CN218563600U - Extrusion full-coating sucker rod - Google Patents

Abstract

The utility model relates to an extrusion full cladding sucker rod, including sucker rod base member and metal sleeve, sucker rod base member mid portion is the body of rod, both ends divide into the pole head and both ends are the symmetry setting, the pole head includes screwed joint, circular bead and spanner side, the anticorrosive non-metallic material layer of surface cladding of the body of rod, metal sleeve closely laminate in through the extrusion circular bead and spanner side's surface and complete cladding circular bead and spanner side and cladding part anticorrosive non-metallic material layer and metal sleeve surface with the shape that circular bead and spanner side corresponding position department formed with the shape of circular bead and spanner side surface is the same. The utility model discloses can reduce the cost and the work load of machining, the site operation of being convenient for simultaneously promotes the operating efficiency.

Description

Extrusion full-coating sucker rod

Technical Field

The utility model relates to an oil drilling field, concretely relates to extrusion full cladding sucker rod.

Background

The sucker rod is an important component required in the petroleum drilling and production process, most oil fields in China enter the middle and later stages of development at present, the comprehensive water content is higher and higher, production increasing measures such as water injection and the like are often adopted, and the reinjection water of the oil fields is basically the direct reinjection of sewage, so that the working environment of the sucker rod is very bad. The well fluid with high mineralization degree contains various corrosive media, corrosive microorganisms and the like, and is particularly rich in Cl ^- The corrosion rate of the sucker rod is greatly improved. Meanwhile, associated gas contains CO ₂ 、H ₂ And S and other corrosive gases make the well fluid weakly acidic. As is well known, cl remediation ^- 、CO ₂ And H ₂ S corrosion is always a worldwide problem in oil production engineering. And the friction between the sucker rod and the inner wall of the oil pipe can generate heat energy to activate the surface of the sucker rod, and the corrosion rate of the surface of the sucker rod can be greatly accelerated under the action of corrosive output liquid. In addition, the influence of sand content, the influence of wax precipitation and scaling of an oil well and the influence of the viscosity of produced liquid can promote the corrosion and eccentric wear of the surface of the sucker rod. In short, the sucker rod is subjected to the combined action of alternating load, oil, gas, water and corrosive media for a long time, and the sucker rod is subjected to eccentric wear, so that the sucker rod becomes equipment with the lowest reliability in mechanical oil extraction, and a disconnection accident is easy to occur.

Studies have shown that the produced fluid changes phase from water-in-oil to oil-in-water when the well contains more than 74.02% water. The surface of the pipe rod loses the protection of crude oil, produced water directly contacts metal, and the corrosion speed is increased. The lubricant is changed from crude oil to produced water, the lubrication effect of the crude oil is lost, the specific gravity is increased while the water content of well fluid is increased, the lubrication coefficient of the contact surface of a pipe rod is greatly reduced, the uplink load is obviously increased, the downlink resistance is invisibly increased, the stress condition and the deformation degree of the sucker rod are aggravated, the friction resistance is increased, and the abrasion of the pipe rod is accelerated. The eccentric wear of the pipe rod can generate heat energy to activate the surface of the pipe rod, and under the action of strong corrosive output liquid, the eccentric wear part is preferentially corroded to increase the surface roughness and the wear resistance, so that the wear is more serious. In addition, the influence of sand content, the influence of wax precipitation and scaling of an oil well and the influence of the viscosity of produced liquid can promote the corrosion and eccentric wear of the surface of the sucker rod. Corrosion and mechanical wear do not simply add up, but interact, promoting each other, with the combination being more damaging. The oil field is widely applied to eccentric wear prevention measures such as a centralizer, an anti-wear pair, a weighting rod and the like, and although the service life of a pipe rod can be prolonged, the problems can not be thoroughly solved.

Aiming at the problems of corrosion and wear resistance, the conventional methods such as electroplating or chemical plating are mainly adopted to process chrome-plated sucker rods, nickel-plated sucker rods and tungsten-plated sucker rods, and semi-coated corrosion-resistant wear-resistant sucker rods, fully-coated corrosion-resistant wear-resistant sucker rods and the like.

