CN104990852A - Drilling-condition-simulated permeability experiment method for rubber O-shaped sealing ring - Google Patents
Drilling-condition-simulated permeability experiment method for rubber O-shaped sealing ring Download PDFInfo
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- CN104990852A CN104990852A CN201510372078.0A CN201510372078A CN104990852A CN 104990852 A CN104990852 A CN 104990852A CN 201510372078 A CN201510372078 A CN 201510372078A CN 104990852 A CN104990852 A CN 104990852A
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Abstract
The invention relates to a drilling-condition-simulated permeability experiment method for a rubber O-shaped sealing ring. The method comprises the following steps: (1) selecting and checking a rubber O-shaped sealing ring sample: according to the specific experiment contents, selecting the specification and the material of the rubber O-shaped sealing ring sample; (2) connecting an experimental device: injecting a Na(OH) developer into an experimental clamp, measuring the current pH value, sealing the experimental clamp by use of a clamp cover in which the sample in embedded, and placing the experimental clamp into a reaction vessel; (3) setting the experimental environment and starting permeating reaction: adding configured formation water to serve as a corrosive environment, adjusting the temperature of the reaction vessel, and keeping the temperature constant; (4) measuring and recording experimental data; (5) processing the data to draw a conclusion: using a related mathematical method to process the obtained parameters to obtain a preferred and performance evaluation result. The drilling-condition-simulated permeability experiment method can evaluate the sealing reliability and the service life of the rubber O-shaped sealing ring and preferably select the material of the rubber O-shaped sealing ring, and is simple and convenient to operate and low in experimental cost.
Description
Technical field
The present invention relates to a kind of RUBBER O RunddichtringO permeability experiment method simulating drilling condition, belong to mechanical component experimental technique field.
Background technology
RUBBER O RunddichtringO is widely used in various static seal and a part of motive seal, and because of its good seal performance and applied widely, in oil/gas drilling with exploitation, various subsurface tool also generally uses RUBBER O RunddichtringO to seal key position.At present, carried out large quantifier elimination for the sealing property of rubber o-ring under different operating mode, the O-ring seal performance study wherein under drilling condition is exactly the direction of an emphasis.Subsurface environment is very severe, and rubber seal is in High Temperature High Pressure height usually containing corrosive medium environment, and these rugged environment factors cause the main cause that rubber seal is aging and be out of shape just.For this reason, for Different Strata select the O-ring seal of suitable material and the performance of research O-ring seal under residing drilling condition and serviceable life the safety to oil-gas mining be very important.
Summary of the invention
The object of the invention is the demand in order to meet O-ring seal performance study, a kind of RUBBER O RunddichtringO permeability experiment method simulating drilling condition is provided, selects the O-ring seal of suitable material and the performance of research O-ring seal under residing drilling condition and serviceable life for Different Strata.
The present invention realizes by the following technical solutions:
Simulate a RUBBER O RunddichtringO permeability experiment method for drilling condition, comprise the steps:
1. select and check RUBBER O RunddichtringO sample: specification and the material of selecting RUBBER O RunddichtringO sample according to specific experiment content, checking sample presentation quality, the geometric parameter before measurement sample does not use;
2. experimental provision is connected: inject Na (OH) developer and test current pH value in laboratory holder, with the clamp cover sealing experiment fixture being embedded with sample, laboratory holder is put into reaction vessel;
3. experimental situation is set, starts permeable reactive: add configuration local water as corrosion environment, regulate reaction vessel temperature and keep constant temperature, passing into N2 and reach predetermined high pressure, keep simulated environment and start permeable reactive;
4. measure and record experimental data: after reaction a period of time, discharge simulated formation water, pressure release also takes out sample after recovering normal temperature, measures sample geometry, physical parameter and fixture internal indicator pH value;
5. process data, obtain conclusion: the relevant mathematical method of application processes getting parms, and obtains preferably and Evaluation results.
The RUBBER O RunddichtringO permeability experiment method of simulation drilling condition provided by the invention proposed according to Research Requirements, and quality and the failure degree of O-ring seal permeability resistance is described by pH value in fixture before and after test experiments and sample geometry, physical parameter.
Advantage of the present invention is: the sealing reliability of the RUBBER O RunddichtringO that the method can use subsurface tool and make assessment serviceable life, can also carry out the RUBBER O RunddichtringO material under different work condition environment preferably, finding the encapsulant of this environment suitable simultaneously.This method is simple, convenient, and experimental cost is low, has larger promotional value.
Accompanying drawing explanation
Fig. 1 is a kind of process flow diagram of simulating the RUBBER O RunddichtringO permeability experiment method of drilling condition of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be described:
As shown in Figure 1, a kind of RUBBER O RunddichtringO permeability experiment method simulating drilling condition of the present invention, comprises the steps:
1. select and check RUBBER O RunddichtringO sample: specification and the material of selecting RUBBER O RunddichtringO sample according to specific experiment content; Check sample presentation quality, require sample surfaces not damaged and flat smooth, meet GB/T3452.2O type rubber seal presentation quality test stone; Geometric parameter before not using with vernier caliper measurement sample, geometric parameter comprises RUBBER O RunddichtringO annular inner and outer diameter, diameter of section.
2. experimental provision is connected: inject Na (OH) developer and test current pH value with pH meter in laboratory holder; With the clamp cover sealing experiment fixture being embedded with sample, after sealing, the initial compression amount of RUBBER O RunddichtringO is 15%, selects different clamp cover to regulate initial compression amount according to different situations; Laboratory holder is put into reaction vessel, is evenly arranged position.
3. experimental situation is set, starts permeable reactive: add configuration local water as corrosion environment, local water is sour corrosion environment under simulation well, and simulated formation water pH value is identical with actual formation well section situation with main mine content of material.Regulate reaction vessel temperature and keep constant temperature.Pass into N2 and reach predetermined high pressure.Keep simulated environment and start permeable reactive.
4. measure and record experimental data: after reaction a period of time, discharge simulated formation water, pressure release also takes out sample after recovering normal temperature.Measure sample geometry, physical parameter and fixture internal indicator pH value, physical parameter comprises tensile strength and the hardness of RUBBER O RunddichtringO.
5. process data, obtain conclusion: the relevant mathematical method of application is analyzed pH value and sample geometry, physical parameter in the fixture of experiment acquisition, obtains preferably and Evaluation results, quality and the failure degree of O-ring seal permeability resistance are described.
Claims (2)
1. simulate a RUBBER O RunddichtringO permeability experiment method for drilling condition, it is characterized in that: comprise the steps:
1. select and check RUBBER O RunddichtringO sample: specification and the material of selecting RUBBER O RunddichtringO sample according to specific experiment content, checking sample presentation quality, the geometric parameter before measurement sample does not use;
2. experimental provision is connected: inject Na (OH) developer and test current pH value in laboratory holder, with the clamp cover sealing experiment fixture being embedded with sample, laboratory holder is put into reaction vessel;
3. experimental situation is set, starts permeable reactive: add configuration local water as corrosion environment, regulate reaction vessel temperature and keep constant temperature, passing into N2 and reach predetermined high pressure, keep simulated environment and start permeable reactive;
4. measure and record experimental data: after reaction a period of time, discharge simulated formation water, pressure release also takes out sample after recovering normal temperature, measures sample geometry, physical parameter and fixture internal indicator pH value;
5. process data, obtain conclusion: the relevant mathematical method of application processes getting parms, and obtains preferably and Evaluation results.
2. a kind of RUBBER O RunddichtringO permeability experiment method simulating drilling condition according to claim 1, it is characterized in that: local water is sour corrosion environment under simulation well, simulated formation water pH value is identical with actual formation well section situation with main mine content of material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510372078.0A CN104990852A (en) | 2015-06-30 | 2015-06-30 | Drilling-condition-simulated permeability experiment method for rubber O-shaped sealing ring |
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| CN201510372078.0A CN104990852A (en) | 2015-06-30 | 2015-06-30 | Drilling-condition-simulated permeability experiment method for rubber O-shaped sealing ring |
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| CN104990852A true CN104990852A (en) | 2015-10-21 |
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| CN201510372078.0A Pending CN104990852A (en) | 2015-06-30 | 2015-06-30 | Drilling-condition-simulated permeability experiment method for rubber O-shaped sealing ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956052A (en) * | 2018-05-04 | 2018-12-07 | 中国石油化工股份有限公司 | A kind of rubber seal method for testing performance of resistance to carbon dioxide |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4022128B2 (en) * | 2002-11-08 | 2007-12-12 | 株式会社東洋精機製作所 | Gas permeability measuring method and apparatus |
| CN201372765Y (en) * | 2009-01-07 | 2009-12-30 | 中国石油大学(北京) | Testing device of rubber cylinder of packer |
| CN102661836A (en) * | 2012-05-18 | 2012-09-12 | 西南石油大学 | Method and device for detecting sealing performance and corrosion performance of rubber under pressure state |
| CN104316446A (en) * | 2014-10-09 | 2015-01-28 | 长安大学 | Experimental device and test method for detecting dimethyl ether penetrative diffusion resistance of rubber seal ring |
| CN104316453A (en) * | 2014-10-29 | 2015-01-28 | 西南石油大学 | Test fixture for testing resistance to high-temperature, high-pressure and high-corrosive medium of rubber sealing ring |
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2015
- 2015-06-30 CN CN201510372078.0A patent/CN104990852A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4022128B2 (en) * | 2002-11-08 | 2007-12-12 | 株式会社東洋精機製作所 | Gas permeability measuring method and apparatus |
| CN201372765Y (en) * | 2009-01-07 | 2009-12-30 | 中国石油大学(北京) | Testing device of rubber cylinder of packer |
| CN102661836A (en) * | 2012-05-18 | 2012-09-12 | 西南石油大学 | Method and device for detecting sealing performance and corrosion performance of rubber under pressure state |
| CN104316446A (en) * | 2014-10-09 | 2015-01-28 | 长安大学 | Experimental device and test method for detecting dimethyl ether penetrative diffusion resistance of rubber seal ring |
| CN104316453A (en) * | 2014-10-29 | 2015-01-28 | 西南石油大学 | Test fixture for testing resistance to high-temperature, high-pressure and high-corrosive medium of rubber sealing ring |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956052A (en) * | 2018-05-04 | 2018-12-07 | 中国石油化工股份有限公司 | A kind of rubber seal method for testing performance of resistance to carbon dioxide |
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Application publication date: 20151021 |