CN206608159U - A kind of thermal recovery switch - Google Patents
A kind of thermal recovery switch Download PDFInfo
- Publication number
- CN206608159U CN206608159U CN201720150891.8U CN201720150891U CN206608159U CN 206608159 U CN206608159 U CN 206608159U CN 201720150891 U CN201720150891 U CN 201720150891U CN 206608159 U CN206608159 U CN 206608159U
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- CN
- China
- Prior art keywords
- rotating plate
- lower contact
- thermal recovery
- push rod
- guide ring
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Abstract
The utility model is related to a kind of thermal recovery switch, including outer tube and top connection, the rotating plate for blocking top connection lower end is rotatably equipped with outer tube, the spring return mechanism of active force for being supplied to rotating plate to get lodged in top connection lower opening is also equipped with outer tube, spring return mechanism includes the push rod that is hinged on rotating plate and the back-moving spring for providing upward thrust for push rod, and the pin joint of the rotating plate and push rod to the horizontal range between the rotation axis of rotating plate is less than the intubation for the unlatching of pushing tow rotating plate to the point of application of rotating plate to the horizontal range between the rotation axis of rotating plate.Switched using thermal recovery of the present utility model, reduce the arm of force size of the resistance of rotating plate institute drawn stem by adjusting push rod with rotating plate pin joint position, so that the resistance that push rod is applied to rotating plate reduces, and then the required thrust from intubation when rotating plate is opened is reduced, solve rotating plate and open laborious technical problem.
Description
Technical field
The utility model is related to oil-field thick-oil thermal recovery downhole tool, and in particular to a kind of thermal recovery switch.
Background technology
In current thick oil thermal extraction, exploited using centrifugal pump and screw pump, due to the heatproof of centrifugal pump and screw pump
It is limited in one's ability, it is necessary to be respectively adopted twice tubing string carry out steam injection and recover the oil two processes, first insert gas injection tube column carry out gas injection behaviour
Make, the gas injection tube column that recurs out carries out stewing well, boil in a covered pot over a slow fire insertion flow string after well certain time and carry out oil-recovery operations, one could be completed
Handle up the cycle.But after steam injection and open flow terminate, because thermal production well also has blowing ability, when acting steam injection string, to prevent oil
It is waterborne gush, the problems such as stratum ability is further reduced, it is necessary to carry out kill-job operation to oil well.During kill-job operation, injected into well
Well killing fluid, well killing fluid easily absorbs pit shaft ambient heat, makes near wellbore zone temperature reduction, cold damage is caused to oil reservoir, turn after taking out
Driven a well difficulty, or even oil well is killed；On the other hand, because well killing fluid is easily polluted to oil reservoir, to water sensitivity heavy crude reservoir
For be particularly acute.
Patent CN104074493A discloses the anti-pollution down-hole switch of thermal recovery, belongs to petroleum thermal recovery technical field, and its is main
Top connection and lower contact are connected including outer tube and with outer tube two ends, outer tube is provided with the rotating plate of break-make oil circuit and rotating plate is carried out
The spring return mechanism of reset, rotating plate one end is hinged in top connection, and the other end is hinged on push rod, and push rod lower end is hinged on multiple
On the spring base of position spring, back-moving spring one end is withstood on spring base, and the other end is withstood in the lower contact of bottom.In use, logical
Cross intubation to be inserted from above and push up out rotating plate, drive push rod to move down when rotating plate rotates, band flexible spring seat is outside inside pipe to downslide
It is dynamic, compression reseting spring；When changing flow string, drive rotating plate resets in the presence of above carrying intubation, back-moving spring, closes gas circuit.Should
Gushed when the anti-pollution down-hole switch of thermal recovery can effectively solve out gas injection tube column on profit, the problems such as stratum ability is reduced, and nothing
Kill-job operation is needed, prevents that well killing fluid cold damage and viscous crude are contaminated.But there is also following defect：（1）It is intubated the ring by bottom
Shape end face is all withstood on rotating plate, and its point of application to rotating plate concentrates on the center of rotating plate, and exists because rotating plate is inside and outside
Great pressure differential so that rotating plate is caused high effort for when opening；（2）The pin joint of rotating plate and push rod is located at rotating plate and rotated away from itself
The side of axis, the arm of force of resistance when rotating plate is outwarded winding by push rod is maximum, causes rotating plate to be hindered by from push rod accordingly
Power is larger, also results in when rotating plate is opened and causes high effort for；（3）The top of the switch lower contact is planar structure, easily deposits junk,
Knockout, which is deposited in spring bottom, can make spring sand card, it is impossible to freely stretch, and cause switch opening and closing disabler.
