CN109854207A - It is a kind of to expand the automatic drainage device of formula certainly - Google Patents
It is a kind of to expand the automatic drainage device of formula certainly Download PDFInfo
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- CN109854207A CN109854207A CN201910235599.XA CN201910235599A CN109854207A CN 109854207 A CN109854207 A CN 109854207A CN 201910235599 A CN201910235599 A CN 201910235599A CN 109854207 A CN109854207 A CN 109854207A
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- central tube
- circlip
- ring
- top connection
- housing
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- 239000007788 liquid Substances 0.000 claims abstract description 66
- 238000013016 damping Methods 0.000 claims abstract description 33
- 230000000712 assembly Effects 0.000 claims abstract description 32
- 238000000429 assembly Methods 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 13
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 239000004615 ingredient Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000004090 dissolution Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010338 mechanical breakdown Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/12—Valve arrangements for boreholes or wells in wells operated by movement of casings or tubings
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to oil extraction in oil field underground field of tool, more particularly to it is a kind of from the expansion automatic drainage device of formula, including top connection, central tube, lower contact, exterior central tube, shear pin, upper housing, elastic damping ring assemblies, circlip carrier, circlip and lower housing, the central tube upper end is threadedly coupled with top connection, oil leak hole is provided on the corresponding top connection side wall of central tube side wall and the place below threaded connection place, the exterior central tube is sleeved on outside central tube and there are the ring cavities for crossing liquid between central tube, referred to as cross liquid channel, exterior central tube upper end is sleeved in top connection and blocks oil leak hole, exterior central tube is connect by shear pin with top connection, there are ring cavities outside exterior central tube and between exterior central tube for the upper coat suit.The present invention solves conventional bleeder needs and suppresses, lifts tubing string repeatedly, throws the cumbersome process such as weight, and the present invention can be achieved with automatic draining with tubing string linkage, greatly improve operating efficiency.
Description
Technical field
The invention belongs to oil extraction in oil field underground field of tool, more particularly to a kind of expansion automatic drainage device of formula certainly.
Background technique
With national emission reduction consumption reduction, the deep expansion of energy conservation and environmental protection dynamics, the performance day of domestic some petroleum drilling and mining tools
Become backward requirements of the times, wherein the bleeder in playing tubing string operation process out for draining is most representative.It is each at present
The generally existing following problems of class routine bleeder: 1. draining start-up courses are more complex, and the vehicle that needs to pressurize pressurization, dispensing weight touch
It hits, lift the operation such as tubing string repeatedly, artificially cause trouble of lost tool in hole.2. draining activation member is mostly carbon steel material, it is used in the content of wax, knot
When the oil well of dirty oil well, particularly polymer displacement of reservoir oil, easy adhesion, corrosion, fouling make slide unit act unsmooth or clamping stagnation,
Cause Ka Jing or can not draining.If can not draining, both increased the workload manually cleared out a gathering place, also site environment polluted, together
When also increase duty cycle and difficulty, increase construction cost.
Summary of the invention
To solve the problems, such as in background technique, the present invention provides a kind of from the automatic drainage device of expansion formula, draining mistake of the invention
Cheng Buxu pressurization is not required to throw weight, is not required to lift repeatedly, removes cumbersome process from, greatly improve operating efficiency, have simultaneously
Anti-flushing well function, the needs of meeting oil field backwash well operations and survey liquid.
