CN102375012A - Method for cleaning glass electrode used for on-line measurement of pH value of drilling fluid - Google Patents
Method for cleaning glass electrode used for on-line measurement of pH value of drilling fluid Download PDFInfo
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- CN102375012A CN102375012A CN2010102495566A CN201010249556A CN102375012A CN 102375012 A CN102375012 A CN 102375012A CN 2010102495566 A CN2010102495566 A CN 2010102495566A CN 201010249556 A CN201010249556 A CN 201010249556A CN 102375012 A CN102375012 A CN 102375012A
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- glass electrode
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- polyacrylamide
- drilling
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Abstract
The invention discloses a method for cleaning a glass electrode used for on-line measurement of pH value of drilling fluid, aiming at solving the problem of inaccurate measuring result due to easy pollution even scaling of sensitive portions of the electrode when on-line glass electrode is used for measuring the pH value of the drilling fluid in petroleum drilling. The method adopts polyacrylamide and a dilute solution of surfactant as the cleaning fluid, and uses a method of spray cleaning, thus the glass electrode can be cleaned effectively, and the accurate and long-term on-line measurement of the pH value of the drilling fluid is guaranteed. According to the method, the service life of the glass electrode can satisfy the requirement of on-line measurement. The addition of polyacrylamide is 0.01-0.1 %, and the addition of the surfactant is 1-5 %. Polyacrylamide can be homopolymer and also can be partially hydrolyzed polyacrylamide. The surfactant is nonionic.
Description
Technical field
The present invention relates to the cleaning method of the glass electrode of pH on-line measurement, in particular for the cleaning method of the glass electrode of the pH on-line measurement of drilling fluid.
Background technology
In oil/gas drilling, drilling fluid is essential, and it can carry drilling cuttings, cleans well, lubricated drill bit.Drilling fluid commonly used is a water-base drilling fluid, contains inorganic particles such as clay, drilling cuttings, schohartite in the water-base drilling fluid, also possibly contain the oiliness composition of crude oil.The pH value of water-base drilling fluid is the key parameter that influences property of drilling fluid, is generally neutral to alkalescence.
PH meter is an important analysis meter in producing, and has begun to be used in the petroleum drilling industry on-line measurement of drilling fluid in recent years.The pH electrode is the accurate detecting element of a kind of ten minutes, in use, usually contaminated even fouling, thus cause pH value measuring error to strengthen, and sensitivity reduces, bad stability.The artificial pH electrode that cleans is unfavorable for on-the-spot robotization, therefore should adopt automatically and clean.The method of cleaning automatically has ultrasonic cleaning, chemical solution jet cleaning, water jet cleaning, mechanical cleaning etc.Ultrasonic cleaning needs special ultrasonic generator, and cost is high, installs inconvenient.Chemical solution cleans is used solution such as hydrochloric acid, nitric acid at present, and acid solution has corrosivity, and pollutes drilling fluid easily.Nozzle is installed in the jet cleaning of water jet cleaning water below electrode, the water that has certain pressure is sprayed onto the sensitive part of electrode discontinuously through nozzle, and flushing sticks to the pollutant on the electrode.This cleaning method needs clean water, and during drilling well in the open air, is difficult to obtain clean water source.Adopt on-the-spot water source, also have solid phases such as clay, sand in the water, the long-term use glass electrode of can wearing and tearing reduces life-span of glass electrode.
Application number is 00268773 suitable novel patent " two glass electrode pH value automatic detection device ", and its cleaning fluid that adopts is an acid solution, and not offering some clarification on is the measurement to drilling fluid.Contain inorganic particles such as clay, drilling cuttings, schohartite in the drilling fluid, generally also contain crude oil, more easily to the polluting and stopping up of glass electrode, conventional electrode cleaning technique is difficult to reach the requirement of on-line measurement than other water quality.
Summary of the invention
To the deficiency of prior art, the present invention provides the cleaning method of the pH glass electrode of a kind of drilling fluid pH on-line measurement.The inventive method has overcome the deficiency of existing water jet cleaning and chemical solution jet cleaning.
