CN112832713B - Oil well down-hole non-wax deposition device - Google Patents
Oil well down-hole non-wax deposition device Download PDFInfo
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- CN112832713B CN112832713B CN202110006815.0A CN202110006815A CN112832713B CN 112832713 B CN112832713 B CN 112832713B CN 202110006815 A CN202110006815 A CN 202110006815A CN 112832713 B CN112832713 B CN 112832713B
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- sliding sleeve
- cable
- middle sliding
- sleeve
- sucker rod
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- 239000003129 oil well Substances 0.000 title claims abstract description 10
- 230000008021 deposition Effects 0.000 title claims description 9
- 238000007789 sealing Methods 0.000 claims description 25
- 210000000078 claw Anatomy 0.000 claims description 21
- 238000004146 energy storage Methods 0.000 claims description 15
- 239000004519 grease Substances 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 239000010779 crude oil Substances 0.000 abstract description 17
- 239000003921 oil Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 10
- 230000015271 coagulation Effects 0.000 abstract description 4
- 238000005345 coagulation Methods 0.000 abstract description 4
- 238000005485 electric heating Methods 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 230000002500 effect on skin Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
-
- 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
- E21B17/003—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Cable Accessories (AREA)
Abstract
The invention belongs to the field of oil field oil extraction auxiliary equipment, and particularly relates to an oil well underground wax deposition-free device. The device comprises a high-frequency alternating current power supply, a cable, a hollow sucker rod and a terminal device, wherein the terminal device is fixedly connected to the lower end of the hollow sucker rod, one end of the cable is connected to the high-frequency alternating current power supply, and the other end of the cable is inserted from the upper end of the hollow sucker rod and then is butted with the terminal device; the lower end of the cable is fixedly connected with a binding post. The invention utilizes the heat energy generated by electric heating to heat the crude oil in the oil pipe in the whole process so as to reduce the viscosity of the crude oil, prevent wax precipitation in the oil pipe and improve the fluidity of the crude oil. Can effectively solve various technical problems encountered in the process of extracting the crude oil with high coagulation, high viscosity and high wax content, and achieves the purposes of increasing the yield and the efficiency of an oil well.
Description
Technical Field
The invention belongs to the field of oil field oil extraction auxiliary equipment, and particularly relates to an oil well underground wax deposition-free device.
Background
In oil field production, various technical problems are encountered in the process of extracting crude oil with high coagulation, high viscosity and high wax content, such as: the wax deposition is serious in the pit, the sucker rod is overloaded, the descending is difficult, the outlet temperature of crude oil is low, and the like. Currently, technicians often use steam injection into the tubing to heat the tubing, which reduces the viscosity of the crude oil and reduces wax deposition. However, the construction process is complex in this way, and the effect is still to be improved.
Disclosure of Invention
The invention provides an oil well downhole non-wax deposition device, which aims to solve the problems in the background technology.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a device for preventing wax deposition under an oil well comprises a high-frequency alternating current power supply, a cable, a hollow sucker rod and a terminal device, wherein the terminal device is fixedly connected to the lower end of the hollow sucker rod;
the lower end of the cable is fixedly connected with a binding post;
the terminal device comprises an outer barrel, a middle sliding sleeve, an inner sliding sleeve, a fixing sleeve and a lower joint, wherein the fixing sleeve is fixedly arranged on the inner side of the outer barrel through threads, the middle sliding sleeve is slidably arranged in the outer barrel, the lower end of the middle sliding sleeve is slidably inserted into the inner side of the fixing sleeve, the upper end of the middle sliding sleeve is limited through the hollow sucker rod, the lower end of the middle sliding sleeve is limited through the fixing sleeve, the inner sliding sleeve is slidably arranged on the inner side of the middle sliding sleeve, an elastic claw for clamping a binding post is processed at the upper end of the inner sliding sleeve, the outer side of the elastic claw is in sliding fit with the inner side of the middle sliding sleeve through a conical surface, an inclined hole is formed in the middle of the inner sliding sleeve, a locking ball and a spring A for supporting the locking ball are installed in the inclined hole, the locking ball keeps a movement trend close to the center of the inner sliding sleeve, the lower end of the inner sliding sleeve is limited by a shoulder machined on the inner side of the middle sliding sleeve;
a balance hole is formed in the side wall of the fixed sleeve, a sealing ring is arranged on the cylindrical matching surface between the fixed sleeve and the outer cylinder, and the sealing ring is positioned above the balance hole;
an upper sealing ring and a lower sealing ring are arranged on a cylindrical matching surface between the middle sliding sleeve and the fixed sleeve, and the two sealing rings are respectively positioned above and below the balance hole;
a sealing ring is arranged on a sliding matching surface between the middle sliding sleeve and the inner sliding sleeve;
the lower end of the middle sliding sleeve is open, and the lower end of the fixed sleeve is blocked;
a sealing cavity called as an energy storage cavity is arranged below the fixed sleeve;
the lower joint is fixedly connected to the lower end of the outer barrel through threads.
