CN101942293A - Formula of defoaming agent for drilling fluid and processing technique - Google Patents
Formula of defoaming agent for drilling fluid and processing technique Download PDFInfo
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- CN101942293A CN101942293A CN2010102322016A CN201010232201A CN101942293A CN 101942293 A CN101942293 A CN 101942293A CN 2010102322016 A CN2010102322016 A CN 2010102322016A CN 201010232201 A CN201010232201 A CN 201010232201A CN 101942293 A CN101942293 A CN 101942293A
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Abstract
The invention provides a formula of a defoaming agent for drilling fluid and a processing technique. The processing technique comprises the following steps of: (1) adding dimethyl silicon oil, oleic acid and emulsifier according to a proportion, stirring the mixture, heating the mixture to between 110 and 150 DEG C, and preserving the heat of the mixture for 2 to 3 hours to form silicon oil paste; (2) adding ethoxyl cellulose into softened water of a beaker while stirring, then heating the mixture to 65 DEG C, and keeping the temperature for 20 minutes till dissolving to form thickener solution; and (3) mixing the thickener solution and the silicon oil paste, heating the mixture to between 70 and 75 DEG C, stirring the mixture for 20rain, adding polyether into the mixture, continuously stirring the mixture for 30rain at a high speed, cooling the mixture to between 50 and 60 DEG C, slowly adding preservative into the mixture, stirring the mixture for 20rain, and cooling the mixture to room temperature. The defoaming agent has the advantages of high temperature resistance, no fluorescent interference, no toxicity, biodegradability and the like.
Description
Technical field
The present invention relates to a kind of prescription and complete processing of composition, the prescription and the complete processing of the defoamer that especially a kind of drilling fluid is used.
Background technology
Foam often produces adverse influence to wellbore construction, and in recent years, along with the expansion of drilling fluid system scale, also more and more stricter to the requirement of drilling well material, technology content is also more and more higher.Various defoamer arises at the historic moment at present.The froth breaking technology has also obtained using widely in all trades and professions.At present, defoamer is broadly divided into organosilicon type, polyethers and non-silicon type 3 classes from forming.Wherein silicone antifoam agent is compared with other two defoamer and is had that froth breaking power is strong, high temperature resistant, non-volatile, nontoxic, chemical property is stablized, be insoluble to characteristics such as foaming medium, is a most widely used class froth breaking product.Existing defoamer has pollution to environment, and is inapplicable to saline and alkaline area, and various water-based drilling liquid system are needed compatibility, uses inconvenient.
Summary of the invention
The objective of the invention is to avoid the deficiencies in the prior art and a kind of drilling fluid prescription and complete processing with defoamer be provided.
The technical solution adopted in the present invention is:
A kind of drilling fluid is dimethyl silicone oil 21% (mass percent) with the prescription and the complete processing of defoamer, its prescription; Polyethers 0.8-1.5% (mass percent); Emulsifying agent 1.5-2.0%; (5) oleic acid 11% (mass percent); (6) Natvosol 0.3% (mass percent); (7) sanitas 5% (mass percent).
Optimum formula is dimethyl silicone oil 21% (mass percent); Polyethers 1.2% (mass percent); Emulsifying agent 1.5%; (5) oleic acid 11% (mass percent); (6) Natvosol 0.3% (mass percent); (7) sanitas 5% (mass percent).
Described emulsifying agent is mixed by class 60 of department and soil temperature 60, and its proportioning is 0.8: 1-1.6: 1.
Class 60 of described department and soil temperature 60 best proportionings are 1.2: 1.
Complete processing is:
(1) add dimethyl silicone oil, oleic acid, emulsifying agent in proportion, stir, be warming up to 110-150 ℃, insulation 2-3h becomes silicone oil cream;
(2) add the fine little element of hydroxyethyl in the softening water of beaker, the limit edged stirs, and is heated to 65 ℃ then, keeps 20min, to dissolving, becomes thickener soln;
(3) thickener soln is mixed with silicone oil cream, is heated to 70-75 ℃, stir 20rain after, add polyethers, continue high-speed stirring 30rain, be cooled to 50-60 ℃ after, slowly add sanitas, stir 20rain, reduce to room temperature.
The present invention's advantage compared with prior art is:
(1) has resistance to elevated temperatures.General defoamer temperature reaches the effect that will lose froth breaking after 100 ℃, and this product temperature resistance can arrive 120 ℃.
