CN101235708B - Sucker rod centralizer sliding bush - Google Patents
Sucker rod centralizer sliding bush Download PDFInfo
- Publication number
- CN101235708B CN101235708B CN2008100105489A CN200810010548A CN101235708B CN 101235708 B CN101235708 B CN 101235708B CN 2008100105489 A CN2008100105489 A CN 2008100105489A CN 200810010548 A CN200810010548 A CN 200810010548A CN 101235708 B CN101235708 B CN 101235708B
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- Prior art keywords
- sliding sleeve
- wall
- sucker rod
- degree
- periphery
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Abstract
The invention relates to a sucker rod centralizer sliding sleeve, which is provided with a tube-shaped sliding sleeve which is made of rolled steel, the sliding sleeve is provided with an axial through hole, the outer wall surface of the sliding sleeve is surrounded by N pieces of circumferential faces whose shaft lines are parallel and diameters are equal, the N is two, three or four, the degree numbers of circle center dihedral angles of the circumferential faces are less than 360/N degrees, bigger than 360/3N degrees, the notch direction of the circumferential face faces to the sliding sleeve, the outer wall surface of the sliding sleeve which is adjacent to both ends is a conical surface, and the outer wall of the sliding sleeve is provided with nickel base powder alloy layer which is composited by a spray welding method. The sucker rod centralizer sliding sleeve has higher intensity, the circumferential face of the outer wall of the sliding sleeve can be the same with the curvature of the inner wall of the oil pipe, the contact face between the circumferential face of the outer wall of the sliding sleeve and the inner wall of the oil pipe is bigger, the hardness of the outer wall of the sliding sleeve is higher, when the nickel base powder alloy layer is used, exposed metal nickel particle can be used as the lubricating agent of the outer wall of the sliding sleeve and the inner wall of the oil pipe, the abrasion of the sliding sleeve and the oil pipe is greatly lightened, and the service span is longer.
Description
Technical field
The present invention relates to the sliding sleeve of the accessory, particularly a kind of oil pumping rod centering device of oil pumping rod centering device in the sucker rod pumping equipment of a kind of oil field.
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 in the oil well that tilts, 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 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 that engineering plastics are made rubs mutually with tubing wall.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; sliding sleeve is to make 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 objective of the invention is in order to overcome above-mentioned deficiency, propose that a kind of intensity is higher, hardness is bigger, the sucker rod centralizer sliding bush of, long service life big with the contact area of tube inner wall.
The present invention is achieved using the following method.
The tubular sliding sleeve that this sucker rod centralizer sliding bush has steel to make, sliding sleeve has axially extending bore, the outside wall surface of sliding sleeve is that N sheet periphery parallel by axis, 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, and 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 present invention is used in the oil well, the present invention is enclosed within on the core bar of oil pumping rod centering device and with lower contact to form the sleeve type oil pumping rod centering device, this sleeve type oil pumping rod centering device is 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 invention 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.
Be connected between the adjacent sucker rod with connecting thread having oil pumping rod centering device of the present invention, 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 present invention 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 present invention is further described.
Description of drawings
Fig. 1 is the main cross-sectional schematic according to a kind of sucker rod centralizer sliding bush of invention scheme proposition of the present invention;
Fig. 2 is that the M-M section of Fig. 1 is looked schematic diagram;
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
Among Fig. 1, Fig. 2, Fig. 3, the tubular sliding sleeve 1 that sucker rod centralizer sliding bush has steel to make, sliding sleeve has axially extending bore 2, the outside wall surface of sliding sleeve is that three peripheries 3,4,5 parallel by axis, equal diameters surround, the neighboring in sliding sleeve cross section is to wait circular arc triangle edge 6, 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 7 near the outside wall surface at two ends, the nickel base powder alloy-layer 8 that the method for the useful surfacing of outer wall of sliding sleeve is compound.
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 9,10 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 11,12,13,14 parallel by axis, equal diameters surround, and the number of the center of circle dihedral angle degree C of periphery is 40 degree～60 degree.
