CN111855933A - Solid corrosion inhibitor release rate evaluation device and method - Google Patents
Solid corrosion inhibitor release rate evaluation device and method Download PDFInfo
- Publication number
- CN111855933A CN111855933A CN201910347918.6A CN201910347918A CN111855933A CN 111855933 A CN111855933 A CN 111855933A CN 201910347918 A CN201910347918 A CN 201910347918A CN 111855933 A CN111855933 A CN 111855933A
- Authority
- CN
- China
- Prior art keywords
- corrosion inhibitor
- solid corrosion
- containing vessel
- oil bath
- solid
- 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
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/15—Medicinal preparations ; Physical properties thereof, e.g. dissolubility
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Biophysics (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The application relates to a solid corrosion inhibitor release rate evaluation device and a method, comprising a sealed container with a sealed cover, wherein the sealed container is placed in an oil bath pan, a magnetic stirrer is arranged at the bottom of the oil bath pan, and a stirring magneton of the magnetic stirrer is placed in the sealed container; a support is fixed at the middle part in the sealed container, a bayonet is arranged at the front end of the support, and a corrosion inhibitor containing vessel is clamped in the bayonet; the corrosion inhibitor containing vessel comprises a body with a cavity and an open upper end, and a sealing cover with a release hole is sealed and covered at the open upper end of the body. The application can meet the requirement that the solid corrosion inhibitor is fully contacted with a corrosion medium, so that the effective components of the solid corrosion inhibitor are dissolved and diffused into the corrosion medium through the open pores, and meanwhile, the residue after the solid corrosion inhibitor is released can be prevented from entering the corrosion medium.
Description
Technical Field
The application relates to the field of determination of release rate of sustained-release drugs, in particular to a device and a method for evaluating the release rate of a solid corrosion inhibitor.
Background
The existing evaluation methods of the solid corrosion inhibitor can be divided into a static evaluation method and a dynamic evaluation method.
The static evaluation method comprises the following steps:
1. the baseball method comprises the following steps: processing the solid corrosion inhibitor into a rod or a ball, statically immersing the solid corrosion inhibitor into water to dissolve the solid corrosion inhibitor, taking out the solid corrosion inhibitor after releasing for a certain time, carrying out suction filtration and drying, and comparing the mass change before and after the release to calculate the release rate;
2. a glass tube method: and (3) placing a solid corrosion inhibitor sample in a glass tube (one end or two ends of the glass tube are exposed), standing and immersing the glass tube in water, taking out, filtering, drying after the solid corrosion inhibitor is released for a certain time, and comparing the mass change before and after the solid corrosion inhibitor is released to calculate the release rate.
The dynamic evaluation method comprises the following steps:
1. a stirring method: processing the solid corrosion inhibitor into a rod shape or a ball shape, directly adding the solid corrosion inhibitor into a beaker, dissolving the solid corrosion inhibitor under a stirring state, taking out the solid corrosion inhibitor after releasing for a certain time, carrying out suction filtration and drying, and comparing the mass change before and after the release to calculate the release rate;
2. a flow method: processing the solid corrosion inhibitor into a rod or a ball, directly adding the solid corrosion inhibitor into a glass tube or directly filling the solid corrosion inhibitor into the glass tube, flushing the glass tube with running water in a flowing mode, dissolving the solid corrosion inhibitor at different flow rates, taking out the solid corrosion inhibitor after releasing for a certain time, carrying out suction filtration and drying, and calculating the release rate by comparing the mass change before and after the release.
However, these methods directly expose the solid corrosion inhibitor to water, and do not consider the release rate of the corrosion inhibitor when the corrosion inhibitor is sleeved outside the carrying container, so that the release rate in actual use has a certain error with the release rate in the experimental process.
Disclosure of Invention
The application aims at measuring the release rate of the solid corrosion inhibitor under a simulated working condition and evaluating the synergistic anticorrosion effect among different solid corrosion inhibitors; based on the above object, another object of the present application is to provide a method for evaluating the release rate of a solid corrosion inhibitor formed by using a device for evaluating the release rate of a solid corrosion inhibitor.
The purpose of the application is realized as follows: the device for evaluating the release rate of the solid corrosion inhibitor comprises a sealed container with a sealed cover, wherein the sealed container is placed in an oil bath pan, a magnetic stirrer is arranged at the bottom of the oil bath pan, and a stirring magneton of the magnetic stirrer is placed in the sealed container; a support is fixed at the middle part in the sealed container, a bayonet is arranged at the front end of the support, and a corrosion inhibitor containing vessel is clamped in the bayonet; the corrosion inhibitor containing vessel comprises a body with a cavity and an open upper end, and a sealing cover with a release hole is sealed and covered at the open upper end of the body.