Present invention provide the technical scheme that a kind of from expanding the automatic drainage device of formula, including top connection, central tube, under connect
Head, exterior central tube, shear pin, upper housing, elastic damping ring assemblies, circlip carrier, circlip and lower housing, the central tube upper end
It is threadedly coupled with inside top connection, is provided on the corresponding top connection side wall of central tube side wall and the place below threaded connection place
Oil leak hole, the exterior central tube is sleeved on outside central tube and there are the ring cavities for crossing liquid between central tube, referred to as
Liquid channel is crossed, exterior central tube top medial and lateral are expanding structure, and the expanding structure is sleeved in top connection and by draining
Hole blocks, and exterior central tube is connect by shear pin with top connection, the upper coat suit outside exterior central tube and with it is outer in
There are ring cavity between heart pipe, the threaded upper ends of upper housing are connected in top connection, and the bottom diameter of upper housing is less than exterior central tube
The outer diameter of expanding part is provided with liquid pass hole one on upper sleeve side wall, and exterior central tube side wall is provided with liquid pass hole two, and liquid pass hole two was incited somebody to action
Fluid apertures one is connected to liquid channel is crossed, and the circlip carrier is sleeved on exterior central tube lower part, and circlip carrier can be with respect to exterior central tube
It is axially moved, circlip is arranged in circlip carrier, and the elastic damping ring assemblies are sleeved on exterior central tube, elastic damping ring
Component between upper housing and circlip carrier, be machined on exterior central tube outer wall corresponding to elastic damping ring assemblies with it is described
Circlip engagement card slot, the lower thread of circlip carrier is connected with connector sleeve, and liquid pass hole three is provided on connector sleeve side wall, crosses liquid
Kong Yi, liquid pass hole two, liquid channel and liquid pass hole three excessively collectively constitute well-flushing passage, and the lower coat suit is outside connector sleeve
And be connected by screw to, there are ring cavity between lower housing lower part and central tube, it is machined with bulge loop on the lower outer casing inner wall in ring cavity,
It is provided with air cavity piston in ring cavity above bulge loop, sap cavity piston, air cavity piston and sap cavity are provided in the ring cavity below bulge loop
Chamber between piston is known as air chamber, and the chamber below sap cavity piston is known as hydraulic cavities, the air cavity piston thread connection
On central tube, the sap cavity Piston Machining has axial through-hole, and through-hole lower end is machined with extension diameter section, the solvable cock
It is mounted in extension diameter section, central tube lower end is connect with lower contact inner thread, and the lower end of lower housing is sleeved on lower contact outer wall, institute
Center pipe outer wall in the hydraulic cavities stated is set with interior antiscale set, and interior antiscale set is fixed in sap cavity piston, in hydraulic cavities
Outer antiscale set is fitted on lower outer casing inner wall, outer antiscale set is fixed in lower contact upper end, central tube side wall corresponding to hydraulic cavities
On be provided with inlet opening, lower housing lower end inside is threaded with solvable baffle ring, and solvable baffle ring upper surface is against in lower contact.
Stress slot is machined on the inside of the interior antiscale set, on the outside of outer antiscale set；The solvable cock at subpackage
It includes: Al-86%, Mg-9.3%, Zn-0.7%, Cu-1.7%, Fe-1.3%, Ga-0.7%, In-0.3%；The solvable gear
The ingredient of ring includes: Al-88%, Mg-5.4%, Mn-2.3%, Ni-1.1%, Fe-1.9%, Ga-0.9%, In-0.4%；Institute
Sealing ring, the air cavity piston and lower housing and central tube are respectively equipped between the top connection stated and central tube and exterior central tube
Between be respectively equipped with sealing ring, the sap cavity piston and it is lower sealing ring is respectively equipped between housing and central tube, under described
Connector and lower sealing ring is respectively equipped between housing and central tube.
The invention has the benefit that
1. the solvable baffle ring of the present apparatus reacts with casing oil liquid and dissolves within a certain period of time, lock function disappears
It loses, sap cavity piston acts on compressed air chamber in oil liquid pressure, and on the lower housing of drive, interior antiscale set, circlip, circlip carrier
Row squeezes elastic damping ring assemblies, increases elastic damping ring assemblies radial dilatation, is close to internal surface of sleeve pipe；Circlip and outer simultaneously
Card slot engagement on central tube guarantees that elastic damping ring assemblies are in compression expansion state always, and internal surface of sleeve pipe is held in realization
Continuous swelling function, realizes the auto-strengthening function of oil pipe column.
Antiscale set, the center pipe outer wall of outer antiscale set and position and lower outer casing inner wall are combined closely in 2., prevent oil
Polymer, paraffin and dirt keep piece surface smooth in each corresponding piece surface aggregation, generation in liquid；It is interior antiscale set inner wall, outer
Antiscale set outer wall is machined with stress slot, is hampered in sliding process rupturable, guarantees that sap cavity piston and the sliding of lower housing are smooth.
3. the present apparatus collectively constitutes well-flushing passage by liquid pass hole one, liquid pass hole two, liquid channel and liquid pass hole three excessively, meet anti-
Clean-out service and survey liquid level need.