The conventional wear-resistant and corrosion-resistant coating of the sucker rod is limited by the size-diameter ratio of the rod head to the rod body and the complex shape of the upset sucker rod, the bonding strength of the coating and a substrate is low, and when the coating is used in the complex well condition environment, the coating is easy to peel, fall off and wear, so that a corrosion-resistant and wear-resistant short plate is formed, the effect is not very ideal, and the cost is high. The anti-corrosion wear-resistant polish rod disclosed in the chinese utility model patent application CN108798537A comprises a rod body, wherein a first external thread joint and a second external thread joint are respectively arranged at two ends of the rod body, an anti-corrosion wear-resistant alloy coating is arranged at the outer side of the rod body, and a cathode protection anti-corrosion alloy coating is arranged at the non-upset part of the rod body, which is close to the second external thread joint; the utility model discloses a novel anticorrosive spray welding sucker rod that wear-resistants again as chinese utility model patent application CN108798538A discloses, the electric iron comprises a rod body, the one end of the body of rod outwards has connected gradually first pole head upset portion and first pole head screw thread section, the other end of the body of rod outwards has connected gradually second pole head upset portion and second pole head screw thread section, the body of rod with be equipped with first circular arc transition zone and first flange between the first pole head upset portion in proper order, first pole head upset portion with first pole head screw thread section is equipped with first bearing surface circular bead and first off-load groove in proper order, the body of rod with be equipped with second circular arc transition zone and second flange between the second pole head upset portion in proper order, second pole head upset portion with second pole head screw thread section is equipped with second bearing surface circular bead and second off-load groove in proper order, the body of rod first pole head upset portion with the outside of second pole head upset portion is equipped with anticorrosive alloy coating. In both of the foregoing patent applications, the corrosion resistance and wear resistance of the sucker rod are enhanced by the plating layer, but the problems of low bonding strength between the plating layer and the substrate, easy falling off and abrasion are also inevitable.

The spray welding coating of the semi-coating anticorrosion and wear-resistant sucker rod is greatly improved in bonding strength with a base body, and has good anticorrosion and wear-resistant performances, but secondary solid melting strengthening is needed after the spray welding of the anticorrosion alloy coating on the rod head, and the performance of the base body of the coating anticorrosion and wear-resistant sucker rod head is substantially reduced at high temperature, so that the overall anticorrosion and wear-resistant performances and reliability of the sucker rod are substantially reduced, and the cost is high.

The fully-coated sucker rod has good corrosion resistance and wear resistance by fully coating the rod head and the rod body part. An improved fully-coated sucker rod disclosed in Chinese utility model patent CN210564384U comprises a sucker rod base body and a clamp, wherein both ends of the sucker rod base body comprise a shoulder and a rod body from outside to inside, and the shoulder is provided with a thrust stop table and a clamp thread from outside to inside for tightly sleeving the clamp; the connecting part of the shoulder and the rod body comprises a wrench side and a flange, the diameters of the wrench side and the flange are reduced, the diameter of the shoulder is larger than that of the flange, and the connecting part of the shoulder and the rod body and the outer wall of the rod body are provided with an anticorrosive polymer plastic layer; the clamp comprises a joint, and a thrust port and an internal thread are arranged on the inner ring of the joint corresponding to the shoulder, so that the clamp is tightly attached to the sucker rod base body; the anticorrosive polymer plastic layer of parcel forms the passageway of moulding plastics between sucker rod base member and the clamp inner chamber, and the high pressure is moulded plastics and is had the polymer plastic. The polymer plastic that aforementioned patent was moulded plastics through high pressure in clamp and the polymer plastic layer and the clamp forms the full cladding to the sucker rod, and the anticorrosive wear resistance of this patent is good, nevertheless need carry out thrust platform and clamp screw thread's processing to the circular bead of sucker rod base member, carry out thrust mouth and internal screw thread processing to the clamp and carry out the high pressure to the clamp inner chamber and mould plastics, and the increase of manufacturing procedure makes the cost and the work load of processing all corresponding increase. The novel sucker rod disclosed in the chinese utility model patent CN212454282U comprises a sucker rod base body and a threaded sleeve, wherein two ends of the sucker rod base body are symmetrically arranged, and the sucker rod base body is provided with a first external thread joint, an unloading groove, a second external thread shoulder, a wrench square and a rod body in sequence from the end part to the center; the threaded sleeve is sleeved on the second external thread shoulder part of the sucker rod base body and partially wraps the rod body; the end part of the second external thread shoulder, which is abutted against the threaded sleeve, is provided with a thrust stop table and a thrust port respectively; the outer wall of the rod body is coated with an anticorrosive polymer plastic layer, and the outer surface of the threaded sleeve is provided with an anticorrosive wear-resistant coating; the novel sucker rod disclosed in the Chinese utility model patent CN212454283U comprises a sucker rod base body and a conical sleeve, wherein two ends of the sucker rod base body are symmetrically arranged, and the sucker rod base body is sequentially provided with an external thread joint, an unloading groove, a conical shoulder, a wrench square and a rod body from the end part to the center; the conical sleeve is sleeved at the conical shoulder part of the sucker rod substrate and partially covers the rod body; the end parts of the conical shoulders, which are abutted to the conical sleeves, are respectively provided with a conical thrust platform and a conical thrust opening, the outer wall of the rod body is coated with an anticorrosive polymer plastic layer, and the outer surface of each conical sleeve is provided with an anticorrosive wear-resistant coating. The two aforementioned patents are similar to CN210564384U, both of which coat the rod head part through the hoop/sleeve and coat the rod body through the polymer plastic layer, but there is also a need to process the sleeve and the shoulder with threads, thrust ports and thrust table, thereby increasing the workload and cost of machining. In addition, standard API sucker rod design square wrench side does not have the direction to select for the field operation, arbitrary direction all can use the spanner to adjust well fast, and aforementioned chinese utility model patent CN210564384U, CN212454282U, CN212454283U, because the outer clamp/sleeve that has wrapped of spanner side, and clamp/telescopic appearance is circular, mill two one hundred eighty degrees symmetrical spanner side draw-in grooves on clamp/telescopic surface for the convenience of field operation, directional selection has then appeared from this, inconvenience has been caused for the field operation, and be subject to the wall thickness of clamp/sleeve, the milling depth of spanner side groove is very little, and then the efficiency of field operation has been influenced.

In view of this, the utility model provides an extrude full cladding sucker rod through the improvement to sleeve structure and the improvement of sleeve and pole head cladding mode with the technical problem of the machining cost and the work gauge height of solving among the prior art full cladding sucker rod because of need processing screw thread, thrust platform and thrust mouth lead to the pole head part of having guaranteed full cladding sucker rod still forms API standard four arris spanner side, thereby has promoted field operation's efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an extrusion full cladding sucker rod to solve exist among the prior art not enough, the utility model discloses the technical problem who solves realizes through following technical scheme.

The utility model provides an extrusion full cladding sucker rod, includes sucker rod base member and metal sleeve, its improvement lies in: the utility model discloses a sucker rod, including sucker rod base member, the rod head of sucker rod base member intermediate part is the body of rod, both ends divide into the pole head and both ends are the symmetry setting, the pole head includes threaded joint, circular bead and spanner side, the surface coating anticorrosive non-metallic material layer of the body of rod, metal sleeve through the extrusion closely laminate in the surface of circular bead and spanner side and complete cladding circular bead and spanner side and the anticorrosive non-metallic material layer of cladding part and metal sleeve surface with the shape that circular bead and spanner side corresponding position department formed with the shape of circular bead and spanner side surface is the same.

Preferably, the metal sleeve is tightly attached to the outer surface of the shoulder and the wrench side by hot extrusion and completely covers the shoulder and the wrench side.

Preferably, the metal sleeve is coated with a part of the anti-corrosion non-metal material layer by cold extrusion.

Preferably, the metal sleeve is a stainless steel sleeve.

Preferably, the end surface of said metal sleeve adjacent to the end of said base of said sucker rod is flush with the end surface of said shoulder adjacent to the end of said base of said sucker rod.

Preferably, the anticorrosive non-metallic material layer is an anticorrosive polymer plastic layer.

Preferably, the inner wall of the metal sleeve is provided with at least one groove at a position close to the end part.

Preferably, an unloading groove is formed between the threaded joint and the shoulder.

Preferably, a flange is arranged between the wrench side and the rod body, the metal sleeve is closely attached to the outer surface of the flange through hot extrusion and completely covers the flange, and the shape formed at the position, corresponding to the flange, of the outer surface of the metal sleeve is the same as the shape of the flange.

Preferably, the threaded joint has an outer diameter smaller than an outer diameter of the shoulder, the flange has an outer diameter equal to the outer diameter of the shoulder, and the wrench has an outer diameter smaller than the outer diameters of the shoulder and the flange.

The utility model discloses a form anticorrosive non metallic material layer and utilize metal sleeve to carry out cladding and the anticorrosive non metallic material layer of cladding part to the pole head part through the external surface of the rod to it is anticorrosive to form the full cladding of single sucker rod. A plurality of sucker rods are connected through butt joints such as standard spray welding couplings and threaded joints, extrusion sealing between the butt joints and the metal sleeves is achieved through pretightening force, and corrosive media can be effectively prevented from entering the interior of the rod head. Compared with the prior art, the utility model discloses an extrusion metal sleeve realizes circular bead, spanner side and flange and the anticorrosive non-metallic material layer of cladding part of cladding pole head to need not to process the screw thread, thrust platform and thrust mouth, therefore reduced the cost and the work load of machining, simultaneously because metal sleeve's surface forms with the circular bead, spanner side and the same shape of flange shape, still remain the four arris spanner side structures of API standard on the metal sleeve promptly, thereby the field operation of being convenient for has promoted the operating efficiency.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic structural view of the sucker rod base body of the present invention;

FIG. 3 is a schematic structural view of the metal sleeve according to the present invention (the metal sleeve shown in the figure is a schematic structural view when it is not extruded and coated on the sucker rod substrate);

the reference numbers in the drawings are, in order: 1. the sucker rod comprises a sucker rod base body, 11 parts of threaded joints, 12 parts of unloading grooves, 13 parts of shoulders, 14 parts of wrench sides, 15 parts of flanges, 16 parts of rod bodies, 2 parts of metal sleeves, 21 parts of grooves, 3 parts of anticorrosive non-metal material layers.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1:

referring to fig. 1 to 3, the extrusion full-coating sucker rod comprises a sucker rod base body 1 and a metal sleeve 2, and is improved in that: the sucker rod is characterized in that the middle of the sucker rod base body 1 is a rod body 16, two end portions are rod heads, two ends of the sucker rod base body are symmetrically arranged, each rod head comprises a threaded joint 11, a shoulder 13 and a wrench side 14, the outer surface of the rod body 16 is coated with an anticorrosive non-metal material layer 3, the metal sleeve 2 is tightly attached to the outer surfaces of the shoulders 13 and the wrench side 14 through extrusion and completely coats the shoulders 13 and the wrench side 14 and coats part of the anticorrosive non-metal material layer 3, and the outer surface of the metal sleeve 2 and the corresponding positions of the shoulders 13 and the wrench side 14 form the same shape as that of the outer surfaces of the shoulders 13, the wrench side 14 and the flange 15.

Further, a relief groove 12 is provided between the threaded joint 11 and the shoulder 13.

Further, a flange 15 is arranged between the wrench end 14 and the rod body 16, the metal sleeve 2 is tightly attached to the outer surface of the flange 15 through extrusion and completely covers the flange 15, and the shape formed at the position, corresponding to the flange 15, of the outer surface of the metal sleeve 2 is the same as the shape of the flange 15.

In the embodiment, two ends of the sucker rod substrate 1 are symmetrically arranged, so that the sucker rod substrate is convenient to process and produce; secondly, for convenient assembling, the structures at both ends are the same, and the assembly does not need to appoint the direction, and is time-saving and labor-saving. After the threaded joint 11 is in threaded connection with a butt joint (not shown in the figure), the butt joint is tightly abutted against the metal sleeve 2, the sealing effect is realized through the pretightening force, and the stress on the sucker rod base body 1 can be reduced by arranging the unloading groove 12. The outer surface of the rod body 16 is coated with the anti-corrosion non-metallic material layer 3, so that corrosion of a corrosion medium to the rod body 16 can be prevented. The metal sleeve 2 completely covers the shoulder 13, the wrench end 14 and the flange 15, and the shoulder 13, the wrench end 14 and the flange 15 can be sealed, so that the shoulder 13, the wrench end 14 and the flange 15 are prevented from being corroded by a corrosive medium. The metal sleeve 2 covers part of the anti-corrosion non-metal material layer 3, so that the two are hermetically connected, and the sucker rod substrate 1 can be prevented from being corroded by corrosive media.

It should be noted that, in this embodiment, after the metal sleeve 2 is arranged to cover the shoulders 13, the wrench sides 14 and the flanges 15, the shape formed on the outer surface of the metal sleeve 2 is the same as the shape of the outer surfaces of the shoulders 13, the wrench sides 14 and the flanges 15, because the arrangement of the wrench sides 14 on the sucker rod substrate 1 is convenient for field operation, the four-edge wrench side of the standard API sucker rod design is that there is no direction selection for field operation, and any direction can be aligned quickly by using a wrench, while the fully-covered sucker rod in the prior art mostly uses a circular-shaped hoop/sleeve to cover the rod head portion of the sucker rod, which makes it impossible to effectively correct the sucker rod during field operation. In the embodiment, the shape of the outer surface of the metal sleeve 2 is consistent with the shape of the rod head of the sucker rod by extruding, so that the fully-coated sucker rod still keeps the structure of the square of the API standard square wrench, the field operation is facilitated, and the operation efficiency is improved.

The embodiment forms the full-coating anticorrosion to the single sucker rod by forming the anticorrosion non-metallic material layer 3 on the outer surface of the rod body 16, coating the rod head part by using the metal sleeve 2 and coating the partial anticorrosion non-metallic material layer 3. A plurality of sucker rods are connected with each other through butt joints such as standard spray welding couplings and threaded joints 11, extrusion sealing between the butt joints and the metal sleeve 2 is achieved through pretightening force, and corrosive media can be effectively prevented from entering the interior of the rod head.

Compared with the prior art, this embodiment realizes cladding circular bead 13, spanner side 14 and flange 15 of pole head and cladding part anticorrosive non-metallic material layer 3 through extrusion metal sleeve 2 to need not to process screw thread, thrust platform and thrust mouth, therefore reduced the cost and the work load of machine tooling, simultaneously because the surface of metal sleeve 2 forms the shape the same with circular bead 13, spanner side 14 and flange 15 shape, still remain API standard four arris spanner side structure on the metal sleeve 2 promptly, thereby the field operation of being convenient for, the operating efficiency has been promoted.

Further, the end surface of the metal sleeve 2 adjacent to the end of the sucker rod base body 1 is flush with the end surface of the shoulder 13 adjacent to the end of the sucker rod base body 1.

In this embodiment, the end face of the metal sleeve 2 is flush with the end face of the shoulder 13, and after the butt joint is tightly abutted to the metal sleeve 2, a sealing effect can be achieved through a pretightening force, so that corrosion of a corrosive medium to the unloading groove 12, the threaded joint 11 and the inside of the butt joint is prevented.

Further, the anti-corrosion non-metallic material layer 3 is an anti-corrosion polymer plastic layer.

The anticorrosive polymer plastic layer of this embodiment can form the coating on the body of rod 16 surface through processes such as heating, middle and low pressure injection molding, solidification to polymer plastic. The polymer plastic has high chemical stability, high toughness, certain wear resistance and self-lubricating property, and has the advantages of high mechanical strength, high toughness, high impact resistance, high fatigue resistance, smooth surface, low friction coefficient, high heat resistance (long-term use at 180 ℃), high corrosion resistance, light weight, easy forming and reliable dimensional stability. The rod body 16 of the sucker rod substrate 1 is coated with the anti-corrosion polymer plastic layer, so that the rod body 16 and a corrosion medium can be isolated, the rod body 16 is prevented from being damaged by the corrosion medium, and the fatigue strength of the rod body 16 is enhanced.

Furthermore, at least one groove 21 is formed on the inner wall of the metal sleeve 2 at a position close to the end portion. In this embodiment, the setting of recess 21 can extrude anticorrosive non-metallic material layer 3 when 2 cladding parts of metal sleeve anticorrosive non-metallic material layer 3 make the two sealing connection, has both played sealed effect and has guaranteed its fastness again.

Further, the outer diameter of the threaded joint 11 is smaller than the outer diameter of the shoulder 13, the outer diameter of the flange 15 is equal to the outer diameter of the shoulder 13, and the outer diameter of the wrench side 14 is smaller than the outer diameters of the shoulder 13 and the flange 15.

Example 2:

on the basis of embodiment 1, the metal sleeve 2 is tightly attached to the outer surfaces of the shoulder 13 and the wrench end 14 by hot extrusion and completely covers the shoulder 13 and the wrench end 14, the metal sleeve 2 is tightly attached to the outer surface of the flange 15 by hot extrusion and completely covers the flange 15, and the outer surface of the metal sleeve 2 and the outer surface of the flange 15 are formed in the same shape as the flange 15.

In this embodiment, the metal sleeve 2 is heated first during hot extrusion, and then the metal sleeve 2 is extruded by the press machine to ensure that the metal sleeve 2 is closely attached to the outer surfaces of the shoulder 13, the wrench side 14 and the flange 15 and completely covers the shoulder 13, the wrench side 14 and the flange 15, so as to seal the shoulder 13, the wrench side 14 and the flange 15 to prevent the shoulder 13, the wrench side 14 and the flange 15 from being corroded by the corrosive medium.

Further, the metal sleeve 2 is coated with a part of the anti-corrosion non-metal material layer 3 through cold extrusion.

In this embodiment, after the metal sleeve 2 is extruded to be closely attached to the outer surfaces of the shoulder 13, the wrench side 14 and the flange 15 and completely cover the shoulder 13, the wrench side 14 and the flange 15, the part of the metal sleeve 2 covering the anti-corrosion non-metal material layer 3 is subjected to cold extrusion, so that the part is deformed, necked and then is tightly pressed on the anti-corrosion non-metal material layer 3, thereby realizing sealing connection to prevent corrosion medium from corroding the sucker rod base body 1.

Further, the metal sleeve 2 is a stainless steel sleeve.

In this embodiment, stainless steel is selected for the sleeve because the stainless steel sleeve has excellent corrosion resistance. In order to enhance the corrosion resistance of the clamp/sleeve in the prior art, nickel-based alloy powder is generally sprayed and welded on the outer surface of the clamp/sleeve, so that the clamp/sleeve has comprehensive properties of wear resistance, corrosion resistance, friction resistance reduction and the like, and the alloy powder does not need to be sprayed and welded after a stainless steel sleeve is adopted.

It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or otherwise described herein.

Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may also be oriented in other different ways, such as by rotating it 90 degrees or at other orientations, and the spatially relative descriptors used herein interpreted accordingly.

In the above detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like numerals typically identify like components, unless context dictates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides an extrusion full cladding sucker rod, includes sucker rod base member (1) and metal sleeve (2), its characterized in that: the utility model discloses a sucker rod, including sucker rod base member (1), the sucker rod base member (1) mid portion is the body of rod (16), both ends are pole head and both ends and are the symmetry setting, the pole head includes screwed joint (11), circular bead (13) and spanner side (14), the surface cladding anticorrosive non-metallic material layer (3) of the body of rod (16), metal sleeve (2) through the extrusion closely laminate in the surface and the complete cladding of circular bead (13) and spanner side (14) and cladding part anticorrosive non-metallic material layer (3) and metal sleeve (2) surface with the shape that circular bead (13) and spanner side (14) corresponding position department formed with the shape of circular bead (13) and spanner side (14) surface is the same.

2. The extruded fully clad sucker rod of claim 1 wherein: the metal sleeve (2) is tightly attached to the outer surfaces of the shoulder (13) and the wrench side (14) through hot extrusion and completely covers the shoulder (13) and the wrench side (14).

3. The extruded fully coated sucker rod of claim 1 wherein: the metal sleeve (2) is wrapped with a part of the anti-corrosion non-metal material layer (3) through cold extrusion.

4. The extruded fully clad sucker rod of claim 1 wherein: the metal sleeve (2) is a stainless steel sleeve.

5. The extruded fully coated sucker rod of claim 1 wherein: the end surface of the metal sleeve (2) adjacent to the end of the sucker rod base body (1) is flush with the end surface of the shoulder (13) adjacent to the end of the sucker rod base body (1).

6. The extruded fully clad sucker rod of claim 1 wherein: the anti-corrosion non-metal material layer (3) is an anti-corrosion polymer plastic layer.

7. The extruded fully coated sucker rod of claim 1 wherein: at least one groove (21) is arranged on the inner wall of the metal sleeve (2) close to the end part.

8. The extruded fully coated sucker rod of claim 1 wherein: an unloading groove (12) is arranged between the threaded joint (11) and the shoulder (13).

9. The extruded fully clad sucker rod of claim 1 wherein: a flange (15) is arranged between the wrench side (14) and the rod body (16), the metal sleeve (2) is closely attached to the outer surface of the flange (15) through hot extrusion and completely covers the flange (15), and the shape formed at the position, corresponding to the flange (15), of the outer surface of the metal sleeve (2) is the same as the shape of the flange (15).

10. The extruded fully clad sucker rod of claim 9 wherein: the threaded joint (11) has an outer diameter smaller than that of the shoulder (13), the flange (15) has an outer diameter equal to that of the shoulder (13), and the wrench side (14) has an outer diameter smaller than that of the shoulder (13) and the flange (15).

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