CN108412444B - Wellhead throwing and recycling device of hydraulic paraffin cleaner of rodless pump - Google Patents
Wellhead throwing and recycling device of hydraulic paraffin cleaner of rodless pump Download PDFInfo
- Publication number
- CN108412444B CN108412444B CN201810384728.7A CN201810384728A CN108412444B CN 108412444 B CN108412444 B CN 108412444B CN 201810384728 A CN201810384728 A CN 201810384728A CN 108412444 B CN108412444 B CN 108412444B
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- 239000012188 paraffin wax Substances 0.000 title claims abstract description 92
- 238000004064 recycling Methods 0.000 title abstract description 12
- 238000011084 recovery Methods 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims abstract description 14
- 238000007906 compression Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000000605 extraction Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 19
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000003129 oil well Substances 0.000 description 4
- 239000001993 wax Substances 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
- E21B23/10—Tools specially adapted therefor
-
- 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
- E21B37/02—Scrapers specially adapted therefor
- E21B37/04—Scrapers specially adapted therefor operated by fluid pressure, e.g. free-piston scrapers
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
A well head throwing and recycling device of a hydraulic paraffin cleaner of a rodless pump. The main aim is to utilize the device to realize the throwing and recovery of the hydraulic automatic paraffin removal device of the rodless pump oil extraction well at the well mouth. The method is characterized in that: the device comprises an upper part and a lower part, wherein the upper part is a hydraulic cylinder, the lower part is a paraffin cleaner recovery unit, and the telescopic hydraulic cylinder is used for pushing the hydraulic paraffin cleaner to move downwards; the hydraulic cylinder is connected with a lower paraffin cleaner recovery unit through a flange type cylinder barrel, and the paraffin cleaner recovery unit mainly comprises a collecting and releasing cylinder, a sliding tube, a sliding ring, a spring pin and the like; the sliding tube is fixed with the first-stage retractable cylinder through a lower flange; the spring pin structure consists of a lower flange, a steel ball, a compression spring, a sealing ring and a side bolt, and is used for clamping the paraffin remover after the primary paraffin remover and the third paraffin removal of the paraffin remover are finished.
Description
Technical field:
the invention relates to a well head hydraulic paraffin remover throwing and recycling device which can be applied to the mechanical paraffin removal process of an oil well and realize automation.
The background technology is as follows:
at present, the oil field exploitation is carried out at the middle and later stages, the yield of the waxy crude oil is rapidly increased, and in the oil exploitation process, the wax dissolved in the crude oil can be separated out in a crystal form and adsorbed on an oil pipe and underground equipment, so that the wax precipitation of the oil well not only causes the flow cross section of fluid lifting to be reduced, increases the local resistance of the fluid, but also can influence the normal work of the oil well equipment, and greatly increases the oil exploitation cost of the oil field. The submersible electric pump in the oil field is commonly used nowadays, and with the continuous development of submersible screw pumps and underground linear motor oil extraction system technologies, the number of sucker-rod pump oil extraction wells is increased continuously, the sucker-rod pump oil extraction mode changes the liquid flow transportation condition in the original pipe column, and meanwhile, the opportunity of wax precipitation is increased. The hydraulic paraffin removal device is designed and an invention patent is applied for aiming at the problem of paraffin removal of the oil pipe of the rodless pump well, and in the paraffin removal process, the hydraulic paraffin removal device controls the hydraulic force born by the paraffin removal device by changing the annular flow area formed in the oil pipe, so as to realize ascending and descending. The hydraulic automatic paraffin removal device does not need external power, the scraper is retracted when descending, the diameter is small, the hydraulic automatic paraffin removal device is easy to descend, and the paraffin removal diameter is flexible and controllable. The hydraulic paraffin removal device is required to be put into a well at a rodless pump wellhead before working, and is required to be recovered from the well after paraffin removal operation is completed, and the whole put-paraffin removal-recovery process is carried out, so that the put-in recovery device is required to be designed to realize the functions.
The invention comprises the following steps:
in order to solve the technical problems in the background art, the invention provides a well head throwing and recycling device of a hydraulic paraffin cleaner with a rodless pump, which has a simple structure and ingenious design and can realize the throwing and recycling process of the hydraulic paraffin cleaner.
The technical scheme of the invention is as follows: this kind of recovery unit is put in to rodless pump hydraulic paraffin cleaner well head, including flexible pneumatic cylinder, one-level receive and release section of thick bamboo and second grade receive and release section of thick bamboo, its unique lies in:
the telescopic hydraulic cylinder is a double-acting secondary telescopic cylinder, the oil inlet and the oil outlet are formed in the cylinder barrel 1, the telescopic hydraulic cylinder is provided with a primary piston rod and a secondary piston rod, and the cylinder barrel is a flange type cylinder barrel and is integrated.
The upper end of the first-stage retractable cylinder is connected with a flange of the first-stage retractable cylinder in a welding mode; the lower end of the first-stage retractable cylinder is connected with the upper flange in a welding mode; the upper end of the secondary winding and unwinding cylinder is connected with the lower flange in a welding mode, and the lower end of the secondary winding and unwinding cylinder is connected with the wellhead flange in a welding mode; a first nonmetal gasket is placed between a flange plate of the hydraulic cylinder flange and the first-stage retractable cylinder flange and is locked by a fastening bolt and a nut.
At least 4 through holes with internal threads are formed in the flange plate of the lower flange along the radial direction, the through holes are uniformly distributed on the flange plate, and the junction point of the central lines of the through holes is positioned on the central line of the flange plate of the lower flange; the steel ball, the compression spring, the sealing ring and the side bolt are sequentially arranged in the through hole from inside to outside, and the side bolt is connected with the through hole through threads; the top end of the side bolt is contacted with the compression spring so as to compress the compression spring; the inner side curved surface of the through hole is arc-shaped, so that the part of the steel ball extending out of the through hole is less than half of the steel ball.
The device also comprises a slide tube and a slide ring; an upper rail and a lower rail which are concave inwards are arranged on the slide tube; the upper track is formed by connecting three inverted saw teeth with the same tooth tip angle through arc transition, wherein the three arcs are three standing point positions positioned above, and the included angle between a first guide surface and a second guide surface of the inverted saw tooth tip is formed to be smaller than 60 degrees; the lower track is formed by connecting three positive sawteeth with the same tooth tip angle through a first vertical groove, a second vertical groove and a third vertical groove in sequence, wherein the depths of the second vertical groove and the third vertical groove are the same, and the first vertical groove is longer than the depths of the other two vertical grooves; the included angle between the third guide surface and the fourth guide surface forming the positive sawtooth tooth tip is equal to 60 degrees, and each inverted sawtooth of the upper track axially corresponds to one vertical groove of the lower track, but the axial tangential plane of the sliding tube passing through the inverted sawtooth tooth tip is not overlapped with the axial tangential plane of the sliding tube passing through the central line of the vertical groove; the plane unfolding patterns of the upper rail and the lower rail on the slide tube are closed patterns; the slip ring is fixed in the inner cylinder of the upper flange, and is provided with a pin hole for inserting a track pin; the slip ring is sleeved on the outer wall of the slip tube, and the track pin penetrates through the slip ring and is arranged in the track of the slip tube.
The invention has the following beneficial effects: the releasing and recycling device mainly comprises a telescopic hydraulic cylinder and a paraffin remover recycling unit, wherein the telescopic hydraulic cylinder is a double-acting two-stage telescopic oil cylinder, an oil inlet and an oil outlet are formed in an oil cylinder barrel, the extension and the retraction of a hydraulic cylinder piston rod are controlled through underground liquid pressure and a three-position four-way valve, and the paraffin remover recycling unit mainly comprises a sliding tube sliding ring structure and a spring pin structure. The outer wall of the slide tube is provided with a track which is connected with the slide ring through a track pin. The control and recovery of the three-stage paraffin removal of the paraffin remover can be realized by virtue of the relative movement of the track pin and the slide tube. The spring pin structure consists of steel balls, springs, sealing rings, bolts and the like, is arranged in the flange, and is uniformly distributed in the flange. The inner side of the through hole in the flange is designed into an arc shape, so that the leakage part of the steel ball is less than one half, the steel ball is retracted when the hydraulic cylinder pushes the paraffin cleaner to move downwards, the spring is compressed, and the paraffin cleaner moves downwards smoothly. After the third paraffin removal of the paraffin remover is finished, the paraffin remover is clamped on the spring pin, so that the recovery work of the paraffin remover is finished.
Firstly, the recovery device utilizes the telescopic hydraulic cylinder to push the hydraulic paraffin cleaner to descend, so that the stroke can be effectively reduced, the space can be saved, and the pressure of underground liquid can be effectively utilized; secondly, the design of the sliding tube slip ring and the spring pin in the recovery device utilizes the characteristics of the hydraulic paraffin cleaner to realize the automatic recovery of the paraffin cleaner; and the recycling device can put in and recycle the paraffin remover under the condition of not shutting down the pump, thereby improving the working efficiency and greatly reducing the working intensity and the production cost.
Description of the drawings:
FIG. 1 is a longitudinal sectional view of a hydraulic wax cleaner delivery recovery apparatus;
FIG. 2 is a three-dimensional view of the appearance of the present invention;
FIG. 3 is a plan expanded view of the slide tube rail of the present invention;
FIG. 4 is a schematic view of the slip ring structure of the slip tube of the present invention;
fig. 5 is a schematic view of the retracting mechanism of the present invention.
1-a cylinder barrel; a stage 2 piston rod; 3-second-stage piston rods; 4-fastening bolts; 5-a hydraulic cylinder flange; 6-a first non-metallic gasket; 7-a first-stage retractable cylinder flange; 8-a gasket; 9-a nut; 10-a first-level retractable cylinder; 11-slide tube; 12-an upper flange; 13-a second non-metallic gasket 14-a lower flange; 15-a secondary winding and unwinding cylinder; 16-wellhead flange; 17-a sealing ring; 18-side bolts; 19-compressing a spring; 20-steel balls; 21-slip rings; 22-track pin, 23-third guide surface, 24-fourth guide surface, 25-first guide surface, 26-second guide surface.
The specific embodiment is as follows:
the invention is further described below with reference to the accompanying drawings:
as shown in fig. 1 to 5, the wellhead releasing and recycling device of the hydraulic paraffin cleaner of the rodless pump comprises a telescopic hydraulic cylinder, a primary winding and unwinding cylinder 10 and a secondary winding and unwinding cylinder 15, and is characterized in that:
the telescopic hydraulic cylinder is a double-acting secondary telescopic cylinder, an oil inlet and an oil outlet are formed in the cylinder barrel 1, the telescopic hydraulic cylinder is provided with a primary piston rod 2 and a secondary piston rod 3, and the cylinder barrel is a flange type cylinder barrel and is integrated.
The upper end of the first-stage retractable cylinder 10 is connected with a first-stage retractable cylinder flange 7 in a welding mode; the lower end of the first-stage retractable cylinder 10 is connected with an upper flange 12 in a welding mode; the upper end of the secondary winding and unwinding barrel 15 is connected with the lower flange 14 in a welding mode, and the lower end of the secondary winding and unwinding barrel 15 is connected with the wellhead flange 16 in a welding mode; a first nonmetal gasket 6 is placed between a flange plate of the hydraulic cylinder flange and the first-stage retractable cylinder flange 7 and is locked by a fastening bolt 4 and a nut 9.
At least 4 through holes with internal threads are formed in the flange plate of the lower flange 14 along the radial direction, the through holes are uniformly distributed on the flange plate, and the junction point of the central lines of the through holes is positioned on the central line of the flange plate of the lower flange 14; the steel ball 20, the compression spring 19, the sealing ring 17 and the side bolt 18 are sequentially arranged in the through hole from inside to outside, and the side bolt 18 is connected with the through hole through threads; the top end of the side bolt 18 contacts with the compression spring 19 to compress the compression spring 19; the inner curved surface of the through hole is curved so that the portion of the steel ball 20 protruding out of the through hole is less than one half.