4. the present apparatus concatenates decentralization with tubing string, automatic draining is above mentioned with tubing string, is not required to rotate, is not required to suppress, is not required to throw weight
Object is not required to lift repeatedly, greatly simplifies flow chart, improves operating efficiency, avoids the event of machinery caused by throwing weight
Barrier and can not environmental pollution caused by draining.
Detailed description of the invention
Original state structural schematic diagram when Fig. 1 is present invention decentralization.
Fig. 2 is the structural schematic diagram of the upward compressed air cell of sap cavity piston after solvable baffle ring dissolution in the present invention.
Fig. 3 is the structural schematic diagram of air chamber and hydraulic chamber into communication in the present invention after solvable cock dissolution.
Fig. 4 has been when tubing string operation, and upper lifting pipe post, the present apparatus is servo-actuated the schematic diagram for moving to casing collar location.
Fig. 5 is the structural schematic diagram that oil leak hole leaks out after shear pin is cut.
In figure: 1- top connection, 2- shear pin, the upper housing of 3-, 4- exterior central tube, 5- central tube, 6- elastic damping ring assemblies, 7-
Card slot, 8- circlip, 9- circlip carrier, 10- connecting tube, 11- screw, housing under 12-, 13- air cavity piston, 14- sap cavity piston,
The solvable cock of 15-, antiscale set in 16-, the outer antiscale set of 17-, 18- lower contact, the solvable baffle ring of 19-, 20- oil leak hole, 21- liquid pass hole
One, 22- liquid pass hole two, 23- cross liquid channel, 24- liquid pass hole three, 25- air chamber, 26- hydraulic cavities, 27- inlet opening, 28- casing,
29- casing coupling.
Specific embodiment
The present invention is described further below in conjunction with attached drawing:
Incorporated by reference to attached drawing 1-5, the present embodiment include top connection 1, central tube 5, lower contact 18, exterior central tube 4, shear pin 2, on
Housing 3, elastic damping ring assemblies 6, circlip carrier 9, circlip 8 and lower housing 12.The top connection 1 is connected with tubing string lower end
It connects, 5 upper end of central tube is connect with 1 inside thread of top connection, 5 side wall of central tube and the place below threaded connection place
Be provided with oil leak hole 20 on corresponding 1 side wall of top connection, communicated inside oil leak hole 20 and central tube 5, the inside of central tube 5 again with this dress
It sets and is communicated inside the tubing string of top, so oil leak hole 20 can release the oil liquid in tubing string.The exterior central tube 4 is set with
In the outside of central tube 5 and there are the ring cavities for crossing liquid between central tube 5, referred to as liquid channel 23,4 top of exterior central tube
Medial and lateral are expanding structure, and the expanding structure of exterior central tube 4 is sleeved in top connection 1 and blocks oil leak hole 20.In outer
Heart pipe 4 is connect by shear pin 2 with top connection 1, only after shear pin 2 is cut, when exterior central tube 4 is with respect to 1 downlink of top connection,
The closure of oil leak hole 20 can be just released from.The upper housing 3 is sleeved on 4 outside of exterior central tube and stays between exterior central tube 4
There is ring cavity, the threaded upper ends of upper housing 3 are connected in top connection 1, and the bottom diameter of upper housing 3 is less than 4 wide diameter portion of exterior central tube
The outer diameter divided, the lower end surface of upper housing 3 can block the expanding part of exterior central tube 4, limit to its downlink, prevent shear pin
After 2 cut, the parts such as exterior central tube 4, elastic damping ring assemblies 6, circlip carrier 9 fall into underground；Upper housing 3 and exterior central tube 4
Between ring cavity effect first is that make liquid pass hole 1 and liquid pass hole 2 22 no matter whether hole location be aligned to be connected, ring cavity
Second effect be when shear pin 2 is cut after, when 4 downlink of exterior central tube leaks out oil leak hole 20, oil leak hole 20 and liquid pass hole one
It is connected between 21, and then releases the oil in tubing string.