According to a further technical scheme, silicone grease is filled in the energy storage cavity, a piston is arranged below the energy storage cavity, a spring B is arranged between the lower portion of the piston and the lower joint, and the piston always keeps a moving trend of approaching the fixed sleeve under the elastic force of the spring B.
As a further technical scheme, a spring C is clamped between the upper end of the middle sliding sleeve and the lower end face of the hollow sucker rod, and the middle sliding sleeve always keeps a moving trend close to the fixed sleeve under the action of the spring C.
The invention has the beneficial effects that:
1. the invention utilizes the heat energy generated by electric heating to heat the crude oil in the oil pipe in the whole process so as to reduce the viscosity of the crude oil, prevent wax precipitation in the oil pipe and improve the fluidity of the crude oil. Can effectively solve various technical problems encountered in the process of extracting the crude oil with high coagulation, high viscosity and high wax content, and achieves the purposes of increasing the yield and the efficiency of an oil well.
2. The invention skillfully utilizes the skin effect of current, when in use, the cable is put in from the well head, passes through the hollow sucker rod to the well bottom, and is butted with the terminal device at the well bottom. When the high-frequency alternating current passes through the cable and the hollow sucker rod to form a loop, when the high-frequency alternating current passes through the wall of the hollow sucker rod through the cable, the current does not uniformly flow along the side wall of the hollow sucker rod but is concentrated on the inner surface layer of the hollow sucker rod to pass through under the action of electromagnetic induction, skin effect and proximity effect, the current generates heat under the action of the impedance of the side wall of the hollow sucker rod, the temperature of crude oil in an oil pipe is raised through conduction, the voltage and the current on the outer surface of the hollow sucker rod are zero, and an insulating structure is formed by the high-frequency alternating current, so that liquid is safely and reliably conveyed in.
3. The invention designs the terminator with a unique structure, which not only can ensure smaller contact resistance, but also can ensure the connection strength of the cable and the terminator. During the connection, go into the cable down along hollow sucker rod, insert the blind hole depths of inner sliding sleeve central authorities until the terminal of cable lower extreme, then lift the cable gently and make terminal rebound, when the locked groove on the terminal with the lock ball position on the inner sliding sleeve relative time, the lock ball card is in the locked groove, at this moment, the inner sliding sleeve begins to remove along with the terminal together, meanwhile, upwards slides under the drive of middle sliding sleeve including also. After the balance hole, high-pressure air in the energy storage cavity reaches the lower part of the middle sliding sleeve and the inner sliding sleeve through the balance hole, then the middle sliding sleeve and the inner sliding sleeve are pushed to slide upwards, the middle sliding sleeve stops sliding after sliding to an upper limit position in the sliding process, the inner sliding sleeve continues to slide upwards, the elastic claw at the upper end of the inner sliding sleeve inwards draws in and clamps the binding post under the guiding action of the conical surface, and therefore the connection strength of the cable and the terminal is effectively guaranteed.
