CN108278089A - A kind of cladding sucker rod - Google Patents
A kind of cladding sucker rod Download PDFInfo
- Publication number
- CN108278089A CN108278089A CN201810302457.6A CN201810302457A CN108278089A CN 108278089 A CN108278089 A CN 108278089A CN 201810302457 A CN201810302457 A CN 201810302457A CN 108278089 A CN108278089 A CN 108278089A
- Authority
- CN
- China
- Prior art keywords
- rod
- head
- push away
- away
- undertaking
- 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.)
- Pending
Links
- 238000005253 cladding Methods 0.000 title claims abstract description 8
- 238000005260 corrosion Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 239000003129 oil well Substances 0.000 abstract description 5
- 238000005086 pumping Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
- E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
A kind of cladding sucker rod,Anti-corrosion pipe is coated on the body of rod,There is external screw thread on the head of the body of rod,The diameter for pushing away the lower part endoporus for accepting head is equal to the head diameter of the body of rod,Pushing away the top for accepting head has internal thread,Push away the external screw thread matching for accepting the internal thread on head top with body of rod head,Undertaking head is pushed away to be inserted in from the head of the body of rod,Push away the top for the lower part arrival anti-corrosion pipe for accepting head,The internal thread for pushing away undertaking head top is connect with the external screw thread on body of rod head,Make to push away to accept head and formed on the head of the body of rod and pushes away bearing surface,The lower compression of head is accepted to pushing away,Make to be pressed on abrasionproof pipe after pushing away the lower deformation undergauge for accepting head,Extruding force is transmitted on the body of rod,Make gapless between the top of anti-corrosion pipe and the body of rod,Well liquid cannot penetrate into the gap between the body of rod and anti-corrosion pipe,Prevent the body of rod from being corroded by well liquid,Processing is simple,Expense is low,Prevent the reliability that the body of rod is corroded high,The service life of rod string can be extended,Reduce workover rig service to oil well,Improve the economic benefit of pumpingh well.
Description
Technical field
The invention belongs to the sucker rods that oil well pump in oil field pumping well is connect with pumping unit, are a kind of cladding sucker rods.
Background technology
In oil pumping in oil fields system, sucker rod is immersed in well liquid and works, and Korrosionsmedium is contained in well liquid, to sucker rod
Corrosion is generated, causes the service life of rod string short, the oil well production period is short, deficiency in economic performance.In order to solve this problem,
Oil field used material type anticorrosive property sucker rod, but this sucker rod is metal material, and resistance to corrosion is limited, cannot be complete
It solves the problems, such as to be corroded.Chinese patent 200620086330.8《A kind of eccentric wear prevention pumping rod》, the skill involved by this patent
Art scheme in actual use, it is found that well liquid can enter abrasionproof pipe, so that sucker rod is corroded by well liquid, made oil pumping by corruption for a long time
Bar is impaired, and rod broken accident easily occurs.For this purpose, technical staff devises Chinese patent 2012203275962 again《It is a kind of new
Type eccentric wear prevention pumping rod》, this sucker rod will be in sucker rod（1）Surface layer carry out QPQ salt bath processing, formed QPQ salt bath layers
（4）, well liquid, which can enter abrasionproof pipe sucker rod, to be corroded, but processing complexity will greatly increase the production cost of sucker rod.
Invention content
The purpose of the present invention is designing a kind of cladding sucker rod, so that its sucker rod is not corroded, improve the use of rod string
Service life.
The object of the present invention is achieved like this：Head, anti-corrosion pipe, the body of rod are accepted including pushing away, anti-corrosion pipe is coated on the body of rod,
There is external screw thread on the head of the body of rod, and the diameter for pushing away the lower part endoporus for accepting head is equal to the head diameter of the body of rod, pushes away the top for accepting head
There is internal thread, push away the external screw thread matching for accepting the internal thread on head top with body of rod head, push away undertaking head and be inserted in from the head of the body of rod,
The top for the lower part arrival anti-corrosion pipe for accepting head is pushed away, the internal thread for pushing away undertaking head top connect with the external screw thread on body of rod head, makes
Pushing away undertaking head, formation pushes away bearing surface on the head of the body of rod, and the lower compression of head is accepted to pushing away, makes to push away the lower part Internal Hole Deformation for accepting head
It is pressed on after undergauge on abrasionproof pipe, extruding force is transmitted on the body of rod, makes gapless between the top of anti-corrosion pipe and the body of rod, well liquid is not
It can penetrate into the gap between the body of rod and anti-corrosion pipe, prevent the body of rod from being corroded by well liquid.
The beneficial effects of the invention are as follows：While the head of the body of rod forms and pushes away bearing surface, make top and the body of rod of anti-corrosion pipe
Between gapless, well liquid cannot penetrate into the gap between the body of rod and anti-corrosion pipe, prevent the body of rod from being corroded by well liquid.The present invention with
The prior art is compared, and processing is simple, and expense is low, prevents the reliability that the body of rod is corroded high, can extend rod string uses the longevity
Life extends the oil well production period, reduces workover rig service to oil well, improves the economic benefit of pumpingh well.
Description of the drawings
Fig. 1 is the installation diagram of the present invention.