Liquid pass hole 1 is provided on upper 3 side wall of housing, 4 side wall of exterior central tube is provided with liquid pass hole 2 22, and liquid pass hole 2 22 will
Liquid pass hole 1 is connected to liquid channel 23 is crossed, and the circlip carrier 9 is sleeved on 4 lower part of exterior central tube, and circlip carrier 9 can be opposite
Exterior central tube 4 is axially moved, and circlip 8 is arranged in circlip carrier 9, and the elastic damping ring assemblies 6 are sleeved on exterior central tube 4
On, elastic damping ring assemblies 6 are between upper housing 3 and circlip carrier 9, because upper housing 3 is threaded in top connection 1,
It is retaining element, so radial direction has occurred in elastic damping ring assemblies 6 when the 9 uplink elasticity of compression of circlip carrier damps ring assemblies 6
Dilatancy.The elastic materials such as polyurethane, oil resistant rubber, oil resistant rubber and plastic can be used in elastic damping ring assemblies 6, can single or multiple groups
Tandem compound uses, it is also possible to which the packing element of same performance specification substitutes.Elastic damping ring assemblies 6 have automatic rebounding special
Property and compressive characteristics, when upper lifting pipe post, are not easy Ka Jing.It is processed on 4 outer wall of exterior central tube corresponding to elastic damping ring assemblies 6
There is the card slot 7 engaged with the circlip 8, circlip carrier 9 is to the pressure axial force of elastic damping ring assemblies 6, elastic damping ring group
Part 6 is compressed, and card slot 7 gradually leaks out, and the circlip 8 in circlip carrier 9 is engaged with card slot 7, circlip 8 on card slot 7 only on not under,
And then the expansion of elastic damping ring assemblies 6 is locked.
The lower thread of circlip carrier 9 is connected with connector sleeve 10, and connector sleeve 10 is used to connection circlip carrier 9 and lower housing
12, liquid pass hole 3 24 is provided on 10 side wall of connector sleeve, liquid pass hole 1, crosses liquid channel 23 and liquid pass hole 3 24 at liquid pass hole 2 22
Well-flushing passage is collectively constituted, after elastic damping ring assemblies 6 are expanded into maximum, has blocked oil jacket ring cavity, well-flushing passage is deposited
Guarantee that 28 inner fluid of casing passes through the channel and realizes circulation up and down on the one hand, another facilitate meets anti-flushing well and survey liquid level operation
It needs.The lower housing 12 is sleeved on the outside of connector sleeve 10 and is connected by screw 11, lower 12 lower part of housing and central tube 5 it
Between there are ring cavity, be machined with bulge loop on 12 inner wall of lower housing in ring cavity, air cavity piston 13 be provided in the ring cavity above bulge loop,
Sap cavity piston 14 is provided in ring cavity below bulge loop, the chamber between air cavity piston 13 and sap cavity piston 14 is known as air chamber
25, the chamber of 14 lower section of sap cavity piston is known as hydraulic cavities 26, and the air cavity piston 13 is threaded on central tube 5, is guaranteed
One end of air chamber 25 be it is fixed, can only be gone from the other end of air chamber 25 balance pressure difference.The sap cavity piston 14
It is machined with axial through-hole, through-hole can be connected to air chamber 25 and hydraulic cavities 26, and through-hole lower end is machined with extension diameter section, and described can
Molten cock 15 is mounted in extension diameter section, and the diameter of solvable cock 15 is greater than the diameter of through-hole, solvable cock 15 can with enter liquid
Oil liquid in pressure chamber 26 reacts and finally dissolves, and the effect of through-hole is limited to solvable cock 15, and hydraulic direct is avoided
It connects and solvable cock 15 is pressed into air chamber 25.
5 lower end of central tube is connect with 18 internal whorl of lower contact, and the lower end of lower housing 12 is sleeved on outside lower contact 18, institute
26 inner central tube of hydraulic cavities, 5 outer wall stated is set with interior antiscale set 16, and the interior antiscale set 16 is fixed under sap cavity piston 14
End, interior antiscale set 16 are combined closely with central tube 5 and opposite can be slided, and prevent polymer in oil liquid, paraffin and dirt at center
The aggregation of 5 outer surface of pipe generates, and keeps 5 smooth outer surface of central tube, and the reduction sliding of sap cavity piston 14, which has some setbacks, is stuck in central tube 5
On probability, reduce the generation of mechanical breakdown.
