CN103628823A - Novel torsion oil pumping polish rod - Google Patents
Novel torsion oil pumping polish rod Download PDFInfo
- Publication number
- CN103628823A CN103628823A CN201210295671.6A CN201210295671A CN103628823A CN 103628823 A CN103628823 A CN 103628823A CN 201210295671 A CN201210295671 A CN 201210295671A CN 103628823 A CN103628823 A CN 103628823A
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- China
- Prior art keywords
- polish rod
- polished rod
- rod body
- oil pumping
- head
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Abstract
The invention discloses a novel torsion oil pumping polish rod which comprises a polish rod body. The polish rod body is composed of a polish rod upsetting head, a square wrench, a rod body and a polish rod small head in a connected mode, the surface of the polish rod body is provided with a nickel base alloy coating in a spraying welding mode, the polish rod body and the nickel base alloy coating permeate each other to form a permeation layer, the polish rod upsetting head is of a conical outer-thread structure, the square wrench is of a square structure, and the polish rod small head is of a flat-thread structure. The novel torsion oil pumping polish rod has the good overall bending resistance, the good capacity for resisting surface crack generation and the good wear resisting and corrosion resisting performance, conical threads are adopted to the polish rod upsetting head so that the defects that the stress groove portion of a common oil pumping polish rod is low in mechanical strength and can not bear large torsion loads can be overcome, the proper thread tightness distance can be achieved under cooperation of a coupling and a pushing and bearing table, sufficient tripping resisting friction force is accordingly provided, and tripping is prevented.
Description
Technical field
The present invention relates to the oil pumping polish rod using in a kind of field produces, relate in particular to a kind of torsion pumping polished rod.
Background technology
Rod-pumped well is all the main oil production method of oil field at home all the time, and oil pumping polish rod is one of critical component of this class rod pumping system.Oil pumping polish rod, as first sucker rod of rod-pumped well, first will bear all sucker rods in down-hole.The load such as various resistances that produce in the gravity of oil well pump and oil well well liquid and oil pumping process; Because it will back and forth appear between down-hole well liquid and atmosphere within a work period, also to rub with the rubber oil sea of well head constantly simultaneously, therefore make common polished rod be difficult to bear such corrosion and wearing and tearing.In addition, along with being on the increase of current dark oil well, heavy oil wells and high water-cut well, also need to continually develop enough enough good oil pumping polish rods of large anti-wear performance of supporting capacity.
Although the oil pumping polish rod for screw pump oil production can make screw pump running at present, can solve wellhead sealing problem, but can not carry large torsional load, because the bar head thread of common oil pumping polish rod is straight thread, its tooth form is less, can not carry and apply large pretension strength, more can not bear large torsion, therefore when rotating the screw pump stem string of load, very easily there is dropout fault, affect the normal operation of screw pump.
Summary of the invention
The problem existing for above-mentioned prior art, the object of the invention is to provide a kind of and has larger supporting capacity and bending resistance, and the novel torsion pumping polished rod of good wear-resisting corrosive nature.
Technical scheme of the present invention is: a kind of novel torsion pumping polished rod, comprise polished rod body, described polished rod body is connected to form by polished rod jumping-up head, spanner side, the body of rod and polished rod microcephaly, the surface spraying weld of described polished rod body has ni base alloy coating, between described polished rod body and ni base alloy coating, interpenetrate formation permeable formation, described polished rod jumping-up head is conical external screw thread structure, and described spanner side is tetragonal, and described polished rod microcephaly is flat thread structure.
As preferably, the thickness of described permeable formation is 1～10 μ m.
As preferably, the thickness of described ni base alloy coating is 0.1～0.5mm.
The invention has the beneficial effects as follows: polished rod body surface surfacing has ni base alloy coating, make polished rod there is better whole anti-bending strength and resist the ability that face crack produces, and there is good wear and corrosion behavior, polished rod jumping-up head has adopted the tapered thread of unstressed groove structure, effectively avoided common oil pumping polish rod stress groove location mechanical strength low, can not carry the defect of large torsional load, adopt tapered thread tooth form larger, at box cupling and pushing away under the cooperation of cushion cap, can reach suitable Thread standoff, thereby provide enough anti-tripping frictional force, effectively avoided common oil pumping polish rod because of bar tooth form little, what stress groove mechanical intensity caused can not apply the anti-tripping strength of large pretension, easily cause the defect of dropout.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1.
In figure: 1, polished rod body; 2, ni base alloy coating; 3, permeable formation; 11, polished rod jumping-up head; 12, spanner side; 13, the body of rod; 14, polished rod microcephaly.
The specific embodiment
As one embodiment of the present invention, as depicted in figs. 1 and 2, a kind of novel torsion pumping polished rod, comprise polished rod body 1, described polished rod body 1 is connected to form by polished rod jumping-up head 11, spanner side 12, the body of rod 13 and polished rod microcephaly 14, the surface spraying weld of described polished rod body 1 has ni base alloy coating 2, and the thickness of described ni base alloy coating 2 is 0.1～0.5mm; Between described polished rod body 1 and ni base alloy coating 2, interpenetrate and form permeable formation 3, the thickness of described permeable formation 3 is 1～10 μ m.Described polished rod jumping-up head 11 is conical external screw thread structure, and described spanner side 12 is tetragonal, and described polished rod microcephaly 14 is flat thread structure.
Polished rod body 1 surface spraying weld of the present invention has ni base alloy coating 2, make polished rod there is better whole anti-bending strength and resist the ability that face crack produces, and there is good wear and corrosion behavior, polished rod jumping-up head 11 has adopted the tapered thread of unstressed groove structure, effectively avoided common oil pumping polish rod stress groove location mechanical strength low, can not carry the defect of large torsional load, adopt tapered thread tooth form larger, at box cupling and pushing away under the cooperation of cushion cap, can reach suitable Thread standoff, thereby provide enough anti-tripping frictional force, effectively avoided common oil pumping polish rod because of bar tooth form little, what stress groove mechanical intensity caused can not apply the anti-tripping strength of large pretension, easily cause the defect of dropout.
Although above-mentioned embodiment has been done more detailed text description to the present invention; but these text descriptions; just the simple text of mentality of designing of the present invention is described; rather than the restriction to mentality of designing of the present invention; any combination, increase or modification that does not exceed mentality of designing of the present invention, all falls into protection scope of the present invention.
Claims (3)
1. a novel torsion pumping polished rod, comprise polished rod body, described polished rod body is connected to form by polished rod jumping-up head, spanner side, the body of rod and polished rod microcephaly, it is characterized in that: the surface spraying weld of described polished rod body has ni base alloy coating, between described polished rod body and ni base alloy coating, interpenetrate formation permeable formation, described polished rod jumping-up head is conical external screw thread structure, and described spanner side is tetragonal, and described polished rod microcephaly is flat thread structure.
2. novel torsion pumping polished rod according to claim 1, is characterized in that: the thickness of described permeable formation is 1～10 μ m.
3. novel torsion pumping polished rod according to claim 1 and 2, is characterized in that: the thickness of described ni base alloy coating is 0.1～0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210295671.6A CN103628823A (en) | 2012-08-20 | 2012-08-20 | Novel torsion oil pumping polish rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210295671.6A CN103628823A (en) | 2012-08-20 | 2012-08-20 | Novel torsion oil pumping polish rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103628823A true CN103628823A (en) | 2014-03-12 |
Family
ID=50210240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210295671.6A Pending CN103628823A (en) | 2012-08-20 | 2012-08-20 | Novel torsion oil pumping polish rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103628823A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2114187A (en) * | 1982-01-23 | 1983-08-17 | Benteler Werke Ag | A pump rod for a pump string |
| CN2871798Y (en) * | 2006-02-28 | 2007-02-21 | 铁岭市兴达石油机械厂 | High-abrasion-resisting and anticorrosive torsional-moment polished rod |
| CN101070752A (en) * | 2007-06-27 | 2007-11-14 | 安东石油技术（集团）有限公司 | Anti-corrosion high-strength pumping-oil polish rod |
| CN201214988Y (en) * | 2008-05-14 | 2009-04-01 | 东营市铁人抽油杆有限公司 | Torsion pumping polished rod |
| CN201574692U (en) * | 2009-05-26 | 2010-09-08 | 铁岭米勒石油新材料有限公司 | Oil-pumping polished rod |
| CN202788641U (en) * | 2012-08-20 | 2013-03-13 | 成都掌握移动信息技术有限公司 | Novel torque pumping polished rod |
-
2012
- 2012-08-20 CN CN201210295671.6A patent/CN103628823A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2114187A (en) * | 1982-01-23 | 1983-08-17 | Benteler Werke Ag | A pump rod for a pump string |
| CN2871798Y (en) * | 2006-02-28 | 2007-02-21 | 铁岭市兴达石油机械厂 | High-abrasion-resisting and anticorrosive torsional-moment polished rod |
| CN101070752A (en) * | 2007-06-27 | 2007-11-14 | 安东石油技术（集团）有限公司 | Anti-corrosion high-strength pumping-oil polish rod |
| CN201214988Y (en) * | 2008-05-14 | 2009-04-01 | 东营市铁人抽油杆有限公司 | Torsion pumping polished rod |
| CN201574692U (en) * | 2009-05-26 | 2010-09-08 | 铁岭米勒石油新材料有限公司 | Oil-pumping polished rod |
| CN202788641U (en) * | 2012-08-20 | 2013-03-13 | 成都掌握移动信息技术有限公司 | Novel torque pumping polished rod |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140312 |