Fig. 2 is structure chart when part 1 is not extruded in Fig. 1.
Specific implementation mode
It is illustrated with reference to Fig. 1,2 pairs of the embodiment of the present invention.
As seen from the figure, the embodiment of the present invention includes pushing away to accept head 1, anti-corrosion pipe 2, the body of rod 3, and anti-corrosion is coated on the body of rod 3
There is external screw thread 4 on the head of pipe 2, the body of rod 3, and the diameter for pushing away the lower part endoporus 7 for accepting head 1 is equal to the head diameter of the body of rod 3, pushes away undertaking
Internal thread 6 is arranged at first 1 top, pushes away and accepts the internal thread 6 on head 1 top and match with the external screw thread 4 on 3 head of the body of rod, push away accept head 1 from
The head of the body of rod 3 is inserted in, and is pushed away the top for the lower part arrival anti-corrosion pipe 2 for accepting head 1, is pushed away the internal thread 6 and the body of rod for accepting 1 top of head
The external screw thread 4 on 3 heads connects, and makes to push away to accept head 1 and formed pushing away bearing surface 5 on the head of the body of rod 3, the lower compression of head 1 is accepted to pushing away,
Make to push away after the lower part endoporus 7 for accepting head 1 deforms undergauge and be pressed on abrasionproof pipe 2, extruding force is transmitted on the body of rod 3, makes anti-corrosion pipe 2
Top and the body of rod 3 between gapless, well liquid cannot penetrate into the gap between the body of rod 3 and anti-corrosion pipe 2, prevent 3 quilt of the body of rod
Well liquid is corroded.Pushing away on the inner wall for the lower part endoporus 7 for accepting head 1 has a boss 8, and the boss 8 has several, can be pressed into anti-corrosion pipe
2 surface, the binding force between increase avoid anti-corrosion pipe 2 flexible.
The sucker rod two-end structure of the present invention is identical.
The effect for pushing away bearing surface 5 is to connect to have locking effect with rod collar when going into the well, and rod collar can be prevented de-
Button falls well.
Claims (2)
1. a kind of cladding sucker rod, including push away undertaking head（1）, anti-corrosion pipe（2）, the body of rod（3）, in the body of rod（3）Upper cladding anti-corrosion pipe
（2）, the body of rod（3）Head have external screw thread（4）, it is characterized in that：Push away undertaking head（1）Lower part endoporus（7）Diameter be equal to the body of rod
（3）Head diameter, push away undertaking head（1）Top have internal thread（6）, push away undertaking head（1）The internal thread on top（6）With the body of rod
（3）The external screw thread on head（4）Match, pushes away undertaking head（1）From the body of rod（3）Head be inserted in, push away undertaking head（1）Lower part reach it is anti-
Corruption pipe（2）Top, push away undertaking head（1）The internal thread on top（6）With the body of rod（3）The external screw thread on head（4）Connection, makes to push away undertaking
Head（1）In the body of rod（3）Head formed push away bearing surface（5）, to pushing away undertaking head（1）Lower compression, make to push away undertaking head（1）Lower part
Endoporus（7）It is pressed on abrasionproof pipe after deformation undergauge（2）On, extruding force is transmitted to the body of rod（3）On, make anti-corrosion pipe（2）Top with
The body of rod（3）Between gapless, well liquid cannot penetrate into the body of rod（3）With anti-corrosion pipe（2）Between gap in, prevent the body of rod（3）Quilt
Well liquid is corroded.
2. a kind of cladding sucker rod according to claim 1, it is characterized in that：Push away undertaking head（1）Lower part endoporus（7）It is interior
There is boss on wall（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810302457.6A CN108278089A (en) | 2018-04-05 | 2018-04-05 | A kind of cladding sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810302457.6A CN108278089A (en) | 2018-04-05 | 2018-04-05 | A kind of cladding sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108278089A true CN108278089A (en) | 2018-07-13 |
Family
ID=62811203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810302457.6A Pending CN108278089A (en) | 2018-04-05 | 2018-04-05 | A kind of cladding sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108278089A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821419A (en) * | 2019-12-22 | 2020-02-21 | 山东未来石油技术开发有限公司 | High-temperature-resistant, corrosion-resistant and hydrogen sulfide-resistant composite sucker rod |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2260941Y (en) * | 1996-12-11 | 1997-08-27 | 佛山市日丰企业有限公司 | Temp.-resistant pressure-resistant pipe joint easy for mounting and dismounting |
| CN104499952A (en) * | 2014-11-25 | 2015-04-08 | 张永祥 | Anticorrosion oil pumping rod |
-
2018
- 2018-04-05 CN CN201810302457.6A patent/CN108278089A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2260941Y (en) * | 1996-12-11 | 1997-08-27 | 佛山市日丰企业有限公司 | Temp.-resistant pressure-resistant pipe joint easy for mounting and dismounting |
| CN104499952A (en) * | 2014-11-25 | 2015-04-08 | 张永祥 | Anticorrosion oil pumping rod |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821419A (en) * | 2019-12-22 | 2020-02-21 | 山东未来石油技术开发有限公司 | High-temperature-resistant, corrosion-resistant and hydrogen sulfide-resistant composite sucker rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180713 |