Find through experiment, in the on-the-spot water of drilling well, add certain density polyacrylamide and surfactant, be made into the electrode cleaning fluid; Jet cleaning then; Can be effectively the sensitive part of electrode be cleaned, keep the cleaning of glass electrode, it is accurately stable that measurement result keeps.Like this; Just need in water, not add hydrochloric acid or nitric acid; Simultaneously, increased the life-span of electrode because the WS of polyacrylamide has good lubricity and to the encapsulating of solid phase particles, significantly reduced the wearing and tearing of the solid phase particles in the water to the sensitive part of glass electrode.The preferred non-ionics of surfactant, like span 80, OP10, Tween 80.Surfactant helps the cleaning to greasy dirt, also can increase the lubricity of cleaning fluid.The addition of polyacrylamide is 0.01 to 0.1%, and the addition of surfactant is between 1% to 5%.
Embodiment
Xiang Shuizhong adds a certain amount of polyacrylamide and surfactant, and wiring solution-forming is as the cleaning fluid of electrode.Cleaning fluid cleans shower nozzle through one near the electrode, and shower nozzle regularly sprays cleaning fluid.It is fixing that the position of electrode keeps, and the injection of solution is controlled by programming controller, has timing function.In addition, also having a kind of solution cleaning method is through instrument control, and the pH meter probe is regularly drawn in the purge chamber, and feed the cleaning fluid cleaning electrode this moment again, then probe stretched into measuring channel.But the polyacrylamide homopolymer also can be a partially hydrolyzed polyacrylamide, and surfactant should adopt non-ionics, like the Span class, and Tween class, OP class.
The solution of polyacrylamide and surfactant is compared water as cleaning fluid, and outstanding cleaning performance is arranged.Acrylic amide is water-soluble macromolecule, and high molecular amide group is adsorbed onto the surface of solid particle easily.Be adsorbed onto the surface of solid phase particles in the water such as sand and clay particle, can reduce the impact of solid particle, reduce wearing and tearing glass electrode to the glass electrode sensitive part.The lean solution of polyacrylamide has certain viscosity, has effect of dragging, when cleaning fluid is ejected into the electrode sensitive position, help with the surface stick thing or even dirt towing is gone down, help cleaning.Surfactant helps the cleaning of oily dirt, also increases the lubricity of cleaning fluid, reduces the wearing and tearing of cleaning fluid to electrode.
Further specify the present invention program and effect through specific embodiment below, but can not think that the present invention is only in these instances.
Instance 1
Glass electrode is 4560 types of Mei Tele company, adopts jet cleaning method to clean, and sprays once in per 10 minutes.Cleaning fluid adopts the water in the stream, adds 0.07% polyacrylamide homopolymer, adds 2% Span80, as cleaning fluid.Continuous coverage aqueous-based polymers drilling fluid is after 10 days, and the pH reading accurately and reliably still.
Instance 2
Glass electrode is 4560 types of Mei Tele company, adopts jet cleaning method to clean, and sprays once in per 60 minutes.Cleaning fluid adopts the water in situ of drilling well systemic circulation pond, adds 0.1% polyacrylamide homopolymer, and 5% Tween80 is made into the cleaning fluid of electrode.Continuous coverage aqueous-based polymers drilling fluid is after 10 days, and the pH reading accurately and reliably still.
Instance 3
Glass electrode is 4560 types of Mei Tele company, adopts jet cleaning method to clean, and sprays once in per 60 minutes.Cleaning fluid adopts the water in situ of drilling well systemic circulation pond, adds 0.05% partially hydrolyzed polyacrylamide superpolymer, adds 3% OP4, is made into the cleaning fluid of electrode.Continuous coverage aqueous-based polymers drilling fluid is after 10 days, and the pH reading accurately and reliably still.
Instance 4
Glass electrode is 4560 types of Mei Tele company, adopts jet cleaning method to clean, and sprays once in per 60 minutes.Cleaning fluid adopts the water in situ of drilling well systemic circulation pond, adds 0.01% partially hydrolyzed polyacrylamide superpolymer, and 1% Span80 is made into the cleaning fluid of electrode.Continuous coverage aqueous-based polymers drilling fluid is after 10 days, and the pH reading accurately and reliably still.
Comparative example 1
Glass electrode is the InPro4260 type of Mei Tele company, adopts jet cleaning method to clean, and sprays once in per 60 minutes.Cleaning fluid adopts the water in situ of drilling well systemic circulation pond, does not add other compositions again.Continuous coverage aqueous-based polymers drilling fluid is after 3 days, and the glass electrode of pH is damaged, and reason is due to the solid phase particles in the water weares and teares.
Claims (6)
1. the cleaning method of the glass electrode used of the on-line measurement of a drilling liquid pH value is characterized in that Xiang Shuizhong adds a certain amount of polyacrylamide and surfactant is made into cleaning fluid, with cleaning fluid the sensitive part of glass electrode is carried out jet cleaning.
2. the cleaning method of the glass electrode used of the on-line measurement of drilling liquid pH value according to claim 1, the addition that it is characterized in that said polyacrylamide is between 0.01% to 0.1%.
3. the cleaning method of the glass electrode used of the on-line measurement of drilling liquid pH value according to claim 1, the addition that it is characterized in that described surfactant is between 1% to 5%.
4. the cleaning method of the glass electrode used of the on-line measurement of drilling liquid pH value according to claim 1 is characterized in that described polyacrylamide is homopolymer or partially hydrolyzed polyacrylamide.
5. the cleaning method of the glass electrode used of the on-line measurement of drilling liquid pH value according to claim 1 is characterized in that described surfactant is a non-ionics.
6. the cleaning method of the glass electrode used of the on-line measurement of drilling liquid pH value according to claim 1 is characterized in that described water is at the used water of situ of drilling well preparation drilling fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102495566A CN102375012A (en) | 2010-08-10 | 2010-08-10 | Method for cleaning glass electrode used for on-line measurement of pH value of drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102495566A CN102375012A (en) | 2010-08-10 | 2010-08-10 | Method for cleaning glass electrode used for on-line measurement of pH value of drilling fluid |
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|---|---|
| CN102375012A true CN102375012A (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2010102495566A Pending CN102375012A (en) | 2010-08-10 | 2010-08-10 | Method for cleaning glass electrode used for on-line measurement of pH value of drilling fluid |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645520A (en) * | 2012-05-11 | 2012-08-22 | 常州智能农业装备研究院有限公司 | Liquid detection device and control method thereof |
| CN104569111A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Online measurement device and method for ionic concentration of drilling fluid |
| CN104569110A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Device for measuring ion concentration of drilling fluid |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203259A (en) * | 1998-07-10 | 1998-12-30 | 钟伟明 | Protectant for sedan glass |
| CN1203258A (en) * | 1998-07-10 | 1998-12-30 | 钟伟明 | Detergent for sedan |
| CN101413916A (en) * | 2008-11-28 | 2009-04-22 | 钦州华成自控设备有限公司 | Full-automatic detection device of double-glass pH electrode |
| CN201293767Y (en) * | 2007-04-28 | 2009-08-19 | 钦州华成自控设备有限公司 | On-line automatic cleaning and detecting device for double electrodes |
| CN102103120A (en) * | 2010-12-23 | 2011-06-22 | 钦州华成自控设备有限公司 | Improved double-glass pH electrode fully automatic detection device |
-
2010
- 2010-08-10 CN CN2010102495566A patent/CN102375012A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203259A (en) * | 1998-07-10 | 1998-12-30 | 钟伟明 | Protectant for sedan glass |
| CN1203258A (en) * | 1998-07-10 | 1998-12-30 | 钟伟明 | Detergent for sedan |
| CN201293767Y (en) * | 2007-04-28 | 2009-08-19 | 钦州华成自控设备有限公司 | On-line automatic cleaning and detecting device for double electrodes |
| CN101413916A (en) * | 2008-11-28 | 2009-04-22 | 钦州华成自控设备有限公司 | Full-automatic detection device of double-glass pH electrode |
| CN102103120A (en) * | 2010-12-23 | 2011-06-22 | 钦州华成自控设备有限公司 | Improved double-glass pH electrode fully automatic detection device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645520A (en) * | 2012-05-11 | 2012-08-22 | 常州智能农业装备研究院有限公司 | Liquid detection device and control method thereof |
| CN104569111A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Online measurement device and method for ionic concentration of drilling fluid |
| CN104569110A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Device for measuring ion concentration of drilling fluid |
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Application publication date: 20120314 |