A circle of groove is formed in the outer wall of the body, and a bayonet is arranged at the front end of the support and connected with the groove in a clamped mode.
The body is divided into a plurality of independent cavities by clapboards.
The oil bath pan is provided with a heating device.
Due to the adoption of the technical scheme, the solid corrosion inhibitor can be in full contact with a corrosion medium, so that the effective components of the solid corrosion inhibitor are dissolved and diffused into the corrosion medium through the open pores, and residues after the solid corrosion inhibitor is released can be prevented from entering the corrosion medium. The device and the method are used for evaluating the release rates of six solid corrosion inhibitors used in oil fields, the repeatability of experimental results is high, and the error is less than 5%. The mass of the solid corrosion inhibitor released in unit time per unit surface area is calculated by comparing the mass change of the solid corrosion inhibitor before and after the experiment, so that the release rate of the solid corrosion inhibitor is obtained, and the release rate of the solid corrosion inhibitor can be quickly and accurately evaluated.
Drawings
The technical scheme of the invention is given by the following drawings and examples:
fig. 1 is a schematic structural diagram of a water injection structure of a carbonate reservoir.
Legend: 1. the corrosion inhibitor storage container comprises a sealed container, 2, a sealed cover, 3, an oil bath pot, 4, a support, 5, a corrosion inhibitor storage dish, 6, a magnetic stirrer, 7, a stirring magneton, 8, a temperature sensor, 9, a release hole, 10, a sealed cover, 11 and a groove.
Detailed Description
The present application is not limited to the following examples, and specific implementations may be determined according to the technical solutions and practical situations of the present application.
Example (b): the device for evaluating the release rate of the solid corrosion inhibitor comprises a sealed container 1 with a sealing cover 2, wherein the sealed container 1 is placed in an oil bath pot 3, a magnetic stirrer 6 is arranged at the bottom of the oil bath pot 3, and a stirring magneton 7 of the magnetic stirrer 6 is placed in the sealed container 1; a support 4 is fixed at the middle part in the sealed container 1, the front end of the support 4 is provided with a bayonet, and a corrosion inhibitor containing vessel 5 is clamped in the bayonet; the corrosion inhibitor containing vessel 5 comprises a body with a cavity and an open upper end, and a sealing cover 10 with a release hole is sealed and covered at the open upper end of the body.
A circle of groove is formed in the outer wall of the body, and a bayonet is arranged at the front end of the support 4 and connected with the groove in a clamped mode.
The body is divided into a plurality of independent cavities by clapboards.
The stirring magneton 7 is positioned below the corrosion inhibitor containing vessel 5.
The oil bath pan 3 is provided with a heating device.
The stirring magnetons 7 on the magnetic stirrer 6 rotate to realize the uniform distribution of the corrosion inhibitor, and different flow speed conditions are simulated.
The oil-gas medium of a certain oil field has the characteristics of high salinity and high chloride ion, and contains H2S and CO2The corrosion environment is very harsh, and the corrosion risk of the underground pipe column is higher and higher along with the continuous increase of comprehensive water content. In order to effectively protect the underground pipe column, an anti-corrosion measure for adding the solid corrosion inhibitor is established, and the release rate of the solid corrosion inhibitor is evaluated.
A method for evaluating the release rate of a solid corrosion inhibitor comprises the following specific steps:
step one, drying the solid corrosion inhibitor A, B, C, D to be tested at a low temperature in vacuum, then weighing and measuring the surface area of the solid corrosion inhibitor A, B, C, D, wherein the drying temperature is 60 ℃, and the drying time is 12 h. Then putting a solid corrosion inhibitor sample to be detected into a corrosion inhibitor containing vessel 5, sealing the corrosion inhibitor containing vessel 5 by using a sealing cover 10 with a release hole 9 at the top end, vertically fixing the corrosion inhibitor containing vessel 5 in the middle of a closed container 1 through a support 4, adding a corrosive medium into the closed container 1 and enabling the corrosive medium to submerge the top of the corrosion inhibitor containing vessel 5, sealing the corrosion inhibitor containing vessel by using a sealing cover 2, and then putting the corrosion inhibitor containing vessel into an oil bath pot 3;
step two, opening a heating device of the oil bath pot 3, and setting the oil bath temperature to 90 ℃;
step three, opening the magnetic stirrer 6, and setting the rotating speed of the stirring magneton 7 to be 150 rpm;
step four, starting the test, closing the magnetic stirrer 6 after 0.5h, closing the heating device of the oil bath pot 3, and ending the test;
and step five, taking out the closed container 1, opening the sealing cover 2, taking out the corrosion inhibitor containing vessel 5, opening the sealing cover 10, finally taking out the released residual solid corrosion inhibitor, drying the released residual solid corrosion inhibitor in vacuum at a low temperature, and weighing the dried residual solid corrosion inhibitor at a drying temperature of 60 ℃ for 12 hours.