Claims (4)
1. sucker rod centralizer sliding bush, it is characterized in that: be the tubular sliding sleeve made from steel, 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, the both ends of the surface of sliding sleeve have chamfering, N is two, three or four, the radian of each sheet periphery is 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, the external diameter of a circle of sliding sleeve is less than the internal diameter of used oil pipe, sliding sleeve inscribe diameter of a circle is greater than the external diameter of used rod collar, the curvature of sliding sleeve periphery is identical with the curvature of used oil inside pipe wall periphery.
2. by the described sucker rod centralizer sliding bush of claim 1, it is characterized in that: the outside wall surface of described sliding sleeve is that three peripheries parallel by axis, equal diameters surround, the recess direction of periphery is in sliding sleeve, and the radian of each sheet periphery is 60 degree～105 degree.
3. by the described sucker rod centralizer sliding bush of claim 1, it is characterized in that: the outside wall surface of described sliding sleeve is that two peripheries parallel by axis, equal diameters surround, and the radian of each sheet periphery is 100 degree～160 degree.
4. by the described sucker rod centralizer sliding bush of claim 1, it is characterized in that: the outside wall surface of described sliding sleeve is that four peripheries parallel by axis, equal diameters surround, and the radian of each sheet periphery is 40 degree～60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100105489A CN101235708B (en) | 2008-03-06 | 2008-03-06 | Sucker rod centralizer sliding bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100105489A CN101235708B (en) | 2008-03-06 | 2008-03-06 | Sucker rod centralizer sliding bush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101235708A CN101235708A (en) | 2008-08-06 |
| CN101235708B true CN101235708B (en) | 2011-01-12 |
Family
ID=39919580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100105489A Expired - Fee Related CN101235708B (en) | 2008-03-06 | 2008-03-06 | Sucker rod centralizer sliding bush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101235708B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590546B (en) * | 2018-07-04 | 2023-05-26 | 中国地质大学（北京） | Power drilling tool experiment righting device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4101179A (en) * | 1977-10-03 | 1978-07-18 | Royal Tool Company, Inc. | Drilling stabilizer including mechanical interlock device |
| CN2457323Y (en) * | 2000-10-27 | 2001-10-31 | 方连君 | Centralizer of pumping rod |
| WO2006077399A3 (en) * | 2005-01-18 | 2006-10-19 | Downhole Products Plc | Centraliser |
| CN2846711Y (en) * | 2005-09-24 | 2006-12-13 | 辽河石油勘探局 | Low wear resistance centralizer for horizontal directional drilling well |
| CN101059061A (en) * | 2007-04-26 | 2007-10-24 | 倪红坚 | Sliding push-the-bit type steering drilling tool |
| CN201162501Y (en) * | 2008-03-06 | 2008-12-10 | 铁岭昊元石油装备有限公司 | Sliding bush of pumping rod centralizer |
-
2008
- 2008-03-06 CN CN2008100105489A patent/CN101235708B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4101179A (en) * | 1977-10-03 | 1978-07-18 | Royal Tool Company, Inc. | Drilling stabilizer including mechanical interlock device |
| CN2457323Y (en) * | 2000-10-27 | 2001-10-31 | 方连君 | Centralizer of pumping rod |
| WO2006077399A3 (en) * | 2005-01-18 | 2006-10-19 | Downhole Products Plc | Centraliser |
| CN2846711Y (en) * | 2005-09-24 | 2006-12-13 | 辽河石油勘探局 | Low wear resistance centralizer for horizontal directional drilling well |
| CN101059061A (en) * | 2007-04-26 | 2007-10-24 | 倪红坚 | Sliding push-the-bit type steering drilling tool |
| CN201162501Y (en) * | 2008-03-06 | 2008-12-10 | 铁岭昊元石油装备有限公司 | Sliding bush of pumping rod centralizer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101235708A (en) | 2008-08-06 |
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Granted publication date: 20110112 Termination date: 20150306 |
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