In addition, in the termination, two total fixed points between terminal and the internal sliding sleeve, firstly the lock ball, secondly the elastic claw, the benefit lies in: on one hand, the two fixing points can effectively improve the connection strength between the cable and the terminal; on the other hand, two fixed points work cooperatively, and before the elastic claw is clamped, the terminal post is limited in axial displacement by the locking ball, so that the sawteeth in the elastic claw can only be wedged in the radial direction of the terminal post and cannot slide in the axial direction of the terminal post, the contact area between the terminal post and the elastic claw is maximized, and the contact resistance is further reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the internal structure of the terminator;
fig. 3 is a schematic structural diagram of another embodiment of the terminator.
In the figure: 1. the high-frequency alternating current power supply comprises a high-frequency alternating current power supply, 2, cables, 3, a hollow sucker rod, 4, a terminal device, 5, an outer cylinder, 6, a middle sliding sleeve, 7, an inner sliding sleeve, 8, a fixing sleeve, 9, a lower connector, 10, an energy storage cavity, 11, a sealing ring, 12, a balance hole, 13, springs A and 14, springs B and 15, springs C and 16, a piston, 17, an elastic claw, 18, a locking ball, 19, a locking groove, 20, a wiring terminal, 21 and silicone grease.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the first embodiment is as follows:
as shown in fig. 1 and 2, the present invention comprises a high frequency ac power supply 1, a cable 2, a hollow sucker rod 3 and a terminal 4, wherein the terminal 4 is fixedly connected to the lower end of the hollow sucker rod 3, one end of the cable 2 is connected to the high frequency ac power supply 1, and the other end of the cable is inserted from the upper end of the hollow sucker rod 3 and then is butted with the terminal 4. The invention utilizes the heat energy generated by electric heating to heat the crude oil in the oil pipe in the whole process so as to reduce the viscosity of the crude oil, prevent wax precipitation in the oil pipe and improve the fluidity of the crude oil. Can effectively solve various technical problems encountered in the process of extracting the crude oil with high coagulation, high viscosity and high wax content, and achieves the purposes of increasing the yield and the efficiency of an oil well. In principle, the invention skillfully utilizes the skin effect of current, when in use, the cable 2 is put in from the well head, the cable 2 passes through the hollow sucker rod 3 to the well bottom, and is butted with the terminal device 4 at the well bottom. When the high-frequency alternating current transmission device works, the high-frequency alternating current passes through the cable 2 and the hollow sucker rod 3 to form a loop, when the high-frequency alternating current passes through the pipe wall of the hollow sucker rod 3 through the cable 2, the current does not uniformly flow along the side wall of the hollow sucker rod 3 under the action of electromagnetic induction, skin effect and proximity effect, but is concentrated on the inner surface layer of the hollow sucker rod 3 to pass through, and the current generates heat under the action of impedance of the side wall of the hollow sucker rod 3, so that the temperature of crude oil in an oil pipe is increased through conduction, and the voltage and the current on the outer surface of the hollow sucker rod 3 are zero, thereby forming an insulating structure by self.
The terminator 4 comprises an outer barrel 5, a middle sliding sleeve 6, an inner sliding sleeve 7, a fixing sleeve 8 and a lower connector 9, wherein the fixing sleeve 8 is fixedly installed in the inner side of the outer barrel 5 through threads, the middle sliding sleeve 6 is slidably installed in the outer barrel 5, the lower end of the middle sliding sleeve 6 is slidably inserted into the inner side of the fixing sleeve 8, the upper end of the middle sliding sleeve 6 is limited by the hollow sucker rod 3, the lower end of the middle sliding sleeve 6 is limited by the fixing sleeve 8, the inner sliding sleeve 7 is slidably installed in the inner side of the middle sliding sleeve 6, an elastic claw 17 used for clamping the binding post 20 is processed at the upper end of the inner sliding sleeve 7, the outer side of the elastic claw 17 is in sliding fit with the inner side of the middle sliding sleeve 6 through a conical surface, the middle of the inner sliding sleeve 7 is provided with an inclined hole, a locking ball 18 and a spring A13 used for supporting the locking ball 18 are installed in the inclined hole, the locking, a locking groove 19 matched with the locking ball 18 is processed on the outer side of the binding post 20, and the lower end of the inner sliding sleeve 7 is limited by a shoulder processed on the inner side of the middle sliding sleeve 6; a balance hole 12 is formed in the side wall of the fixed sleeve 8, a sealing ring 11 is arranged on the cylindrical matching surface between the fixed sleeve 8 and the outer cylinder 5, and the sealing ring 11 is positioned above the balance hole 12; an upper sealing ring 11 and a lower sealing ring 11 are arranged on a cylindrical matching surface between the middle sliding sleeve 6 and the fixed sleeve 8, and the two sealing rings 11 are respectively positioned above and below the balance hole 12; a sealing ring 11 is arranged on a sliding matching surface between the middle sliding sleeve 6 and the inner sliding sleeve 7; the lower end of the middle sliding sleeve 6 is open, and the lower end of the fixed sleeve 8 is blocked; a sealing cavity called as an energy storage cavity 10 is arranged below the fixed sleeve 8; the lower joint 9 is fixedly connected to the lower end of the outer cylinder 5 through threads.
