CN105368415A - Preparation method for polyester lubricant used for drilling fluid - Google Patents
Preparation method for polyester lubricant used for drilling fluid Download PDFInfo
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- CN105368415A CN105368415A CN201510871303.5A CN201510871303A CN105368415A CN 105368415 A CN105368415 A CN 105368415A CN 201510871303 A CN201510871303 A CN 201510871303A CN 105368415 A CN105368415 A CN 105368415A
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- drilling fluid
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
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- General Life Sciences & Earth Sciences (AREA)
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- Lubricants (AREA)
Abstract
The invention discloses a preparation method for a polyester lubricant used for drilling fluid. The preparation method comprises the steps of: 1) performing operations of vacuum filtration, washing, decolorization, standing for stratification, and vacuum drying and purification on waste animal and vegetable oil to obtain refined grease; 2) pouring the refined grease into a three-mouth flask, adding 15-25% diethylene glycol and 1-3% ethanolamine and stirring the mixture, slowly heating the mixture to 130-150 DEG C, and preserving the temperature for 2-4 hours to generate yellowish liquid; 3) then stirring the liquid again, slowly adding 4-8% sulfur in the stirring process, slowly heating the liquid to 140-160 DEG C and preserving the temperature for 4-8 hours to generate a deep yellow sticky liquid; and 4) finally adding 10-20% oil soluble resin, and uniformly mixing and stirring the mixture at 70-90 DEG C to obtain the polyester lubricant for the drilling fluid. The preparation method disclosed by the invention is simple in process, and the prepared lubricant has a relatively low fluorescence level and a good lubricating property, has the characteristics of being non-toxic, pollution-free, low in fluorescence, high-temperature-resistant, salt-resistant and the like, and is good in compatibility with various drilling fluid additives.
Description
Technical field
The present invention relates to oil and gas well drilling technical field, exactly relate to a kind of preparation method of drilling fluid polyester lubricant.
Background technology
In the process of petroleum exploration and development, along with increasing of long horizontal well, extended reach well and special well, need to use a large amount of lubricant for drilling fluids, its effect improves drilling fluid lubricating performance, reduce drilling tool, friction resistance between sleeve pipe and the borehole wall, improve rate of penetration, ensure downhole safety.Lubricant mainly mineral oils and tensio-active agent series lubricant agent comparatively conventional at present.These conventional lubricant have higher fluorescence grade mostly, larger on the analysis and inspection impact of geological logging.In addition, along with the pay attention to day by day to environment protection, conventional mineral oil lubricant is difficult to biological degradation, unfriendly to environment.
Publication number is 104559971A, publication date is that the Chinese patent literature on April 29th, 2015 discloses a kind of drilling fluid oil base sewer oil lubricant, it comprises the component of following weight percent: sewer oil 90% ~ 95%, sanitas 0.1% ~ 0.15%, oxidation inhibitor 0.5% ~ 1%, extreme-pressure additive 5% ~ 7%, UV light absorber 0.1% ~ 0.15%, pour point depressant 0.5% ~ 1%.Its preparation process is:
Step 1) in closed reactor, add 90-95% sewer oil, start to stir, when temperature of reaction kettle reaches 80 DEG C, stir and add 0.1%-0.15% sanitas and react 40 minutes;
Step 2) add 0.55 ~ 1% oxidation inhibitor, 5-7% extreme-pressure additive, 0.1%-O.15% UV light absorber stirring reaction stop heating stirring after 20 minutes, to normal temperature, 0.5% ~ 1% pour point depressant is added wait drying in the air, stirring at normal temperature 10 minutes, obtained drilling fluid oil base sewer oil lubricant.
Be not difficult to find out from technique scheme, program desired raw material is more, preparation technology's relative complex, and prepared lubricant can not meet the drilling condition condition of some harshness, and the sanitas added, extreme-pressure additive to environment, can be unsuitable for popularity application.
Summary of the invention
The present invention is intended to for the defect existing for above-mentioned prior art and deficiency, a kind of preparation method of drilling fluid polyester lubricant is provided, present method technique is simple, prepared lubricant has lower fluorescence grade, good lubricity, nontoxic, pollution-free, the feature such as low Poison, high temperature resistance, anti-salt, good with all kinds of drilling fluid additive compatibleness, the requirement as drilling operations such as deep-well, extended reach well, horizontal wells can be met, production technique is easy to control, the desirable treatment agent of environmentally sensitive area exploratory development, application and promotion prospect better.