Utility model content
The purpose of this utility model is to provide a kind of thermal recovery switch, opened arduously with solving the rotating plate in thermal recovery switch
Technical problem.
To achieve the above object, a kind of technical scheme of thermal recovery switch of the utility model is：A kind of thermal recovery switch, including it is outer
It is rotatably equipped with pipe and top connection, outer tube in the rotating plate for blocking top connection lower end, outer tube and is also equipped with being supplied to rotating plate to block up
In the spring return mechanism of the active force of top connection lower opening, spring return mechanism includes the push rod being hinged on rotating plate and is
Push rod provides the back-moving spring of upward thrust, the pin joint of the rotating plate and push rod to the level between the rotation axis of rotating plate
Distance, which is less than, is used for intubation that pushing tow rotating plate opens to the point of application of rotating plate to the horizontal range between the rotation axis of rotating plate.Adopt
Switched with thermal recovery of the present utility model, reduce the resistance of rotating plate institute drawn stem by adjusting push rod and rotating plate pin joint position
Arm of force size so that the resistance that push rod is applied to rotating plate reduces, and then the required thrust from intubation when reducing rotating plate unlatching,
Solve rotating plate and open laborious technical problem.
Further, thermal recovery switch also includes the lower contact for being connected to the outer tube lower end, the lower end of the back-moving spring
Top has in lower contact and is circumferentially interval with from bullet in the spring supporting face of support back-moving spring, lower contact in lower contact
What spring supporting surface led to lower contact endoporus leads sand passage.When leading the setting of sand passage and can prevent that back-moving spring is supported in lower contact
Cause the sand card phenomenon of back-moving spring because knockout accumulates.
Further, thermal recovery switch also includes the lower contact component for being connected to the outer tube lower end, the lower contact component
Including lower contact and releasable connection the sand control guide ring in lower contact, the lower end of the back-moving spring is withstood on sand control guide ring
On end face, the endoporus of the sand control guide ring is connected with lower contact endoporus, is circumferentially interval with sand control guide ring from its upper end
What its endoporus was led in face leads sand passage.The setting of sand control guide ring can not only withstand back-moving spring, and can prevent from resetting
Cause the sand card phenomenon of back-moving spring because knockout accumulates when spring supporting is in lower contact.
Further, the sand passage of leading is skewed slot.Skewed slot has relative to through hole is not easily blocked and blocks easy to clean
Advantage.
Further, mounting hole of the lower contact provided with the installation sand control guide ring, the sand control guide ring
Upper surface is sunk to inside lower contact, the inner hole surface being located on the upside of sand control guide ring and the back-moving spring radial direction block of mounting hole.It is anti-
The cylindrical chamber that sand guide ring is formed with lower contact can not only shore the lower end of back-moving spring, and can prevent from resetting bullet
The radial displacement of spring, reaches the effect of righting back-moving spring.
Brief description of the drawings
Fig. 1 is a kind of thermal recovery switch specific embodiment structural representation of the utility model；
Fig. 2 is to lead sand passage and its structural representation of embodiment 2 with back-moving spring correspondence position on sand control guide ring；
Fig. 3 is to lead sand passage and its structural representation of embodiment 3 with back-moving spring correspondence position on sand control guide ring；
Fig. 4 is to lead sand passage and its structural representation of embodiment 4 with back-moving spring correspondence position on sand control guide ring；
Fig. 5 is to lead sand passage and its structural representation of embodiment 5 with back-moving spring correspondence position on sand control guide ring；
Fig. 6 is Fig. 5 sand control guide ring and the top view for leading sand channel embodiment 5；
In figure：1- top connections；3- power-assisted push pipes；31- pushing tows tip；4- fixing key seats；5- high temperature seals；6- rotating plates；
7- steady pins；8- push rods；9- spring bases；10- back-moving springs；11- outer tubes；12- sand control guide rings；13- lower contacts；14- leads sand
Passage.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
A kind of specific embodiment of thermal recovery switch of the present utility model, as shown in figure 1, thermal recovery switch include top connection 1, under
Joint 13, outer tube 11, power-assisted push pipe 3, rotating plate switching mechanism and spring return mechanism.Top connection 1 and the difference screw thread of lower contact 13
The both ends of outer tube are connected to, rotating plate switching mechanism is connected at top connection 1, the lower end of top connection 1 can be blocked, to control
The break-make on liquefaction road.Spring return mechanism includes the back-moving spring 10 that push rod 8, spring base 9 and top are withstood in spring base 9.Bullet
Spring resetting-mechanism is provided to the elastic acting force that rotating plate 6 gets lodged in the lower opening of top connection 1.The upper end of push rod 8 is hinged with rotating plate 6,
Lower end is hinged with spring base 9, back-moving spring 10 can the motion upwards of push the spring seat 9, to be supplied to push rod 8 to promote rotating plate 6 to push away
Power.