The invention designs the terminal device 4 with a unique structure, which not only can ensure smaller contact resistance, but also can ensure the connection strength of the cable 2 and the terminal device 4. During the connection, go into cable 2 down along hollow sucker rod 3, until the terminal 20 of cable 2 lower extreme inserts the blind hole depths at inner sliding sleeve 7 central authorities, then lift cable 2 gently and make terminal 20 rebound, when the locked groove 19 on terminal 20 and the locking ball 18 position on inner sliding sleeve 7 are relative, locking ball 18 card is in the locked groove 19, and at this moment, inner sliding sleeve 7 begins to remove along with terminal 20 together, and meanwhile, middle sliding sleeve 6 also upwards slides under inner sliding sleeve 7's the drive. Two sealing washer 11 in the middle sliding sleeve 6 outside all cross behind balance hole 12, the highly-compressed air in the energy storage chamber 10 reachs the below of middle sliding sleeve 6 and inner sliding sleeve 7 through balance hole 12, promotes middle sliding sleeve 6 and inner sliding sleeve 7 and upwards slides then, and the slip in-process, middle sliding sleeve 6 stops the slip after sliding to the extreme position, and inner sliding sleeve 7 continues upwards to slide, and the elastic claw 17 of inner sliding sleeve 7 upper end is in inwards draw in and will under the guiding action of conical surface terminal 20 is cliied to the joint strength of cable 2 and terminal 4 has effectively been guaranteed.
In addition, in the terminal 4, two fixing points are shared between the terminal 20 and the inner sliding sleeve 7, namely the locking ball 18 and the elastic claw 17, and the advantages are that: on one hand, the two fixing points can effectively improve the connection strength between the cable 2 and the terminal 4; on the other hand, the two fixing points work cooperatively, and before the elastic claw 17 is clamped, the terminal 20 is limited in axial displacement by the locking ball 18, so that the sawteeth in the elastic claw 17 can only be wedged in the radial direction of the terminal 20 and can not slide in the axial direction of the terminal 20, thereby maximizing the contact area between the terminal 20 and the elastic claw 17 and further reducing the contact resistance.
As a further technical solution, a piston 16 is arranged below the energy storage chamber 10, a spring B14 is arranged between the lower part of the piston 16 and the lower joint 9, and the piston 16 always keeps a moving trend of approaching the fixed sleeve 8 under the elastic force of the spring B14.
As a further technical scheme, a spring C15 is clamped between the upper end of the middle sliding sleeve 6 and the lower end face of the hollow sucker rod 3, and the middle sliding sleeve 6 always keeps a moving trend of approaching the fixed sleeve 8 under the action of the spring C15.