Outer antiscale set 17 is fitted in hydraulic cavities 26 on lower 12 inner wall of housing, the outer antiscale set 17 is fixed in lower contact
18 upper ends, outer antiscale set 17 and lower 12 tight structure of housing opposite can simultaneously slide, and prevent polymer in oil liquid, paraffin and dirt from existing
Lower 12 inner surface of housing aggregation generates, and keeps lower 12 inner surface of housing smooth, and the lower sliding of housing 12 of reduction has some setbacks and lower contact
18 occur the probability of blocking.
Interior antiscale covers 16 inner surfaces, outer antiscale covers 17 outer surfaces and is machined with stress slot, encounters in sliding process softer
Wax dirt etc. can effectively remove, stress slot is rupturable when encountering harder wax dirt, guarantees that sap cavity piston 14 and lower housing 12 are sliding
It moves smooth.
Be provided with inlet opening 27 on 5 side wall of central tube corresponding to hydraulic cavities 26, inlet opening 27 be connected to 5 inner cavity of central tube with
Hydraulic cavities 26, lower 12 lower end inside of housing are threaded with solvable baffle ring 19, and solvable 19 upper surface of baffle ring is against in lower contact 18,
Solvable baffle ring 19 limits the uplink of lower housing 12, and the tensile strength that solvable 19 strength character of baffle ring can satisfy all well depths is wanted
It asks, as a dispensing device, material uses soluble metal, avoids because different dispensing device institutes band is arranged in different well depths
The hidden danger and uncertainty come.
It is respectively equipped with sealing ring between the top connection 1 and central tube 5 and exterior central tube 4, prevents from appointing at oil leak hole 20
Meaning oil leak.
Sealing ring, the sap cavity piston are respectively equipped between the air cavity piston 13 and lower housing 12 and central tube 5
Sealing ring is respectively equipped between 14 and lower housing 12 and central tube 5, sealing ring makes air chamber 25 form a seal chamber at two, prevents
Only oil liquid penetrates into air chamber 25, causes the reduction of about 14 two chambers pressure difference of sap cavity piston.
It is respectively equipped with sealing ring between the lower contact 18 and lower housing 12 and central tube 5, ensure that hydraulic cavities 26 not
Pressure release ensure that hydraulic identical in the hydraulic and central tube 5 of hydraulic cavities 26.
The working principle and work step of the present embodiment are:
1. top connection 1 is connected with tubing string lower end in the present apparatus, lower contact 1 is connect with oil pump sleeve upper end, this dress
It sets and transfers to oil well set depth in company with tubing string.Device is submerged under 28 liquid level of casing at this time, and oil pipe inner fluid passes through inlet opening
27 enter hydraulic cavities 26 makes device keep original configuration as shown in Figure 1 due to the lock function of solvable baffle ring 19.
2. as shown in Fig. 2, the solvable baffle ring 19 in device reacts with 28 oil liquid of casing and dissolves within a certain period of time,
Its lock function disappears, and air chamber 25 makes 14 two sides of sap cavity piston because oil liquid pressure generates pressure difference, pushes 14 uplink of sap cavity piston,
Compressed air cell 25, and lower housing 12, interior antiscale is driven to cover 16, circlip 8,9 uplink of circlip carrier, squeeze elastic damping ring assemblies
6, increase 6 radial dilatation of elastic damping ring assemblies, is close to 28 inner wall of casing；Card slot 7 on circlip 8 and exterior central tube 4 simultaneously
Engagement guarantees that elastic damping ring assemblies 6 are in compression expansion state always, realizes the lasting swelling function to 28 inner wall of casing,
And play centralizing function to oil pipe column.
3. as shown in figure 3, solvable cock 15 is dissolved, and air chamber 25 is connected to hydraulic cavities 26, in device by certain time
External pressure reaches balance.By adjusting the formula of 15 alloy of solvable baffle ring 19 and solvable cock, make solvable 15 dissolution time of cock
It is longer than the dissolution time of solvable baffle ring 19, guarantees only after solvable baffle ring 19 is completely dissolved, solvable cock 15 just starts to dissolve,
Guarantee that elastic damping ring assemblies 6 are expanded sufficiently.By testing repeatedly, obtained 19 alloy of solvable cock 15 and solvable baffle ring at
Divide as follows:
In solvable cock 15: Al-86%, Mg-9.3%, Zn-0.7%, Cu-1.7%, Fe-1.3%, Ga-0.7%, In-
0.3%；
In solvable baffle ring 19: Al-88%, Mg-5.4%, Mn-2.3%, Ni-1.1%, Fe-1.9%, Ga-0.9%, In-
0.4%；
4. as shown in figure 4, upper lifting pipe post, the present apparatus is servo-actuated and moves to 29 position of casing coupling when acting tubing string operation；Bullet
Property damping ring assemblies 6 be tightly stuck at this, generate reaction thrust, push down on circlip carrier 9, thrust passes through circlip 8 and outer
7 engagement of card slot on central tube 4, pulls downward on exterior central tube 4.
