CN111141667A - Air foam flooding high-pressure corrosion simulation test device and test method thereof - Google Patents
Air foam flooding high-pressure corrosion simulation test device and test method thereof Download PDFInfo
- Publication number
- CN111141667A CN111141667A CN202010113190.3A CN202010113190A CN111141667A CN 111141667 A CN111141667 A CN 111141667A CN 202010113190 A CN202010113190 A CN 202010113190A CN 111141667 A CN111141667 A CN 111141667A
- Authority
- CN
- China
- Prior art keywords
- air
- corrosion
- foam
- autoclave body
- pressure
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
Abstract
The invention discloses an air foam flooding high-pressure corrosion simulation test device and a test method thereof, and the test device comprises an autoclave device, wherein the autoclave device comprises an autoclave body and an inner tank filled with foam liquid, the outer wall of the inner tank is provided with a thermocouple, and a pressure gauge, a thermometer and a corrosion hanging piece device which extend into the inner tank are arranged on a kettle cover; further comprising CO extending into the inner vessel2A delivery pipe, an air delivery pipe, a foam liquid delivery pipe and an exhaust pipe; controlled delivery of air, foam concentrate and CO by means of a valve2The gas enters the autoclave body to simulate the test conditions designed for air foam flooding and is used for simulating O2/CO2Coexisting corrosion tests. Used for simulating corrosion mechanism of oil displacement technology by adopting air foam in oil field and evaluating anti-O (oxygen) under simulated air foam flooding condition2Or O2/CO2The performance of a corroded layer and a corrosion inhibitor coexist, so that the corrosion control of the metal pipe in the air foam flooding process is guided.
Description
Technical Field
The invention relates to a corrosion rate test of a metal pipe under an air foam flooding working condition environment of an oil field and a corrosion inhibition efficiency test of a corrosion inhibitor under corresponding conditions, in particular to an air foam flooding high-pressure corrosion simulation test device and a test method thereof.
Background
The air foam flooding technology is characterized in that a certain amount of air is injected into an oil layer through an injection well by an air compressor, foam liquid is injected from an oil pipe by a foam injection pump in a segmented mode, and foam is generated underground. Air contains a certain amount of O2Injected into the formation through a gas injection well due to O2The partial pressure of oxygen is high, and in the environment of moist high pressure and high temperature pressure, the oxygen depolarization reaction is accelerated, and serious O is caused to the wall of the injection well pipe2Corroding; at the same time, O is generated after the air is injected into the oil reservoir2Oxidation reaction with crude oil and most of the oxidation reaction is consumed to generate a large amount of CO2，CO2By reaction with water to form carbonic acid due to the co-presence of small amounts of O2And the co-existing corrosion environment is formed, which aggravates the serious O of the metal pipe2/CO2The corrosion causes the service life of the oil production well pipe to be reduced, thereby greatly reducing the comprehensive economic benefit and directly influencing the normal production of the oil field. In addition, due to conventional CO2Corrosion or O2In the high-temperature and high-pressure corrosion test of corrosion, the influence of the foam liquid is not generally considered, but actually, the addition of the foam liquid enables the aqueous solution to act on the surface of the sample to have the characteristic of thin liquid viscosity, and the foam liquid can form a large amount of micro turbulence on the near-surface area of the sample under the dynamic rotating and stirring action of the sample frame, so that the hydrodynamic action on the surface of the sample is influenced.
Therefore, a test O was developed in a simulated air foam flooding environment2Corrosion or O2/CO2The coexisting corrosion testing device is used for obtaining the corrosion rate of metal materials in gas phase and foam liquid phase, mastering the corrosion rule and characteristics and has important reference value for developing corrosion prevention of oil displacement by air foam in an oil field.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide an air foam flooding high-pressure corrosion simulation test device and a test method thereof, which are used for evaluating corrosion of a metal pipe under the condition of improving the recovery ratio process by adopting an air foam flooding technology in a simulated oil fieldThe corrosion mechanism, characteristics and behaviors can be simultaneously used for evaluating the O resistance under the simulated air foam flooding condition2Corrosion, or O2/CO2The performance of the coating and the corrosion inhibitor coexist, so that the corrosion control of the metal pipe in the air foam flooding process is guided.
The invention is realized by the following technical scheme.
An air foam flooding high-pressure corrosion simulation test device comprises an autoclave device, wherein the autoclave device comprises an autoclave body, an inner tank filled with foam liquid is arranged in the autoclave body, a thermocouple is arranged on the outer wall of the inner tank, a kettle cover is covered on the top of the autoclave body, and a pressure gauge, a thermometer and a corrosion hanging piece device which extend into the inner tank are arranged on the kettle cover;
also comprises CO arranged on the kettle cover and extending into the inner tank2A delivery pipe, an air delivery pipe, a foam liquid delivery pipe and an exhaust pipe; controlled delivery of air, foam concentrate and CO by means of a valve2The gas enters the autoclave body to simulate the test conditions designed for air foam flooding and is used for simulating O2/CO2Coexisting corrosion tests.
With respect to the above technical solutions, the present invention has a further preferable solution:
in the device, the corrosion coupon device comprises a transmission system arranged on the kettle cover, and on an output shaft of the transmission system, the sample frame is fixed by insulating screws.
In the present apparatus, the CO2The conveying pipe is communicated with CO through valve control2A gas cylinder.
In the device, the air delivery pipe is communicated with the air compression delivery system, and the air compression delivery system comprises a gas flow meter, an air compressor and an exhaust valve which are sequentially communicated through the air delivery pipe.
In the device, the foam liquid conveying pipe is communicated with a foam liquid preparation system, and the foam liquid preparation system comprises a feed pump, a storage tank, a lift pump and a reaction container which are sequentially communicated through the foam liquid conveying pipe.
In the device, a liquid flowmeter is arranged on the foam liquid conveying pipe; and a stirring device is arranged in the reaction container.
In the device, the transmission system is communicated with a water pump in the cold water tank through a plastic hose.
In the device, the high-pressure kettle body is lined with a heat-insulating material.
In the device, the high-pressure kettle body and the kettle cover are made of nickel-based alloy materials. Foam concentrate delivery pipe, exhaust pipe, air delivery pipe and CO2The conveying pipes are made of 13Cr stainless steel; CO 22The conveying pipe and the exhaust pipe are both made of 316L stainless steel.
Correspondingly, the invention provides an air foam flooding high-pressure corrosion simulation test method, which comprises the following steps of:
1) adding clear water or oil field on-site formation water and a foam medicine into a reaction container according to a proportion, and stirring; pumping into a foam liquid storage tank, and then flowing into the autoclave body through a liquid dosimeter by a liquid feeding pump;
2) fixedly mounting corrosion hanging pieces which are polished by abrasive paper, deoiled, dehydrated by absolute ethyl alcohol and dried by cold air on a sample rack, hanging a gas phase and a liquid phase in a group respectively, and covering a kettle cover;
3)O2corrosion situation: the air pressure of the autoclave body which is used for leading air to enter through the air compressor is controlled to determine the O in the air2Partial pressure, namely heating the autoclave body to a designed temperature, adjusting the rotating speed of a transmission system, and realizing adjustment of cold water circulation of the transmission system through a cold water system; testing corrosion coupon O2Corrosion conditions;
4)O2/CO2case where corrosion coexists: according to O2With CO2According to different proportions, firstly introducing gas with smaller occupation ratio into the autoclave body to the designed O2Partial pressure and CO2Partial pressure, namely heating the autoclave body to a designed temperature, adjusting the rotating speed of a transmission system, and realizing adjustment of cold water circulation of the transmission system through a cold water system; testing corrosion coupon O2/CO2The coexistence of corrosion;
5) and after the test to be tested is finished, releasing the gas in the autoclave body into a tail gas treatment system, taking out the corrosion coupon, and carrying out sample treatment and data analysis.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1) the invention adopts the air compressor to generate different pressures according to the design2Air with different pressures is introduced, and foam liquid which is practical in an oil well site is injected into a medium of the autoclave body, so that the working condition environment of a simulated injection well which realizes the corrosion characteristic of thin liquid formed on the surface of a sample in the autoclave body can be realized, and meanwhile, the dynamic rotation stirring of a sample frame of the autoclave body is adopted, the practical situation that the foam liquid can form a large amount of micro-turbulence on the surface area near the sample can be also achieved, and the corrosion research of the injection well system in the air foam flooding process can be more accurately and effectively simulated.
2) The invention adopts CO of the high-pressure gas cylinder2In combination with O introduced by the air compressor2Can realize the actual CO-existence of CO in the oil production well in the air foam flooding process2And O2The environment of corrosion working conditions is simulated, and the CO of the simulated oil well can be controlled by the pressure gauge of the high-pressure autoclave system2And O2The gas pressure ratio and the thermometer control simulate the temperatures of different oil wells, so that the corrosion research of the oil production well system in the air foam flooding process can be simulated more accurately and effectively.
According to the invention, the foam liquid preparation system is communicated in the high-pressure kettle, so that the foam liquid is pumped into the high-pressure kettle to be used as a liquid-phase corrosion medium, and the simulation test of foam flooding high-pressure corrosion of the corrosion coupon device is realized.
The invention communicates an air compression conveying system and CO in the high-pressure autoclave body2Delivery system for CO2And air for study O2/CO2Corrosion conditions for the corrosion coupon device coexist.
Air, foam concentrate and CO delivery through valve control and flow meter2The gas quantity enters the autoclave body to simulate the test conditions designed for air foam flooding so as to obtain the corrosion rate of the metal material in gas phase and foam liquid phase, grasp the corrosion rule and characteristics and be used for researching O2/CO2Corrosion conditions coexist. The invention is suitable for O of underground pipe column and ground conveying pipeline under the working condition environment of oilfield air foam flooding2Corrosion, O2/CO2Basic research of coexisting corrosion and corrosion inhibitor evaluation under corresponding conditions,
drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention:
FIG. 1 is a schematic structural diagram of an air foam flooding high-pressure corrosion simulation test device;
FIG. 2 is a test O for simulating air foam flooding injection well corrosion test2Corrosion conditions;
FIG. 3 is a test O for simulating corrosion of an air foam flooding oil well2/CO2Corrosion coexists.
In the figure: 1-autoclave body, 2-thermal insulation material, 3-kettle cover, 4-thermocouple, 5-pressure gauge, 6-thermometer, 7-foam liquid conveying pipe, 8-exhaust pipe, 9-air conveying pipe and 10-CO2Conveying pipe, 11-valve, 12-transmission system, 13-sample rack, 14-insulating screw, 15-corrosion hanging piece, 16-foam liquid, 17-cold water tank, 18-water pump, 19-plastic hose, 20-stirring device, 21-reaction container, 22-lift pump, 23-storage tank, 24-liquid feeding pump, 25-liquid flowmeter, 26-air compressor, 27-gas flowmeter, 28-emptying valve, 29-CO2A gas cylinder.
Detailed Description
The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions of the present invention are provided to explain the present invention without limiting the invention thereto.
As shown in fig. 1, the air foam flooding high-pressure corrosion simulation test device comprises an autoclave device, wherein the autoclave device comprises an autoclave body 1, a heat insulation material 2, a cover 3, a thermocouple 4, a pressure gauge 5, a thermometer 6 and a corrosion hanging piece device, the heat insulation material 2 is lined in the autoclave body 1, an inner tank is arranged in the autoclave body 1, and foam liquid 16 is filled in the inner tank; the inner tank outer wall is equipped with thermocouple 4, and 1 tops of the autoclave body are covered with kettle cover 3, are equipped with pressure gauge 5 and thermometer 6 that stretch into the inner tank on the kettle cover 3.
Still including locating on the kettle cover 3 and stretching into the corruption lacing film device of inner tank, the corruption lacing film device is including locating transmission system 12 on the kettle cover 3, on the 12 output shafts of transmission system, and sample frame 13 passes through the fixed corruption lacing film 15 of insulating screw 14. The transmission system 12 is communicated with a water pump 18 in the cold water tank 17 through a plastic hose 19. The cooling system consists of a cold water tank, a water pump and a plastic hose and is used for cooling the overheating process of the transmission system of the high-pressure kettle body.
And also comprises CO arranged on the kettle cover 3 and extending into the inner tank2A delivery pipe 10, an air delivery pipe 9, a foam concentrate delivery pipe 7 and an exhaust pipe 8; wherein, CO2CO delivery line 10 controlled by valve 112The delivery pipe 10 is communicated with CO2Cylinder 29, cylinder is study O2/CO2CO for coexistence of corrosion conditions2Gas cylinder 29, opening valve to supply CO2Flows through the gas flowmeter and enters the autoclave body. Air delivery pipe 9 intercommunication air compression conveying system is equipped with gas flowmeter 27, air compressor 26 and exhaust-valve 28 on air delivery pipe 9, and air compression conveying system passes through small-size air compressor with the air current through gas flowmeter, valve entering autoclave body, reaches design air pressure after, discharges the high-pressure air in the air compressor through the exhaust-valve in order to stop the occurence of failure.
The foam liquid conveying pipe 7 is communicated with a foam liquid preparation system, the foam liquid preparation system comprises a liquid flow meter 25 on the foam liquid conveying pipe 7, a liquid feeding pump 24, a storage tank 23, a lifting pump 22 and a reaction container 21 are sequentially communicated through the foam liquid conveying pipe 7, and a stirring device 20 is arranged in the reaction container 21. The reaction vessel 21 is used for preparing foam liquid, and the required foam medicine is added into an anti-corrosion reaction vessel with a stirrer by using clean water with qualified water quality after purification; a foam liquid preparation system is composed of a reaction container, a stirring device, a conveying pipe, a storage tank, a valve, a lifting pump, a liquid feeding pump and a liquid flow meter, and foam liquid is pumped into the autoclave body to serve as a liquid phase corrosion medium.
Wherein, the autoclave body and the autoclave cover are made of nickel-based alloy materials. Foam concentrate delivery pipe 7, exhaust pipe 8, air delivery pipe 9 and CO2The conveying pipe 10 is made of anticorrosive 13Cr stainless steel. CO 22The conveying pipe and the kettle body exhaust pipe are made of 316L stainless steelWhich are supplied with air, foam concentrate and CO, respectively, by valve control and flow meters2The gas quantity enters the autoclave body to simulate the test conditions designed for air foam flooding, and is used for researching O2/CO2Corrosion conditions coexist.
Wherein the thermometer is a hot-sleeve bimetallic thermometer and is used for measuring the temperature in the autoclave body. The pressure gauge is used for measuring the internal pressure of the autoclave. The thermocouple is inserted into the kettle body and is close to the inner surface for heating the temperature in the kettle body to the designed test temperature. The transmission device is used for simulating a dynamic corrosion test and can meet different rotating speed requirements through the setting of an automatic control system.
And the kettle body exhaust pipe is used for introducing waste gas in the kettle body into a tail gas treatment system after the test is finished. The metal conveying pipe is used for connecting the foam liquid preparation system, the air compression conveying system and the CO2Internal system pipe fittings such as a gas cylinder supply system and the like and a connecting autoclave body.
Wherein, the sample frame and the screw are made of polytetrafluoroethylene materials, so that the metal transmission suspension rod and the corrosion hanging sheet are directly insulated and separated to prevent galvanic corrosion.
Wherein, the corrosion coupon adopts metal materials for simulating production sites, and a set of coupons is designed in both gas phase and liquid phase so as to research and reflect the corrosion characteristics and behaviors of the coupons in different phase environments.
The flow meter comprises a gas flow meter and a liquid flow meter, wherein the gas flow meter is a corrosion-resistant orifice plate type flow meter and is used for metering the air quantity and CO flowing through a metal pipeline connected with a testing device2Amount of the compound (A). The liquid flowmeter is a corrosion-resistant rotor flowmeter and is used for measuring the amount of foam liquid flowing through a metal pipeline connected with the testing device.
The air foam flooding high-pressure corrosion simulation test implementation process comprises the following steps:
a reaction container 21, a stirring device 20, a foam liquid conveying pipe 7, a lifting pump 22, a storage tank 23, a liquid feeding pump 24 and a liquid flowmeter 7 of a foam liquid preparation system are connected at present, designed clean water and foam medicines are added into the reaction container 21 in proportion, and after stirring for a set time, the clean water and the foam medicines are pumped into the foam liquid storage tank 23 by the lifting pump 22 for standby application, and then the foam liquid is fed into the autoclave body 1 by the liquid feeding pump 24 through a liquid dosimeter. Then, corrosion hanging pieces 15 which are polished by 1000-mesh sand paper, degreased, dehydrated by absolute ethyl alcohol and dried by cold air are fixedly arranged on a sample rack 13 through insulating screws 14, gas phase and liquid phase are hung in a group respectively, three samples in each group are covered and screwed down on a kettle cover 3.
For study O2Corrosion situation: then, air flows through the high-pressure kettle body 1 entering through the gas flow meter 27 through the air compressor 26, the pressure gauge 5 of the high-pressure kettle device controls the air pressure of the experimental design, and the residual pressure in the compressor is discharged outside by opening the emptying valve 28; to determine O in the air2Partial pressure, namely heating the autoclave body to a designed temperature, adjusting the rotating speed of a transmission system, and realizing adjustment of cold water circulation of the transmission system through a cold water system; testing of corrosion coupon 15 for O2Corrosion conditions.
For study O2/CO2Case where corrosion coexists: then it is necessary to pass CO2Gas cylinder 29 for supplying CO2Gas, O according to experimental design2With CO2The difference in the ratio tends to pass through the smaller gas first. Then checking the closing condition of each valve, after ensuring that the air tightness in the autoclave body is kept, heating to a designed temperature through an intelligent circuit panel of the autoclave body, opening and adjusting the rotating speed of the transmission system 12, then opening a cold water system control switch on the panel, starting a water pump 18 in a cold water tank 17, and realizing cold water circulation through a plastic hose 19.
After the test is finished, the vent valve is opened to release the gas in the autoclave body 1 into the tail gas treatment system, the autoclave cover 3 is opened, the corrosion hanging piece 15 is taken out, and the sample is treated and the data is analyzed.
The following is by way of two examples, namely O2Corrosion conditions and O2/CO2Corrosion conditions coexist to further illustrate the effectiveness of the test methods of the present invention.
In one example, using the working environment of an oilfield air foam injection well as an example, a sample of N80 steel was prepared by taking formation water and foam concentrate, i.e., foam (0.5% AES) + foam stabilizer (0.2% HPAM), from a well site at a ratio of 3: 1 proportion is added into a reaction vessel 21Stirring at the speed of 1000r/min for 2min, pumping into a foam liquid storage tank 23 by a lift pump 22 for later use, and then flowing into the autoclave body 1 by a liquid feeding pump 24 through a liquid dosimeter. The air pressures for the experimental design were controlled by the pressure gauge 5 of the autoclave apparatus to be 8 and 12MPa (in terms of O in air), respectively2When the content is 20%, O2Partial pressure of 1.6MPa and 2.4MPa), and the design temperature is controlled to be 35 ℃ by a thermometer 6, the rotating speed of the transmission system 12 is adjusted to be 0.3m/s, and the period is 5 days. Test O for air foam flooding injection well Corrosion test2The corrosion is shown in FIG. 2.
The results show that the air pressure of the injection well increases (i.e., O) as the air foam flooding process progresses2Pressure increase), the corrosion rate of the N80 tubing steel coupon increases, which is mainly exacerbated by oxygen cathode depolarization reaction processes.
In another embodiment, taking the working condition environment of an air foam flooding oil production well of an oil field as an example, a N80 steel sample is injected into an autoclave body 1 according to the foam liquid proportion, the total pressure in the autoclave body is designed to be 8MPa, and CO of gas in the autoclave body is designed2The ratio of the air partial pressure to the air partial pressure is 20%: 80% and 50%: 50% by weight of O in air2The content is calculated as 20 percent, and CO is actually tested2And O2The proportions are respectively 20%: 16% (5:4) and 50%: 10% (5:1), then CO2And O21.6MPa respectively: 1.28MPa and 4 MPa: 0.8MPa, by controlling the air compressor 26, the pressure gauge 6 and the CO2A gas cylinder 29; the design temperature was then controlled by thermometer 6 to 35 ℃ and the speed of transmission 12 was adjusted to 0.3m/s for a period of 5 days. Test O for air foam flooding oil well corrosion test2/CO2The coexistence of corrosion is shown in FIG. 3.
The results show that CO is continuously consumed by oxidation of oxygen in the oil production well system in the air foam flooding process2With a corresponding increase in content, i.e. CO2/O2The partial pressure ratio is increased, and under the condition of only comparing two experimental data, the corrosion rate of the N80 tubing steel sample is increased, which is consistent with different CO2And O2The synergistic effect of partial pressures is relevant.
As can be seen from the above examples, the present inventionThe invention relates to O of a downhole pipe column and a ground conveying pipeline under the working condition environment of oilfield air foam flooding2Corrosion, O2/CO2Basic research of coexisting corrosion and corrosion inhibitor evaluation under corresponding conditions plays an important role.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (9)
1. The air foam flooding high-pressure corrosion simulation testing device is characterized by comprising an autoclave device, wherein the autoclave device comprises an autoclave body (1), an inner tank filled with foam liquid (16) is arranged in the autoclave body (1), a thermocouple (4) is arranged on the outer wall of the inner tank, and a pressure gauge (5), a thermometer (6) and a corrosion hanging piece device which extend into the inner tank are arranged on a kettle cover (3) which is covered on the top of the autoclave body (1);
also comprises CO which is arranged on the kettle cover (3) and extends into the inner tank2A delivery pipe (10), an air delivery pipe (9), a foam concentrate delivery pipe (7) and an exhaust pipe (8); controlled delivery of air, foam concentrate and CO by means of a valve2The gas enters the autoclave body (1) to simulate the test conditions designed for air foam flooding and is used for simulating O2/CO2Coexisting corrosion tests.
2. The air foam-driven high-pressure corrosion simulation testing device according to claim 1, wherein the corrosion hanging piece device comprises a transmission system (12) arranged on the kettle cover (3), the transmission system (12) is arranged on an output shaft, and the sample rack (13) is fixed by a corrosion hanging piece (15) through an insulating screw (14).
3. The air foam flooding high-pressure corrosion simulation test device according to claim 1, wherein the CO is2The conveying pipe (10) is controlled to be communicated with CO through a valve (11)2A gas cylinder (29).
4. The air foam-driven high-pressure corrosion simulation testing device is characterized in that the air delivery pipe (9) is communicated with an air compression delivery system, and the air compression delivery system comprises a gas flow meter (27), an air compressor (26) and an exhaust valve (28) which are sequentially communicated through the air delivery pipe (9).
5. The air foam flooding high-pressure corrosion simulation testing device according to claim 1, wherein the foam liquid conveying pipe (7) is communicated with a foam liquid preparation system, and the foam liquid preparation system comprises a liquid feeding pump (24), a storage tank (23), a lifting pump (22) and a reaction container (21) which are sequentially communicated through the foam liquid conveying pipe (7);
a liquid flowmeter (25) is arranged on the foam liquid conveying pipe (7); a stirring device (20) is arranged in the reaction vessel (21).
6. The air foam flooding high-pressure corrosion simulation test device according to claim 1, wherein the transmission system (12) is communicated with a water pump (18) in a cold water tank (17) through a plastic hose (19).
7. The air foam flooding high-pressure corrosion simulation test device according to claim 1, wherein the autoclave body (1) is lined with a thermal insulation material (2).
8. The air foam flooding high-pressure corrosion simulation testing device according to claim 1, wherein the autoclave body (1) and the autoclave cover (3) are made of nickel-based alloy; a foam liquid conveying pipe (7), an exhaust pipe (8), an air conveying pipe (9) and CO2The conveying pipes (10) are made of 13Cr stainless steel; CO 22The conveying pipe (10) and the exhaust pipe (8) are both made of 316L stainless steel.
9. An air foam flooding high pressure corrosion simulation of the apparatus of any one of claims 1 to 8 comprising the steps of:
1) adding clear water or oil field on-site formation water and foam medicine into a reaction container (21) according to a proportion, and stirring; the foam liquid is pumped into a foam liquid storage tank (23) and then flows into the autoclave body (1) through a liquid doser by a liquid feeding pump (24);
2) fixedly mounting corrosion hanging pieces (15) which are polished by abrasive paper, deoiled, dehydrated by absolute ethyl alcohol and dried by cold air on a sample rack (13), hanging a gas phase and a liquid phase in a group respectively, and covering a kettle cover (3);
3)O2corrosion situation: the pressure of the test air is controlled by the autoclave body (1) into which the air is introduced by the air compressor (26) to determine the O in the air2Partial pressure, namely heating the autoclave body to a designed temperature, adjusting the rotating speed of a transmission system, and realizing adjustment of cold water circulation of the transmission system through a cold water system; testing of corrosion coupon (15) for O2Corrosion conditions;
4)O2/CO2case where corrosion coexists: according to O2With CO2According to different proportions, gas with a smaller occupation ratio is introduced into the autoclave body (1), the autoclave body (1) is heated to a designed temperature, the rotating speed of the transmission system (12) is adjusted, and cold water circulation of the transmission system (12) is adjusted through a cold water system; testing of corrosion coupon (15) for O2/CO2The coexistence of corrosion;
5) and after the test to be tested is finished, releasing the gas in the autoclave body (1) into a tail gas treatment system, taking out the corrosion hanging piece (15), and carrying out sample treatment and data analysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010113190.3A CN111141667A (en) | 2020-02-24 | 2020-02-24 | Air foam flooding high-pressure corrosion simulation test device and test method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010113190.3A CN111141667A (en) | 2020-02-24 | 2020-02-24 | Air foam flooding high-pressure corrosion simulation test device and test method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111141667A true CN111141667A (en) | 2020-05-12 |
Family
ID=70527859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010113190.3A Pending CN111141667A (en) | 2020-02-24 | 2020-02-24 | Air foam flooding high-pressure corrosion simulation test device and test method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111141667A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504893A (en) * | 2020-05-19 | 2020-08-07 | 北京科技大学 | Device for simulating low-water-content supercritical or dense-phase carbon dioxide corrosion and using method and application thereof |
| CN114235671A (en) * | 2021-12-16 | 2022-03-25 | 中国科学院武汉岩土力学研究所 | Metal supported CO2Indoor test device for corrosion degree evaluation |
-
2020
- 2020-02-24 CN CN202010113190.3A patent/CN111141667A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504893A (en) * | 2020-05-19 | 2020-08-07 | 北京科技大学 | Device for simulating low-water-content supercritical or dense-phase carbon dioxide corrosion and using method and application thereof |
| CN111504893B (en) * | 2020-05-19 | 2021-11-26 | 北京科技大学 | Device for simulating low-water-content supercritical or dense-phase carbon dioxide corrosion and using method and application thereof |
| CN114235671A (en) * | 2021-12-16 | 2022-03-25 | 中国科学院武汉岩土力学研究所 | Metal supported CO2Indoor test device for corrosion degree evaluation |
| CN114235671B (en) * | 2021-12-16 | 2023-09-15 | 中国科学院武汉岩土力学研究所 | Metal is received CO 2 Corrosion degree evaluation indoor test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111141667A (en) | Air foam flooding high-pressure corrosion simulation test device and test method thereof | |
| CN105670591B (en) | A kind of antifreeze foaming water discharge agent and preparation method and application | |
| CN106841026B (en) | A method of evaluation corrosion inhibiter inhibition efficiency | |
| CN110702595B (en) | Multifunctional automatic simulation test device for top corrosion of wet gas pipeline | |
| CN106680196B (en) | A kind of system for evaluating corrosion inhibiter inhibition efficiency | |
| CN112083141B (en) | Cement paste/drilling fluid hydration heat-affected natural gas hydrate stability testing device | |
| CN104897521B (en) | A kind of anhydrous fracturing fluid flow conductivity test system of carbon dioxide | |
| CN106568912A (en) | Method and apparatus for testing solubility of acidic gas in high temperature high pressure stratum water | |
| CN107144522A (en) | Corrosion simulated system under a kind of marine environment and oil gas medium synergy | |
| CN104880502B (en) | Simple stimulation apparatus for corrosion and electrochemistry tests in low speed pipeline | |
| CN211718078U (en) | Air foam drives high pressure corrosion simulation testing arrangement | |
| CN205656106U (en) | Testing arrangement is corroded at moisture loop top | |
| CN204116196U (en) | Multiphase medium high temperature pressure corrosion rate test device | |
| CN110631987A (en) | Multifunctional automatic simulation test device for corrosion under sediment | |
| LU102460B1 (en) | Multifunctional Automatic Simulation Test Device for Top Corrosion of Wet Gas Pipeline | |
| CN104007055B (en) | Pipeline joint anticorrosion layer heat resisting water soaking acceleration test apparatus | |
| CN111562188B (en) | High-pressure high-flow-rate circulation two-phase flow erosion rate experimental device and experimental method | |
| CN203241329U (en) | Device for testing chemical media corrosion resisting property of tubular product | |
| CN116818997A (en) | Device and method for testing performance of scale inhibitor | |
| CN113702224A (en) | Natural gas pipeline inner wall erosion corrosion experimental device and method | |
| CN210775164U (en) | Multifunctional automatic simulation test device for corrosion under sediment | |
| CN113376053B (en) | Material surface scaling behavior simulation online monitoring test system and test method | |
| CN200996928Y (en) | High-temperature dynamic corrosion inspecter | |
| CN108843377B (en) | A kind of coal seam high pressure hydrothermal solution resistanceization method | |
| CN111077224B (en) | Acoustic emission signal generator for corrosion of in-service pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |