CN204898087U - Anticorrosive device of oil -field flooding pipeline inner wall - Google Patents
Anticorrosive device of oil -field flooding pipeline inner wall Download PDFInfo
- Publication number
- CN204898087U CN204898087U CN201520399931.3U CN201520399931U CN204898087U CN 204898087 U CN204898087 U CN 204898087U CN 201520399931 U CN201520399931 U CN 201520399931U CN 204898087 U CN204898087 U CN 204898087U
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- pressure
- connection line
- water
- replaceable
- anticorrosive
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Abstract
The utility model relates to an anticorrosive device of oil -field flooding pipeline inner wall includes at least that the front and back both ends of removable anticorrosive ware, removable anticorrosive ware are connected with first connection pipeline and second connection pipeline respectively, and the other end of first connection pipeline is connected with into water connection pipeline, and the other end that the pipeline is connected to the second is connected with out water connection pipeline, is equipped with into water high pressure ball valve on the connecting pipe line of intaking, is equipped with out water high pressure ball valve on the play water connecting pipe line, removable anticorrosive ware is formed through the pressure vessel flange seal concatenation by two high -pressure storage pressure vessel, is equipped with removable sacrificial anode in every high -pressure storage pressure vessel, and the one side at every high -pressure storage pressure vessel's top is equipped with the relief valve, simple structure when the positive pole to in the anticorrosive ware is changed, changes simply, and convenient operation can change by quick antianode, can be a large amount of when not influencing anticorrosive ware work saved the time of changing.
Description
Technical field
The utility model relates to oil-gas field corrosion and protection technical field, particularly relates to a kind of Oilfield Water Injection Pipelines inner wall anti-corrosive device.
Background technology
In water flooding process, inject water with waterflood-transmission line re-injection to reservoir, have high salinity owing to injecting glassware for drinking water.In addition containing corrosion factors such as dissolved oxygen, carbonic acid gas, hydrogen sulfide, sulphate reducing bacterias, under the compound action of the factors such as temperature, pressure, flow velocity and repeated stress, pipeline inner wall corrosion can be made to increase the weight of.
Galvanic protection is a kind of effective means of defence preventing tubing from corroding, but due to waterflood-transmission line internal diameter less, pressure is higher, cannot put into sacrificial anode material, and in actual production, this method is only for the protection against corrosion of pipeline external wall.
Utility model patent (CN104214468A) and utility model patent (CN204080109U) disclose a kind of external sacrificial anode and prevent pipeline inner wall corrosion device and method.This device, primarily of withstand voltage anode cavities, withstand voltage scalable conductor, high pressure hose short circuit and cable composition, being welded on bottom pipeline or lower side by pipe joint, changing anode when not stopping production.
In this patent, external sacrificial anode prevents pipeline inner wall corrosion device to be arranged on bottom pipeline, and withstand voltage anode cavities 7 is positioned at the bottom of this device, can there is following problem in application process:
(1) withstand voltage anode cavities internal corrosion medium does not flow, and the corrosion product of anode is easily deposited on anode surface, and reduce anode service efficiency, severe patient can cause anode surface passivation, and anode lost efficacy;
(2) owing to injecting water containing a large amount of silt, mechanical impurity, corrosion product, foulant etc., due to action of gravity, the withstand voltage anode cavities 7 being positioned at bottom is easily covered by above-mentioned substance or buries, and causes anode change difficulty.
Utility model content
In order to overcome the shortcoming of above-mentioned prior art, it is simple that the purpose of this utility model is to provide a kind of structure, easily to the Oilfield Water Injection Pipelines inner wall anti-corrosive device that the anode in corrosion-preventing device is changed.
In order to achieve the above object, the technical scheme that the utility model is taked is: a kind of Oilfield Water Injection Pipelines inner wall anti-corrosive device, at least comprise replaceable corrosion-preventing device, the rear and front end of described replaceable corrosion-preventing device is connected to the first connection line and the second connection line, the other end of the first described connection line is connected with into water connection line, the other end of described second connection line is connected with water outlet connection line, described water inlet connection line is provided with into water high-pressure ball valve, and described water outlet connection line is provided with water outlet high-pressure ball valve;
Described replaceable corrosion-preventing device is spliced by pressure container flange sealing by two high-pressure storage pressurized vessels, be provided with replaceable sacrificial anode in described each high-pressure storage pressurized vessel, the side at the top of described each high-pressure storage pressurized vessel is provided with pressure release valve.
Described each high-pressure storage pressurized vessel is respectively equipped with a replaceable sacrificial anode up and down.
Described high-pressure storage pressurized vessel is by Horizontal cylinder shape cylindrical shell, and the ring flange of the pressure container flange that Horizontal cylinder shape cylindrical shell one end is fixedly connected with dished end and is fixed on the Horizontal cylinder shape cylindrical shell the other end forms.
Described water inlet connection line is connected by the first high pressure flange with the first connection line, and described water outlet connection line is connected by the second high pressure flange with the second connection line.
The utility model adopts above technical scheme, has the following advantages, and structure is simple, when changing the anode in corrosion-preventing device, change simple, easy to operate, can change by antianode fast, the time saving replacing that can be a large amount of while not affecting corrosion-preventing device work.
Accompanying drawing explanation
Fig. 1: the utility model embodiment Oilfield Water Injection Pipelines inner wall anti-corrosive apparatus structure schematic diagram;
Fig. 2: the utility model embodiment back with water inlet line connection diagram;
Fig. 3: the utility model embodiment water outlet pipeline connection diagram;
Fig. 4: the replaceable corrosion-preventing device schematic diagram of the utility model embodiment;
Fig. 5: the replaceable corrosion-preventing device sectional view of the utility model embodiment.
In figure: 1. connection line of intaking; 2. water inlet high-pressure ball valve; 3. the first high pressure flange; 4. the first connection line; 5. replaceable corrosion-preventing device; 6. the second connection line; 7. the second high pressure flange; 8. water outlet high-pressure ball valve; 9. water outlet connection line; 10. high-pressure storage pressurized vessel; 11. replaceable sacrificial anodes; 12. pressure container flanges; 13. pressure release valves; 14. bolts hole; 15. third high pressure flanges; 16. waterflood-transmission lines; 17. the 4th high pressure flanges.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
Embodiment 1
As shown in Figure 1 and Figure 4, a kind of Oilfield Water Injection Pipelines inner wall anti-corrosive device, at least comprise replaceable corrosion-preventing device 5, the rear and front end of described replaceable corrosion-preventing device 5 is connected to the first connection line 4 and the second connection line 6, the other end of the first described connection line 4 is connected with into water connection line 1, the other end of described second connection line 6 is connected with water outlet connection line 9, described water inlet connection line 1 is provided with into water high-pressure ball valve 2, and described water outlet connection line 9 is provided with water outlet high-pressure ball valve 8;
Described replaceable corrosion-preventing device 5 is spliced by pressure container flange 12 sealing by two high-pressure storage pressurized vessels 10, replaceable sacrificial anode 11 is provided with in described each high-pressure storage pressurized vessel 10, the side at the top of described each high-pressure storage pressurized vessel 10 is provided with pressure release valve 13, and described replaceable sacrificial anode 11 selects China Patent No. to be replaceable sacrificial anode in a kind of replaceable sacrificial anode of ZL201420366187.2.
In the process of installing, as shown in Figures 2 and 3, water inlet connection line 1 with water outlet pipeline 9 respectively with waterflood-transmission line 16 seal welding and conducting, and water inlet connection line 1 is parallel with water outlet pipeline 9, water inlet high-pressure ball valve 2 is connected on water connection line 1 by third high pressure flange 15, and water outlet high-pressure ball valve 8 is connected on water outlet connection line 9 by the 4th high pressure flange 17.
In the process of work, open into water high-pressure ball valve 2 and water outlet high-pressure ball valve 8, water filling is by waterflood-transmission line 16, water inlet connection line 1 enters into replaceable corrosion-preventing device 5 and carries out rotproofing, waterflood-transmission line 16 is entered into by water outlet connection line 9 by the water filling after replaceable corrosion-preventing device 5 processes, complete rotproofing, when needing to change the replaceable sacrificial anode 11 in replaceable corrosion-preventing device 5, close water inlet high-pressure ball valve 2 and water outlet high-pressure ball valve 8, open pressure release valve 13 again and pressure release is carried out to the pressure in replaceable corrosion-preventing device 5, when pressure release is complete, manually unclamp the bolt in pressure container flange 12 upper bolt hole 14 as shown in Figure 5, two high-pressure storage pressurized vessels 10 separately, change to the replaceable sacrificial anode 11 in high-pressure storage pressurized vessel 10 respectively.Can find out, the utility model structure is simple, can change replaceable sacrificial anode 11, and it is convenient to change, and saves time.
Embodiment 2
In order to replaceable corrosion-preventing device 5 can the anticorrosion factor in the replaceable sacrificial anode 11 pairs of water fillings in pressure high-pressure storage pressurized vessel 10 better process, as shown in Fig. 1,3,5, each high-pressure storage pressurized vessel about 10 is respectively equipped with a replaceable sacrificial anode 11, described replaceable sacrificial anode 11, on the bottom being welded on high-pressure storage pressurized vessel 10 by its welding foot horizontal component or top.
Embodiment 3
In order to the pressure in replaceable corrosion-preventing device 5 is steady, and can not cause danger because of too high when installation, high-pressure storage pressurized vessel 10 described is as shown in figs. 1 and 3 by Horizontal cylinder shape cylindrical shell, the ring flange of the pressure container flange 12 that Horizontal cylinder shape cylindrical shell one end is fixedly connected with dished end and is fixed on the Horizontal cylinder shape cylindrical shell the other end forms, described dished end is hemispherical head, ellipsoidal head, butterfly end socket, one in spherical seal head, select dished end can reduce water filling to enter into high-pressure storage pressurized vessel 10 and carry out strong offset to the bottom of high-pressure storage pressurized vessel 10, also mitigate the pressure of water filling to high-pressure storage pressurized vessel 10 both sides.
Embodiment 4
In order to the convenience of convenient replaceable sacrificial anode 11, water inlet connection line 1 is as shown in figs. 1 and 3 connected by the first high pressure flange 3 with the first connection line 4, described water outlet connection line 9 is connected by the second high pressure flange 7 with the second connection line 6, in the process changed when the residual pressure in replaceable corrosion-preventing device 5 is drained, manually unload the first high pressure flange 3 and the second high pressure flange 7 separately to intake connection line 1 and the first connection line 4, water outlet connection line 9 and the second connection line 6, replaceable corrosion-preventing device 5 is separated with waterflood-transmission line 16.
A kind of Oilfield Water Injection Pipelines inner wall anti-corrosive device replacing options, comprises the following steps:
1) water inlet high-pressure valve 2 and water outlet high-pressure valve 8 is closed successively;
2) open pressure release valve 13, discharge the residual pressure in replaceable corrosion-preventing device 5;
3) the first high pressure flange 3, second high pressure flange 7 and pressure container flange 12 is manually unloaded;
4) the replaceable sacrificial anode 11 in high-pressure storage pressurized vessel 10 is changed;
5), after having changed replaceable sacrificial anode 11, again two high-pressure storage pressurized vessels 10 are installed by pressure container flange 12 splicing, after installation, the first high pressure flange 3, second high pressure flange 9 is installed, complete the replacing of corrosion-preventing device.
Can find out that the utility model provides structure by above-described embodiment simple, easy to operate and the kind Oilfield Water Injection Pipelines inner wall anti-corrosive device that can change the carrying out of the anode in corrosion-preventing device fast and replacing options, save replacing construction, ensure that the antiseptic property of corrosion-preventing device.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.
Claims (4)
1. an Oilfield Water Injection Pipelines inner wall anti-corrosive device, it is characterized in that, at least comprise replaceable corrosion-preventing device (5), the rear and front end of described replaceable corrosion-preventing device (5) is connected to the first connection line (4) and the second connection line (6), the other end of described the first connection line (4) is connected with into water connection line (1), the other end of described second connection line (6) is connected with water outlet connection line (9), described water inlet connection line (1) is provided with into water high-pressure ball valve (2), described water outlet connection line (9) is provided with water outlet high-pressure ball valve (8),
Described replaceable corrosion-preventing device (5) is spliced by pressure container flange (12) sealing by two high-pressure storage pressurized vessels (10), be provided with replaceable sacrificial anode (11) in each high-pressure storage pressurized vessel (10), the side at the top of each high-pressure storage pressurized vessel (10) is provided with pressure release valve (13).
2. a kind of Oilfield Water Injection Pipelines inner wall anti-corrosive device according to claim 1, is characterized in that, described each high-pressure storage pressurized vessel (10) is respectively equipped with a replaceable sacrificial anode (11) up and down.
3. a kind of Oilfield Water Injection Pipelines inner wall anti-corrosive device according to claim 1 and 2, it is characterized in that, described high-pressure storage pressurized vessel (10) is by Horizontal cylinder shape cylindrical shell, and the ring flange of the pressure container flange (12) that Horizontal cylinder shape cylindrical shell one end is fixedly connected with dished end and is fixed on the Horizontal cylinder shape cylindrical shell the other end forms.
4. a kind of Oilfield Water Injection Pipelines inner wall anti-corrosive device according to claim 1, it is characterized in that, described water inlet connection line (1) is connected by the first high pressure flange (3) with the first connection line (4), and described water outlet connection line (9) is connected by the second high pressure flange (7) with the second connection line (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520399931.3U CN204898087U (en) | 2015-06-11 | 2015-06-11 | Anticorrosive device of oil -field flooding pipeline inner wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520399931.3U CN204898087U (en) | 2015-06-11 | 2015-06-11 | Anticorrosive device of oil -field flooding pipeline inner wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204898087U true CN204898087U (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520399931.3U Withdrawn - After Issue CN204898087U (en) | 2015-06-11 | 2015-06-11 | Anticorrosive device of oil -field flooding pipeline inner wall |
Country Status (1)
| Country | Link |
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| CN (1) | CN204898087U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911604A (en) * | 2015-06-11 | 2015-09-16 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Oil-field water injection pipeline inner wall anticorrosion device and replacement method |
-
2015
- 2015-06-11 CN CN201520399931.3U patent/CN204898087U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911604A (en) * | 2015-06-11 | 2015-09-16 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Oil-field water injection pipeline inner wall anticorrosion device and replacement method |
| CN104911604B (en) * | 2015-06-11 | 2017-07-25 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of Oilfield Water Injection Pipelines inner wall anti-corrosive device and replacing options |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151223 Effective date of abandoning: 20170725 |
|
| AV01 | Patent right actively abandoned |