CN103014723A - Corrosion controller of oil well production equipment and sucker rod employing controller - Google Patents
Corrosion controller of oil well production equipment and sucker rod employing controller Download PDFInfo
- Publication number
- CN103014723A CN103014723A CN2013100086991A CN201310008699A CN103014723A CN 103014723 A CN103014723 A CN 103014723A CN 2013100086991 A CN2013100086991 A CN 2013100086991A CN 201310008699 A CN201310008699 A CN 201310008699A CN 103014723 A CN103014723 A CN 103014723A
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- CN
- China
- Prior art keywords
- control device
- corrosion control
- pipe nipple
- sacrificial anode
- oil well
- 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.)
- Granted
Links
- 230000007797 corrosion Effects 0.000 title claims abstract description 51
- 238000005260 corrosion Methods 0.000 title claims abstract description 51
- 239000003129 oil well Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000011084 recovery Methods 0.000 claims description 29
- 210000002445 nipple Anatomy 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010405 anode material Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- 230000010287 polarization Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 238000005536 corrosion prevention Methods 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000003260 anti-sepsis Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention belongs to the field of corrosion protection of a metal material, and relates to a corrosion controller of oil well production equipment and a sucker rod employing the controller. The corrosion controller of the oil well production equipment comprises a short section, a sacrificial anode section and a sacrificial anode protecting cover, wherein outer threads are arranged at two ends of the short section; an upsetting flange is respectively arranged at two ends of the short section; the sacrificial anode section is tightly matched with the short section; and a gap or a round hole is arranged on the sacrificial anode protecting cover. Compared with the prior art, the oil well corrosion controller is high in cost performance; the production period of the oil well is increased; the maintenance charge is reduced; the corrosion controller has good application prospect in anti-corrosive engineering of an oil well pipe, a rod, and a pump; the oil well corrosion controller is reasonable in structure design, significant in effect, simple and feasible to install, and can be designed according to the specific condition of the site; and later maintenance is not needed within a production period after being installed, and the adjacent facilities are not disturbed when working.
Description
Technical field
The invention belongs to the corrosion prevention field of metallic substance, particularly, relate to oil well oil production equipment corrosion control device on a kind of oil field and adopt the sucker rod of this controller.
Background technology
In the Development and Production in oil field, the corrosion of oil well is a major issue of the normal exploitation in restriction oil field always.Along with going deep into of water flooding, a lot of areas enter high water-cut development period.Owing to contain corrosive medium in the middle of the water quality, the corrosion of oil well tool equipment can occur, often cause pump to leak, pipe leaks, rod tube is disconnected takes off and the accident such as subsurface tool inefficacy, bring very big harm to production, and cause huge financial loss.
Existing oil well corrosion prevention measure all exists certain limitation in varying degrees: use the materials such as solidity to corrosion glass reinforced plastic, carbon fiber to make the oil production equipments such as sucker rod, although preservative effect is better, but its cost is relatively high, is not suitable for large-scale promotion and uses; Oil pipe or sucker rod surface is used coating, chemical plating or carried out the surface treatment such as nitriding, cause easily the locality corrosion, exist in the oil well of eccentric wear particularly remarkable; The corrosion of using the chemical agent such as inhibiter to carry out oil well is administered must be pointed, need to inhibiter be selected for oil well form of corrosion and the characteristics of different blocks, and it is expensive larger that the scene adds for a long time, and waste time and energy; The utility model patent (ZL:200820064420.6) that the name of Chengdu Shuer Machinery Manufacturing Co., Ltd. is called cathode protector of oil water well has at first proposed to adopt on the sucker rod the fixedly way of sacrificial anode, but does not consider in this patent the situation that the sacrificial anode bulk comes off may occur in the use procedure; The name of Jiyuan City petroleum machinery company limited is called the utility model patent (ZL:201120031491.8) of cathode protector of sucker rod and has mentioned a kind of preferably method, namely add the stainless steel protection cover in the sacrificial anode outside, but this patent together with the common problem that exists of previous patent is: that adopts is single sacrificial anode material, limited to the protection effect of the parts such as sucker rod; First has more broadly mentioned the distance between the cathodic protector in two patents, and second mentioned that not determining of the best mounting distance of therefore considering from economic and efficient aspect is fuzzyyer; And adopt in two patents sucker rod and non-at-scene in form commonly used, support the use at the scene middle meeting and have some problems.Therefore, be necessary to develop easily oil well corrosion control technology of a kind of more economic, effective, execute-in-place.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides the sucker rod that a kind of well recovery is equipped the corrosion control device and adopted this controller.
For achieving the above object, the present invention adopts following scheme:
Well recovery equipment corrosion control device comprises pipe nipple, sacrificial anode section and galvanic anode protection guard shield; The pipe nipple two ends have outside screw, and pipe nipple respectively is provided with a thick flange of pier near the place, two ends; Sacrificial anode section and pipe nipple closely cooperate, and the sacrificial protection enclosure is located in the sacrificial anode section, is provided with slit or circular hole at the galvanic anode protection guard shield.
Preferably, sacrificial anode section adopts composite anode materials, and main body is Sacrificial Anode, and outside wall surface covers thick layer 0.5～1.0mm sacrificial magnesium alloy anode.
Preferably, sacrificial anode section is made of two semicolumn housings.
Preferably, the galvanic anode protection guard shield adopts steel pipe to process, and material is consistent or close with the pipe nipple material.
Preferably, two thick flanges of pier on galvanic anode protection guard shield and the pipe nipple are welded and fixed.
Preferably, the wide 8～12mm of gap joints on the galvanic anode protection guard shield, long 80～120mm; The slit evenly arranges 7 layers vertically, and two every layer, every layer edge, slit is uniform (it is angular distribution to be 180 degree) circumferentially, and the adjacent two layers slit is 90 degree phasing degree and arranges.
Preferably, Circularhole diameter is 8～12mm on the galvanic anode protection guard shield 3, and circular hole evenly arranges 33 layers vertically, and 2 every layer, every layer edge, slit is uniform (it is angular distribution to be 180 degree) circumferentially, and the adjacent two layers slit is 90 degree phasing degree and arranges.
Preferably, the one or both ends of pipe nipple are threaded with box cupling;
Preferably, pipe nipple adopts the standard steel sucker rod, and pipe nipple length is at 800～1200mm.
Use the sucker rod of above-mentioned well recovery equipment corrosion control device, in the scope of sucker rod contact Produced Liquid, begin to connect first corrosion control device from bottommost, then keeping at a certain distance away connects well recovery equipment corrosion control device, uses box cupling that well recovery equipment corrosion control device and sucker rod are connected in series during connection.
Preferably; the spacing distance of adjacent two controllers adopts Element BEM to calculate; need to be take oil production equipment material and sacrificial anode material in the computation process polarization curve in corresponding oil well produced liquid as final condition, take the equipment material surface current potential that needs protection minimum as-800mV (SCE) as criterion.
Well recovery equipment corrosion control device of the present invention has following advantage with respect to prior art:
1, with impressed current protection method, chemical agent protection method; the top coat antisepsis is compared, and this oil well corrosion control device cost performance is higher, increases the production cycle of oil well; reduce maintenance cost, in the antiseptic project of oil well pipe, bar, pump, have a good application prospect.
2, oil well corrosion control device reasonable in design, utilize the principle of composite sacrificial anode to carry out the corrosion prevention of the equipment such as oil well pipe, bar, pump in the semiclosed small space in the oil well, this device designs according to site specific, effect is remarkable, and install simple, within a production cycle, do not need later maintenance after installing, do not disturb contiguous facility during work.
Description of drawings
Fig. 1 a is that the well recovery equipment corrosion control device structure master of the embodiment of the invention one looks synoptic diagram;
Fig. 1 b is the well recovery equipment corrosion control device structural profile synoptic diagram of the embodiment of the invention one;
Fig. 1 c is A-A diagrammatic cross-section among Fig. 1 a;
Fig. 1 d is B-B diagrammatic cross-section among Fig. 1 b;
Fig. 1 e is the well recovery equipment corrosion control device axle side synoptic diagram of the embodiment of the invention one;
Fig. 2 a is that the well recovery equipment corrosion control device structure master of the embodiment of the invention two looks synoptic diagram;
Fig. 2 b is the well recovery equipment corrosion control device structural profile synoptic diagram of the embodiment of the invention two;
Fig. 2 c is the well recovery equipment corrosion control device axle side synoptic diagram of the embodiment of the invention two;
Among the figure: 1, pipe nipple, 2, sacrificial anode section, 3, the galvanic anode protection guard shield, 4, box cupling, 5, the thick flange of pier.
Embodiment
Below in conjunction with accompanying drawing the present invention is made and to further specify.
Such as Fig. 1 a, Fig. 1 b, Fig. 1 c, Fig. 1 d, shown in Fig. 1 e, well recovery equipment corrosion control device comprises pipe nipple 1, sacrificial anode section 2 and galvanic anode protection guard shield 3; Pipe nipple 1 adopts the standard steel sucker rod, and sucker rod model, material, diameter etc. determine that according to field condition pipe nipple 1 length is selected between 800～1200mm; Pipe nipple 1 two ends have outside screw, and wherein an end is threaded with the standard steel box cupling 4 that is complementary with the pipe nipple specification; Pipe nipple 1 respectively is provided with a thick flange 5 of pier near the place, two ends; Sacrificial anode section 2 adopts composite anode materials, and main body is the large Sacrificial Anode of electrical capacity, and outside wall surface covers the stronger sacrificial magnesium alloy anode of thick layer 0.5～1.0mm electrochemical activity; Sacrificial anode section 2 closely cooperates with the straight bar section of pipe nipple 1, to realize good electrical connection between the two; Sacrificial anode section 2 is made of two semicolumn housings; Galvanic anode protection guard shield 3 adopts steel pipe to process material or close be advisable consistent with pipe nipple 1 material; In galvanic anode protection guard shield 3 circumferential uniform elongated slits, the wide 8～12mm of gap joints, long 80～120mm; The slit evenly arranges 7 layers vertically, and two every layer, every layer edge, slit is uniform (it is angular distribution to be 180 degree) circumferentially, and the adjacent two layers slit is 90 degree phasing degree and arranges; Between two thick flanges of pier on galvanic anode protection guard shield 3 and the pipe nipple by being welded and fixed.
The content of present embodiment and embodiment 1 is basic identical; difference is mainly being offered the circular hole that diameter is 8～12mm in the galvanic anode protection guard shield 3 of described well recovery equipment corrosion control device; circular hole evenly arranges 33 layers vertically; 2 every layer; every layer edge, slit is uniform (it is angular distribution to be 180 degree) circumferentially, and the adjacent two layers slit is 90 degree phasing degree and arranges.
Use the sucker rod of above-mentioned well recovery equipment corrosion control device, in the scope of sucker rod contact Produced Liquid, begin to connect first corrosion control device from bottommost, then keeping at a certain distance away connects second corrosion control device, uses box cupling 4 that well recovery equipment corrosion control device and sucker rod are connected in series during connection.
The spacing distance of adjacent two controllers adopts Element BEM to calculate; in the computation process take material of sucker rod and sacrificial anode material the polarization curve in corresponding oil well produced liquid as final condition; take the sucker rod surface potential that needs protection minimum as-800mV (SCE) as criterion, calculate the spacing between adjacent two corrosion control devices.
Claims (10)
1. a well recovery equipment corrosion control device comprises pipe nipple, sacrificial anode section and galvanic anode protection guard shield; It is characterized in that: the pipe nipple two ends have outside screw, and pipe nipple respectively is provided with a thick flange of pier near the place, two ends; Sacrificial anode section and pipe nipple closely cooperate, and the sacrificial protection enclosure is located in the sacrificial anode section, is provided with slit or circular hole at the galvanic anode protection guard shield.
2. well recovery according to claim 1 is equipped the corrosion control device, it is characterized in that: sacrificial anode section adopts composite anode materials, and main body is Sacrificial Anode, and outside wall surface covers thick layer 0.5～1.0mm sacrificial magnesium alloy anode.
3. described well recovery is equipped the corrosion control device according to claim 1-2, and it is characterized in that: sacrificial anode section is made of two semicolumn housings.
4. described well recovery is equipped the corrosion control device according to claim 1-3, it is characterized in that: the galvanic anode protection guard shield adopts steel pipe to process, and material is consistent with the pipe nipple material.
5. described well recovery is equipped the corrosion control device according to claim 1-4, and it is characterized in that: two thick flanges of pier on galvanic anode protection guard shield and the pipe nipple are welded and fixed.
6. described well recovery equipment corrosion control device is characterized in that: the wide 8～12mm of gap joints on the galvanic anode protection guard shield, long 80～120mm according to claim 1-5; The slit evenly arranges 7 layers vertically, and two every layer, every layer slit is along circumferentially uniform, and the adjacent two layers slit is 90 degree phasing degree and arranges.
7. described well recovery is equipped the corrosion control device according to claim 1-6; it is characterized in that: Circularhole diameter is 8～12mm on the galvanic anode protection guard shield 3, and circular hole evenly arranges 33 layers vertically, 2 every layer; every layer slit is along circumferentially uniform, and the adjacent two layers slit is 90 degree phasing degree and arranges.
8. described well recovery is equipped the corrosion control device according to claim 1-7, and it is characterized in that: the one or both ends of pipe nipple are threaded with box cupling; Pipe nipple adopts the standard steel sucker rod, and pipe nipple length is at 800～1200mm.
9. application rights requires the sucker rod of the well recovery equipment corrosion control device of 1-9, it is characterized in that: in the scope of sucker rod contact Produced Liquid, begin to connect first corrosion control device from bottommost, then keeping at a certain distance away connects well recovery equipment corrosion control device, uses box cupling that well recovery equipment corrosion control device and sucker rod are connected in series during connection.
10. well recovery according to claim 9 is equipped corrosion control device using method; it is characterized in that: the spacing distance of adjacent two controllers adopts Element BEM to calculate; need to be take oil production equipment material and sacrificial anode material in the computation process polarization curve in corresponding oil well produced liquid as final condition, take the equipment material surface current potential that needs protection minimum as-800mV (SCE) as criterion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310008699.1A CN103014723B (en) | 2013-01-10 | 2013-01-10 | Corrosion controller of oil well production equipment and sucker rod employing controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310008699.1A CN103014723B (en) | 2013-01-10 | 2013-01-10 | Corrosion controller of oil well production equipment and sucker rod employing controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103014723A true CN103014723A (en) | 2013-04-03 |
| CN103014723B CN103014723B (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310008699.1A Expired - Fee Related CN103014723B (en) | 2013-01-10 | 2013-01-10 | Corrosion controller of oil well production equipment and sucker rod employing controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103014723B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674228A (en) * | 2015-02-02 | 2015-06-03 | 深圳市燃气集团股份有限公司 | Detection method for cathode protection of directionally drilled and crossed pipeline |
| CN104805448A (en) * | 2015-05-06 | 2015-07-29 | 青岛钢研纳克检测防护技术有限公司 | Electric protector for injection well oil tube and preparation method thereof |
| CN105386062A (en) * | 2015-12-16 | 2016-03-09 | 中国海洋石油总公司 | Protection cover of auxiliary anodes |
| CN106401501A (en) * | 2016-11-30 | 2017-02-15 | 李党生 | Multifunctional pipe and rod protection device and manufacturing method thereof |
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|---|---|---|---|---|
| US4688828A (en) * | 1986-04-02 | 1987-08-25 | Shaffer Donald U | Tubing joint for corrosion protection |
| US5547020A (en) * | 1995-03-06 | 1996-08-20 | Mcclung-Sable Partnership | Corrosion control well installation |
| US20030140977A1 (en) * | 2000-11-10 | 2003-07-31 | Hugues Berton | Cathodic protection device for flexible pipes |
| CN2750033Y (en) * | 2004-12-03 | 2006-01-04 | 樊志坚 | Deflection abrasion-preventing centralizer for sucker rod |
| CN201137466Y (en) * | 2007-10-10 | 2008-10-22 | 程佑富 | Helical type pumping rod anti-corrosive wear-resistant device |
| CN101397670A (en) * | 2007-09-30 | 2009-04-01 | 濮阳市信宇石油机械化工有限公司 | Sacrificial anode and protective cathode-pumping rod anti-corrosive apparatus |
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| CN102618874A (en) * | 2012-04-24 | 2012-08-01 | 中国石油天然气股份有限公司 | Composite sacrificial anode on outer wall of bushing |
| CN202558942U (en) * | 2012-05-29 | 2012-11-28 | 陕西鼎和源瑞环境工程有限公司 | High-efficiency oil tube anode protector |
| CN203049042U (en) * | 2013-01-10 | 2013-07-10 | 中国石油大学(华东) | Oil extraction equipment corrosion controller of oil well and oil pumping rod adopting same |
-
2013
- 2013-01-10 CN CN201310008699.1A patent/CN103014723B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688828A (en) * | 1986-04-02 | 1987-08-25 | Shaffer Donald U | Tubing joint for corrosion protection |
| US5547020A (en) * | 1995-03-06 | 1996-08-20 | Mcclung-Sable Partnership | Corrosion control well installation |
| US20030140977A1 (en) * | 2000-11-10 | 2003-07-31 | Hugues Berton | Cathodic protection device for flexible pipes |
| CN2750033Y (en) * | 2004-12-03 | 2006-01-04 | 樊志坚 | Deflection abrasion-preventing centralizer for sucker rod |
| CN101397670A (en) * | 2007-09-30 | 2009-04-01 | 濮阳市信宇石油机械化工有限公司 | Sacrificial anode and protective cathode-pumping rod anti-corrosive apparatus |
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| CN201137466Y (en) * | 2007-10-10 | 2008-10-22 | 程佑富 | Helical type pumping rod anti-corrosive wear-resistant device |
| CN102618874A (en) * | 2012-04-24 | 2012-08-01 | 中国石油天然气股份有限公司 | Composite sacrificial anode on outer wall of bushing |
| CN202558942U (en) * | 2012-05-29 | 2012-11-28 | 陕西鼎和源瑞环境工程有限公司 | High-efficiency oil tube anode protector |
| CN203049042U (en) * | 2013-01-10 | 2013-07-10 | 中国石油大学(华东) | Oil extraction equipment corrosion controller of oil well and oil pumping rod adopting same |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674228A (en) * | 2015-02-02 | 2015-06-03 | 深圳市燃气集团股份有限公司 | Detection method for cathode protection of directionally drilled and crossed pipeline |
| CN104674228B (en) * | 2015-02-02 | 2018-01-23 | 深圳市燃气集团股份有限公司 | A kind of detection method of directional drilling crossing pipeline cathode protection |
| CN104805448A (en) * | 2015-05-06 | 2015-07-29 | 青岛钢研纳克检测防护技术有限公司 | Electric protector for injection well oil tube and preparation method thereof |
| CN105386062A (en) * | 2015-12-16 | 2016-03-09 | 中国海洋石油总公司 | Protection cover of auxiliary anodes |
| CN105386062B (en) * | 2015-12-16 | 2017-10-27 | 中国海洋石油总公司 | A kind of protective cover of impressed current anode |
| CN106401501A (en) * | 2016-11-30 | 2017-02-15 | 李党生 | Multifunctional pipe and rod protection device and manufacturing method thereof |
| CN106401501B (en) * | 2016-11-30 | 2017-12-26 | 李党生 | Multi-functional tube rod protection device and its manufacture method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103014723B (en) | 2015-04-22 |
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