CN208702391U - Minor diameter antireflux distributor - Google Patents
Minor diameter antireflux distributor Download PDFInfo
- Publication number
- CN208702391U CN208702391U CN201821322019.8U CN201821322019U CN208702391U CN 208702391 U CN208702391 U CN 208702391U CN 201821322019 U CN201821322019 U CN 201821322019U CN 208702391 U CN208702391 U CN 208702391U
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- China
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- antireflux
- threadedly coupled
- main body
- distributor
- minor diameter
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Abstract
The utility model relates to multi-zone flow regulating engineering device technique field more particularly to a kind of minor diameter antireflux distributors.The distributor includes lower contact, nipple, main body, centralizer body, guiding pen tip, outer housing, top connection and antireflux device；Lower contact is threadedly coupled with nipple；Nipple is connect with main body screw, and the main body is threadedly coupled with outer housing；Centralizer body is with outer housing using being threadedly coupled, and guiding pen tip is threadedly coupled with centralizer body and is fixed by pin, and outer housing is threadedly coupled with top connection；Main body is equipped with the inclined hole of antireflux；Antireflux device is activity device, is mounted in the inclined hole of antireflux.Minor diameter antireflux distributor provided by the utility model can effectively prevent stratum to return into tubing string and spit, and avoid reservoir sand from entering tubing string and cause test difficult；Well-flushing water can be effectively prevent to generate shunting in distributor simultaneously, returned out after so that well-flushing water is reached tubing string bottom, well-flushing efficiency and quality are utmostly improved.
Description
Technical field
The utility model relates to a kind of multi-zone flow regulating device more particularly to a kind of minor diameter antireflux distributors.
Background technique
Now with oil field development, injection well casing deformation well number increases year by year, wherein many wells need to take Reshaping Reinforcement measure,
Injection well run through casing size after Reshaping Reinforcement becomes smaller, and need to be dispensed using minor diameter technique, but existing minor diameter distributor is deposited
In well-flushing, injection well downhole flow regulator shunt influence well-flushing quality and while stopping well, return discharge sand and enter tubing string, cannot achieve the problems such as testing envelope.
Summary of the invention
(1) technical problems to be solved
The utility model provides a kind of minor diameter antireflux distributor, and to overcome existing minor diameter distributor, there are well-flushings
When injection well downhole flow regulator shunt influence well-flushing quality and stop returning discharge sand when well and enter tubing string, lead to not realize the problems such as testing envelope.
(2) technical solution
To solve the above problems, the utility model provides a kind of minor diameter antireflux distributor, comprising: lower contact, short circuit
Pipe, main body, centralizer body, guiding pen tip, outer housing, top connection and antireflux device；
The antireflux device includes: reset spring, antireflux sliding sleeve, ball-and-seat bar, lower valve base and ball-and-seat head；
The lower contact is threadedly coupled with nipple；
The nipple is connect with main body screw, and the main body is threadedly coupled with outer housing；
Centralizer body is with outer housing using being threadedly coupled, and guiding pen tip is threadedly coupled with centralizer body and is fixed by pin, outside
Shell is threadedly coupled with top connection；
The main body is equipped with the inclined hole of antireflux；
The antireflux device is activity device, is mounted in the inclined hole of antireflux, and it is inclined that antireflux sliding sleeve is embedded in antireflux
Kong Zhong forms seal chamber by sealing ring；
Reset spring is mounted on ball-and-seat bar, and ball-and-seat bar is connect with ball-and-seat head thread, lower valve base and ball-and-seat
Bar is sealed by sealing ring.
Preferably, the main body is equipped with central passage.
Preferably, the first through hole A being connected with central passage is equipped in the seal chamber.
Preferably, the main body is additionally provided with the second through-hole B that liquid leads to stratum.
Preferably, the inclined hole of blanking plug is additionally provided in the main body.
Preferably, the lower valve base is equipped with pressure guide hole.
(3) beneficial effect
Minor diameter antireflux distributor provided by the utility model can effectively prevent stratum to return into tubing string and spit, avoid ground
Layer sand enters tubing string and causes test difficult；Well-flushing water can be effectively prevent to generate shunting in distributor simultaneously, well-flushing water is made to reach pipe
It is returned out behind column bottom, utmostly improves well-flushing efficiency and quality.
Detailed description of the invention
Fig. 1 is the utility model embodiment minor diameter antireflux distributor overall structure diagram；
Fig. 2 is that schematic diagram is opened in the movement of the utility model embodiment minor diameter antireflux distributor ball-and-seat；
Fig. 3 is that schematic diagram is closed in the movement of the utility model embodiment minor diameter antireflux distributor ball-and-seat；
Fig. 4 is that the utility model embodiment minor diameter antireflux distributor tests envelope schematic diagram.
In figure:
1: lower contact；2: nipple；3: main body；4: centralizer body；5: guiding pen tip；6: outer housing；7: top connection；8: blocking
The inclined hole of device；9: reset spring；10: antireflux sliding sleeve；11: ball-and-seat bar；12: pressure guide hole；13: lower valve base；14: ball-and-seat head.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
As Figure 1-Figure 4, the utility model provides a kind of minor diameter antireflux distributor, specifically include lower contact 1,
Nipple 2, main body 3, centralizer body 4, guiding pen tip 5, outer housing 6, top connection 7 and antireflux device；With reference to Fig. 2, the antireflux
Device includes reset spring 9, antireflux sliding sleeve 10, ball-and-seat bar 11, pressure guide hole 12, lower valve base 13 and ball-and-seat head 14.
Wherein lower contact 1 is threadedly coupled with nipple 2, and nipple 2 is threadedly coupled with main body 3, main body 3 and 6 spiral shell of outer housing
Line connection, with outer housing 6 using being threadedly coupled, guiding pen tip 5 is threadedly coupled with centralizer body 4 and is fixed by pin centralizer body 4,
Outer housing 6 is threadedly coupled with top connection 7, which is equipped with the inclined hole 8 of blanking plug.
The main body 3 is equipped with central passage and the inclined hole of antireflux, and antireflux device is activity device, is mounted on antireflux
In inclined hole, antireflux sliding sleeve 10 is embedded in the inclined hole of antireflux, forms seal chamber by sealing ring, is equipped in the seal chamber and center
The first through hole A that channel is connected.Reset spring 9 is mounted on ball-and-seat bar 11, and ball-and-seat bar 11 and 14 spiral shell of ball-and-seat head
Line connection, lower valve base 13 and ball-and-seat bar 11 are sealed by sealing ring.The main body 3 is additionally provided with liquid and leads to towards the second of stratum
Hole B.
The outer diameter of distributor main body in the present embodiment is 100mm, internal diameter 46mm.
The working principle of the minor diameter antireflux distributor is discussed in detail in lower mask body: by minor diameter antireflux injection allocation
Tubing string G.I.H.
1) when injecting, tubing pressure is greater than 9 pressure of casing pressure and reset spring, and pressure enters antireflux from pressure guide hole 12
Cavity pushes ball-and-seat (being made of ball-and-seat bar 11 and ball-and-seat head 14) to overcome the spring force of reset spring 9, and downlink is opened,
Liquid in central passage enters by the hole A, flows through the hole B and enters stratum (see attached drawing 2).
2) when testing envelope, as shown in figure 4, C is seal-checking instrument device rough schematic, the glue bucket of seal-checking instrument device is fitted tightly over center
On channel (inner chamber body of main body 3), the fluid into central passage enters antireflux device inside cavity by pressure guide hole 12,
The logical lower promotion ball-and-seat bar 11 of pressure operation drives ball-and-seat head 14 to move down and (be moved to the left in figure), such as Fig. 2 shape after opening
14 opening state of ball-and-seat head among state, the hole A and the hole B, the hole A are connected to the hole B, such as lower layer's packer blow-by seal-checking instrument device meeting
It is collected into the pressure that lower layer is transmitted to from the hole B, such as sealing does not have pressure feedback
3) when stopping, the sensible pressure reduction in center at this time, strata pressure is greater than central passage pressure, and spring 9 is in spring
Power pushes ball-and-seat bar 11 that ball-and-seat head 14 is driven to move up under the action of strata pressure, finally as shown in figure 3, antireflux device
It closes, central passage is kept apart with the device external space, realizes antireflux function.