The device further comprises a slide tube 11 and a slide ring 21; the slide tube 11 is provided with an upper rail and a lower rail which are concave inwards; the upper track is formed by connecting three inverted saw teeth with the same tooth tip angle through arc transition, wherein the three arcs are three standing point positions positioned above, and the included angle between a first guide surface 25 and a second guide surface 26 forming the inverted saw tooth tip is smaller than 60 degrees; the lower track is formed by connecting three positive sawteeth with the same tooth tip angle through a first vertical groove a, a second vertical groove b and a third vertical groove c in sequence, wherein the depths of the second vertical groove b and the third vertical groove c are the same, and the first vertical groove is longer than the depths of the other two vertical grooves; the included angle between the third guide surface 23 and the fourth guide surface 24 forming the positive sawtooth tooth tip is equal to 60 degrees, and each inverted sawtooth of the upper track axially corresponds to one vertical groove of the lower track, but the axial tangential plane of the sliding tube passing through the inverted sawtooth tooth tip is not coincident with the axial tangential plane of the sliding tube passing through the central line of the vertical groove; the plane unfolding patterns of the upper rail and the lower rail on the slide tube 11 are closed patterns; a slip ring 21 is fixed in the inner cylinder of the upper flange 12, and a pin hole for inserting a track pin 22 is formed on the slip ring 21; the slip ring 21 is sleeved on the outer wall of the slip tube 11, and the track pin 22 passes through the slip ring 21 and is arranged in the track of the slip tube 11.
In summary, the throwing and recycling device of the paraffin cleaner is of an upper part and a lower part, wherein the upper part is provided with a telescopic hydraulic cylinder, and the function of the telescopic hydraulic cylinder is to push the hydraulic paraffin cleaner to descend, so that the hydraulic paraffin cleaner passes through a spring pin and smoothly passes through a wellhead valve. The piston rod is pushed to descend by utilizing underground liquid pressure, and the hydraulic cylinder is connected with a paraffin remover recovery device below through a flange. The lower part is a paraffin cleaner recovery unit which mainly comprises a winding and unwinding cylinder, a sliding tube, a sliding ring, a spring pin and the like. The track pin 22 passes through the slip ring 21 and is arranged at the track a position of the slip tube 11, and the slip ring structure of the slip tube is shown in a schematic view in fig. 3. Because the slide tube expansion structure is the track of two kinds of different length, under the effect of hydraulic paraffin cleaner, the slide tube can reciprocate, and the sliding ring is fixed through below lower flange 14 and one-level receive and release section of thick bamboo 10, and one-level receive and release section of thick bamboo links to each other with upper flange 12 through welded connected mode, and upper flange passes through the bolt and links to each other with the lower flange, and the lower flange passes through welded connected mode and is connected with second grade receive and release section of thick bamboo 15, and second grade receive and release section of thick bamboo passes through welded connected mode and links to each other with well head flange 16. The wellhead flange is connected with the upper flange of the Christmas tree paraffin removal valve through bolts. The spring pin structure comprises a lower flange, a steel ball, a compression spring, a sealing ring and a side bolt, wherein the steel ball 20, the compression spring 19, the sealing ring 17 and the side bolt 18 are sequentially arranged in the lower flange 14, and the side bolt is connected with the lower flange through threads. The spring pin is used to lock the cleaner after the first and third paraffin removal of the cleaner has been completed.
The working process of the hydraulic paraffin cleaner feeding and recovering device is as follows: the hydraulic paraffin cleaner is firstly hung on a spring pin, the hydraulic paraffin cleaner is hung by an extended steel ball, the upper side of the paraffin cleaner is propped against a slide tube, at the moment, the rail pin is positioned at the position of a long rail a of the slide tube, a corresponding rail is arranged on the outer wall of the slide tube, as shown in fig. 3, a rail plane unfolding diagram is shown, the slide tube unfolding structure comprises two rails with different lengths, two short rails and one long rail, and the length of the rail is determined by a salvaging head of the hydraulic paraffin cleaner. Above the three standing point positions, the included angle between the first guide surface 25 and the second guide surface 26 is 52 degrees, and the included angle between the third guide surface 23 and the fourth guide surface 24 is 60 degrees in the specific implementation. According to the designed track size, the rising distance of the paraffin remover can be just controlled every time, so that the effect of three-level paraffin removal is achieved. The track pin between the slip ring and the slip tube runs along the track. The slip ring is fixed, and the slip tube moves up and down. The telescopic hydraulic cylinder pushes the hydraulic paraffin cleaner to descend, the steel ball is retracted, the spring is compressed, the hydraulic paraffin cleaner descends, the sliding tube moves downwards along with the paraffin cleaner under the action of dead weight, the track pin slides into the position d through the long track, at the moment, the sliding tube is not hung by the track pin, the sliding tube does not descend along with the paraffin cleaner, the hydraulic paraffin cleaner enters the well to perform paraffin cleaning work, and the telescopic hydraulic cylinder is retracted. When the primary paraffin removal is finished, the paraffin remover automatically ascends under the action of oil in the oil well pipe column, and is pushed to ascend after touching the sliding pipe, at the moment, the track pin slides to the position of the short track b along the third guide surface 23 from the position d, and the paraffin remover continuously moves downwards to perform secondary paraffin removal work due to the structural characteristics of the paraffin remover, so that the movement condition of the secondary paraffin removal work is the same as that of the primary paraffin removal work. When the three-stage paraffin removal work is completed, the track pin slides back to the position a along the track in the ascending process, the hydraulic paraffin remover can ascend to a higher height beyond the spring pin and is hung by the spring pin again, and the recovery of the hydraulic paraffin remover is completed.
Claims (1)
1. The utility model provides a recovery unit is put in to rodless pump hydraulic paraffin cleaner well head, and the upper portion is flexible pneumatic cylinder, and the lower part is paraffin cleaner recovery unit, its characterized in that:
the telescopic hydraulic cylinder is a double-acting secondary telescopic cylinder, the oil inlet and the oil outlet are arranged in a cylinder barrel, the telescopic hydraulic cylinder is provided with a primary piston rod and a secondary piston rod, and the cylinder barrel is a flange type cylinder barrel and is integrated; the telescopic hydraulic cylinder controls the extension and retraction of a hydraulic cylinder piston rod through underground liquid pressure and a three-position four-way valve, so that the hydraulic paraffin remover is pushed to descend, and the hydraulic paraffin remover passes through a spring pin and smoothly passes through a wellhead valve;
the telescopic hydraulic cylinder is connected with the lower paraffin cleaner recovery unit through a flange cylinder barrel;
the paraffin cleaner recovery unit comprises a winding and unwinding cylinder, a sliding tube, a sliding ring and a spring pin; the retractable cylinder comprises a first-stage retractable cylinder and a second-stage retractable cylinder;
the upper end of the first-stage retractable cylinder is connected with a flange of the first-stage retractable cylinder in a welding mode; the lower end of the first-stage retractable cylinder is connected with the upper flange in a welding mode; the upper end of the secondary winding and unwinding cylinder is connected with the lower flange in a welding mode, and the lower end of the secondary winding and unwinding cylinder is connected with the wellhead flange in a welding mode; a first nonmetal gasket is placed between the flange plate of the hydraulic cylinder flange and the first-stage retractable cylinder flange and is locked by a fastening bolt and a nut;
the sliding tube unfolding structure is composed of two rails with different lengths, and the sliding tube can move up and down under the action of the hydraulic paraffin remover; the outer wall of the sliding tube is provided with a track which is connected with the sliding ring through a track pin;
the two rails with different lengths are respectively an upper rail and a lower rail which are inwards concave and are arranged on the slide tube; the upper track is formed by connecting three inverted saw teeth with the same tooth tip angle through arc transition, wherein the three arcs are three standing point positions positioned above the upper track, and the included angle between a first guide surface and a second guide surface of the inverted saw tooth tip is equal to 52 degrees; the lower track is formed by connecting three positive sawteeth with the same tooth tip angle through a first vertical groove, a second vertical groove and a third vertical groove in sequence, wherein the depths of the second vertical groove and the third vertical groove are the same, and the first vertical groove is longer than the depths of the other two vertical grooves; the included angle between the third guide surface and the fourth guide surface forming the positive sawtooth tooth tip is equal to 60 degrees, and each inverted sawtooth of the upper track axially corresponds to one vertical groove of the lower track, but the axial tangential plane of the sliding tube passing through the inverted sawtooth tooth tip is not overlapped with the axial tangential plane of the sliding tube passing through the central line of the vertical groove; the plane unfolding patterns of the upper rail and the lower rail on the slide tube are closed patterns;
the slip ring is fixed in the inner cylinder of the upper flange, and is provided with a pin hole for inserting a track pin; the sliding ring is sleeved on the outer wall of the sliding tube, the track pin penetrates through the sliding ring and is arranged in a track of the sliding tube, the track pin between the sliding ring and the sliding tube moves along the track, the sliding ring does not move, the sliding tube moves up and down, and the three-stage paraffin removal control and recovery of the paraffin remover are realized by means of the relative movement of the track pin and the sliding tube;
the spring pin consists of a lower flange, a steel ball, a compression spring, a sealing ring and side bolts, wherein at least 4 through holes with internal threads are formed in the radial direction on the flange of the lower flange, the through holes are uniformly distributed on the flange, and a junction point of the central line of the through holes is positioned on the central line of the flange of the lower flange; the steel ball, the compression spring, the sealing ring and the side bolt are sequentially arranged in the through hole from inside to outside, and the side bolt is connected with the through hole through threads; the top end of the side bolt is contacted with the compression spring so as to compress the compression spring; the inner side curved surface of the through hole is arc-shaped, so that the part of the steel ball extending out of the through hole is less than half of the part;
the spring pin is used for clamping the paraffin remover after the paraffin remover is used for removing paraffin for the first time and the third time, the steel ball is retracted when the hydraulic cylinder pushes the paraffin remover to move downwards, the compression spring is compressed, the paraffin remover moves downwards, and the paraffin remover is clamped on the spring pin after the paraffin remover is used for removing paraffin for the third time, so that recovery work of the paraffin remover is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810384728.7A CN108412444B (en) | 2018-04-26 | 2018-04-26 | Wellhead throwing and recycling device of hydraulic paraffin cleaner of rodless pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810384728.7A CN108412444B (en) | 2018-04-26 | 2018-04-26 | Wellhead throwing and recycling device of hydraulic paraffin cleaner of rodless pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108412444A CN108412444A (en) | 2018-08-17 |
| CN108412444B true CN108412444B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810384728.7A Active CN108412444B (en) | 2018-04-26 | 2018-04-26 | Wellhead throwing and recycling device of hydraulic paraffin cleaner of rodless pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108412444B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382430B (en) * | 2021-11-26 | 2023-08-22 | 中国石油天然气股份有限公司 | Downhole tool releaser for oil extraction |
| CN114687689B (en) * | 2022-04-21 | 2023-06-23 | 西南石油大学 | Recyclable bridge plug throwing tool |
| CN116927722B (en) * | 2023-08-05 | 2024-05-10 | 东北石油大学 | Oil pipe paraffin removal and descaling method and assembly and device for implementing same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2203776A (en) * | 1987-04-10 | 1988-10-26 | Otis Eng Co | Pressure actuated cleaning tool |
| US6065541A (en) * | 1997-03-14 | 2000-05-23 | Ezi-Flow International Limited | Cleaning device |
| CN103306640A (en) * | 2013-07-04 | 2013-09-18 | 东北石油大学 | Fluid power paraffin removal device of rodless pump oil recovery system |
| CN206220931U (en) * | 2016-10-27 | 2017-06-06 | 中国石油天然气股份有限公司 | A kind of non-lever oil production well mechanical paraffin removal device |
-
2018
- 2018-04-26 CN CN201810384728.7A patent/CN108412444B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2203776A (en) * | 1987-04-10 | 1988-10-26 | Otis Eng Co | Pressure actuated cleaning tool |
| US4799554A (en) * | 1987-04-10 | 1989-01-24 | Otis Engineering Corporation | Pressure actuated cleaning tool |
| US6065541A (en) * | 1997-03-14 | 2000-05-23 | Ezi-Flow International Limited | Cleaning device |
| CN103306640A (en) * | 2013-07-04 | 2013-09-18 | 东北石油大学 | Fluid power paraffin removal device of rodless pump oil recovery system |
| CN206220931U (en) * | 2016-10-27 | 2017-06-06 | 中国石油天然气股份有限公司 | A kind of non-lever oil production well mechanical paraffin removal device |
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| Publication number | Publication date |
|---|---|
| CN108412444A (en) | 2018-08-17 |
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