5. as shown in figure 5, shear pin 2 is cut when the pulling force suffered by the exterior central tube 4 is greater than the intensity of shear pin 2, it is outer at this time in
Heart pipe 4 releases elastic damping together with circlip carrier 9, circlip 8, sap cavity piston 14, interior antiscale set 16 and lower housing 12 downlink together
6 pressured state of ring assemblies, elastic damping ring assemblies 6 are axially extending, radial contraction；That exposes that top connection 1 blocked simultaneously lets out
Oilhole 20, the oil liquid in oil pipe are automatically discharged into casing 28 by oil leak hole 20, liquid pass hole 1, realize the automatic of the present apparatus
Oil draining function.Elastic damping ring assemblies 6 reset completely, and device by proposing oil well in company with tubing string at casing coupling 29 together.
The present apparatus turns on the power the head of liquid in oil pipe, while next lift pipe string operation, that is, automatically turns on and lets out
Oily function does not need to increase the operating process such as additional hydraulic, lifting.Solve conventional bleeder need pressurize, launch weight,
Many and diverse operational issue such as handling repeatedly, greatly improves operating efficiency.
Claims (4)
1. a kind of from expanding the automatic drainage device of formula, it is characterised in that: including top connection (1), central tube (5), lower contact (18), outer
Central tube (4), shear pin (2), upper housing (3), elastic damping ring assemblies (6), circlip carrier (9), circlip (8) and lower housing
(12), the central tube (5) upper end is connect with top connection (1) inside thread, central tube (5) side wall below threaded connection place
And be provided with oil leak hole (20) on the place corresponding top connection (1) side wall, the exterior central tube (4) is sleeved on central tube (5)
It is external and there are the ring cavities for crossing liquid between central tube (5), referred to as liquid channel (23), in exterior central tube (4) top,
Outside is expanding structure, and the expanding structure is sleeved on top connection (1) and blocks oil leak hole (20), exterior central tube
(4) connect with top connection (1) by shear pin (2), the upper housing (3) be sleeved on outside exterior central tube (4) and with outer center
It manages between (4) there are ring cavity, the threaded upper ends of upper housing (3) are connected on top connection (1), and the bottom diameter of upper housing (3) is small
Outer diameter in exterior central tube (4) expanding part is provided with liquid pass hole one (21) on upper housing (3) side wall, and exterior central tube (4) side wall is opened
There is liquid pass hole two (22), liquid pass hole one (21) is connected to by liquid pass hole two (22) with liquid channel (23) are crossed, the circlip carrier (9)
It is sleeved on exterior central tube (4) lower part, circlip carrier (9) can be axially moved with respect to exterior central tube (4), and circlip (8) is arranged in circlip
In carrier (9), the elastic damping ring assemblies (6) are sleeved on exterior central tube (4), and elastic damping ring assemblies (6) are located at upper
Between housing (3) and circlip carrier (9), it is machined on exterior central tube (4) outer wall corresponding to elastic damping ring assemblies (6) and institute
The card slot (7) for circlip (8) engagement stated, the lower thread of circlip carrier (9) are connected with connector sleeve (10), connector sleeve (10) side wall
On be provided with liquid pass hole three (24), liquid pass hole one (21), crosses liquid channel (23) and common group of liquid pass hole three (24) at liquid pass hole two (22)
At well-flushing passage, the lower housing (12) is sleeved on connector sleeve (10) outside and is connected by screw (11), lower housing (12)
There are ring cavity between lower part and central tube (5), bulge loop, the ring cavity above bulge loop are machined on lower housing (12) inner wall in ring cavity
It is inside provided with air cavity piston (13), is provided in the ring cavity below bulge loop sap cavity piston (14), air cavity piston (13) and sap cavity are living
Chamber between plug (14) is known as air chamber (25), and the chamber below sap cavity piston (14) is known as hydraulic cavities (26), the gas
Chamber piston (13) is threaded on central tube (5), and the sap cavity piston (14) is machined with axial through-hole, and through-hole lower end adds
Work has extension diameter section, and the solvable cock (15) is mounted in extension diameter section, central tube (5) lower end and lower contact (18) inner thread
Connection, the lower end of lower housing (12) is sleeved on lower contact (18) outer wall, central tube (5) outer wall set in the hydraulic cavities (26)
Equipped with interior antiscale set (16), interior antiscale set (16) is fixed in sap cavity piston (14) lower end, the lower housing (12) in hydraulic cavities (26)
It is fitted with outer antiscale set (17) on inner wall, outer antiscale set (17) is fixed in lower contact (18) upper end, corresponding to hydraulic cavities (26)
It is provided with inlet opening (27) on central tube (5) side wall, lower housing (12) lower end inside is threaded with solvable baffle ring (19), solvable gear
Ring (19) upper surface is against on lower contact (18).
