CN206972203U - Pumpingh well impressed current method anti-corrosive apparatus - Google Patents
Pumpingh well impressed current method anti-corrosive apparatus Download PDFInfo
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- CN206972203U CN206972203U CN201720490366.0U CN201720490366U CN206972203U CN 206972203 U CN206972203 U CN 206972203U CN 201720490366 U CN201720490366 U CN 201720490366U CN 206972203 U CN206972203 U CN 206972203U
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Abstract
The anti-corrosive apparatus on oil field pumping well is the utility model is related to, more particularly to a kind of pumpingh well impressed current method anti-corrosive apparatus.Including polished rod eye, rod string, flowline leads to, oil pipe, sleeve pipe, oil well pump and dc source, its middle sleeve is arranged in pit shaft, on oil pipe after installation oil well pump in tripping in sleeve pipe, the top of oil pipe is connected with set pipe insulation, the logical bottom of flowline is connected with oil pipe, in rod string tripping in oil pipe, and the piston of bottom and oil well pump connects, the top of rod string connects through flowline is logical with polished rod eye insulation, multiple non-conductive centralizers are installed at interval on oil pipe, the negative electrode of dc source is connected to flowline and led to, the plus earth of dc source, the tail end of oil pipe is with sleeve pipe by contacting conducting, form closed-loop path.The utility model improves the sucker rod of pumpingh well, oil pipe, oil well pump, sleeve pipe, the service life of downhole tool, improves the economic benefit of oil well.
Description
Technical field
The anti-corrosive apparatus on oil field pumping well is the utility model is related to, is particularly a kind of pumpingh well impressed current method anti-corrosion
Device.
Background technology
All be present etching problem in sucker rod, oil pipe, oil well pump, sleeve pipe, the downhole tool of some pumpingh wells, prevent at present
Stating the measure of corrosion has many kinds, but is all that individually a kind of instrument carries out anti-corrosion, such as Patent No. to it
It is 201220522703.7 entitled《Polyethylene from high pressure process antisepsis oil pipe》Chinese utility model patent, oil pipe can only exactly be prevented
Corruption, anti-corrosion is unable to other instruments in well；And for example Patent No. 201410796659.2, it is entitled《A kind of anticorrosion oil pumping
Bar》Chinese utility model patent, and anti-corrosion can only be unable to other instruments in well to pumping rod anti-corrosive；For another example patent
Number be 201220650010.6, it is entitled《The long anti-casing corrosion Well-cleaning protection device of tail pipe》Chinese utility model patent,
It is that can only be unable to anti-corrosion to other instruments in well to casing tube anti-corrosive.Limitation be present in above-mentioned anti-corrosion measure, so, pumpingh well
Sucker rod, oil pipe, oil well pump, sleeve pipe, downhole tool still have etching problem, cause the sucker rod of pumpingh well, oil pipe, take out
Oil pump, sleeve pipe, the service life of downhole tool are short, it is necessary to which frequent workover treatment, cost for oil production is high, deficiency in economic performance.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of pumpingh well impressed current method anti-corrosive apparatus, with
Overcome it is above-mentioned problem be present, improve the sucker rod of pumpingh well, oil pipe, oil well pump, sleeve pipe, the service life of downhole tool, reduce
The workover treatment of pumpingh well, cost for oil production is reduced, improve the economic benefit of oil well.
To achieve these goals, the utility model uses following technical scheme：
A kind of pumpingh well impressed current method anti-corrosive apparatus, including polished rod eye, rod string, flowline are logical, oil pipe, sleeve pipe,
Oil well pump and dc source, its middle sleeve are arranged in pit shaft, on the oil pipe after installation oil well pump in tripping in sleeve pipe, the oil
The top of pipe is connected with described sleeve pipe insulation, and the logical bottom of the flowline is connected with the oil pipe, the rod string tripping in
In oil pipe and bottom is connected with the piston of the oil well pump, and the top of the rod string leads to through the flowline and hanging rope
Device insulation connection, the polished rod eye are connected with oil pumper, and multiple non-conductive centralizers, the direct current are installed in interval on the oil pipe
The negative electrode of power supply is connected to flowline and led to, and the plus earth of dc source, the tail end of the oil pipe is led with sleeve pipe by contacting
It is logical, electricity is transmitted to from the upper end of oil pipe through tail end on sleeve pipe, then the anode through the earth and dc source forms closed-loop path.
The tail end installation conductor of the oil pipe, the outside of the conductor and casing-contact, the conductor is by oil pipe
The conductance of tail end enters sleeve pipe.
The logical side of the flowline is provided with oil-out, and the oil-out is connected by insulating element with flow line.
The top installation set pipe connection of described sleeve pipe, the oil pipe top connection hanger, the oil pipe it is upper
Portion is suspended in described sleeve pipe attachment means by hanger, and insulation is installed between the hanger and described sleeve pipe attachment means
Cylinder, the logical bottom of the flowline are connected with the hanger.
The side of described sleeve pipe attachment means is provided with valve, and the valve is used for the pressure for controlling sleeve pipe.
Described sleeve pipe attachment means are provided with the antifleeing mechanism for preventing the oil pipe play.
The logical bottom of the flowline is connected by flange with described sleeve pipe attachment means, and the flange fills with sleeve pipe connection
Insulating element is provided between putting.
The insulating cylinder be pyramidal structure and with the hanger and described sleeve pipe attachment means cone match.
The top of the rod string connects through sealer and polished rod eye insulation, and the sealer is located at the flowline
Logical top and bottom is connected with the top that the flowline leads to.
Insulator is installed between the top of the rod string and the junction of the polished rod eye, makes rod string not with hanging
Device of restricting is conductive.
The advantages of the utility model and beneficial effect are：The utility model is fuel-displaced by the way that the negative electrode of dc source is connected to
Manage on logical, the plus earth of dc source, after circuit communication, rod string, oil pipe, sleeve pipe, downhole tool are thus cathodically polarised, and are made
Rod string, oil pipe, sleeve pipe obtain complete cathodic protection, so as to prevent rod string, oil pipe, sleeve pipe, downhole tool quilt
Corrosion.Therefore, the utility model overcomes insufficient present in the existing aseptic technic used in pumpingh well, can prevent from pumping
Rod string, oil pipe, sleeve pipe, the downhole tool of well are corroded, can improve the sucker rod of pumpingh well, oil pipe, oil well pump, sleeve pipe,
The service life of downhole tool, the workover treatment of pumpingh well is reduced, reduce cost for oil production, improve the economic benefit of oil well.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1 is polished rod eye, and 2 be insulator, and 3 be rod string, and 4 be sealer, and 5 lead to for flowline, and 6 be hanger,
7 be insulating cylinder, and 8 be sleeve pipe connection device, and 9 be non-conductive centralizer, and 10 be oil pipe, and 11 be sleeve pipe, and 12 be oil well pump, and 13 be to lead
Electrical equipment, 14 be dc source.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in detail example.
As shown in figure 1, a kind of pumpingh well impressed current method anti-corrosive apparatus provided by the utility model, including polished rod eye 1, take out
Beam hanger post 3, flowline lead to 5, oil pipe 10, sleeve pipe 11, oil well pump 12 and dc source 14, and its middle sleeve 11 is arranged in pit shaft,
On oil pipe 10 after installation oil well pump 12 in tripping in sleeve pipe 11, top and the insulation of sleeve pipe 11 of oil pipe 10 connect, under flowline logical 5
Portion is connected with oil pipe 10, and in the tripping in oil pipe 10 of rod string 3 and bottom is connected with the piston of oil well pump 12, rod string 3 it is upper
Portion is connected through flowline logical 5 and the insulation of polished rod eye 1, and polished rod eye 1 is connected with oil pumper, and interval installation is multiple on oil pipe 10 does not lead
Electric centralizer 9.The negative electrode of dc source 14 is connected on flowline logical 5, the plus earth of dc source 14, the tail end of oil pipe 10
Turned on sleeve pipe 11 by contacting, electricity is transmitted to from the upper end of oil pipe 10 through tail end on sleeve pipe 11, then through the earth and direct current
The anode in source 14 forms closed-loop path.
Between the top of rod string 3 and the junction of polished rod eye 1 install insulator 2, make rod string 3 not with polished rod eye
1 is conductive.The top of rod string 3 connects through the insulation of sealer 4 and polished rod eye 1, sealer 4 be located at flowline lead to 5 top,
And bottom is connected with the top of flowline logical 5.
Further, the tail end installation conductor 13 of oil pipe 10, the outside of conductor 13 contact with sleeve pipe 11, conductor 13
The conductance of the tail end of oil pipe 10 is entered into sleeve pipe 11.Conductor 13 uses conductive metal material, and its profile is similar to centralizer, can make oil
Pipe 10 is forcibly turned on conduction with sleeve pipe 11.
The side of flowline logical 5 is provided with oil-out, and oil-out is connected by insulating element with flow line.
The top installation set pipe connection 8 of sleeve pipe 11, the top connection hanger 6 of oil pipe 10, the top of oil pipe 10 leads to
Cross hanger 6 to be suspended on sleeve pipe connection device 8, mounting insulation tube 7 between hanger 6 and sleeve pipe connection device 8, flowline leads to
5 bottom is connected with hanger 6.
The side of sleeve pipe connection device 8 (i.e. the big four of well head) is provided with valve, and valve is used for the pressure for controlling sleeve pipe 11.
In order to prevent 10 upward play of oil pipe, sleeve pipe connection device 8 is provided with the antifleeing mechanism for preventing the play of oil pipe 10.
The antifleeing mechanism can specifically use the jackscrew being arranged on the flange of sleeve pipe connection device 8, and it is compacting that it, which is acted on,
Hanger 6, to prevent the play of hanger 6.
Further, insulating cylinder be pyramidal structure and with the hanger 6 of both sides and sleeve pipe connection device cone match.Go out
The bottom of oil pipe logical 5 is connected by flange with sleeve pipe connection device 8, and insulating element is provided between flange and sleeve pipe connection device 8.
Operation principle of the present utility model is：
Multiple non-conductive centralizers 9 are installed at interval on oil pipe 10, oil pipe 10 is not contacted in addition to conductor 13 with sleeve pipe 11,
The mounting insulation tube 7 between hanger 6 and sleeve pipe connection device 8, makes the top of sleeve pipe 11 and the top of oil pipe 10 and flowline
Logical 5 is non-conductive；Insulator 2 is installed between the top of rod string 3 and the junction of polished rod eye 1, makes rod string 3 not with hanging
Device 1 of restricting is conductive.The negative electrode of dc source 14 is connected on flowline logical 5, the plus earth of dc source 14, the tail end of oil pipe 10
With sleeve pipe 11 by contact conducting, make electricity be transmitted to from the upper end of oil pipe 10 through conductor 13 on sleeve pipe 11, then through the earth with it is straight
The anode for flowing power supply 14 forms closed-loop path.The side oil-out connection flow line of flowline logical 5, is connected on flow line
Insulating element, electricity is set to be blocked at insulating element, electric current will not flow away along flow line, allow line flows of the electric current according to design
It is dynamic, described insulating element is close lead to flowline 5 junction.
Other downhole tools, such as packer instrument can also be connected on oil pipe 10, the downhole tool of institute's tripping in will not
Make oil pipe 10 conductive with sleeve pipe 11, ensure that electric current flows away by the circuit of design.
Most upper one of rod string 3 is referred to as polished rod, its surface relatively light be easy to sealer fitted seal, make the liquid of extraction
Stream can only lead to the oil-out outflow of 5 side from flowline.
The utility model is also suitable for coal bed gas well water pumping gas production.If inclined shaft, the oil pipe 10 of the bottom of oil well pump 12 has
After certain length, the tail end of oil pipe 10 can just contact with sleeve pipe 11, avoid the need for installing conductor 13.
In summary, the utility model is by the way that the negative electrode of dc source 14 is connected on flowline logical 5 by wire, directly
The plus earth of power supply 14 is flowed, after circuit communication, rod string 3, oil pipe 10, sleeve pipe 11 and downhole tool are thus cathodically polarised, and are made
Rod string 3, oil pipe 10 and sleeve pipe 11 obtain complete cathodic protection, so as to prevent rod string 3, oil pipe 10, sleeve pipe 11
And downhole tool is corroded.Therefore, the utility model is overcome present in the existing aseptic technic used in pumpingh well not
Foot, can prevent rod string, oil pipe, sleeve pipe, the downhole tool of pumpingh well to be corroded, can improve the sucker rod of pumpingh well, oil pipe,
Oil well pump, sleeve pipe, the service life of downhole tool, the workover treatment of pumpingh well is reduced, reduce cost for oil production, improve the warp of oil well
Ji benefit.
Embodiment of the present utility model is the foregoing is only, is not intended to limit the scope of protection of the utility model.It is all
Made within spirit of the present utility model and principle any modification, equivalent substitution and improvements, extension etc., are all contained in this reality
With in new protection domain.
Claims (10)
1. a kind of pumpingh well impressed current method anti-corrosive apparatus, it is characterised in that including polished rod eye (1), rod string (3), fuel-displaced
Pipe logical (5), oil pipe (10), sleeve pipe (11), oil well pump (12) and dc source (14), its middle sleeve (11) are arranged in pit shaft,
Oil well pump (12) is installed afterwards in tripping in sleeve pipe (11) on the oil pipe (10), top and the described sleeve pipe (11) of the oil pipe (10)
Insulation connection, the bottom that the flowline leads to (5) are connected with the oil pipe (10), rod string (3) the tripping in oil pipe (10)
Interior and bottom is connected with the piston of the oil well pump (12), and the top of the rod string (3) leads to (5) through the flowline
Insulate and connect with polished rod eye (1), the polished rod eye (1) is connected with oil pumper, and interval installation is multiple on the oil pipe (10) does not lead
Electric centralizer (9), the negative electrode of the dc source (14) are connected to flowline and led on (5), plus earth, the oil pipe (10)
Tail end by contacting conducting, makes electric current be transmitted to from the upper end of oil pipe (10) through tail end on sleeve pipe (11), then pass through with sleeve pipe (11)
The anode of the earth and dc source (14) forms closed-loop path.
2. pumpingh well impressed current method anti-corrosive apparatus according to claim 1, it is characterised in that the tail of the oil pipe (10)
End installation conductor (13), the outside of the conductor (13) contacts with sleeve pipe (11), and the conductor (13) is by oil pipe (10)
The conductance of tail end enters sleeve pipe (11).
3. pumpingh well impressed current method anti-corrosive apparatus according to claim 1, it is characterised in that the flowline leads to (5)
Side be provided with oil-out, the oil-out is connected by insulating element with flow line.
4. pumpingh well impressed current method anti-corrosive apparatus according to claim 1, it is characterised in that described sleeve pipe (11) it is upper
Portion's installation set pipe connection (8), the top connection hanger (6) of the oil pipe (10), the top of the oil pipe (10) passes through
Hanger (6) is suspended in described sleeve pipe attachment means (8), is pacified between the hanger (6) and described sleeve pipe attachment means (8)
Insulating cylinder (7) is filled, the bottom that the flowline leads to (5) is connected with the hanger (6).
5. pumpingh well impressed current method anti-corrosive apparatus according to claim 4, it is characterised in that described sleeve pipe attachment means
(8) side is provided with valve, and the valve is used for the pressure for controlling sleeve pipe (11).
6. pumpingh well impressed current method anti-corrosive apparatus according to claim 4, it is characterised in that described sleeve pipe attachment means
(8) being provided with prevents the antifleeing mechanism of the oil pipe (10) play.
7. pumpingh well impressed current method anti-corrosive apparatus according to claim 4, it is characterised in that the flowline leads to (5)
Bottom be connected by flange with described sleeve pipe attachment means (8), between the flange and sleeve pipe connection device (8) be provided with insulation
Part.
8. pumpingh well impressed current method anti-corrosive apparatus according to claim 4, it is characterised in that the insulating cylinder (7) is
Pyramidal structure and with the hanger (6) and described sleeve pipe attachment means (8) cone match.
9. pumpingh well impressed current method anti-corrosive apparatus according to claim 1, it is characterised in that the rod string (3)
Top connected through the insulation of sealer (4) and polished rod eye (1), the sealer (4) be located at the upper of the flowline logical (5)
The top that side and bottom lead to (5) with the flowline is connected.
10. pumpingh well impressed current method anti-corrosive apparatus according to claim 1, it is characterised in that the rod string (3)
Top and the polished rod eye (1) junction between install insulator (2), rod string (3) is not led with polished rod eye (1)
Electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720490366.0U CN206972203U (en) | 2017-05-04 | 2017-05-04 | Pumpingh well impressed current method anti-corrosive apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720490366.0U CN206972203U (en) | 2017-05-04 | 2017-05-04 | Pumpingh well impressed current method anti-corrosive apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN206972203U true CN206972203U (en) | 2018-02-06 |
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ID=61412979
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720490366.0U Active CN206972203U (en) | 2017-05-04 | 2017-05-04 | Pumpingh well impressed current method anti-corrosive apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313721A (en) * | 2017-05-04 | 2017-11-03 | 中石油煤层气有限责任公司 | Pumpingh well impressed current method anti-corrosive apparatus |
-
2017
- 2017-05-04 CN CN201720490366.0U patent/CN206972203U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313721A (en) * | 2017-05-04 | 2017-11-03 | 中石油煤层气有限责任公司 | Pumpingh well impressed current method anti-corrosive apparatus |
| CN107313721B (en) * | 2017-05-04 | 2024-02-20 | 中石油煤层气有限责任公司 | External current method anticorrosion device for pumping well |
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