In practice, the parameters of each part are as follows:
1. main technical parameters of high frequency ac power supply 1
The heating depth is 0-2500 m (selected);
rated power is 0-75 kw (matching);
the power supply voltage is 380V plus or minus 10 percent 50Hz of three-phase four-wire;
the output voltage is adjustable in single phase of 100-1800V and 200-2000 Hz;
the power factor is more than or equal to 0.95;
the control mode is 1 dragging N intelligent automatic control;
the protection function comprises phase loss, overload, overcurrent, overheat, short circuit and voltage abnormity;
2. main technical parameters of hollow sucker rod
The outer diameter of the rod body is 36 mm;
the outer diameter of the coupling is 49 mm;
the length is 8000 mm;
the material is 35 Grmo;
750 and 860mpd tensile strength;
the yield strength is more than or equal to 620 mpd;
the hardness is HB 220-250;
3. main technical parameters of cable
The maximum outer diameter is 17 mm;
the temperature resistant grade is less than or equal to 3000 c;
rated power is more than or equal to 100W/m;
the tensile strength is more than or equal to 2.5T;
the insulating strength is more than or equal to 8000V;
the insulation resistance is more than or equal to 2500M 32;
the service life is more than or equal to 10 years.
Example two:
the difference between the present embodiment and the first embodiment lies in the structure of the energy storage chamber 10, in the present embodiment, the energy storage chamber 10 is filled with high-pressure air and silicone grease 21, and a piston 16 and a spring B14 for supporting the piston 16 are arranged below the energy storage chamber 10. In practical production, the difficulty of sealing gas is high, and the requirements on the processing precision of parts and the performance of sealing materials are high. In the embodiment, even if the air in the energy storage cavity 10 leaks after being installed in the well for a period of time, the piston 16 can still push the silicone grease 21 to flow, and the high viscosity of the silicone grease 21 can greatly improve the sealing reliability of the sealing ring 11, so that the elastic claw 17 is ensured not to loosen.
When in implementation, the elastic claw 17 can be clamped at the inner side of the middle sliding sleeve 6 in a mode of reducing the taper of the outer side of the elastic claw 17, and the elastic claw 17 cannot be loosened.
Claims (3)
1. The utility model provides an oil well does not wax deposition device in pit which characterized in that: the device comprises a high-frequency alternating current power supply (1), a cable (2), a hollow sucker rod (3) and a terminal device (4), wherein the terminal device (4) is fixedly connected to the lower end of the hollow sucker rod (3), one end of the cable (2) is connected to the high-frequency alternating current power supply (1), and the other end of the cable is inserted from the upper end of the hollow sucker rod (3) and then is butted with the terminal device (4);
the lower end of the cable (2) is fixedly connected with a binding post (20);
terminal device (4), including urceolus (5), middle sliding sleeve (6), inner sliding sleeve (7), fixed cover (8) and lower clutch (9), wherein, fixed cover (8) are installed in the inboard of urceolus (5) through screw thread fixed mounting, and middle sliding sleeve (6) slidable mounting is in urceolus (5), and the lower extreme of middle sliding sleeve (6) slides the cartridge and is in the inboard of fixed cover (8), the upper end of middle sliding sleeve (6) is passed through hollow sucker rod (3) is spacing, and the lower extreme of middle sliding sleeve (6) is passed through fixed cover (8) is spacing, inner sliding sleeve (7) slidable mounting is in the inboard of middle sliding sleeve (6), and the upper end processing of inner sliding sleeve (7) has and is used for pressing from both sides the elastic claw (17) of terminal (20), the outside of elastic claw (17) with the inboard of middle sliding sleeve (6) is through conical surface sliding fit, and the middle part of inner sliding sleeve (, a lock ball (18) and a spring A (13) for supporting the lock ball (18) are arranged in the inclined hole, the lock ball (18) always keeps a movement trend of approaching to the center of the inner sliding sleeve (7) under the elastic force action of the spring A (13), a lock groove (19) matched with the lock ball (18) is processed on the outer side of the binding post (20), and the lower end of the inner sliding sleeve (7) is limited by a shoulder processed on the inner side of the middle sliding sleeve (6);
a balance hole (12) is formed in the side wall of the fixed sleeve (8), a sealing ring (11) is arranged on a cylindrical matching surface between the fixed sleeve (8) and the outer cylinder (5), and the sealing ring (11) is positioned above the balance hole (12);
an upper sealing ring and a lower sealing ring (11) are arranged on a cylindrical matching surface between the middle sliding sleeve (6) and the fixed sleeve (8), and the two sealing rings (11) are respectively positioned above and below the balance hole (12);
a sealing ring (11) is arranged on a sliding matching surface between the middle sliding sleeve (6) and the inner sliding sleeve (7);
the lower end of the middle sliding sleeve (6) is open, and the lower end of the fixed sleeve (8) is blocked;
a sealed cavity called as an energy storage cavity (10) is arranged below the fixed sleeve (8);
the lower joint (9) is fixedly connected to the lower end of the outer barrel (5) through threads.
