CN213330949U - Carbon fiber continuous sucker rod centralizing and paraffin scraping device - Google Patents
Carbon fiber continuous sucker rod centralizing and paraffin scraping device Download PDFInfo
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- CN213330949U CN213330949U CN202022418324.0U CN202022418324U CN213330949U CN 213330949 U CN213330949 U CN 213330949U CN 202022418324 U CN202022418324 U CN 202022418324U CN 213330949 U CN213330949 U CN 213330949U
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Abstract
The utility model discloses a carbon fiber continuous sucker rod centralizing paraffin scraper, which comprises a body, wherein a spiral centralizing paraffin scraper is arranged in the body, chamfers are arranged at two ends of the centralizing paraffin scraper, the centralizing paraffin scraper forms a diversion trench in the body, and the body is of a split structure and is provided with a split structure I and a split structure II; nuts can be installed at the two ends of the split structure I and the split structure II after the split structure I and the split structure II are combined. The utility model provides a carbon fiber sucker rod oil well tubular pole prevent the technological problem of eccentric wear, paraffin removal wax control, provide powerful technical support for the further popularization and application of carbon pole. The utility model discloses there is the disturbance effect to the liquid stream, makes the difficult deposit of wax to along with the up-and-down motion of carbon pole, the wax of oil pipe wall is continuous to be clear away, along with the oil stream takes out the well head, when playing rightting, paraffin removal wax control in the oil recovery well is used to the carbon pole, plays the extension and examines the pump cycle, alleviate workman's intensity of labour and reduce the effect to environment and oil reservoir pollution.
Description
Technical Field
The utility model relates to a pipe pole eccentric wear prevention, clear wax control device of carbon fiber sucker rod pumping well, specifically speaking are exactly carbon fiber sucker rod rights paraffin scraper.
Background
The carbon fiber reinforced composite material is an advanced composite material taking fiber as a reinforcement and resin as a matrix, has the advantages of high strength, light weight, corrosion resistance and the like, and can effectively solve the application limitation of the traditional steel sucker rod caused by dead weight, strength, corrosion resistance and the like. Carbon fiber continuous sucker rod, the following carbon rod for short because light in weight, intensity are big, do not have an festival hoop, utilize under the condition of current equipment, the pump hangs the multiplicable 500 of the degree of depth and supplyes one's charge 1000m, has widened the application range of current sucker rod pump greatly, and its characteristics are:
(1) the method is applied to ultra-deep pumping of deep low-permeability oil reservoirs, and solves the problems of low lifting efficiency and low liquid quantity;
(2) the oil-well pump is applied to a medium-low permeability oil reservoir large pump deep pumping well to replace a small displacement electric pump;
(3) the oil well is used in a slim-hole ultra-deep pumping well;
(4) the corrosion-resistant oil pumping rod is used in a high-salinity oil pumping well, and can prevent corrosion and prolong the service life of the oil pumping rod string.
On one hand, wax deposition of the oil well influences the flow cross section of fluid lifting, and the flow resistance is increased; on the other hand, the normal operation of the oil pumping equipment is affected. The wax precipitation comprises three stages of wax precipitation, wax crystal growth and deposition. The wax precipitation process is controlled at any stage to achieve the purpose of removing and preventing wax.
The carbon rod is only 1/4 of the same diameter steel rod weight because of light weight and large tensile strength, and the carbon rod is mainly applied to the ultra-deep pumping measure of the small pump of the low-permeability deep reservoir. The difference between the formation pressure and the saturation pressure of the low-permeability deep reservoir is small, and degassing is serious, so that the deep pumping well basically produces wax, and the wax production of the oil well limits the popularization and application range of the carbon rod.
Although the carbon rod has high tensile strength, the carbon rod has weak shear resistance, and the surface of the carbon rod is eccentrically worn with the inner wall of the oil pipe, so that the carbon rod is easily split and falls, and the pump inspection operation is caused. Because there is no joint hoop, also use the carbon rod in the small bore pumping well, the small bore pumping well tube-rod interval is small, the tube-rod eccentric wear is more serious. The outermost layer of the carbon rod is made of resin materials and is not resistant to high temperature, and a wax-deposited carbon rod application well cannot adopt a high-temperature fluid paraffin removal measure, so that serious paraffin deposition easily causes the carbon rod application well to clamp a carbon rod sucker rod string, thereby causing pump inspection operation. At present, a righting and wax scraping device correspondingly matched with a steel sucker rod is very perfect, and once a carbon rod enters a well, the carbon rod is at least more than 500 meters, so that the shearing resistance is weak, and the carbon rod is taken off by special operating equipment, and no mechanical eccentric wear preventing and wax scraping device special for the carbon rod exists in the production field at present.
At present, the existing wax scraping devices for the oil production wells have the following types, but are not suitable for carbon rod pumping wells:
patent application No. 201220261822.1 discloses a mechanical paraffin scraper for oil production wells, which uses an injection thermosetting process to thermally fix on a common sucker rod at a distance smaller than the stroke of a pumping unit, and paraffin removal is performed on the paraffin-fixed oil well. The wax scraper is provided with a central hole, wax scraping sheets are arranged at intervals on the periphery of a body of the wax scraper, the wax scraping sheets are spiral trapezoid sheet-shaped bodies, and a diversion trench is formed between the wax scraping sheets to ensure smooth liquid flow. The utility model discloses the wax scraper that makes super strong nylon materials adopts the processing technology of the thermosetting of moulding plastics to fix on ordinary sucker rod with the interval that is less than the beam-pumping unit stroke, makes the difficult deformation that drops of wax scraper to high temperature resistant, wear-resisting. The radian of the diversion trench formed between the wax scraping sheets is large, so that seamless wax scraping within 360 degrees can be realized, the contact surface between the wax scraping sheets and an oil pipe is enlarged, and liquid flow is smoother. The wax removal and prevention can be realized, the pump detection period can be prolonged, the labor intensity of workers is reduced, and the environment and oil layers are reduced. The wax scraper can only be thermally fixed on a common sucker rod, the thermal fixing temperature is nearly 300 degrees, and the surface of the carbon rod can be seriously damaged by high temperature.
Patent document No. 201410437490.1 discloses a sucker rod wax scraper, this sucker rod wax scraper, the suit is on the sucker rod, the sucker rod wax scraper includes: the hollow inner diameter variable cylindrical sleeve, the hollow inner diameter variable conical sleeve, the telescopic fastener, the supporting seat, the inner bushing, the shell, the rolling bearing and the bottom plug. The utility model forms the sucker rod wax scraper by connecting the components in sequence from top to bottom; the double threads are arranged on the inner wall of the cylindrical sleeve, the inner diameter of the double threads is 0.5-1mm larger than the diameter of the sucker rod, when the sucker rod passes through the cylindrical sleeve, a large block of oil stain on the sucker rod can be scraped, direct friction with the sucker rod is avoided, the sucker rod and the wax scraper are protected, the sucker rod and the wax scraper are both more durable, the replacement cost is reduced, fire accidents caused by heat generation due to friction between the sucker rod and the wax scraper are avoided, and the construction safety is improved; and, set up the changeable hollow structure of internal diameter with cylindricality cover, toper cover, when the coupling passes through, can strut them to sufficient space, make the coupling pass through smoothly without hindrance, convenient and fast. The wax scraper can only be sleeved on the sucker rod, the length of the common sucker rod is only about 9m, and the wax scraper cannot be sleeved on a carbon rod with the length of at least 500 m.
The patent document with application number 201420447071.1 discloses a sucker rod centralizer, the utility model discloses the piece of rightting that guiding gutter periphery interval set up is the trapezoidal block of spiral, and the guiding gutter that forms makes the liquid stream unblocked. The sucker rod coupling is made of super-strong nylon materials by adopting a thermoplastic technology and is arranged at the two ends and the middle of the rod body of the sucker rod, so that the sucker rod coupling and the rod body are prevented from being worn; the carbon fiber nano material is added in the formula of the raw material, so that the wear resistance is better. The utility model is spiral in shape, so that the utility model has the functions of increasing the contact area and reducing eccentric wear; the special anti-drop technology and one-step forming process are adopted, so that the anti-drop oil pipe cannot drop under the condition of large friction force between the underground and the oil pipe. The utility model is proved by field tests that the strengthening effect is good, and the pump checking period of the small casing eccentric wear pumping well is greatly prolonged; high temperature resistance and corrosion resistance; the strength is high, and the falling is not easy; the technology is mature, the performance is reliable, and the method has a popularization prospect. The centralizer can only be thermally fixed on a common sucker rod because the thermal fixing temperature is nearly 300 degrees, and the surface of the carbon rod can be seriously damaged by high temperature.
Disclosure of Invention
The utility model aims at providing a carbon fiber sucker rod in succession is right and is scraped wax device makes the carbon rod can use in the pumping well of wax precipitation pumping well and certain well inclination angle's that exists, solves the technological problem of carbon rod pumping well paraffin removal paraffin control, pipe pole eccentric wear, prolongs the pump cycle of examining of carbon rod pumping well, reduction in production cost.
The technical scheme of the utility model is that:
carbon fiber sucker rod is right and is scraped wax device includes the body, is equipped with the heliciform in the body and right the paraffin scraper, and the both ends of rightting the paraffin scraper are equipped with the chamfer, right the paraffin scraper and form guiding gutter, characterized by in the body:
the body is of a split structure and is provided with a first split structure and a second split structure;
nuts can be installed at the two ends of the split structure I and the split structure II after the split structure I and the split structure II are combined.
The aperture of the center hole formed by combining the split structure I and the split structure II is smaller than the outer diameter of the carbon fiber continuous sucker rod.
And the carbon fiber lining layers are bonded in the involutory holes in the centers of the semicircles of the first split structure and the second split structure.
Inner cavities at two ends of the first split structure and the second split structure are conical cavities, outer circles at two ends of the first split structure and the second split structure are provided with external threads, and the first split structure and the second split structure can be connected with nuts.
And a limiting groove or a limiting boss can be arranged on the fitting surface on one side of the split structure.
And a limiting groove or a limiting boss can be arranged on the mating surface on one side of the split structure.
The limiting grooves in the two joint surfaces of the first split structure and the second split structure are matched with the limiting bosses in shape and can be matched with each other.
The spiral angle of the centralizing paraffin scraping plate is set between 60 and 95 degrees; the angle of the chamfer is set between 35 and 50 degrees.
The spiral angle of the centralizing paraffin scraping plate is 80 degrees; the angle of the chamfer is 45 °.
The outer diameter of the carbon fiber continuous sucker rod centralizing and wax scraping device is 3-5 mm smaller than the inner diameter of an oil pipe in the oil production well; the carbon fiber continuous sucker rod centralizing and wax scraping device is fixed on the carbon fiber continuous sucker rod at the interval equal to or less than the stroke of the used well pumping unit.
The utility model discloses a show the result of use and be:
the carbon rod is used from the beginning, and until now, a device for preventing eccentric wear and cleaning wax of the carbon rod on line in real time does not appear on a production field. The utility model provides a carbon fiber sucker rod oil well tubular pole prevent the technological problem of eccentric wear, paraffin removal wax control, provide powerful technical support for the further popularization and application of carbon pole.
Because the carbon pole goes into the well at least more than 500 meters, for solving and install additional and dismantle this problem of righting wax scraping device outside the continuous sucker rod of carbon fiber, the utility model discloses before the carbon pole is gone into the well, according to the designing requirement advance the nut cluster cover of a certain amount in the carbon pole outside, at the in-process of going into the well, fold the components of a whole that can function independently structure one and the components of a whole that can function independently structure two of this device on the carbon pole in the design position of carbon pole, then screw up the nut at both ends again, firmly fix righting wax scraping device on the carbon pole.
For alleviateing the utility model discloses probably damage that causes the carbon-point surface and for increasing this device fastening force on the carbon-point surface in installation, use, the one deck carbon fiber inner liner has been bonded at the internal surface of this device. The lining layer made of carbon fiber material has the characteristics of high modulus, good heat conduction, heat resistance and the like, in the carbon fiber friction material component, besides carbon fiber, a compound of graphite and carbon is used, and meanwhile, a binder is also subjected to carbonization treatment.
The utility model discloses righting that will modify nylon materials and scraping wax device adopts the nut to fix on carbon fiber sucker rod in succession with the interval that equals or is less than the beam-pumping unit stroke, makes to right and scrapes the difficult deformation that drops of wax device, simultaneously high temperature resistant, wear-resisting. The utility model discloses the radian of well centering and scraping the guiding gutter that constitutes between the wax piece is big, not only can realize 360 degrees within ranges seamless scraping wax, makes it and oil pipe's contact surface increase moreover, and the liquid stream is more unblocked.
The utility model discloses there is the disturbance to the liquid stream, makes the difficult deposit of wax to along with the up-and-down motion of carbon pole, the wax of oil pipe wall is continuous to be clear away, along with the oil stream takes out the well head, really accomplishes "the oil pumping more than, scrapes wax not, can reach the purpose of lasting paraffin removal. The utility model discloses the device has the function of rightting simultaneously and scraping the wax, uses in slim hole pumping well, and rightting and scraping the wax effect are showing very much equally.
The utility model discloses when playing rightting, paraffin removal wax control in the oil recovery well is used to the carbon-point, play the extension and examine pump cycle, alleviate workman's intensity of labour and reduce the effect to environment and oil reservoir pollution. Has obvious use effect and can generate obvious economic benefit and social benefit.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the carbon fiber continuous sucker rod after being installed.
Fig. 2 is a schematic structural view of the first split structure or the second split structure of the present invention.
Fig. 3 is a schematic view of the first split structure of the present invention.
Fig. 4 is a schematic view of the second split structure of the present invention.
Fig. 5 is a left side view of the present invention after assembly.
In the figure: 1-strengthening paraffin scraping sheet; 2-chamfering; 3-a nut; 4-body; 5-a carbon rod; 6-a central hole; 7-a carbon fiber inner liner; 8-a limiting groove; 9-limiting lug boss.
Detailed Description
The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 to 5, carbon fiber sucker rod is right and is scraped wax device includes body 4, is equipped with spiral helicine righting paraffin scraper 1 in the body 4, and the both ends of righting paraffin scraper 1 are equipped with chamfer 2, and righting paraffin scraper 1 forms the guiding gutter in body 4, wherein:
the body 4 is of a split structure and is provided with a first split structure and a second split structure;
the nuts 3 can be installed at the two ends of the split structure I and the split structure II after the split structure I and the split structure II are combined.
When carbon fiber sucker rod went into the well, just in advance 3 strings of the nut of a certain amount in carbon rod 5's outside, the in-process of going into the well, according to the design requirement at carbon rod 5's design position, split type the utility model discloses fold up on carbon rod 5, then screw up nut 3 at both ends, handle the utility model discloses firmly fix on carbon rod 5.
On the basis of the first embodiment, the utility model discloses still have following embodiment:
the aperture of the first split structure and the second split structure to the center hole 6 after the pair is smaller than the outer diameter of the carbon fiber continuous sucker rod, which can make the utility model discloses connect in the carbon fiber continuous sucker rod outside more firmly.
And the carbon fiber lining layers 7 are bonded in the involutory holes in the centers of the semicircles of the first split structure and the second split structure, and the carbon fiber lining layers 7 are lining cloth made of carbon fiber materials. Because the carbon fiber has characteristics such as high modulus, heat conduction is good, heat-resisting, add carbon fiber inner liner 7 and can alleviate the utility model discloses probably the damage that causes 5 surfaces of carbon pole in installation and use has also increased simultaneously the utility model discloses fastening force on the carbon pole surface.
Inner cavities at two ends of the first split structure and the second split structure are conical cavities, outer circles at two ends of the first split structure and the second split structure are provided with external threads, and the first split structure and the second split structure can be connected with the nut 3.
The split structure is characterized in that a limiting groove 8 or a limiting boss 9 can be arranged on the fitting surface on one side of the split structure, namely, the limiting groove 8 and the limiting boss 9 can be arranged on the fitting surface on one side of the split structure.
The involution face of two sides of components of a whole that can function independently structure can set up spacing recess 8 or spacing boss 9, can set up spacing recess 8 also can set up spacing boss 9 on the involution face of two sides of components of a whole that can function independently structure promptly.
And the limiting grooves 8 in the two joint surfaces of the first split structure and the second split structure are in accordance with the limiting bosses 9 in shape and can be matched with each other. The limiting groove 8 and the limiting boss 9 are connection positioning mechanisms of a first split structure and a second split structure, so that the connection and installation speed can be increased.
The spiral angle of the centralizing paraffin scraping plate 1 is set to be 60-95 degrees, and the centralizing paraffin scraping plate 1 is a spiral trapezoidal platy body with a wide root part and a narrow outer end part. The spiral angle of the centralizing paraffin scraping plate 1 is set to be any angle between 60 degrees and 95 degrees, such as angles of 73 degrees, 74 degrees, 75 degrees and 76 degrees; the angle of the chamfer angle 2 at the two ends of the centralizing paraffin scraping plate 1 is set between 35 degrees and 50 degrees. The end surfaces of the two ends of the centralizing paraffin scraping plate 1 are provided with chamfers 2 with any angle between 35 degrees and 50 degrees, such as 38 degrees, 39 degrees and 40 degrees.
The spiral angle of the centralizing paraffin scraping blade 1 is 80 degrees, and the angle is the optimal angle; the angle of the chamfer angle 2 is 45 degrees, the chamfer angles 2 arranged on the end surfaces of the two ends of the centralizing paraffin scraping plate 1 are 45 degrees, and the angle is the optimal angle.
The outer diameter of the carbon fiber continuous sucker rod centralizing and wax scraping device is 3-5 mm smaller than the inner diameter of an oil pipe in the oil production well; the carbon fiber continuous sucker rod centralizing and wax scraping device is fixed on the carbon fiber continuous sucker rod at the interval equal to or less than the stroke of the used well pumping unit. The outer diameter of the centralizing wax scraping device is 3mm-5mm smaller than the inner diameter of an oil pipe arranged in a used shaft, so that the contact area between the centralizing wax scraping device and the oil pipe is larger, and the wax is more thoroughly removed.
The embodiments described above are merely exemplary embodiments, but the present invention is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and teaching of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and modifications can be made, and equivalents can be substituted for elements thereof. Any modification, equivalent replacement, improvement and the like made within the spirit and the concept of the present invention should be included in the protection scope of the present invention. The scope of protection is therefore not limited to the description above.
Claims (10)
1. Carbon fiber sucker rod is right and is scraped wax device, including the body, be equipped with the heliciform in the body and right the paraffin scraper, the both ends of rightting the paraffin scraper are equipped with the chamfer, right the paraffin scraper and form guiding gutter, characterized by in the body:
the body is of a split structure and is provided with a first split structure and a second split structure;
nuts can be installed at the two ends of the split structure I and the split structure II after the split structure I and the split structure II are combined.
2. The carbon fiber continuous sucker rod centering paraffin scraping device as claimed in claim 1, wherein the aperture of the center hole after the first split structure and the second split structure are combined is smaller than the outer diameter of the carbon fiber continuous sucker rod.
3. The carbon fiber continuous sucker rod centering paraffin scraping device as claimed in claim 1 or 2, characterized in that carbon fiber inner liners are bonded in the semicircular center involutory holes of the first split structure and the second split structure.
4. The carbon fiber continuous sucker rod centering and paraffin scraping device as claimed in claim 3, wherein the inner cavities at both ends of the split structure I and the split structure II are both conical cavities, and the outer circles at both ends are both provided with external threads and can be connected with nuts.
5. The carbon fiber continuous sucker rod centering paraffin scraping device as claimed in claim 4, wherein a limiting groove or a limiting boss can be arranged on the mating surface of one side of the split structure.
6. The carbon fiber continuous sucker rod centering paraffin scraping device as claimed in claim 5, wherein the mating surface of two sides of the split structure can be provided with a limiting groove or a limiting boss.
7. The carbon fiber continuous sucker rod centering paraffin scraping device as claimed in claim 6, wherein the limiting grooves in the two mating surfaces of the first split structure and the second split structure are in accordance with the shape of the limiting boss and can be matched with each other.
8. The carbon fiber continuous sucker rod centering paraffin scraper device as claimed in claim 1, wherein the spiral angle of the centering paraffin scraper is set between 60 ° and 95 °; the angle of the chamfer is set between 35 and 50 degrees.
9. The carbon fiber continuous sucker rod centering paraffin scraper device of claim 8, wherein the spiral angle of the centering paraffin scraper is 80 °; the angle of the chamfer is 45 °.
10. The carbon fiber continuous sucker rod centralizing paraffin scraping device of claim 1, wherein the outer diameter of the carbon fiber continuous sucker rod centralizing paraffin scraping device is 3mm-5mm smaller than the inner diameter of an oil pipe in a used oil production well; the carbon fiber continuous sucker rod centralizing and wax scraping device is fixed on the carbon fiber continuous sucker rod at the interval equal to or less than the stroke of the used well pumping unit.
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| CN202022418324.0U CN213330949U (en) | 2020-10-27 | 2020-10-27 | Carbon fiber continuous sucker rod centralizing and paraffin scraping device |
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| CN202022418324.0U CN213330949U (en) | 2020-10-27 | 2020-10-27 | Carbon fiber continuous sucker rod centralizing and paraffin scraping device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969764A (en) * | 2021-11-12 | 2022-01-25 | 杭州乾景科技有限公司 | Cable-free paraffin removal robot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969764A (en) * | 2021-11-12 | 2022-01-25 | 杭州乾景科技有限公司 | Cable-free paraffin removal robot |
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