CN206458346U - Pumping rod anti-corrosive device - Google Patents
Pumping rod anti-corrosive device Download PDFInfo
- Publication number
- CN206458346U CN206458346U CN201621449696.7U CN201621449696U CN206458346U CN 206458346 U CN206458346 U CN 206458346U CN 201621449696 U CN201621449696 U CN 201621449696U CN 206458346 U CN206458346 U CN 206458346U
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- CN
- China
- Prior art keywords
- central tube
- sieve nest
- plug
- top connection
- pipe
- 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.)
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Abstract
The utility model discloses a kind of pumping rod anti-corrosive device, the utility model includes top connection, sieve nest pipe, lower contact, central tube and plug, the upper and lower ends of top connection and lower contact respectively with sieve nest pipe are connected, centre bore is provided with top connection, the oil outlet being connected with centre bore is provided with the hole wall of top connection, central tube is inserted in sieve nest pipe, the upper end of central tube is threadedly coupled with plug, the threaded upper ends connection of plug and the centre bore of top connection, plug is located on the internal orifice of oil outlet, the upper end of lower contact is provided with blind hole, the hole wall of blind hole is provided with the fuel feed hole connected with blind hole, central tube is provided with the central tube oil outlet connected with oil outlet.Sieve nest pipe of the present utility model can form oil film, profit oil and protection centralizer and tubing wall on its outer lateral surface during the up and down motion in oil pipe, reduce frictional force therebetween, greatly alleviate the abrasion of tubing wall and centralizer itself.
Description
Technical field
The utility model, which is related to a kind of oil lubrication anti-corrosion for mitigating Dlagnosis of Sucker Rod Pumping Well tubing string sucker rod and oil pipe eccentric wear, to be helped
Positive device.
Background technology
（One）Case study
With the raising of oil field development degree, oil well eccentric wear turn into influence high water-cut stage oil well repair free period subject matter it
One.
In order to avoid the abrasion between sucker rod and tube inner wall, domestic and foreign scholars are in sucker rod and the eccentric wear machine of oil pipe
Reason, the Analysis on Main Influence Factors of eccentric wear, manufacturing parameter to roofbolt stressing influence analyze, the research of tubing string Theory of Stability and
Rod-pumped well optimization design diagnostic techniques etc. carries out substantial amounts of theory analysis and experimental study, achieves certain achievement.
On eccentric wear-proof process, develop using isolate oil pipe and oil pumping bar body as means roofbolt righting technology, based on turn
Eccentric wear-proof process, tubing anchor technology, sucker rod bottom accentuation techniques, hydraulic feedback pumping oil tech and the use of dynamic principle
New material technology improves the correlation technique of tube rod anti-wear performance.Wherein, the sucker rod stabilizing skill of isolation oil pipe and oil pumping bar body
Art is most widely used.The straight of oil pipe and sucker rod is avoided using the roofbolt righting technology for isolating oil pipe and oil pumping bar body as means
Abrasion is connect, but is converted into the abrasion of centralizer and oil pipe, if centralizer selects relatively hard materials, oil pipe serious wear；If
Centralizer selects softer material, then the centralizer life-span is shorter.
（Two）The main harm and Analysis on Mechanism of rod and tube partial-wear
The problem of existing for existing centralizer, for the friction and wear between reduction sucker rod and oil pipe, devises one
The centralizer by crude oil lubrication in well is planted, the centralizer passes through lubrication and the protection that crude oil keeps centralizer and tubing wall
Effect, it is to avoid sucker rod is directly contacted with oil pipe, improves the working life of R a T.
1. rod and tube partial-wear main harm shows three aspects：
（1）The abrasion of rod collar and the levigate of bar body cause bar de- or bar is disconnected.
（2）Oil pipe wear down, or even grind crack and hole, tubing round thread mill causes oil pipe to miss thoroughly etc..
（3）Rod parting and oil pipe stop production caused by missing dual reason.
2. rod and tube partial-wear is mainly what is caused by two major class reasons：
(1) well-drilling borehole bending or casing deformation cause tubing bending and cause rod and tube partial-wear.
(2) eccentric wear caused by rod string causes bending deformation under larger axial compressive force effect.
At present, most of pumpingh well gradients are small, can be approximately considered peupendicular hole, and its rod string eccentric wear is main by down stroke mistake
Rod string bending deformation causes in journey.Sucker rod is substantially at extended state during upstroke, so during upstroke
The eccentric wear produced because pumping the buckling of bar is not had, and only when well bore reaches constant slope, the sucker rod in hole deviation section is
Eccentric wear can be produced during upstroke.
Utility model content
The technical problems to be solved in the utility model is：The problem of existing for existing centralizer, for reduction sucker rod with
Friction and wear between oil pipe, designs a kind of centralizer of crude oil lubrication in dependence well, and the centralizer keeps helping by crude oil
Lubrication and the protective effect of positive device and tubing wall, it is to avoid sucker rod is directly contacted with oil pipe, improves R a T
Working life.