TABLE 1 evaluation data of solid corrosion inhibitor release rates in the examples
The above technical features constitute the best embodiments of the present application, which have strong adaptability and best implementation effect.
Claims (6)
1. A solid corrosion inhibitor release rate evaluation device is characterized in that: the oil bath device comprises a sealed container with a sealing cover, wherein the sealed container is placed in an oil bath pan, a magnetic stirrer is arranged at the bottom of the oil bath pan, and a stirring magneton of the magnetic stirrer is placed in the sealed container; a support is fixed at the middle part in the sealed container, a bayonet is arranged at the front end of the support, and a corrosion inhibitor containing vessel is clamped in the bayonet; the corrosion inhibitor containing vessel comprises a body with a cavity and an open upper end, and a sealing cover with a release hole is sealed and covered at the open upper end of the body.
2. The apparatus for evaluating a release rate of a solid corrosion inhibitor according to claim 1, wherein: a circle of groove is formed in the outer wall of the body, and a bayonet is arranged at the front end of the support and connected with the groove in a clamped mode.
3. The apparatus for evaluating a release rate of a solid corrosion inhibitor according to claim 1, wherein: the body is divided into a plurality of independent cavities by clapboards.
4. The apparatus for evaluating a release rate of a solid corrosion inhibitor according to claim 1, wherein: the oil bath pan is provided with a heating device.
5. A method for evaluating the release rate of a solid corrosion inhibitor is characterized by comprising the following steps: the method comprises the following specific steps:
step one, drying the solid corrosion inhibitor A, B, C, D to be tested at a low temperature in vacuum, then weighing and measuring the surface area of the solid corrosion inhibitor A, B, C, D, wherein the drying temperature is 60 ℃, and the drying time is 12 h.
6. Then putting a solid corrosion inhibitor sample to be detected into a corrosion inhibitor containing vessel, sealing the corrosion inhibitor containing vessel by using a sealing cover with a release hole at the top end, vertically fixing the corrosion inhibitor containing vessel in the middle of a closed container through a support, adding a corrosive medium into the closed container and submerging the top of the corrosion inhibitor containing vessel, sealing the corrosion inhibitor containing vessel by using the sealing cover, and putting the corrosion inhibitor containing vessel into an oil bath pan;
step two, opening a heating device of the oil bath pan, and setting the oil bath temperature to be 90 ℃;
step three, opening the magnetic stirrer, and setting the rotating speed of the stirring magnetons to be 150 rpm;
step four, starting the test, closing the magnetic stirrer after 0.5h, and closing the heating device of the oil bath pan;
and step five, taking out the closed container and opening the sealing cover, then taking out the corrosion inhibitor containing vessel and opening the sealing cover, finally taking out the released residual solid corrosion inhibitor, drying the released residual solid corrosion inhibitor in vacuum at a low temperature, and weighing the dried residual solid corrosion inhibitor at a drying temperature of 60 ℃ for 12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910347918.6A CN111855933A (en) | 2019-04-28 | 2019-04-28 | Solid corrosion inhibitor release rate evaluation device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910347918.6A CN111855933A (en) | 2019-04-28 | 2019-04-28 | Solid corrosion inhibitor release rate evaluation device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111855933A true CN111855933A (en) | 2020-10-30 |
Family
ID=72964943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910347918.6A Pending CN111855933A (en) | 2019-04-28 | 2019-04-28 | Solid corrosion inhibitor release rate evaluation device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111855933A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802272A (en) * | 1973-01-24 | 1974-04-09 | Dow Chemical Co | Automatic dissolution rate determinator |
| CN103399129A (en) * | 2013-07-24 | 2013-11-20 | 西安交通大学 | Method for measuring in-vitro release degree and adhering time/corrosion time of bioadhesive preparation |
| CN203414458U (en) * | 2013-07-24 | 2014-01-29 | 西安交通大学 | Device for measuring in-vitro release degree and adhesion time/corrosion time of bioadhesive preparation |
| CN207040638U (en) * | 2017-08-05 | 2018-02-27 | 榆林学院 | Prevent and treat the fog machine of Corn diseases and insect pests |
| CN109030398A (en) * | 2018-08-28 | 2018-12-18 | 中国烟草总公司郑州烟草研究院 | A kind of buccal cigarette nicotine release behavior detection method and its special test equipment |
-
2019
- 2019-04-28 CN CN201910347918.6A patent/CN111855933A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802272A (en) * | 1973-01-24 | 1974-04-09 | Dow Chemical Co | Automatic dissolution rate determinator |
| CN103399129A (en) * | 2013-07-24 | 2013-11-20 | 西安交通大学 | Method for measuring in-vitro release degree and adhering time/corrosion time of bioadhesive preparation |
| CN203414458U (en) * | 2013-07-24 | 2014-01-29 | 西安交通大学 | Device for measuring in-vitro release degree and adhesion time/corrosion time of bioadhesive preparation |
| CN207040638U (en) * | 2017-08-05 | 2018-02-27 | 榆林学院 | Prevent and treat the fog machine of Corn diseases and insect pests |
| CN109030398A (en) * | 2018-08-28 | 2018-12-18 | 中国烟草总公司郑州烟草研究院 | A kind of buccal cigarette nicotine release behavior detection method and its special test equipment |
Non-Patent Citations (3)
| Title |
|---|
| 管素红: "油井管杆防腐技术研究", 《内江科技》 * |
| 赵修太等: "长效固体缓蚀剂的研制及应用", 《石油化工腐蚀与防护》 * |
| 黄红兵等: "水溶性棒状缓蚀剂CT2－14的水溶性棒状缓蚀剂CT2－14的研究及应用", 《石油与天然气化工》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107202763B (en) | Temperature salt correction algorithm of optical dissolved oxygen sensor and novel calibration device | |
| CN202351159U (en) | Testing pool device for field monitoring of corrosion resistance of ship body coating | |
| CN108344653B (en) | Device and method for testing scouring resistance of soil body | |
| CN101281984A (en) | Method and apparatus for detecting inner pressure of lithium ion battery | |
| CN106501151B (en) | A kind of shale aperture measurement device and method based on imbibition and ion diffusion property | |
| CN204086069U (en) | Lubricating oil antifoaming charactistic analyzer | |
| CN102621058A (en) | Simulated accelerated corrosion testing method of ship fastener and protective coating | |
| CN211347813U (en) | Device for measuring rock water absorption in real time | |
| CN111855933A (en) | Solid corrosion inhibitor release rate evaluation device and method | |
| CN110296932A (en) | A kind of electro-chemical test sample and preparation method thereof | |
| CN109724911B (en) | Corrosion inhibitor evaluation integrated device and use method thereof | |
| CN203824606U (en) | Improved battery cover volume measuring apparatus | |
| CN114184757A (en) | Method for measuring denitrification rate of water suspended matters | |
| CN113484229A (en) | Metal corrosion state evaluation device and method under simulated marine multi-parameter condition | |
| CN110208128B (en) | Rock dynamic and static water environment and drying simulation comprehensive test system | |
| CN201537496U (en) | Sample dissolution cup used for dissolving surface plating of baseplate | |
| CN109030308B (en) | Method for quickly and simply measuring solid porosity | |
| CN111220507A (en) | Method for rapidly measuring wettability of protein powder | |
| CN218393732U (en) | Water bath corrosion test solvent hanging bottle | |
| CN216594900U (en) | Electrochemical probe capable of being used for testing coating impedance on site | |
| CN216484545U (en) | System for detecting corrosion rate of metal in normal-temperature aqueous solution | |
| CN215768476U (en) | Simple device for evaluating wax dissolving rate of paraffin remover | |
| CN110749632A (en) | Equipment and method for evaluating performance of corrosion inhibitor in solution containing sediment | |
| CN110687001A (en) | Method and device for measuring dissolution rate of solid wax inhibitor | |
| CN111781092B (en) | Sample mixing method for determining gas production rate of substance and water reaction |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201030 |
|
| WD01 | Invention patent application deemed withdrawn after publication |