CN213116204U

CN213116204U - Rotary wear-resistant and corrosion-resistant three-cambered-surface sucker rod centralizer

Info

Publication number: CN213116204U
Application number: CN202022176597.9U
Authority: CN
Inventors: 鞠洪涛
Original assignee: Dezhou Yuanhao Petroleum Equipment Co ltd
Current assignee: Dezhou Yuanhao Petroleum Equipment Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-05-04
Anticipated expiration: 2030-09-24

Abstract

The utility model discloses a rotary wear-resistant and corrosion-resistant three-cambered-surface sucker rod centralizer, which relates to the technical field of oilfield mechanical equipment, and comprises a body and two left fixing belts, wherein the left fixing belt is arranged at the rear side of the body, and one left fixing belt is arranged at the rear side of the body, the rotary wear-resistant and corrosion-resistant three-cambered-surface sucker rod centralizer can change the dot-shaped or linear friction between a previous coupling and the centralizer and the inner wall of an oil pipe through a blade, a hanging groove and a centralizing sleeve, so that the resistance is reduced, the sheet-shaped or bulk-shaped paraffin is moved relatively to the inner wall of the oil pipe, the paraffin is separated from the inner wall of the oil pipe and is discharged along with well liquid, the pressure of a pump is reduced, the pump sticking is reduced, the pump checking period is prolonged, the yield and consumption are reduced, through the centralizing sleeve, a rotating ball, a fixed support, a fixed spring and an installation box, the sucker rod can automatically, prevent the eccentric wear of the sucker rod and the inner wall of the oil pipe.

Description

Rotary wear-resistant and corrosion-resistant three-cambered-surface sucker rod centralizer

Technical Field

The utility model relates to an oil field mechanical equipment technical field specifically is anticorrosive three cambered surface sucker rod centralizers of rotation type wear-resisting.

Background

The sucker rod centralizer is connected to the sucker rod, and has the outer diameter of the centralizing sleeve greater than that of the sucker rod coupling to centralize, high strength wear resisting material to contact with the oil pipe to abrade the centralizing body and reduce the abrasion of the oil pipe.

In the process of pumping oil, wax on the wall of an oil pipe and a sucker rod needs to be scraped in time, most of crude oil has high wax content, and in the process of lifting the crude oil from the well bottom to the ground, along with the reduction of temperature and pressure, paraffin can be separated out from the crude oil and adheres to the inner wall of the oil pumping pipe, so that the aperture of the oil pipe is reduced, the outer diameter of the oil pumping pipe is increased, the oil flow resistance is increased, an oil well can be blocked in serious cases, the phenomenon of pump blockage occurs, new conditions are generated along with the descending of various eccentric wear prevention tools, the ascending load of the oil pumping unit is increased, the descending resistance of the sucker rod is increased, the body is bent and collided, the load is increased, and the service life.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rotation type anticorrosive three cambered surface sucker rod centralizers wear-resistantly, through the blade, hang the groove and right the cover and can change in the past coupling and centralizer and the punctiform or the threadiness friction of oil pipe inner wall, be relative motion to oil pipe inner wall slice or nodular paraffin deposit when lightening the resistance, make paraffin deposit break away from the oil pipe inner wall and discharge along with well liquid, lighten the pump lifting pressure, reduce the card pump, the pump cycle is examined in the extension, the increase in production and consumption reduction, through right the cover, rotate the pearl, the fixed bolster, fixed spring and install bin, can the sucker rod reciprocating motion in, because of self axial autogiration and along with the crooked automatically regulated inclination of the wall of a well, guarantee to the utmost keep with the laminating degree of the wall of a well, prevent the eccentric wear of sucker rod and oil pipe inner.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the rotary type wear-resistant and corrosion-resistant three-cambered-surface sucker rod centralizer comprises a body and two left fixing bands, wherein one left fixing band is positioned at the rear side of the body, the right end of the body is in threaded connection with a centralizing sleeve, a limiting ring is in threaded connection between the inner walls of the centralizing sleeve, a fixing screw is fixedly connected to the bottom of the limiting ring, the front surfaces of the two left fixing bands are hinged to a right fixing band through hinges, three blades are fixedly connected to the outer surfaces of the two left fixing bands and the right fixing band, two installation boxes are fixedly connected to the outer surfaces of the two left fixing bands and the right fixing band, hydraulic oil is arranged in each of the four installation boxes, a bolt is fixedly connected to the bottoms of the two right fixing bands, push plates are respectively embedded between the inner walls of the four installation boxes in a sliding manner, and fixing supports are respectively fixedly connected to the top ends of, four the top of fixed bolster is all slided and is inlayed and be equipped with the rotation pearl, four the surface of fixed bolster is close to bottom department and all overlaps and is equipped with fixed spring, and four fixed spring's top all with the last inner wall fixed connection of four install bins.

In order to play spacing effect to controlling the fixed band, as the utility model discloses the rotation type is wear-resistant anticorrosive three cambered surface sucker rod centralizer is preferred, two limiting plates of the equal fixedly connected with in surface of body and spacing ring, and wherein four limiting plates match each other with left fixed band and right fixed band respectively.

In order to make the fixed band be connected inseparabler with body and spacing ring, as the utility model discloses the rotation type is wear-resistant anticorrosive three cambered surface sucker rod centralizer is preferred, all bind between the inner wall of left side fixed band and right fixed band and be provided with the sealing washer, and closely laminate with the surface of body and spacing ring respectively between the inner wall of two sealing washers.

In order to increase the effect that the blade scraped wax, as the utility model discloses the rotation type is wear-resistant anticorrosive three cambered surface sucker rod centralizer is preferred, six a plurality of grooves of scraping have all been seted up to the surface of blade.

In order to realize the function that the install bin antidetonation decompressed, conduct the utility model discloses the rotation type is wear-resistant anticorrosive three cambered surface sucker rod centralizer is preferred, four the bottom of push pedal is all binded and is provided with the rubber pad, and closely laminates between the surface of four rubber pads and the inner wall of four install bins.

In order to realize the function of quick installation fixed band, as the utility model discloses the rotation type is wear-resistant anticorrosive three cambered surface sucker rod centralizer is preferred, two the fixed slot has all been seted up to the bottom of left side fixed band, and the equal fixedly connected with extrusion spring of the upper and lower inner wall of four fixed slots, four the one end that extrusion spring is close to each other all inlays and is equipped with the steel ball, and four steel balls match each other with the bottom of two bolts respectively.

The utility model provides a rotation type anticorrosive three cambered surface sucker rod centralizers that wear-resistants. The method has the following beneficial effects:

(1) the rotary wear-resistant and corrosion-resistant three-cambered-surface sucker rod centralizer has the advantages that the dotted or linear friction between the conventional coupling and centralizer and the inner wall of an oil pipe can be changed through the blades, the hanging grooves and the centralizing sleeve, the resistance is reduced, the flaky or nodular paraffin deposit on the inner wall of the oil pipe moves relatively at the same time, the paraffin deposit is separated from the inner wall of the oil pipe and is discharged along with well fluid, the pressure of a pump is reduced, the pump clamping is reduced, the pump detection period is prolonged, and the yield and consumption are increased.

(2) This rotation type anticorrosive three cambered surface sucker rod centralizer wear-resistants, through right the cover, rotate pearl, fixed bolster, fixed spring and install bin, can the sucker rod reciprocating motion in, because of self axial autogiration and along with the crooked automatically regulated inclination of the wall of a well, guarantee to keep the laminating degree with the wall of a well to the at utmost, prevent the eccentric wear of sucker rod and oil pipe inner wall.

Drawings

Fig. 1 is a side cross-sectional view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a front view half-section view of the utility model.

In the figure: 1. a body; 2. a centralizing sleeve; 3. a limiting ring; 4. a left securing strap; 5. a right fixing band; 6. a blade; 7. scraping the groove; 8. installing a box; 9. rotating the beads; 10. fixing a bracket; 11. fixing the spring; 12. pushing the plate; 13. a rubber pad; 14. hydraulic oil; 15. a bolt; 16. a compression spring; 17. steel balls; 18. fixing grooves; 19. a set screw; 20. a seal ring; 21. and a limiting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a rotary wear-resistant and corrosion-resistant three-cambered-surface sucker rod centralizer comprises a body 1 and left fixing bands 4, wherein the number of the left fixing bands 4 is two, one of the left fixing bands 4 is positioned at the rear side of the body 1, the right end of the body 1 is in threaded connection with a centralizing sleeve 2, a limiting ring 3 is in threaded connection between the inner walls of the centralizing sleeve 2, fixing screws 19 are fixedly connected with the bottom of the limiting ring 3, the front surfaces of the two left fixing bands 4 are hinged with a right fixing band 5 through hinges, the outer surfaces of the two left fixing bands 4 and the right fixing band 5 are fixedly connected with three blades 6, the outer surfaces of the two left fixing bands 4 and the right fixing band 5 are fixedly connected with two installation boxes 8, hydraulic oil 14 is arranged inside the four installation boxes 8, the bottoms of the two right fixing bands 5 are fixedly connected with bolts 15, and push plates 12 are slidably embedded between, and the equal fixedly connected with fixed bolster 10 in top of four push pedal 12, the top of four fixed bolsters 10 is all slided and is inlayed and is equipped with rotation pearl 9, and the surface of four fixed bolsters 10 is close to bottom department and all overlaps and be equipped with fixed spring 11, and the top of four fixed spring 11 all with the last inner wall fixed connection of four install bins 8.

In this embodiment: the centering sleeve 2 adopts nickel-based alloy spray welding, is subjected to high-frequency heating cladding, presents a mirror surface effect after being polished and polished on the surface, has relative motion resistance with the inner wall of an oil pipe which is one thirtieth that of a common sucker rod coupling and a centering device, has the self hardness HRC of more than or equal to 65, automatically rotates in the axial direction and keeps the maximum fitting degree along with the bending change of the oil pipe in the reciprocating motion of the sucker rod and the inner wall of the oil pipe, always keeps surface contact with the inner wall of the oil pipe, changes the point-like or linear friction of the common coupling and the centering device with the inner wall of the oil pipe, prolongs the service life of the oil pipe and the sucker rod to the maximum extent, can directly connect the sucker rod due to the self structure of the centering device body 1, saves the prior coupling and centering device for connecting hidden danger of a connecting point, adopts high-quality 35CrMo alloy steel for, simple to operate, alleviate installation operation intensity, wholly adopt the bonderizing technology, guarantee to dismantle the operation in-process screw thread at a lot of and do not hinder the knot, the thread gluing, manifold cycles uses, can fix body 1 and righting cover 2 through spacing ring 3 and set screw 19, can scrape down the waxing of well inner wall through blade 6, through install bin 8, fixed bolster 10, push pedal 12, fixing spring 11 and hydraulic oil 14, can be according to the crooked automatically regulated inclination of the wall of a well, through rotating pearl 9, can reduce the frictional force of sucker rod centralizer and well.

Specifically, the outer surfaces of the body 1 and the limiting ring 3 are fixedly connected with two limiting plates 21, and the four limiting plates 21 are respectively matched with the left fixing belt 4 and the right fixing belt 5.

In this embodiment: the distance between two limiting plates 21 is just the same as the width of left fixed band 4 and right fixed band 5, can install left fixed band 4 and right fixed band 5 fast.

Specifically, the inner walls of the left fixing band 4 and the right fixing band 5 are both provided with sealing rings 20 in a bonding manner, and the inner walls of the two sealing rings 20 are respectively tightly attached to the outer surfaces of the body 1 and the limiting ring 3.

In this embodiment: through sealing washer 20, reduce the space between left fixed band 4 and right fixed band 5 and body 1 and the spacing ring 3, use left fixed band 4 and right fixed band 5 stable fix on body 1 and spacing ring 3.

Specifically, a plurality of scraping grooves 7 are formed in the outer surfaces of the six blades 6.

In this embodiment: through scraping groove 7, can increase blade 6 hang the wax function, use sucker rod centralizer can clear up the wax on the oil pipe inner wall fast.

Specifically, the bottoms of the four push plates 12 are respectively provided with rubber pads 13 in an adhering manner, and the outer surfaces of the four rubber pads 13 are tightly attached to the inner walls of the four installation boxes 8.

In this embodiment: the sealing performance of the push plate 12 can be increased by the rubber pad 13. The interior of the installation box 8 is in a vacuum state, and the function of shock resistance and pressure reduction is achieved.

Specifically, fixed slot 18 has all been seted up to the bottom of two left fixed bands 4, and the equal fixedly connected with extrusion spring 16 of the upper and lower inner wall of four fixed slots 18, and the one end that four extrusion spring 16 are close to each other all inlays and is equipped with steel ball 17, and four steel balls 17 match each other with the bottom of two bolt 15 respectively.

In this embodiment: the extrusion spring 16 is fixed through the fixing groove 18, and the bolt 15 can be fixed through the steel ball 17, so that a user can install and detach the left fixing band 4 and the right fixing band 5 quickly.

When in use, a user firstly screws the centering sleeve 2 on the body 1, screws the limit ring 3 on the body 1, fixes the limit ring 3 and the body 1 through the fixing screw 19, then clamps the left fixing band 4 and the right fixing band 5 between the limit plates 21, at the moment, the bolt 15 enters the fixing groove 18, enables the bolt 15 to reach the top of the fixing groove 18 through extruding the steel ball 17 and the extruding spring 16, drives the steel ball 17 to rebound through the extruding spring 16, fixes the steel ball 17 at the top of the bolt 15, places the sucker rod centralizer in a well after the installation, enables the blade 6 and the scraping groove 7 to contact with the inner wall of the well for waxing through the movement of the sucker rod centralizer, enables the waxing to be separated from the inner wall of the oil pipe and discharged along with well liquid, reduces the friction force of the sucker rod centralizer through rotating the ball 9, and enables the sucker rod centralizer to automatically adjust the inclination angle along with the bending of the well wall, at this moment, the fixed support 10 is extruded by the rotating balls 9, the rubber pads 13 on the push plate 12 are used for extruding hydraulic oil 14 in the installation box 8, and the sucker rod centralizer is ensured to keep the fitting degree with the well wall to the maximum extent through quick rebound of the fixed springs 11, so that eccentric wear of the sucker rod and the inner wall of the oil pipe is prevented.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Rotation type anti-corrosion three cambered surface sucker rod centralizers that wear-resistants, including body (1) and left fixed band (4), left side fixed band (4) are provided with two altogether, and one of them left fixed band (4) area is located the rear side of body (1), its characterized in that: the right end of the body (1) is in threaded connection with a centering sleeve (2), a limiting ring (3) is in threaded connection between the inner walls of the centering sleeve (2), fixing screws (19) are fixedly connected to the bottom of the limiting ring (3), the front surfaces of the two left fixing bands (4) are hinged to a right fixing band (5) through hinges, three blades (6) are fixedly connected to the outer surfaces of the two left fixing bands (4) and the right fixing band (5), two installing boxes (8) are fixedly connected to the outer surfaces of the two left fixing bands (4) and the right fixing band (5), hydraulic oil (14) is arranged inside each of the four installing boxes (8), a bolt (15) is fixedly connected to the bottom of the two right fixing bands (5), push plates (12) are slidably embedded between the inner walls of the four installing boxes (8), and a fixing support (10) is fixedly connected to the top ends of the four push plates (12), four the top of fixed bolster (10) is all slided and is inlayed and be equipped with rotation pearl (9), four the surface of fixed bolster (10) is close to bottom department and all overlaps and be equipped with fixed spring (11), and the top of four fixed spring (11) all with the last inner wall fixed connection of four install bins (8).

2. The rotary type wear-resistant and corrosion-resistant three-arc-surface sucker rod centralizer according to claim 1, characterized in that: the equal fixedly connected with of surface of body (1) and spacing ring (3) two limiting plate (21), and wherein four limiting plate (21) match each other with left fixed band (4) and right fixed band (5) respectively.

3. The rotary type wear-resistant and corrosion-resistant three-arc-surface sucker rod centralizer according to claim 1, characterized in that: sealing rings (20) are respectively bonded between the inner walls of the left fixing band (4) and the right fixing band (5), and the inner walls of the two sealing rings (20) are respectively tightly attached to the outer surfaces of the body (1) and the limiting ring (3).

4. The rotary type wear-resistant and corrosion-resistant three-arc-surface sucker rod centralizer according to claim 1, characterized in that: the outer surfaces of the six blades (6) are provided with a plurality of scraping grooves (7).

5. The rotary type wear-resistant and corrosion-resistant three-arc-surface sucker rod centralizer according to claim 1, characterized in that: the bottoms of the four push plates (12) are respectively provided with rubber pads (13) in an adhesive mode, and the outer surfaces of the four rubber pads (13) are tightly attached to the inner walls of the four installation boxes (8).

6. The rotary type wear-resistant and corrosion-resistant three-arc-surface sucker rod centralizer according to claim 1, characterized in that: two fixed slot (18) have all been seted up to the bottom of left side fixed band (4), and the equal fixedly connected with extrusion spring (16) of the upper and lower inner wall of four fixed slot (18), four steel ball (17) are all inlayed to the one end that extrusion spring (16) are close to each other, and four steel ball (17) match each other with the bottom of two bolt (15) respectively.