Power-assisted push pipe 3 is located inside top connection 1, and by above and below on the convex key of rotation stop and the endoporus of top connection 1 of its periphery
The cooperation of the rotation stop keyway in direction, realizes the relative slip of power-assisted push pipe 3 and top connection 1.The bottom of power-assisted push pipe 3 has pushing tow point
End 31, pushing tow tip 31 is pen sharp structure, in order to which stress point is located at side when opening rotating plate 6 with its top, facilitates rotating plate 6 to open
Open, while pen sharp structure has an inclined-plane, rotating plate opening can be easy to become larger.Pushing tow tip 31 is to tilt pipe
Prune the tip for the entirety that an angle is formed so that only one point stress during pushing tow.Pushing tow tip 31 withstands on rotating plate center
On the point of rotation axis farthest, the arm of force is maximum herein, opens most laborsaving during rotating plate 6.
Rotating plate 6 is plectane, and rotating plate 6 can be rotated to open and close oil circuit around with the pin joint of fixing key seat 4.Push rod 8 with
The pin joint of rotating plate 6 is located at the near center location of rotating plate 6, so that 31 pushing tow rotating plates 6 of pushing tow tip are more laborsaving when opening, together
When due to the space at rotating plate 6 it is bigger, also allow for push rod 8 and its hinge mounted.In other embodiments, rotating plate 6 and push rod 8
If between the stress point for the thrust that rotating shaft and rotating plate 6 of the pin joint positioned at rotating plate 6 are intubated, i.e. rotating plate 6 and push rod 8
Pin joint is less than rotation axis of the intubation to the point of application of rotating plate 6 to rotating plate 6 to the horizontal range between the rotation axis of rotating plate 6
Between horizontal range, because the pin joint of rotating plate 6 and push rod 8 is closer to the rotation axis of rotating plate 6, the resistance of the drawn stem 8 of rotating plate 6
The arm of force of power is also just smaller, and corresponding rotating plate 6 power required when opening is also smaller, but in actual selection rotating plate 6 and push rod 8
Not only need the problem of whether rotating plate unlatching is laborious considered during pin joint, whether the installation that also take into account push rod 8 facilitates,
The problems such as whether overall structure of rotating plate 6 is firm, therefore need consideration to add when selecting the pin joint position of rotating plate 6 and push rod 8
The reality reasonable Arrangement such as work, installation.
The upper and lower ends of outer tube 11 be provided with internal thread segment, be threadedly coupled respectively with top connection 1 and lower contact 13, outer tube 11 with
Top connection 1 and the junction of lower contact 13 are additionally provided with high temperature seal 5, with more preferable closed oil circuit.Top connection 1 and lower contact 13 have
Penetrating endoporus, so as to the oil circuit connected with the formation of outer tube 11.
Fixing key seat 4 is annular seating, is threadedly connected with top connection 1.In other embodiments, also can be using top
The modes such as silk, bolt are connected.High temperature seal 5 is provided between fixing key seat 4 and rotating plate 6, to reach more preferable closed oil circuit
Effect.
Spring base 9 is the cylindrical casing slided up and down in outer tube 11, and its top side is hinged with push rod 8, and bottom is provided with
The chamber of the upper end of back-moving spring 10 is accommodated, to prevent the upper end radial misalignments of back-moving spring 10.
Thermal recovery switch also includes having from the spring supporting face of back-moving spring 10 on sand control guide ring 12, sand control guide ring 12
The endoporus for leading to lower contact 13 leads sand passage 14, in order to the knockout of the lower end of back-moving spring 10 can flow out, to avoid multiple
The position lower end of spring 10 forms accumulation and causes back-moving spring sand card, in other embodiments, can also be not provided with sand control guide ring 12, directly
Sand passage 14 will be led and be located in lower contact 13 by connecing.As shown in figure 1, leading sand passage 14 to be arranged on sand control guide ring 12 from sand control
The endoporus of joint 13 tilts and connects the skewed slot of the endoporus of lower contact 13 upper end of guide ring 12 downwards, and skewed slot was in sand control guide ring 12 weeks
To arranged for interval.In other embodiments, the hole of sand passage 14 or the connection endoporus of lower contact 13 shown in Fig. 2 to Fig. 3 is led
Road；Certainly, sand passage 14 or Fig. 5 and the step hole slot spaced apart in the circumferential shown in Fig. 6 are led.As shown in figure 1, anti-
Sand guide ring 12 is cyclic structure, in other embodiments, and sand control guide ring 12 is alternatively the stepped annular shown in Fig. 3 and Fig. 4
Structure.Sand control guide ring 12 is located in the endoporus of lower contact 13, and coordinates with the screw thread of lower contact 13.The upper surface of sand control guide ring 12
Endoporus formation with lower contact 13 accommodates the cylindrical chamber of the lower end of back-moving spring 10, to prevent the lower end of back-moving spring 10 radially wrong
Position.The top of sand control guide ring 12 has the oblique notching construction of point valve, in order to water conservancy diversion formation sand production, prevents spring sand card.
Thermal recovery switch of the present utility model is in use：During gas injection, tripping in intubation, intubation withstands rotating plate and pushes rotation open
Plate 6, rotating plate 6 promotes the push rod 8 of bottom descending, with compression reseting spring 10, because the pin joint of rotating plate 6 and push rod 8 is located at rotation
The lower end of the center of plate 6 so that the arm of force of the resistance of 6 drawn stems 8 of rotating plate is smaller so that rotating plate 6 is required when opening to be opened
Qi Li is reduced, and opens more laborsaving, and intubation is further descending to push rotating plate 6 open completely, realizes that oil circuit is connected completely, carries out steam injection behaviour
Make；During stewing well, intubation is above put forward, the push the spring of back-moving spring 10 seat 9 is up, drives push rod 8 to reset, and push rod 8 promotes rotary switch
Close, rotating plate 6 compresses the formation sealing of high temperature seal 5；Steam injection string is replaced by flow string, after production temperature is reached,
Tripping in intubation open flow production.
Claims (5)
1. the rotating plate for blocking top connection lower end is rotatably equipped with a kind of thermal recovery switch, including outer tube and top connection, outer tube, outside
The spring return mechanism of active force for being supplied to rotating plate to get lodged in top connection lower opening, spring return mechanism bag are also equipped with pipe
Include the push rod being hinged on rotating plate and the back-moving spring that upward thrust is provided for push rod, it is characterised in that：The rotating plate and push away
The pin joint of bar is less than the intubation opened for pushing tow rotating plate to the horizontal range between the rotation axis of rotating plate to be applied to rotating plate
Force is to the horizontal range between the rotation axis of rotating plate.
2. a kind of thermal recovery switch according to claim 1, it is characterised in that：Thermal recovery switch also includes being connected to the outer tube
The lower contact of lower end, the lower end top of the back-moving spring has the spring of support back-moving spring in lower contact in lower contact
Circumferentially it is interval with supporting surface, lower contact and leads sand passage from what lower contact endoporus was led in spring supporting face.
3. a kind of thermal recovery switch according to claim 1, it is characterised in that：Thermal recovery switch also includes being connected to the outer tube
The lower contact component of lower end, the lower contact component includes lower contact and releasable connection the sand control guide ring in lower contact, institute
The lower end for stating back-moving spring is withstood on sand control guide ring upper surface, and the endoporus of the sand control guide ring is connected with lower contact endoporus,
Circumferentially it is interval with sand control guide ring and leads sand passage from what its endoporus was led in its upper surface.
4. a kind of thermal recovery switch according to any one of Claims 2 or 3, it is characterised in that：The sand passage of leading is skewed slot.
5. a kind of thermal recovery switch according to claim 3, it is characterised in that：The lower contact is provided with the installation sand control
The mounting hole of guide ring, the upper surface of the sand control guide ring is sunk to inside lower contact, mounting hole be located at sand control guide ring on
The inner hole surface of side and back-moving spring radial direction block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720150891.8U CN206608159U (en) | 2017-02-20 | 2017-02-20 | A kind of thermal recovery switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720150891.8U CN206608159U (en) | 2017-02-20 | 2017-02-20 | A kind of thermal recovery switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206608159U true CN206608159U (en) | 2017-11-03 |
Family
ID=60169597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720150891.8U Active CN206608159U (en) | 2017-02-20 | 2017-02-20 | A kind of thermal recovery switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206608159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267978A (en) * | 2018-09-07 | 2019-01-25 | 中国石油化工股份有限公司 | A kind of separate injection tubing string |
-
2017
- 2017-02-20 CN CN201720150891.8U patent/CN206608159U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267978A (en) * | 2018-09-07 | 2019-01-25 | 中国石油化工股份有限公司 | A kind of separate injection tubing string |
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