2. according to claim 1 a kind of from the expansion automatic drainage device of formula, it is characterised in that: the interior antiscale set (16)
Stress slot is machined on the outside of inside, outer antiscale set (17).
3. according to claim 1 a kind of from the expansion automatic drainage device of formula, it is characterised in that: the solvable cock (15)
Ingredient include: Al-86%, Mg-9.3%, Zn-0.7%, Cu-1.7%, Fe-1.3%, Ga-0.7%, In-0.3%；It is described
The ingredient of solvable baffle ring (19) include: Al-88%, Mg-5.4%, Mn-2.3%, Ni-1.1%, Fe-1.9%, Ga-
0.9%, In-0.4%.
4. according to claim 1 a kind of from expanding the automatic drainage device of formula, it is characterised in that: the top connection (1) with
Sealing ring, the air cavity piston (13) and lower housing (12) and center are respectively equipped between central tube (5) and exterior central tube (4)
It is respectively equipped with sealing ring between pipe (5), is respectively equipped between the sap cavity piston (14) and lower housing (12) and central tube (5)
Sealing ring is respectively equipped with sealing ring between the lower contact (18) and lower housing (12) and central tube (5).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910235599.XA CN109854207A (en) | 2019-03-27 | 2019-03-27 | It is a kind of to expand the automatic drainage device of formula certainly |
| CN201910551900.8A CN110173234B (en) | 2019-03-27 | 2019-06-25 | Self-expanding automatic oil drainage device |
| CN201920957128.5U CN210460586U (en) | 2019-03-27 | 2019-06-25 | Self-expanding automatic oil drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910235599.XA CN109854207A (en) | 2019-03-27 | 2019-03-27 | It is a kind of to expand the automatic drainage device of formula certainly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109854207A true CN109854207A (en) | 2019-06-07 |
Family
ID=66902046
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910235599.XA Pending CN109854207A (en) | 2019-03-27 | 2019-03-27 | It is a kind of to expand the automatic drainage device of formula certainly |
| CN201920957128.5U Active CN210460586U (en) | 2019-03-27 | 2019-06-25 | Self-expanding automatic oil drainage device |
| CN201910551900.8A Active CN110173234B (en) | 2019-03-27 | 2019-06-25 | Self-expanding automatic oil drainage device |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920957128.5U Active CN210460586U (en) | 2019-03-27 | 2019-06-25 | Self-expanding automatic oil drainage device |
| CN201910551900.8A Active CN110173234B (en) | 2019-03-27 | 2019-06-25 | Self-expanding automatic oil drainage device |
Country Status (1)
| Country | Link |
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| CN (3) | CN109854207A (en) |
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| CN110173234A (en) * | 2019-03-27 | 2019-08-27 | 大庆吉庆雨科技开发有限公司 | It is a kind of to expand the automatic drainage device of formula certainly |
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| CN2571996Y (en) * | 2002-09-17 | 2003-09-10 | 中国石化胜利油田有限公司孤东采油厂 | Downhole switch |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110173234A (en) | 2019-08-27 |
| CN210460586U (en) | 2020-05-05 |
| CN110173234B (en) | 2024-04-19 |
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Application publication date: 20190607 |