Minor diameter antireflux distributor structure meets casing damaged well diametric requirements, and cannot be poly- to polymer generation shearing, water
It drives general, does not influence normally to test envelope, dropping-fishing test technique is general with conventional distributor.Minor diameter antireflux distributor realize with
Lower function:
(1) outer diameter≤φ 104mm, internal diameter are more than or equal to φ 46mm, not only meet and reinforce the requirement of well section outer diameter, but also match with conventional
Note device internal diameter it is identical meet dropping-fishing test technique with routine separate injection tubing string it is general；
(2) after stopping note, when strata pressure be higher than tubing pressure when, prevent stratum from returning into tubing string and spit, avoid reservoir sand into
Entering tubing string causes test difficult.
(3) it during anti-flushing well, prevents well-flushing water from generating shunting in distributor, is returned after so that well-flushing water is reached tubing string bottom
Out, well-flushing efficiency and quality are improved.
(4) envelope channel is tested in conjunction with antireflux device, and channel is designed on the stuck point of seal-checking instrument device and distributor, not shadow
Sound tests envelope effect.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and deformations can also be made, these change
It also should be regarded as the protection scope of the utility model into deformation.
Claims (6)
1. a kind of minor diameter antireflux distributor characterized by comprising
Lower contact (1), main body (3), centralizer body (4), is oriented to pen tip (5), outer housing (6), top connection (7) and prevents nipple (2)
Reflux device；
The antireflux device includes: reset spring (9), antireflux sliding sleeve (10), ball-and-seat bar (11), lower valve base (13) and list
It flows valve head (14)；
The lower contact (1) is threadedly coupled with nipple (2)；
The nipple (2) is threadedly coupled with main body (3), and the main body (3) is threadedly coupled with outer housing (6)；
With outer housing (6) using being threadedly coupled, guiding pen tip (5) is threadedly coupled with centralizer body (4) and passes through pin centralizer body (4)
Fixed, outer housing (6) is threadedly coupled with top connection (7)；
The main body (3) is equipped with the inclined hole of antireflux；
The antireflux device is activity device, is mounted in the inclined hole of antireflux, and it is inclined that antireflux sliding sleeve (10) is embedded in antireflux
Kong Zhong forms seal chamber by sealing ring；
Reset spring (9) is mounted on ball-and-seat bar (11), and ball-and-seat bar (11) is threadedly coupled with ball-and-seat head (14), lower valve
Seat (13) and ball-and-seat bar (11) are sealed by sealing ring.
2. minor diameter antireflux distributor as described in claim 1 characterized by comprising the main body (3) is equipped with center
Channel.
3. minor diameter antireflux distributor as claimed in claim 2 characterized by comprising be equipped in the seal chamber with
The first through hole A that central passage is connected.
4. minor diameter antireflux distributor as claimed in claim 3 characterized by comprising the main body (3) is additionally provided with liquid
Body leads to the second through-hole B on stratum.
5. minor diameter antireflux distributor as described in claim 1 characterized by comprising be additionally provided on the main body (3)
The inclined hole of blanking plug (8).
6. minor diameter antireflux distributor as described in claim 1 characterized by comprising set on the lower valve base (13)
There are pressure guide hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821322019.8U CN208702391U (en) | 2018-08-16 | 2018-08-16 | Minor diameter antireflux distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821322019.8U CN208702391U (en) | 2018-08-16 | 2018-08-16 | Minor diameter antireflux distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208702391U true CN208702391U (en) | 2019-04-05 |
Family
ID=65942425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821322019.8U Active CN208702391U (en) | 2018-08-16 | 2018-08-16 | Minor diameter antireflux distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208702391U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356811A (en) * | 2021-06-09 | 2021-09-07 | 门万龙 | Oil well is with joining in marriage notes ware in pit |
-
2018
- 2018-08-16 CN CN201821322019.8U patent/CN208702391U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356811A (en) * | 2021-06-09 | 2021-09-07 | 门万龙 | Oil well is with joining in marriage notes ware in pit |
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