nipple, reduce the activity duration and
Workload.
It is described in further details below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, lower contact；2, spring；3, seating nipple；4, valve seat；5, spool；6, valve rod；7, top connection；8, convex shoulder；9、
Dividing plate；10, boss；11, flow channel for liquids；12, circular hole；13, positive stop lug boss.
Detailed description of the invention
Embodiment 1:
Present embodiments provide constant current open flow reducer after a kind of multiple well fracturing, including screw thread the most successively even
Top connection 7, seating nipple 3 and the lower contact 1 connect, is provided with permanent flow valve in described seating nipple 3.
Work process: close all valves before open flow, connect pipeline, connects top connection 7 and well head pipeline, under connect
1 and downstream line connect, open head valve during open flow, fluid after downstream line entrance lower contact 1 through seating nipple 3
Interior permanent flow valve keeps constant flow, top connection 7 be expelled to well head pipeline.
The present embodiment reducer need not change the flow nipple of different-diameter according to borehole pressure, remains that flow is permanent
Fixed, reduce activity duration and workload.
Embodiment 2:
On the basis of embodiment 1, present embodiments provide constant current open flow after a kind of multiple well fracturing as shown in Figure 1
Reducer, described permanent flow valve includes that valve seat 4, spool 5, valve rod 6, described valve seat 4 have the cylinder of convex shoulder 8, convex shoulder 8 outer wall for lower end
Being connected with seating nipple 3 inwall, described valve seat 4 upper end is spool 5, and this spool 5 top is provided with boss 10, and this boss 10 is provided with liquid
Body runner 11, is provided with blind hole in the middle part of described boss 10, described top connection 7 middle and lower part is provided with dividing plate 9, and this dividing plate 9 center is provided with spiral shell
Pit, circumference is uniformly provided with multiple circular hole 12, and in the middle part of described valve rod 6 one end and spool 5 boss 10, blind hole is slidably connected, the other end
Threaded with top connection 7, between described valve seat 4 convex shoulder 8 and spool 5 boss 10, spring 2 is installed.
Permanent flow valve current constant control principle:
Spool 5 can slide on valve rod 6, regulates spool 5 at valve seat 4 by the common effect of fluid pressure and spring 2
Position control valve opening, due to the effect of spring 2 power during original state, spool 5 is in topmost, and now permanent flow valve is in entirely
Open state, inflow-rate of water turbine is maximum；When there being fluid to flow through, spool 5 moves down under the pressure of fluid, and valve opening reduces, inflow-rate of water turbine
Reduce, thus keep constant flow.
In the present embodiment, lower contact 1 top is provided with positive stop lug boss 13, and described top connection 7 dividing plate 9 is up-small and down-big, its small end
Diameter is equal with lower contact 1 positive stop lug boss 13 small end.Positive stop lug boss 13 plays the effect limiting internal structure installation site.
Work process:
Close all valves before open flow, connect pipeline, small end and the well head pipeline of top connection 7 are connected, lower contact 1
Small end and downstream line connect, open head valve during open flow, spool 5 is in the common effect of borehole pressure and spring 2
Under can slide on valve rod 6, due to the effect of spring 2 power during original state, spool 5 is in topmost, and valve is shown in a fully open operation,
Inflow-rate of water turbine is maximum；When there being fluid successively through seating nipple 3 center flow channels, spool 5 and valve seat 4 after downstream line enters lower contact 1
Gap, spool 5 uniformly set with flow channel for liquids 11, top connection 7 dividing plate 9 circumference on seating nipple 3 annular space, spool 5 boss 10
Multiple circular holes 12, are finally expelled to well head pipeline.In the process, spool 5 moves down under the pressure of fluid, and valve opening subtracts
Little, inflow-rate of water turbine reduces, and along with open flow process, fluid pressure can be gradually lowered, then valve opening can be gradually increased, thus keeps flow
Constant.
Valve seat 4 in the present embodiment is threadeded with seating nipple 3.Valve rod 6 is a cylindrical metal bar, and one end is machined with spiral shell
Stricture of vagina, and the female thread connection of top connection 7 inside center, be convenient for changing permanent flow valve.Wherein, valve seat 4 internal diameter is 30mm.
In sum, this utility model compared with prior art, has the advantage that
1., according to borehole pressure flow automatic regulation, it is not necessary to change the flow nipple of different-diameter according to borehole pressure, begin
Keep constant flow eventually, reduce activity duration and workload；
2. reduce the pressure of liquid in well, reduce the liquid erosion to downstream line.
Parts that the present embodiment describes the most in detail and structure belong to the well-known components of the industry and common structure or conventional hands
Section, describes the most one by one.
Exemplified as above is only to illustration of the present utility model, is not intended that protection domain of the present utility model
Limit, within the every and same or analogous design of this utility model belongs to protection scope of the present invention.
Claims (4)
1. constant current open flow reducer after a well fracturing, it is characterised in that: include the most threaded upper
Joint (7), seating nipple (3) and lower contact (1), described seating nipple is provided with permanent flow valve in (3)；
Described permanent flow valve includes valve seat (4), spool (5), valve rod (6), and described valve seat (4) is the cylinder that there are convex shoulder (8) lower end, convex
Shoulder (8) outer wall is connected with seating nipple (3) inwall, and described valve seat (4) upper end is spool (5), and this spool (5) top is provided with boss
(10), this boss (10) is provided with flow channel for liquids (11), and described boss (10) middle part is provided with blind hole, in described top connection (7) under
Portion is provided with dividing plate (9), and this dividing plate (9) center is provided with screwed hole, and circumference is uniformly provided with multiple circular hole (12), described valve rod (6)
Holding and be slidably connected with spool (5) boss (10) middle part blind hole, the other end is threadeded with top connection (7), described valve seat (4) convex shoulder
And spring (2) is installed between spool (5) boss (10) (8).
Constant current open flow reducer after a kind of well fracturing the most according to claim 1, it is characterised in that: described lower contact
(1) top is provided with positive stop lug boss (13), and described top connection (7) dividing plate (9) is up-small and down-big, its small end diameter and lower contact (1)
Positive stop lug boss (13) small end is equal.
Constant current open flow reducer after a kind of well fracturing the most according to claim 1 and 2, it is characterised in that: described valve
Seat (4) is threadeded with seating nipple (3).
Constant current open flow reducer after a kind of well fracturing the most according to claim 1 and 2, it is characterised in that: described valve
Seat (4) internal diameter is 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620654616.5U CN205840852U (en) | 2016-06-28 | 2016-06-28 | Constant current open flow reducer after a kind of well fracturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620654616.5U CN205840852U (en) | 2016-06-28 | 2016-06-28 | Constant current open flow reducer after a kind of well fracturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205840852U true CN205840852U (en) | 2016-12-28 |
Family
ID=57620491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620654616.5U Expired - Fee Related CN205840852U (en) | 2016-06-28 | 2016-06-28 | Constant current open flow reducer after a kind of well fracturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205840852U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949277A (en) * | 2017-05-04 | 2017-07-14 | 贵州煤层气能源开发有限公司 | A kind of fracturing fluid recovery (backflow) motor valve |
| CN115434674A (en) * | 2022-09-29 | 2022-12-06 | 中国石油天然气集团有限公司 | Multifunctional throttling plug at tail end of speed pipe and using method |
-
2016
- 2016-06-28 CN CN201620654616.5U patent/CN205840852U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949277A (en) * | 2017-05-04 | 2017-07-14 | 贵州煤层气能源开发有限公司 | A kind of fracturing fluid recovery (backflow) motor valve |
| CN106949277B (en) * | 2017-05-04 | 2022-12-16 | 贵州煤层气能源开发有限公司 | Automatic regulating valve for flow of return fracturing fluid |
| CN115434674A (en) * | 2022-09-29 | 2022-12-06 | 中国石油天然气集团有限公司 | Multifunctional throttling plug at tail end of speed pipe and using method |
| CN115434674B (en) * | 2022-09-29 | 2024-04-09 | 中国石油天然气集团有限公司 | Multifunctional throttling blanking plug at tail end of speed pipe and use method |
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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: 20161228 Termination date: 20210628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |