CN201162502Y - Sliding bush type sucker rod centralizer - Google Patents
Sliding bush type sucker rod centralizer Download PDFInfo
- Publication number
- CN201162502Y CN201162502Y CNU2008200114515U CN200820011451U CN201162502Y CN 201162502 Y CN201162502 Y CN 201162502Y CN U2008200114515 U CNU2008200114515 U CN U2008200114515U CN 200820011451 U CN200820011451 U CN 200820011451U CN 201162502 Y CN201162502 Y CN 201162502Y
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- connecting thread
- sucker rod
- degree
- periphery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 238000005086 pumping Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 239000000314 lubricant Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 238000005476 soldering Methods 0.000 abstract 1
- 239000003129 oil well Substances 0.000 description 15
- 229920006351 engineering plastic Polymers 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000010913 used oil Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model provides a sliding sleeve type sucker rod centralizer which has a mandrel, wherein the upper end of the mandrel is provided with a connecting thread which matches the connecting thread at one end of the sucker rod; the lower end of the mandrel is provided with a lower joint which is connected with the connecting thread; the lower end of the lower joint is connected with a connecting thread which matches the connecting thread on one end of the sucker rod; a tubular sliding sleeve made of steel is sleeved on the mandrel and provided with an axial through hole; the external surface of the sliding sleeve is enclosed by N circumferences with parallel axes and of the same diameters, wherein, N can be two, three or four; the degree of the interfacial angle around the center of the circumference is less than 360/N degrees but more than 360/3N degrees; the notch of the circumference faces the interior of the sliding sleeve; the external wall of the sliding sleeve is coated with a layer of nickel-based alloy powder compounded in a jet soldering way. The sliding sleeve type sucker rod centralizer provided by the utility model has high integrity; the contact area of the external wall of the sliding sleeve with the internal wall of the oil pipe is relatively large; the hardness of the external wall of the sliding sleeve is relatively high; the metal nickel particles leaked from the layer of nickel-based alloy powder can serve as lubricant between the external wall of the sliding sleeve and the internal wall of the oil pipe, thus greatly reducing the wear and tear of the sliding sleeve and the oil pipe and lengthening the service life.
Description
Technical field
The utility model relates to the sliding sleeve of a kind of oil pumping rod centering device, particularly a kind of oil pumping rod centering device.
Background technology
Sucker rod is the vitals of sucker rod pumping equipment, and it is with the oil well pump of the transmission of power oil supply down-hole of oil pumper.Plunger oil-well pump is reciprocating oil well pump, for the oil well that uses plunger oil-well pump to recover the oil, be with many continuous sucker rods upper and lower oil well pump that the power on ground is passed to the down-hole that moves back and forth in oil pipe, sucker rod has the body of rod, there is the bar head at the two ends of the body of rod, the bar head at two ends has connecting thread respectively, and sucker rod is to have the rod collar of connecting thread to link to each other with two ends, and the external diameter of rod collar is greater than the external diameter of the sucker rod body of rod and bar head.Oil well is very dark, and most of oil wells tilt, and sucker rod is in oil pipe during upper and lower reciprocating motion, rod collar can be attached on the tube inner wall and produce friction between the tube inner wall, time has been grown the rod collar that can wear and tear, and causes the sucker rod connection failure, also can cause the wearing and tearing to oil pipe simultaneously.In order to prevent above-mentioned wearing and tearing, between adjacent sucker rod, be connected with oil pumping rod centering device, oil pumping rod centering device is connected between the adjacent sucker rod.Oil pumping rod centering device has core bar, there is the connecting thread that matches with the connecting thread of sucker rod one end the upper end of core bar, the lower contact that the useful connecting thread in the lower end of core bar connects, there is the connecting thread that matches with the connecting thread of sucker rod one end the lower end of lower contact, is with tubular sliding sleeve on the core bar, and the external diameter of sliding sleeve is greater than the external diameter of rod collar, during use, sliding sleeve rubs mutually with tubing wall, and rod collar and oil pipe are isolated, and avoids the wearing and tearing of rod collar and oil pipe.In the prior art, the sliding sleeve of some oil pumping rod centering device is to make with engineering plastics, the sliding sleeve made from engineering plastics has pipe, pipe has the axially extending bore that matches with core bar, the pipe external diameter is greater than the external diameter of rod collar, the outer wall of pipe has axial tooth, and during use, the sliding sleeve outer wall that engineering plastics are made rubs mutually with the oil well inwall.The sliding sleeve of this oil pumping rod centering device is a pipe; the curvature of sliding sleeve circular tube external wall circumference is greater than the curvature of oil well inwall circumference; the outer wall of sliding sleeve pipe is that line contacts with the oil well inwall; the sliding sleeve pipe is made with engineering plastics; the intensity of engineering plastics is lower, hardness is less; the tooth on its outer wall and the contact area of tube inner wall are less; because the environment of down-hole, oil field is abominable; the load of sucker rod is very big; the sliding sleeve that engineering plastics are made uses the very short time to be worn; application life is short, can not protect beam hanger box cupling and oil pipe effectively.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned deficiency, proposes that a kind of intensity is higher, hardness is bigger, the sleeve type oil pumping rod centering device of, long service life big with the contact area of tube inner wall.