In order to solve the above-mentioned technical problem, the utility model includes top connection, sieve nest pipe, lower contact, central tube and plug,
The upper and lower ends of top connection and lower contact respectively with sieve nest pipe are connected, and are provided with top connection on centre bore, the hole wall of top connection
The oil outlet being connected with centre bore is provided with, central tube is inserted in sieve nest pipe, and the upper end of central tube is threadedly coupled with plug, plug
It is connected with the threaded upper ends of the centre bore of top connection, plug is located on the internal orifice of oil outlet, the upper end of lower contact is provided with blind
Hole, the hole wall of blind hole is provided with the fuel feed hole connected with blind hole, and central tube is provided with the central tube oil outlet connected with oil outlet,
Central tube is provided with the central tube fuel feed hole that is connected with fuel feed hole, and the lower end of central tube and centre bore is in sealing contact, and sieve nest pipe is
Tube wall is provided with the body of multiple oil outlets.
For the ease of being connected with sucker rod, the lower end of described lower contact is provided with external screw thread.
For the ease of dismantling and installing plug, pipe plug opening is provided with the upper surface of described plug.
In order to improve the anti-wear ability of centralizer, the lower end of described top connection is inserted in the upper end of sieve nest pipe and the two
Threaded connection, top connection it is cylindrical on be provided with the shaft shoulder, be provided with nylon between the shaft shoulder of top connection and the upper surface of sieve nest pipe
Packing A, the upper end of described lower contact is inserted in the lower end of sieve nest pipe and the two is threadedly coupled, the cylindrical upper setting of lower contact
There is the shaft shoulder, nylon packing B is provided between the shaft shoulder of lower contact and the lower surface of sieve nest pipe.
In order to preferably form oil film outside sieve nest pipe, the lateral surface of described sieve nest pipe scribbles oleophylic top layer.
Zinc-magnesium is placed with order to improve in the antiseptic property of centralizer, the lower end closure of the central tube, central tube pore
Rod, zinc-magnesium rod is located at the lower section of central tube fuel feed hole.
The utility model beneficial effect：The utility model be used for connect two sucker rods, oil pumping when, the utility model with
Oil pipe is contacted and sucker rod is not contacted with oil pipe, and centralizing function is played to sucker rod.Sieve nest pipe of the present utility model is in oil pipe
Up and down motion during can form oil film on its outer lateral surface, profit oil and protection centralizer and tubing wall, reduction is therebetween
Frictional force, greatly alleviate the abrasion of tubing wall and centralizer itself.
Brief description of the drawings
Fig. 1 is pumping rod anti-corrosive device structural representation.
In figure：1st, top connection, 2, plug, 3, oil outlet, 4, nylon packing A, 5, sieve nest pipe, 6, oleophylic top layer, 7, nylon
Packing B, 8, fuel feed hole, 9, lower contact, 10, zinc-magnesium rod, 11, central tube, 12, central tube fuel feed hole, 13, central tube oil outlet,
14th, pipe plug opening.
Embodiment
As shown in figure 1, this specific embodiment includes top connection 1, sieve nest pipe 5, lower contact 9, central tube 11 and plug 2, on
The upper and lower ends of joint 1 and lower contact 9 respectively with sieve nest pipe 5 are threadedly coupled, and the lower end of top connection 1 is inserted in the upper end of sieve nest pipe 5
In and the two be threadedly coupled, top connection 1 it is cylindrical on be provided with the shaft shoulder, the shaft shoulder of top connection 1 and the upper surface of sieve nest pipe 5 it
Between be provided with nylon packing A4, the upper end of lower contact 9 is inserted in the lower end of sieve nest pipe 5 and the two is threadedly coupled, lower contact 9
The shaft shoulder is provided with cylindrical, nylon packing B7 is provided between the shaft shoulder of lower contact 9 and the lower surface of sieve nest pipe 5, in top connection 1
The oil outlet 3 for being provided with and being connected with centre bore on centre bore, the hole wall of top connection 1 is provided with, central tube 11 is inserted in sieve nest pipe 5
In, the upper end of central tube 11 is threadedly coupled with plug 2, the lower end closure of central tube 11, and zinc is placed with the pore of central tube 11
Magnesium rod 10, zinc-magnesium rod 10 is located at the lower section of central tube fuel feed hole 12.Plug 2 is connected with the threaded upper ends of the centre bore of top connection 1,
Plug 2 is deposited in centre bore, and the partial threads that centre bore is located on plug 2 are used to be connected with sucker rod, the upper end of plug 2
Pipe plug opening 14 is provided with face, specific purpose tool, which is inserted in pipe plug opening 14, to be rotated plug 2 detachably and install plug 2, and plug 2 is located at
On the internal orifice of oil outlet, the upper end of lower contact 9 is provided with blind hole, and the lower end of lower contact 9 is provided with external screw thread, and the external screw thread is used
It is connected in sucker rod.The hole wall of blind hole is provided with the fuel feed hole 8 connected with blind hole, and central tube 11 is provided with and connected with oil outlet
Central tube oil outlet 13, central tube 11 is provided with the central tube fuel feed hole 12 that is connected with fuel feed hole 8, central tube 11 and centre bore
Lower end it is in sealing contact, sieve nest pipe 5 is the body that tube wall is provided with multiple oil outlets, and the lateral surface of sieve nest pipe 5 scribbles oleophylic table
Layer 6.Oil outlet on sieve nest pipe 5 is the less micropore in section.
Operation principle：This centralizer is used to connect two sucker rods, and top connection 1 is connected with upper sucker rod male thread, under connect
First 9 are connected with the box thread of lower sucker rod, during work, and the sucker rod entirely connected is arranged in oil pipe.
In oil pumping process, most of crude oil is by fuel feed hole 8, central tube fuel feed hole 12, central tube oil outlet 13, oil outlet 3
Flowing, the oil outlet that the crude oil part in sieve nest pipe 5 enters on sieve nest pipe 5, when sieve nest pipe 5 moves up and down process in oil pipe
In, the crude oil in oil outlet on sieve nest pipe 5 is brought out and oil film is respectively formed on sieve nest pipe 5 is cylindrical, and profit oil and protection are helped
Positive device and tubing wall, reduce frictional force therebetween, greatly alleviate the abrasion of tubing wall and centralizer itself.
Claims (6)
1. a kind of pumping rod anti-corrosive device, it is characterised in that：Including top connection, sieve nest pipe, lower contact, central tube and plug, above connect
Head and upper and lower ends of the lower contact respectively with sieve nest pipe are connected, and are provided with centre bore, the hole wall of top connection and are set in top connection
Have the oil outlet being connected with centre bore, central tube is inserted in sieve nest pipe, and the upper end of central tube is threadedly coupled with plug, plug with it is upper
The threaded upper ends connection of the centre bore of joint, plug is located on the internal orifice of oil outlet, and the upper end of lower contact is provided with blind hole, blind
The hole wall in hole is provided with the fuel feed hole connected with blind hole, and central tube is provided with the central tube oil outlet connected with oil outlet, center
Pipe is provided with the central tube fuel feed hole that is connected with fuel feed hole, and the lower end of central tube and centre bore is in sealing contact, and sieve nest pipe is tube wall
It is provided with the body of multiple oil outlets.
2. pumping rod anti-corrosive device according to claim 1, it is characterised in that：The lower end of described lower contact is provided with outer spiral shell
Line.
3. pumping rod anti-corrosive device according to claim 1, it is characterised in that：Silk is provided with the upper surface of described plug
Plug-hole.
4. pumping rod anti-corrosive device according to claim 1, it is characterised in that：The lower end of described top connection is inserted in sieve nest pipe
Upper end in and the two be threadedly coupled, top connection it is cylindrical on be provided with the shaft shoulder, the shaft shoulder of top connection and the upper end of sieve nest pipe
Nylon packing A is provided between face, the upper end of described lower contact is inserted in the lower end of sieve nest pipe and the two is threadedly coupled, under
Joint it is cylindrical on be provided with the shaft shoulder, nylon packing B is provided between the shaft shoulder of lower contact and the lower surface of sieve nest pipe.
5. pumping rod anti-corrosive device according to claim 1, it is characterised in that：The lateral surface of described sieve nest pipe scribbles oleophylic
Top layer.
6. the pumping rod anti-corrosive device according to any one of claim 1-5, it is characterised in that：Under the central tube
End seal is blocked up, and zinc-magnesium rod is placed with central tube pore, and zinc-magnesium rod is located at the lower section of central tube fuel feed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621449696.7U CN206458346U (en) | 2016-12-28 | 2016-12-28 | Pumping rod anti-corrosive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621449696.7U CN206458346U (en) | 2016-12-28 | 2016-12-28 | Pumping rod anti-corrosive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206458346U true CN206458346U (en) | 2017-09-01 |
Family
ID=59697397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621449696.7U Expired - Fee Related CN206458346U (en) | 2016-12-28 | 2016-12-28 | Pumping rod anti-corrosive device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206458346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113588A (en) * | 2018-10-23 | 2019-01-01 | 董刚 | A kind of extraction underground heat hollow rod |
-
2016
- 2016-12-28 CN CN201621449696.7U patent/CN206458346U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113588A (en) * | 2018-10-23 | 2019-01-01 | 董刚 | A kind of extraction underground heat hollow rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170901 Termination date: 20201228 |