(2) no fluorescence interference.Both can be used for general recovery well, also can be used for the prospect pit strict fluorescence.
(3) nontoxic, biodegradable.Both can be used for general land drilling well, also can be used for the land and marine drilling of environmental requirement harshness, water body and marine organisms had not been had influence.
(4) froth breaking and to press down bubble remarkably productive in 4% salt-water drilling fluid can be used in all fresh water slurry system and the salt slurries drilling fluid system.
Embodiment
The organic silicon modified by polyether defoamer is to select to have strong with hydrophobicity, the broken defoamer that to steep dimethyl silicone oil rapidly be main component becomes to be grouped into the emulsifying agent that silicone oil and polyethers are combined, stablizer etc. of the polyethers that presses down the bubble ability more by force.It has that surface tension is low, froth breaking rapidly, press down long, characteristics such as cost is low, no fluorescence, pollution-free, anti-salt, consumption are few, wide application of bubble time.This product is that main raw material is prepared a kind of novel salt-resistant defoamer by technology such as grafting, emulsifications with the dimethyl silicone oil,
A kind of drilling fluid is dimethyl silicone oil 21% (mass percent) with the prescription and the complete processing of defoamer, its prescription; Polyethers 0.8-1.5% (mass percent); Emulsifying agent 1.5-2.0%; (5) oleic acid 11% (mass percent); (6) Natvosol 0.3% (mass percent); (7) sanitas 5% (mass percent).
Optimum formula is dimethyl silicone oil 21% (mass percent); Polyethers 1.2% (mass percent); Emulsifying agent 1.5%; (5) oleic acid 11% (mass percent); (6) Natvosol 0.3% (mass percent); (7) sanitas 5% (mass percent).
Described emulsifying agent is mixed by class 60 of department and soil temperature 60, and its proportioning is 0.8: 1-1.6: 1.
Class 60 of described department and soil temperature 60 best proportionings are 1.2: 1.
Complete processing is:
(1) add dimethyl silicone oil, oleic acid, emulsifying agent in proportion, stir, be warming up to 110-150 ℃, insulation 2-3h becomes silicone oil cream;
(2) add the fine little element of hydroxyethyl in the softening water of beaker, the limit edged stirs, and is heated to 65 ℃ then, keeps 20min, to dissolving, becomes thickener soln;
(3) thickener soln is mixed with silicone oil cream, is heated to 70-75 ℃, stir 20rain after, add polyethers, continue high-speed stirring 30rain, be cooled to 50-60 ℃ after, slowly add sanitas, stir 20rain, reduce to room temperature.
The performance test of defoamer:
Evaluating method: in the 50mL standard colorimetric tube, add the sodium dodecyl benzene sulfonate aqueous solution of 20mL 2%, stopper, with the speed of the 60 times/min 1min that vertically vibrates, Dropwise 5 drips 5% defoamer, and the record foam disappears the time entirely.Time is short more, and froth breaking power is high more.
Press down the bubble force test method: the colorimetric liquid in pipe after the froth breaking test, no longer add defoamer, with the speed of the 60 times/min 20s that vertically vibrates, leave standstill the last elimination time of bubble of investigating, record froth breaking number of times.Froth breaking number of times number has embodied the quality that presses down bubble property.The time of lather collapse is called foam time for the first time, no longer adds defoamer subsequently, and the lather collapse time is observed in the static back of proceeding to vibrate for the second time.Repeating the lather collapse time equally is a prescribed value, and the multiplicity of this moment is called the froth breaking number of times.Froth breaking often, suds suppressing properties is good.
After tested, the technical indicator of gained test fluid is: outward appearance is the oyster white thick liquid; PH value 6-9; Fresh water pulp density recovery rate 〉=80.0%; 4% salt slurries density recovery rate 〉=85.0%.
Two kinds of compound emulsifying agent quality contrast than emulsification dimethyl-silicon oil-proofness
| Class of department 60 | Soil temperature 60 | Emulsion state |
| 0.8 | 1.0 | Layering is obvious |
| 1.0 | 1.0 | Slight layering |
| 1.2 | 1.0 | Evenly not stratified |
| 1.4 | 1.0 | Slight layering |
| 1.6 | 1.0 | Layering is obvious |
Dimethyl silicone oil is with department class 60 and the soil temperature 60 composite emulsifying agents of doing, and emulsion is the most stable when the proportioning of class 60 of department and soil temperature 60 is 1.2: 1.
The compound emulsifying agent massfraction is to the influence of stability of emulsion and foam time
| Emulsifying agent, % | Foam time, s | Emulsion state |
| 0.5 | 55 | Layering |
| 1.0 | 28 | Layering |
| 1.5 | 22 | Evenly |
| 2.0 | 21 | Evenly |
Along with the increase of compound emulsifying agent massfraction, stability of emulsion and defoaming effect all improve, but the emulsifying agent massfraction is too high, and production cost increases.Therefore, the massfraction of compound emulsifying agent is 1.5% best in the emulsion.
The dimethyl silicone oil different viscosity is to froth breaking and press down the influence of steeping
| The dimethyl-silicon oil viscosity, mPa.s | Foam time, s | The froth breaking number of times |
| 500 | 10 | 8 |
| 800 | 13 | 15 |
| 100 | 18 | 16 |
With viscosity be 800mPa.s the dimethyl silicone oil froth breaking, to suppress effect best
Do of the influence of adding polyethers consumption with 4% salt slurries to defoamer
| The polyethers consumption, % | Foam time, s | Press down the bubble time |
| 0 | 18 | 38 |
| 1.2 | 10 | 15 |
| 1.5 | 13 | 20 |
The defoamer of interpolation 1.2% (mass percent) polyethers has greatly improved with pressing down to steep to the froth breaking of salt slurries.
Claims (5)
1. the prescription and the complete processing of a drilling fluid usefulness defoamer is characterized in that its prescription is dimethyl silicone oil 21% (mass percent); Polyethers 0.8-1.5% (mass percent); Emulsifying agent 1.5-2.0%; (5) oleic acid 11% (mass percent); (6) Natvosol 0.3% (mass percent); (7) sanitas 5% (mass percent).
2. a kind of drilling fluid according to claim 1 is characterized in that with the prescription and the complete processing of defoamer optimum formula is dimethyl silicone oil 21% (mass percent); Polyethers 1.2% (mass percent); Emulsifying agent 1.5%; (5) oleic acid 11% (mass percent); (6) Natvosol 0.3% (mass percent); (7) sanitas 5% (mass percent).
3. a kind of drilling fluid according to claim 1 is characterized in that with the prescription and the complete processing of defoamer described emulsifying agent is mixed by class 60 of department and soil temperature 60, and its proportioning is 0.8: 1-1.6: 1.
4. according to the prescription and the complete processing of claim 1 or 3 described a kind of drilling fluids usefulness defoamers, it is characterized in that class 60 of described department and soil temperature 60 best proportionings are 1.2: 1.
5. a kind of drilling fluid according to claim 1 prescription and complete processing of defoamer is characterized in that complete processing is:
(1) add dimethyl silicone oil, oleic acid, emulsifying agent in proportion, stir, be warming up to 110-150 ℃, insulation 2-3h becomes silicone oil cream;
(2) add the fine little element of hydroxyethyl in the softening water of beaker, the limit edged stirs, and is heated to 65 ℃ then, keeps 20min, to dissolving, becomes thickener soln;
(3) thickener soln is mixed with silicone oil cream, is heated to 70-75 ℃, stir 20rain after, add polyethers, continue high-speed stirring 30rain, be cooled to 50-60 ℃ after, slowly add sanitas, stir 20rain, reduce to room temperature.
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| CN201010232201.6A CN101942293B (en) | 2010-07-21 | 2010-07-21 | A kind of defoaming agent for drilling fluid |
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|---|---|---|---|
| CN201010232201.6A CN101942293B (en) | 2010-07-21 | 2010-07-21 | A kind of defoaming agent for drilling fluid |
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| CN101942293A true CN101942293A (en) | 2011-01-12 |
| CN101942293B CN101942293B (en) | 2016-07-27 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102649021A (en) * | 2012-05-03 | 2012-08-29 | 安微銮威化工科技开发有限公司 | Non-silicon composite emulsion type antifoaming agent and preparation method thereof |
| CN103589404A (en) * | 2013-10-29 | 2014-02-19 | 廖煜明 | Phenanthrene-series isomerism slurry foam inhibitor |
| CN103666413A (en) * | 2013-10-10 | 2014-03-26 | 李火莲 | Hexahydrotoluene antifoaming agent |
| CN103773326A (en) * | 2012-10-23 | 2014-05-07 | 中国石油天然气集团公司 | Drilling fluid antifoaming agent |
| CN104548674A (en) * | 2013-10-24 | 2015-04-29 | 中国石油化工股份有限公司 | High-temperature resistant antifoamer composition and preparation method thereof |
| CN104830307A (en) * | 2015-04-24 | 2015-08-12 | 安科顺泰能源科技（北京）有限责任公司 | Organosilicone polyether emulsion type defoaming agent for fracturing fluid and preparation method thereof |
| WO2015120751A1 (en) * | 2014-02-13 | 2015-08-20 | 东方宝麟科技发展(北京)有限公司 | Reagent for cracking shale oil and gas well and product thereof |
| CN106082775A (en) * | 2016-06-07 | 2016-11-09 | 中国石油集团渤海钻探工程有限公司 | Latex cement defoaming agent and preparation method thereof |
| CN106833559A (en) * | 2016-12-30 | 2017-06-13 | 汪逸凡 | A kind of preparation method of the special-purpose water-based organic silicon defoamer of drilling mud |
| CN111748327A (en) * | 2020-06-30 | 2020-10-09 | 中国石油天然气集团有限公司 | Environment-friendly defoaming agent for drilling fluid and preparation method thereof |
| CN112007386A (en) * | 2020-09-01 | 2020-12-01 | 武汉思越化学技术有限公司 | Non-organic silicon defoaming agent |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649021A (en) * | 2012-05-03 | 2012-08-29 | 安微銮威化工科技开发有限公司 | Non-silicon composite emulsion type antifoaming agent and preparation method thereof |
| CN103773326B (en) * | 2012-10-23 | 2016-03-09 | 中国石油天然气集团公司 | Drilling fluid defoamer |
| CN103773326A (en) * | 2012-10-23 | 2014-05-07 | 中国石油天然气集团公司 | Drilling fluid antifoaming agent |
| CN103666413A (en) * | 2013-10-10 | 2014-03-26 | 李火莲 | Hexahydrotoluene antifoaming agent |
| CN104548674A (en) * | 2013-10-24 | 2015-04-29 | 中国石油化工股份有限公司 | High-temperature resistant antifoamer composition and preparation method thereof |
| CN104548674B (en) * | 2013-10-24 | 2016-05-18 | 中国石油化工股份有限公司 | A kind of high temperature resistant defoamer composition and method of making the same |
| CN103589404A (en) * | 2013-10-29 | 2014-02-19 | 廖煜明 | Phenanthrene-series isomerism slurry foam inhibitor |
| WO2015120751A1 (en) * | 2014-02-13 | 2015-08-20 | 东方宝麟科技发展(北京)有限公司 | Reagent for cracking shale oil and gas well and product thereof |
| CN104830307A (en) * | 2015-04-24 | 2015-08-12 | 安科顺泰能源科技（北京）有限责任公司 | Organosilicone polyether emulsion type defoaming agent for fracturing fluid and preparation method thereof |
| CN104830307B (en) * | 2015-04-24 | 2018-05-11 | 重庆鼎顺隆能源技术有限责任公司 | A kind of fracturing fluid organic silicon polyether emulsion type defoaming agent and preparation method thereof |
| CN106082775A (en) * | 2016-06-07 | 2016-11-09 | 中国石油集团渤海钻探工程有限公司 | Latex cement defoaming agent and preparation method thereof |
| CN106833559A (en) * | 2016-12-30 | 2017-06-13 | 汪逸凡 | A kind of preparation method of the special-purpose water-based organic silicon defoamer of drilling mud |
| CN111748327A (en) * | 2020-06-30 | 2020-10-09 | 中国石油天然气集团有限公司 | Environment-friendly defoaming agent for drilling fluid and preparation method thereof |
| CN112007386A (en) * | 2020-09-01 | 2020-12-01 | 武汉思越化学技术有限公司 | Non-organic silicon defoaming agent |
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Effective date of registration: 20210426 Address after: No.19, Beier Road, Haojia industrial and trade development base, Kenli District, Dongying City, Shandong Province, 257500 Patentee after: Shandong Jiaozhou petroleum additives Co.,Ltd. Address before: 257500 No. two, 19 North Road, Kenli County, Shandong, Dongying Patentee before: SHANDONG LUHAI DRILLING & PRODUCTION TECHNOLOGY Co.,Ltd. |