The utility model is realized with the following method.
This sleeve type oil pumping rod centering device has core bar, there is the connecting thread that matches with the connecting thread of sucker rod one end the upper end of core bar, the lower contact that the useful connecting thread in the lower end of core bar connects, there is the connecting thread that matches with the connecting thread of sucker rod one end the lower end of lower contact, be with the tubular sliding sleeve that steel are made on the core bar, sliding sleeve has axially extending bore, the outside wall surface of sliding sleeve is parallel by axis, the N sheet periphery of equal diameters surrounds, N is two, three or four, the center of circle dihedral angle number of degrees of periphery are less than the 360/N degree, greater than the 360/3N degree, the recess direction of periphery is in sliding sleeve, sliding sleeve is taper seats near the outside wall surface at two ends, the nickel base powder alloy-layer that the method for the useful surfacing of outer wall of sliding sleeve is compound.
During use, the utility model is to be used in the oil well, be connected between the adjacent sucker rod with connecting thread, preventing that rod collar from contacting with the oil well inwall produces abrasion, so size range of the present utility model is: the external diameter of a circle of sliding sleeve is identical with the curvature of used oil inside pipe wall periphery greater than the curvature of the external diameter of used rod collar, sliding sleeve periphery less than the internal diameter of used oil pipe, sliding sleeve inscribe diameter of a circle.
The utility model is connected between the adjacent sucker rod with connecting thread, when in the oil well that tilts, using, have the upper and lower reciprocating motion of inwall that a periphery is attached to oil pipe in the periphery of the outer wall of sliding sleeve, prevent from that rod collar from contacting with the oil well inwall to produce abrasion.
The utility model is that steel are made, and intensity is bigger; Because the curvature of the periphery of sliding sleeve outer wall is identical with the curvature of used oil inside pipe wall periphery, so the contact area of sliding sleeve outer wall and tube inner wall is bigger; Because the method at the useful surfacing of outer wall of sliding sleeve is compounded with the nickel base powder alloy-layer, nickel base powder alloy-layer hardness is higher, the metallic nickel particle that exposes in use can be used as the sliding agent of sliding sleeve outer wall and tube inner wall, greatly alleviates the wearing and tearing of sliding sleeve and oil pipe, and application life is longer.
Below in conjunction with accompanying drawing, the utility model is further described.
Description of drawings
Fig. 1 is the main cross-sectional schematic according to a kind of sleeve type oil pumping rod centering device of invention scheme proposition of the present utility model;
Fig. 2 is the M-M cross-sectional schematic of Fig. 1;
Fig. 3 is the I place enlarged diagram of Fig. 2.
Fig. 4 is the half section schematic diagram of the sucker rod centralizer sliding bush that surrounded by two peripheries;
Fig. 5 is that the N-N section of the sucker rod centralizer sliding bush that surrounded by two peripheries is looked schematic diagram;
Fig. 6 is the half section schematic diagram of the sucker rod centralizer sliding bush that surrounded by four peripheries;
Fig. 7 is that the P-P section of the sucker rod centralizer sliding bush that surrounded by four peripheries is looked schematic diagram.
The specific embodiment
Fig. 1, Fig. 2, among Fig. 3, the sleeve type oil pumping rod centering device has core bar 1, there is the connecting thread 2 that matches with the connecting thread of sucker rod one end the upper end of core bar, the lower contact 3 that the useful connecting thread in the lower end of core bar connects, there is the connecting thread 4 that matches with the connecting thread of sucker rod one end the lower end of lower contact, be with the tubular sliding sleeve 5 that steel are made on the core bar, sliding sleeve has axially extending bore 6, the outside wall surface of sliding sleeve is parallel by axis, three peripheries 7 of equal diameters, 8,9 surround, the neighboring in sliding sleeve cross section is to wait circular arc triangle edge 10, the recess direction of periphery is in sliding sleeve, the number of degrees of the center of circle dihedral angle A of periphery are 60 degree～105 degree, sliding sleeve is taper seats 11 near the outside wall surface at two ends, the nickel base powder alloy-layer 12 that the method for the useful surfacing of outer wall of sliding sleeve is compound.
The lower contact lower end will be an internal thread or externally threaded different according to the connecting thread of sucker rod one end with the connecting thread that the connecting thread of sucker rod one end matches, and can be external screw thread or internal thread.
Above-mentioned sucker rod centralizer sliding bush outside wall surface is that three peripheries parallel by axis, equal diameters surround, and the number of degrees of the center of circle dihedral angle B of periphery are 60 degree～105 degree.The sucker rod centralizer sliding bush outside wall surface also can be that two of, equal diameters parallel by axis or four peripheries surround.
Among Fig. 4, Fig. 5, the sucker rod centralizer sliding bush outside wall surface is that two peripheries 13,14 parallel by axis, equal diameters surround, and the number of degrees of the center of circle dihedral angle B of periphery are 100 degree～160 degree.
Among Fig. 6,7, the sucker rod centralizer sliding bush outside wall surface is that four peripheries 15,16,17,18 parallel by axis, equal diameters surround, and the number of degrees of the center of circle dihedral angle C of periphery are 40 degree～60 degree.
Claims (4)
1. sleeve type oil pumping rod centering device, core bar is arranged, there is the connecting thread that matches with the connecting thread of sucker rod one end the upper end of core bar, the lower contact that the useful connecting thread in the lower end of core bar connects, there is the connecting thread that matches with the connecting thread of sucker rod one end the lower end of lower contact, it is characterized in that: be with the tubular sliding sleeve that steel are made on the core bar, sliding sleeve has axially extending bore, the outside wall surface of sliding sleeve is parallel by axis, the N sheet periphery of equal diameters surrounds, N is two, three or four, the center of circle dihedral angle number of degrees of periphery are less than the 360/N degree, greater than the 360/3N degree, the recess direction of periphery is in sliding sleeve, sliding sleeve is taper seats near the outside wall surface at two ends, the nickel base powder alloy-layer that the method for the useful surfacing of outer wall of sliding sleeve is compound.
2. by the described sleeve type oil pumping rod centering device of claim 1, it is characterized in that: described sliding sleeve outside wall surface is that three peripheries parallel by axis, equal diameters surround, the recess direction of periphery is in sliding sleeve, and the number of degrees of the center of circle dihedral angle of periphery are 60 degree～105 degree.
3. by the described sleeve type oil pumping rod centering device of claim 1, it is characterized in that: described sliding sleeve outside wall surface is that two peripheries parallel by axis, equal diameters surround, and the number of degrees of the center of circle dihedral angle of periphery are 100 degree～160 degree.
4. by the described sleeve type oil pumping rod centering device of claim 1, it is characterized in that: described sliding sleeve outside wall surface is that four peripheries parallel by axis, equal diameters surround, and the center of circle dihedral angle number of degrees of periphery are 40 degree～60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200114515U CN201162502Y (en) | 2008-03-06 | 2008-03-06 | Sliding bush type sucker rod centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200114515U CN201162502Y (en) | 2008-03-06 | 2008-03-06 | Sliding bush type sucker rod centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201162502Y true CN201162502Y (en) | 2008-12-10 |
Family
ID=40183440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200114515U Expired - Fee Related CN201162502Y (en) | 2008-03-06 | 2008-03-06 | Sliding bush type sucker rod centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201162502Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575872A (en) * | 2023-07-11 | 2023-08-11 | 四川尔零石油科技有限公司 | Casing centralizer and production method thereof |
-
2008
- 2008-03-06 CN CNU2008200114515U patent/CN201162502Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575872A (en) * | 2023-07-11 | 2023-08-11 | 四川尔零石油科技有限公司 | Casing centralizer and production method thereof |
| CN116575872B (en) * | 2023-07-11 | 2023-09-12 | 四川尔零石油科技有限公司 | Casing centralizer and production method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10487617B2 (en) | Central shaft for bridge plug, bridge plug and setting method for the same | |
| CN201620769U (en) | Water connector for deep drilling | |
| CN208310706U (en) | A kind of anti-wear aluminium drill pipe | |
| CN201162502Y (en) | Sliding bush type sucker rod centralizer | |
| CN201162501Y (en) | Sliding bush of pumping rod centralizer | |
| US20160362944A1 (en) | Smooth bore collar | |
| CN101235708B (en) | Sucker rod centralizer sliding bush | |
| CN210829108U (en) | Flexible nipple for large-curvature well construction | |
| CN201723172U (en) | Universal eccentric-wear-resistant collar of sucker rod | |
| CN102628339A (en) | Mine drill stem | |
| CN215256081U (en) | Sucker rod guider | |
| CN201246113Y (en) | Screw connection drill rod | |
| CN201428393Y (en) | Anti-friction joint | |
| CN203257337U (en) | Non-thickened connection type thick-wall drill rod | |
| CN205154055U (en) | Rigidity drag reduction centralizer | |
| CN213980678U (en) | High-wear-resistance titanium alloy drill rod | |
| CN202131993U (en) | Sucker rod joint with functions of abrasion resistance and righting | |
| CN206617105U (en) | A wear-resistant torsion-reducing pup joint with rubber-metal sliding friction pair | |
| CN219796014U (en) | Gear shaft connecting shaft device with good wear resistance | |
| CN207268161U (en) | A kind of sucker rod rotary anti-abrasion device and its connecting shaft | |
| CN205689141U (en) | A kind of casing wear prevention damage device | |
| CN203394368U (en) | Plug-in anti-detachment device | |
| CN202645484U (en) | Long-distance seal expansion pipe assembly for oil drilling | |
| CN202176277U (en) | Self-lubricating and same-curvature ceramic compound dip rod straightener | |
| CN201771445U (en) | Abrasion-resistant drill collar with thickening middle part of tube body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20120306 |