The present invention realizes by adopting following technical proposals:
A preparation method for drilling fluid polyester lubricant, is characterized in that step is as follows:
1) the animal-plant oil vacuum filtration, by discarded, washing, decolouring, stratification, vacuum-drying cleansing operation, obtain the grease refined;
2), get refining grease and pour in there-necked flask, add the Diethylene Glycol of 15-25% and the thanomin of 1-3%, stir, be slowly heated to 130-150 DEG C, insulation 2-4h, generates weak yellow liquid;
3) and then stir, in whipping process, slowly add the sulphur of 4-8%, be slowly heated to 140-160 DEG C, insulation 4-8h, generate deep yellow stick thick liquid;
4), finally, add the oil-soluble resin of 10-20%, 70-90 DEG C of mixing, stir, be i.e. obtained drilling fluid polyester lubricant;
The per-cent added in each step all refers to: relative to the quality of refining grease, the per-cent that each raw material adds.
Described step 2) in, add 20% Diethylene Glycol and 2% thanomin, stir, be slowly heated to 140 DEG C, insulation 3h, generates weak yellow liquid.
In described step 3), in whipping process, add the sulphur of 6%, be slowly heated to 150 DEG C, insulation 6h, generate deep yellow and stick thick liquid.
In described step 4), add the oil-soluble resin of 15%, 80 DEG C of mixing, stir, be i.e. obtained drilling fluid polyester lubricant.
Compared with prior art, the beneficial effect that reaches of the present invention is as follows:
1, adopt step 1)-4 of the present invention) technical scheme, take waste oils and fats as the drilling condition condition that polyester lubricant prepared by raw material can meet some harshness, can be degraded by microorganisms within a short period of time as CO again
2and H
2o can not, to environment, be the lubricant of a kind of " green ".Utilize waste animal and vegetable oil synthetic petroleum drilling well liquid lubricant, not only there is larger economic benefit and also can produce good social benefit.The zero pour of waste animal and vegetable oil own is high, poor heat stability, oilness are not strong, easy saponification in alkaline environment before unmodified, generate anionic stearate tensio-active agent; Oxidizable, the lubricity of lubricant is reduced greatly, so need to carry out modification targetedly, makes it to reach drilling well demand.Present method utilizes waste animal and vegetable oil to react the ester generating strand for raw material and Diethylene Glycol, then carries out vulcanization reaction with sulphur and introduce active element sulphur, carries out mixing composite, synthesize a kind of drilling fluid polyester lubricant with oil-soluble resin.This lubricant has lower fluorescence grade, good lubricity, nontoxic, pollution-free, the feature such as low Poison, high temperature resistance, anti-salt, good with all kinds of drilling fluid additive compatibleness, the requirement as drilling operations such as deep-well, extended reach well, horizontal wells can be met, production technique is easy to control, and is the desirable treatment agent of environmentally sensitive area exploratory development, application and promotion prospect better.
2, present method, in step 2)---select Diethylene Glycol, thanomin, sulphur and oil-soluble resin respectively in 4.(1) Diethylene Glycol is the liquid of a kind of water white transparency, mechanical impurity, and it can be miscible with ethanol, ether, acetone and ethylene glycol, is insoluble to benzene and tetracol phenixin, water-soluble.The ester class product that transesterification reaction generates straight chain can be carried out with refining grease.(2) thanomin is a kind of primary amine organic compound, can generate salt, generate ester with acid anhydrides effect with mineral acid and organic acid.Hydrogen atom in its amino can by the displacement such as carboxylic acid halides, haloalkane.Softening agent when can be used as synthesizing ester, promotor.(3) sulphur is as a kind of elemental sulfur, by vulcanization reaction, the double bond addition in ester class is generated sulfuration resultant, introduces active sulphur element, change linear ester class product section into netted ester class.(4) oil-soluble resin does not need modification with regard to energy thermosol in oil, might as well with ester class consistency.
3, step 2) in, select Diethylene Glycol and 2% thanomin of 20%, stir, be slowly heated to 140 DEG C, insulation 3h, generates weak yellow liquid.The performance of polyester lubricant depends primarily on the reaction of refining grease and Diethylene Glycol, thanomin, by investigating the impact of dosage on synthetic lubricant of two kinds of monomers, the results are shown in Table 1, table 2.From table, when the dosage of Diethylene Glycol is 20%, the dosage of thanomin is 2% time, and the reduced rate of lubricating coefficient is maximum, is optimum add amount.
4, in step 3), in whipping process, add the sulphur of 6%, be slowly heated to 150 DEG C, insulation 6h, generate deep yellow and stick thick liquid.Because the double bond addition in element S and unsaturated alkyl generates the eliminative reaction that sulfide is unsaturated link(age), temperature of reaction sulphur 140 DEG C ~ 160 DEG C time starts to react with double bond.But when temperature is higher than 200 DEG C, hydrogen can be replaced by sulphur, discharges hydrogen sulfide, and therefore temperature of reaction is unsuitable too high, selects 150 DEG C as temperature of reaction.
5, in step 4), add the oil-soluble resin of 15%, 80 DEG C of mixing, stir, be i.e. obtained drilling fluid polyester lubricant.By changing the dosage of oil-soluble resin, the degree of mobilization of adjustment polyester lubricant and lubricity, the results are shown in Table 3.
Embodiment
Embodiment 1
As the present invention one better embodiment, it comprises the steps:
1) the animal-plant oil vacuum filtration, by discarded, washing, decolouring, stratification, vacuum-drying cleansing operation, obtain the grease refined;
2), get refining grease and pour in there-necked flask, add the Diethylene Glycol of 15% and the thanomin of 1%, stir, be slowly heated to 130 DEG C, insulation 2h, generates weak yellow liquid;
3) and then stir, in whipping process, slowly add the sulphur of 4%, be slowly heated to 140 DEG C, insulation 4h, generate deep yellow stick thick liquid;
4), finally, add the oil-soluble resin of 10%, 70 DEG C of mixing, stir, be i.e. obtained drilling fluid polyester lubricant;
The per-cent added in each step all refers to: relative to the quality of refining grease, the per-cent that each raw material adds.
Embodiment 2
As another better embodiment of the present invention, it comprises the steps:
1) the animal-plant oil vacuum filtration, by discarded, washing, decolouring, stratification, vacuum-drying cleansing operation, obtain the grease refined;
2), get refining grease and pour in there-necked flask, add the Diethylene Glycol of 25% and the thanomin of 3%, stir, be slowly heated to 150 DEG C, insulation 4h, generates weak yellow liquid;
3) and then stir, in whipping process, slowly add the sulphur of 8%, be slowly heated to 160 DEG C, insulation 8h, generate deep yellow stick thick liquid;
4), finally, add the oil-soluble resin of 20%, 90 DEG C of mixing, stir, be i.e. obtained drilling fluid polyester lubricant;
The per-cent added in each step all refers to: relative to the quality of refining grease, the per-cent that each raw material adds.
Embodiment 3
As preferred forms of the present invention, it comprises the steps:
1), by the discarded cleansing operation such as animal-plant oil vacuum filtration, washing, decolouring, stratification, vacuum-drying, the grease refined is obtained
2), get refining grease 300ml and pour in there-necked flask, add 20% Diethylene Glycol and 2% thanomin, stir, be slowly heated to 140 DEG C, insulation 3h, generates weak yellow liquid;
3) and then stir, slowly add the sulphur of 6% in whipping process, be slowly heated to 150 DEG C, insulation 6h, generate deep yellow stick thick liquid;
4), finally, add the oil-soluble resin of 15%, 80 DEG C of mixing, stir, be i.e. obtained drilling fluid polyester lubricant.
The per-cent added in each step all refers to: relative to the quality of refining grease, the per-cent that each raw material adds.
Present method, in step 2)---select Diethylene Glycol, thanomin, sulphur and oil-soluble resin respectively in 4.(1) Diethylene Glycol is the liquid of a kind of water white transparency, mechanical impurity, and it can be miscible with ethanol, ether, acetone and ethylene glycol, is insoluble to benzene and tetracol phenixin, water-soluble.The ester class product that transesterification reaction generates straight chain can be carried out with refining grease.(2) thanomin is a kind of primary amine organic compound, can generate salt, generate ester with acid anhydrides effect with mineral acid and organic acid.Hydrogen atom in its amino can by the displacement such as carboxylic acid halides, haloalkane.Softening agent when can be used as synthesizing ester, promotor.(3) sulphur is as a kind of elemental sulfur, by vulcanization reaction, the double bond addition in ester class is generated sulfuration resultant, introduces active sulphur element, change linear ester class product section into netted ester class.(4) oil-soluble resin does not need modification with regard to energy thermosol in oil, might as well with ester class consistency.
Step 2) in, select Diethylene Glycol and 2% thanomin of 20%, stir, be slowly heated to 140 DEG C, insulation 3h, generates weak yellow liquid.The performance of polyester lubricant depends primarily on the reaction of refining grease and Diethylene Glycol, thanomin, by investigating the impact of dosage on synthetic lubricant of two kinds of monomers, the results are shown in Table 1, table 2.From table, when the dosage of Diethylene Glycol is 20%, the dosage of thanomin is 2% time, and the reduced rate of lubricating coefficient is maximum, is optimum add amount.
In step 3), in whipping process, add the sulphur of 6%, be slowly heated to 150 DEG C, insulation 6h, generate deep yellow and stick thick liquid.Because the double bond addition in element S and unsaturated alkyl generates the eliminative reaction that sulfide is unsaturated link(age), temperature of reaction sulphur 140 DEG C ~ 160 DEG C time starts to react with double bond.But when temperature is higher than 200 DEG C, hydrogen can be replaced by sulphur, discharges hydrogen sulfide, and therefore temperature of reaction is unsuitable too high, selects 150 DEG C as temperature of reaction.
In step 4), add the oil-soluble resin of 15%, 80 DEG C of mixing, stir, be i.e. obtained drilling fluid polyester lubricant.By changing the dosage of oil-soluble resin, the degree of mobilization of adjustment polyester lubricant and lubricity, the results are shown in Table 3.
Claims (4)
1. a preparation method for drilling fluid polyester lubricant, is characterized in that step is as follows:
1) the animal-plant oil vacuum filtration, by discarded, washing, decolouring, stratification, vacuum-drying cleansing operation, obtain the grease refined;
2), get refining grease and pour in there-necked flask, add the Diethylene Glycol of 15-25% and the thanomin of 1-3%, stir, be slowly heated to 130-150 DEG C, insulation 2-4h, generates weak yellow liquid;
3) and then stir, in whipping process, slowly add the sulphur of 4-8%, be slowly heated to 140-160 DEG C, insulation 4-8h, generate deep yellow stick thick liquid;
4), finally, add the oil-soluble resin of 10-20%, 70-90 DEG C of mixing, stir, be i.e. obtained drilling fluid polyester lubricant;
The per-cent added in each step all refers to: relative to the quality of refining grease, the per-cent that each raw material adds.
2. the preparation method of a kind of drilling fluid polyester lubricant according to claim 1, is characterized in that: described step 2) in, add 20% Diethylene Glycol and 2% thanomin, stir, be slowly heated to 140 DEG C, insulation 3h, generates weak yellow liquid.
3. the preparation method of a kind of drilling fluid polyester lubricant according to claim 1, is characterized in that: in described step 3), adds the sulphur of 6% in whipping process, be slowly heated to 150 DEG C, insulation 6h, generates deep yellow and sticks thick liquid.
4. the preparation method of a kind of drilling fluid polyester lubricant according to claim 1, is characterized in that: in described step 4), adds the oil-soluble resin of 15%, 80 DEG C of mixing, stirs, i.e. obtained drilling fluid polyester lubricant.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107828390A (en) * | 2017-11-08 | 2018-03-23 | 常州万博金属构件厂 | A kind of preparation method of drilling fluid lubricant emulsion |
| CN110564382A (en) * | 2019-09-29 | 2019-12-13 | 中国石油集团川庆钻探工程有限公司钻井液技术服务公司 | salt-resistant lubricant for drilling fluid and preparation method thereof |
| CN110591668A (en) * | 2019-09-28 | 2019-12-20 | 中国石油集团川庆钻探工程有限公司钻井液技术服务公司 | Extreme pressure lubricant and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107828390A (en) * | 2017-11-08 | 2018-03-23 | 常州万博金属构件厂 | A kind of preparation method of drilling fluid lubricant emulsion |
| CN110591668A (en) * | 2019-09-28 | 2019-12-20 | 中国石油集团川庆钻探工程有限公司钻井液技术服务公司 | Extreme pressure lubricant and preparation method thereof |
| CN110591668B (en) * | 2019-09-28 | 2021-07-20 | 中国石油集团川庆钻探工程有限公司钻井液技术服务公司 | Extreme pressure lubricant and preparation method thereof |
| CN110564382A (en) * | 2019-09-29 | 2019-12-13 | 中国石油集团川庆钻探工程有限公司钻井液技术服务公司 | salt-resistant lubricant for drilling fluid and preparation method thereof |
| CN110564382B (en) * | 2019-09-29 | 2021-07-20 | 中国石油集团川庆钻探工程有限公司钻井液技术服务公司 | Salt-resistant lubricant for drilling fluid and preparation method thereof |
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