2. The device of claim 1 for preventing wax deposition in a well downhole, comprising: silicone grease (21) is filled in the energy storage cavity (10), a piston (16) is arranged below the energy storage cavity (10), a spring B (14) is arranged between the lower part of the piston (16) and the lower joint (9), and the piston (16) always keeps a movement trend of approaching the fixed sleeve (8) under the elastic force action of the spring B (14).
3. The device of claim 1 for preventing wax deposition in a well downhole, comprising: the upper end of middle sliding sleeve (6) with accompany spring C (15) between the lower terminal surface of hollow sucker rod (3), middle sliding sleeve (6) remain the motion trend that is close to fixed cover (8) all the time under the effect of spring C (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110006815.0A CN112832713B (en) | 2021-01-05 | 2021-01-05 | Oil well down-hole non-wax deposition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110006815.0A CN112832713B (en) | 2021-01-05 | 2021-01-05 | Oil well down-hole non-wax deposition device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112832713A CN112832713A (en) | 2021-05-25 |
| CN112832713B true CN112832713B (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110006815.0A Active CN112832713B (en) | 2021-01-05 | 2021-01-05 | Oil well down-hole non-wax deposition device |
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| Country | Link |
|---|---|
| CN (1) | CN112832713B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2677593Y (en) * | 2003-09-08 | 2005-02-09 | 焦士俊 | Casing scraping sand washer |
| RU2280153C1 (en) * | 2005-02-11 | 2006-07-20 | Юрий Сергеевич Самгин | Heating method and device for oil production well provided with sucker-rod borehole pump |
| CN201061115Y (en) * | 2007-06-21 | 2008-05-14 | 武汉华瑞电力科技股份有限公司 | 110kV-220kV crosslinked cable GIS terminal |
| CN205977178U (en) * | 2016-08-25 | 2017-02-22 | 鞍山新兴石油科技有限公司 | Intelligent digital hollow sucker rod's wax removal wax control electric heater unit |
| CN210264557U (en) * | 2019-02-14 | 2020-04-07 | 石家庄之迪石油工程技术有限责任公司 | Hollow sucker rod with heating function |
-
2021
- 2021-01-05 CN CN202110006815.0A patent/CN112832713B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2677593Y (en) * | 2003-09-08 | 2005-02-09 | 焦士俊 | Casing scraping sand washer |
| RU2280153C1 (en) * | 2005-02-11 | 2006-07-20 | Юрий Сергеевич Самгин | Heating method and device for oil production well provided with sucker-rod borehole pump |
| CN201061115Y (en) * | 2007-06-21 | 2008-05-14 | 武汉华瑞电力科技股份有限公司 | 110kV-220kV crosslinked cable GIS terminal |
| CN205977178U (en) * | 2016-08-25 | 2017-02-22 | 鞍山新兴石油科技有限公司 | Intelligent digital hollow sucker rod's wax removal wax control electric heater unit |
| CN210264557U (en) * | 2019-02-14 | 2020-04-07 | 石家庄之迪石油工程技术有限责任公司 | Hollow sucker rod with heating function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112832713A (en) | 2021-05-25 |
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Effective date of registration: 20230328 Address after: 163000 Workshop 04, Petroleum Equipment Park, High-tech Zone, Daqing City, Heilongjiang Province Patentee after: DAQING KEFENG PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 163000 room 213, block B, chuangying building, petroleum equipment Park, Daqing high tech Zone, Heilongjiang Province Patentee before: Daqing Kedao Petroleum Technology Co.,Ltd. |