CN209040766U - Pumpingh well impressed current method prevents from pumping tube inner wall corrosion device - Google Patents
Pumpingh well impressed current method prevents from pumping tube inner wall corrosion device Download PDFInfo
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- CN209040766U CN209040766U CN201821910833.1U CN201821910833U CN209040766U CN 209040766 U CN209040766 U CN 209040766U CN 201821910833 U CN201821910833 U CN 201821910833U CN 209040766 U CN209040766 U CN 209040766U
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Abstract
Pumpingh well impressed current method prevents from pumping tube inner wall corrosion device, the top installation set pipe connection of casing, on oil pipe after installation oil well pump in tripping in casing, the top of oil pipe is suspended on casing connection device by hanger, the logical lower part of flowline connects gland, gland is connect with casing connection device, in rod string tripping in oil pipe, the piston of the lower part connection oil well pump of rod string, the lower part of sealer is connect with the top that flowline leads to, there is oil outlet in the logical left side of flowline, non-conductive centralizer is installed at interval on oil pipe, dead ring is installed between hanger and casing connection device, the cathode of DC power supply is connected after gland with the upper end of oil pipe, the tail end of oil pipe is with casing by contacting conducting, hoop is installed outside the logical right side valve of flowline, insulative head is installed in the outer end of hoop, in insulative head In be inserted into anode stub, between anode stub and insulative head guarantee seal and insulate, the anode of DC power supply is connected on anode stub.
Description
Technical field
The utility model is the anti-corrosive apparatus on oil field pumping well, is that a kind of pumpingh well impressed current method prevents from pumping oil pipe
Inner wall corrosion device.
Background technique
All there is etching problem in sucker rod, oil pipe, oil well pump, casing, the downhole tool of some pumpingh wells, prevent at present
There are many kinds of the measures for stating corrosion, but is all that individually a kind of tool carries out anti-corrosion to it, such as Chinese patent 209203225015
" high pressure polyethylene antisepsis oil pipe " is exactly that can only be unable to anti-corrosion to other tools in well, for another example Chinese patent to oil pipe anti-corrosive
2011201477633 " a kind of anticorrosion sucker rods ", and pumping rod anti-corrosive can only cannot prevent other tools in well
Corruption, Chinese patent 20920430074 " the long anti-casing corrosion Well-cleaning protection device of tail pipe " for another example, and can only to casing tube anti-corrosive,
Anti-corrosion is unable to other tools in well.There are limitations for above-mentioned anti-corrosion measure, so, the sucker rod of pumpingh well, oil pipe, oil pumping
Pump, casing, downhole tool still have etching problem, cause sucker rod, oil pipe, oil well pump, casing, the downhole tool of pumpingh well
Service life it is short, need frequent workover treatment, cost for oil production is high, deficiency in economic performance.To solve the above-mentioned problems, technical staff
Having developed impressed current method prevents from pumping oil pipe corrosion device, as Chinese patent application 2017103104307 " is powered on outside pumpingh well
Stream method anti-corrosive apparatus ", it due to inlet valve, the delivery valve alternation switch on the oil well pump of oil pipe lower part, prevent this device can only
The only oil-pipe external wall of pumpingh well, oil well pump outer wall, downhole tool corrosion, cannot prevent the corruption of the tube inner wall on oil well pump
Erosion.
Summary of the invention
The purpose of this utility model is to design a kind of pumpingh well impressed current method to prevent from pumping tube inner wall corrosion device, gram
Take above-mentioned there are problem, prevent the corrosion of the tube inner wall on oil well pump, improve the sucker rod of pumpingh well, oil pipe, oil well pump,
The service life of downhole tool reduces the workover treatment of pumpingh well, reduces cost for oil production, improves the economic benefit of oil well.
Purpose of the utility model is realized as follows: leading to including rod string, sealer, flowline, hanger, insulation
Ring, casing connection device, non-conductive centralizer, oil pipe, casing, oil well pump, hoop, DC power supply, gland, casing are mounted on
In pit shaft, the top installation set pipe connection of casing, on oil pipe after installation oil well pump in tripping in casing, the top of oil pipe connects
Hanger is connect, the top of oil pipe is suspended on casing connection device by hanger, between hanger and casing connection device
Dead ring is installed, the top on the top and oil pipe that make casing is non-conductive, and the logical lower part of flowline connects gland, and gland and casing connect
Connection device connection, in rod string tripping in oil pipe, the piston of the lower part connection oil well pump of rod string, the lower part of sealer with go out
There are oil outlet in the logical top connection of oil pipe, the logical left side of flowline, and non-conductive centralizer is installed at interval on oil pipe, makes oil pipe
Not with casing-contact in addition to tail end, the tail end of oil pipe is with casing by contacting conducting, installation outside the logical right side valve of flowline
Hoop installs insulative head in the outer end of hoop, guarantees sealing between insulative head and hoop, anode is inserted into insulative head
Stick guarantees to seal and insulate between anode stub and insulative head, and the anode of DC power supply is connected on anode stub, and anode stub is by electric current
It is transmitted to flowline to lead in interior oil liquid, the cathode of DC power supply is connected after gland with the upper end of oil pipe.
Conductor is installed in the tail end of oil pipe, the outside of conductor and casing-contact, conductor is by the conductance of oil pipe tail end
Enter casing.
The beneficial effects of the utility model are: the cathode of DC power supply and the upper end of oil pipe are connected, the anode of DC power supply
It is connected on anode stub, anode stub leads to flowline is electrically communicated in interior oil liquid, and after circuit communication, rod string, oil pipe are negative
Pole polarization, makes rod string, tube inner wall obtain complete cathodic protection, to prevent rod string, tube inner wall rotten
Erosion.Therefore, the utility model overcomes deficiency present in the existing aseptic technic used in pumpingh well, can prevent pumpingh well
Rod string, tube inner wall be corroded, can improve the sucker rod of pumpingh well, the service life of oil pipe, oil well pump, reduce oil pumping
The workover treatment of well reduces cost for oil production, improves the economic benefit of oil well.
Detailed description of the invention
Fig. 1 is the assembling schematic diagram of the utility model embodiment.
Specific embodiment
The utility model embodiment is illustrated below with reference to Fig. 1.
As seen from Figure 1, the embodiments of the present invention include rod string 1, sealer 2, flowline logical 3, hanger 4,
Dead ring 5, casing connection device 6, non-conductive centralizer 7, oil pipe 8, casing 9, oil well pump 10, hoop 12, anode stub 13, absolutely
Edge head 14, DC power supply 15, gland 16, casing 9 are mounted in pit shaft, the top installation set pipe connection 6 of casing 9, in oil
On pipe 8 after installation oil well pump 10 in tripping in casing 9, the top of oil pipe 8 connects hanger 4, and the top of oil pipe 8 passes through hanger 4
Be suspended on casing connection device 6, dead ring 5 be installed between hanger 4 and casing connection device 6, make the top of casing 9 with
The top of oil pipe 8 is non-conductive, and the lower part of flowline logical 3 connects gland 16, and gland 16 is connect with casing connection device 6, sucker rod
In 1 tripping in oil pipe 8 of column, the piston of the lower part of rod string 1 connection oil well pump 10, the lower part of sealer 2 and flowline lead to 3 it is upper
There is oil outlet in the left side of portion's connection, flowline logical 3, and non-conductive centralizer 7 is installed at interval on oil pipe 8, makes oil pipe 8 except tail end
It is not contacted outside with casing 9, the tail end of oil pipe 8 is with casing 9 by contacting conducting, the outer installation card of the right side valve of flowline logical 3
Head 12 is bound round, insulative head 14 is installed in the outer end of hoop 12, guarantees sealing between insulative head 14 and hoop 12, in insulative head 14
In be inserted into anode stub 13, between anode stub 13 and insulative head 14 guarantee seal and insulate, the anode of DC power supply 15 is connected to sun
On pole stick 13, anode stub 13 is delivered current in the oil liquid in flowline logical 3, after the cathode of DC power supply 15 passes through gland 16
It is connected with the upper end of oil pipe 8 and (is connected on hanger in figure, rail is transmitted by hanger, oil pipe can also be connected directly between
On).There is sealing device at the position that the cathode cable of DC power supply 15 passes through gland 16, leak the liquid in gland 16 will not.
It insulate between the cathode cable and gland 16 of DC power supply 15.
Conductor 11 is installed in the tail end of oil pipe 8, the outside of conductor 11 contacts with casing 9, and conductor 11 is by 8 tail of oil pipe
The conductance at end enters casing 9.
Rod string 1 most upper one is known as polished rod, and polished rod passes through sealer 2, and connection one is nonconducting non-under polished rod
Metal joint makes electric current will not be through polished rod to upstream.The surface of polished rod is more smooth to be sealed convenient for cooperating with sealer 2, makes to extract out
Liquid stream can only lead to from flowline 3 side oil outlet outflow.
The utility model is also suitable for coal bed gas well water pumping gas production.
Valve is installed in the side of casing connection device 6, controls the pressure in casing 9.
If it is inclined shaft, after the oil pipe 8 of 10 lower part of oil well pump has certain length, the tail end of oil pipe 8 can connect with casing 9
Touching, there is no need to install conductor 11.
If the lower part of oil pipe 8 is further connected with other downhole tools, connect downhole tool also can anti-corrosion.
The side of the flowline logical 3 is equipped with oil outlet, and the oil outlet is connect by insulating element with flow line.
The side of casing connection device 6 is equipped with valve, and the valve is used to control the pressure of casing 9.Described sleeve pipe connection
Device 6 is equipped with and prevents the antifleeing mechanism of 4 play of hanger (antifleeing mechanism guarantees between hanger 4 and casing connection device 6 not
It is conductive), when upwards thrust is greater than the weight of oil pipe 8, hanger 4 will not upward play.The lower part of flowline logical 3 passes through clip
It is connect with gland 16, gland 16 and casing connection device 6 use flanged joint.
Claims (2)
1. pumpingh well impressed current method prevents from pumping tube inner wall corrosion device, including it is rod string (1), sealer (2), fuel-displaced
Manage logical (3), hanger (4), dead ring (5), casing connection device (6), non-conductive centralizer (7), oil pipe (8), casing (9),
Oil well pump (10), hoop (12), DC power supply (15), gland (16), casing (9) are mounted in pit shaft, the top of casing (9)
Installation set pipe connection (6), oil well pump (10) are installed on oil pipe (8), and tripping in casing (9) is interior afterwards, and the top of oil pipe (8) connects
It connects hanger (4), the top of oil pipe (8) is suspended on casing connection device (6) by hanger (4), in hanger (4) and set
Dead ring (5) are installed between pipe connection (6), keep the top of casing (9) and the top of oil pipe (8) non-conductive, flowline is logical
(3) lower part connects gland (16), and gland (16) is connect with casing connection device (6), in rod string (1) tripping in oil pipe (8),
The lower part of the piston of lower part connection oil well pump (10) of rod string (1), sealer (2) is connect with the top that flowline leads to (3),
There is oil outlet in the left side that flowline leads to (3), and non-conductive centralizer (7) is installed at interval on oil pipe (8), makes oil pipe (8) except tail
End is outer not to be contacted with casing (9), and the tail end of oil pipe (8) leads to the right side valve of (3) by contacting conducting, flowline with casing (9)
Hoop (12) are installed outdoors, it is characterized in that: insulative head (14) are installed in the outer end of hoop (12), insulative head (14) and clip
Guarantee sealing between head (12), in the inner insertion anode stub (13) of insulative head (14), is protected between anode stub (13) and insulative head (14)
Card is sealed and is insulated, and the anode of DC power supply (15) is connected on anode stub (13), and anode stub (13) delivers current to fuel-displaced
It manages in the oil liquid in logical (3), the cathode of DC power supply (15) passes through gland (16) and connects afterwards with the upper end of oil pipe (8).
2. pumpingh well impressed current method according to claim 1 prevents from pumping tube inner wall corrosion device, it is characterized in that:
The tail end of oil pipe (8) installs conductor (11), and the outside of conductor (11) is contacted with casing (9), and conductor (11) is by oil pipe (8)
The conductance of tail end enters casing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821910833.1U CN209040766U (en) | 2018-11-20 | 2018-11-20 | Pumpingh well impressed current method prevents from pumping tube inner wall corrosion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821910833.1U CN209040766U (en) | 2018-11-20 | 2018-11-20 | Pumpingh well impressed current method prevents from pumping tube inner wall corrosion device |
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| Publication Number | Publication Date |
|---|---|
| CN209040766U true CN209040766U (en) | 2019-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821910833.1U Active CN209040766U (en) | 2018-11-20 | 2018-11-20 | Pumpingh well impressed current method prevents from pumping tube inner wall corrosion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957444A (en) * | 2021-09-14 | 2022-01-21 | 陕西省建文能源科技有限公司 | Intelligent impressed current anti-corrosion system for oil and gas well |
-
2018
- 2018-11-20 CN CN201821910833.1U patent/CN209040766U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957444A (en) * | 2021-09-14 | 2022-01-21 | 陕西省建文能源科技有限公司 | Intelligent impressed current anti-corrosion system for oil and gas well |
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