CN102766444B - Drilling fluid inhibitor and preparation method thereof - Google Patents
Drilling fluid inhibitor and preparation method thereof Download PDFInfo
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- CN102766444B CN102766444B CN201210274100.4A CN201210274100A CN102766444B CN 102766444 B CN102766444 B CN 102766444B CN 201210274100 A CN201210274100 A CN 201210274100A CN 102766444 B CN102766444 B CN 102766444B
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Abstract
The invention relates to drilling fluid inhibitor and a preparation method thereof and belongs to the technical field of treating agents for oilfield chemical drilling fluids. The preparation method includes the steps of firstly, allowing epichlorohydrin, water and catalyst to react at 60-100 DEG C for 3-8 hours according to a mole ratio of 1:(12-20):(0.02-0.12) so as to obtain 3-chloro-1, 2-propanediol solution; secondly, allowing alkyl glycoside and the 3-chloro-1, 2-propanediol to react at 80-110 DEG C for 0.5-4.0 hours according to a mole ratio of 1:(0.5-5) so as to obtain chlorohydrin glucoside solution; thirdly, adjusting pH of the chlorohydrin glucoside solution to 6-9, adding 33.3% dimethylamine solution according to a mole ratio of the chlorohydrin glucoside to the dimethylamine, 1:(0.2-2.2); and fourthly, adding crosslinking agent accounting for 2%-5% of the dimethylamine in effective content; and allowing for polymerization at 40-80 DEG C for 1-5 hours before concentration, drying and crushing to obtain the finished alkyl glucoside polyamide. Water is used as solvent in reaction. The preparation process is simple and environment-friendly, and the drilling fluid inhibitor is high in shale inhibition performance.
Description
Technical field
The present invention relates to a kind of drilling fluid inhibitor and preparation method thereof, particularly relate to a kind of alkyl glycoside base polyamine and preparation method thereof, belong to oilfield chemistry additive for drilling fluid technical field.
Background technology
At present, inhibitor conventional in drilling fluid mainly contains pitch class, inorganic salts, synthetic polymer class etc., and these inhibitor all come with some shortcomings part, as pitch class is unfavorable for environment protection; Silicate can make system rheological be difficult to regulation and control; The alkyl glycoside class developed in recent years, dosage is large, and cost is high, and rejection has much room for improvement, and effectively can not solve the drilling problem of mud shale.Amido inhibitor and other treatment agents particularly anionic drilling fluid treatment agent compatibleness are bad, limit its application.
Summary of the invention
The object of this invention is to provide a kind of drilling fluid inhibitor, its shale inhibition can be excellent.
Meanwhile, the present invention also provides a kind of preparation method of drilling fluid inhibitor, and this reaction adopts water to do solvent, the simple environmental protection of preparation technology.
A kind of drilling fluid inhibitor, its general structure is:
In formula: m=1,2,3;
n＝1,2,3,4；
a＝1,2,3；
-R is-CH
3,-C
2h
5,-CH
2cH
2oH ,-C
3h
7,-C
4h
9.
For achieving the above object, the present invention takes following preparation method:
(1) be epoxy chloropropane by mol ratio: water: catalyzer is 1:(12 ~ 20): the raw material of (0.02 ~ 0.12) is put in reactor, under temperature is 60 ~ 100 DEG C of conditions, be hydrolyzed reaction 3 ~ 8h, obtain 3-chloro-1, the aqueous solution of 2-propylene glycol is colourless transparent liquid;
(2) be 1:(0.5 ~ 5 by mol ratio) alkyl glycoside and the 3-chloro-1 for preparing of step (1), 2-propylene glycol is under temperature is 80 ~ 110 DEG C of conditions, after carrying out reaction 0.5 ~ 4.0h, obtaining the aqueous solution of chloro-hydrin(e) glucosides, is colourless or pale yellow transparent viscous liquid;
(3) it is 6 ~ 9 that the aqueous solution neutralizing agent of chloro-hydrin(e) glucosides step (2) prepared neutralizes pH value; Joined by the dimethylamine agueous solution of 33.3% bottom the chloro-hydrin(e) glucosides aqueous solution, chloro-hydrin(e) glucosides and dimethylamine mol ratio are 1:(0.2 ~ 2.2 again);
(4) add linking agent, dosage of crosslinking agent is 2% ~ 5% of dimethylamine effective content, is 40 ~ 80 DEG C in temperature, polyreaction 1 ~ 5h under normal pressure, obtains faint yellow or that safran the is transparent alkyl glycoside base polyamine aqueous solution;
(5) the alkyl glycoside base polyamine aqueous solution concentrated, dry, pulverize, obtain alkyl glycoside base polyamine product.
Described alkyl glycoside is the one in methylglycoside, ethyl glucoside, Glycol glycoside, propyl glucoside, butyl glycoside.
Described catalyzer is the one in the composite mixing acid of mineral acid, organic acid or mineral acid and organic acid.
Described mineral acid is the one in sulfuric acid, nitric acid, phosphoric acid; Organic acid is the one in tosic acid, Witco 1298 Soft Acid, thionamic acid.
Described neutralizing agent is NaOH, KOH, Na
2cO
3, one in MgO.
Described linking agent is the one in quadrol, diethylenetriamine, triethylene tetramine, tetraethylene pentamine.
The invention has the beneficial effects as follows with water to be solvent, the simple environmental protection of technological operation, the alkyl glycoside polyamine of preparation be a class rejection excellent, can good additive for drilling fluid composite with other anionic drilling fluid treatment agents, and do not generate precipitation, the alkyl glycoside base polyamine aqueous solution effectively can suppress Shale Dispersion, prevents slump in.
Embodiment
Embodiment 1
In the 500mL four-hole boiling flask that thermometer, prolong, agitator are housed, add epoxy chloropropane 0.20mol, distilled water 2.40mol and tosic acid 0.004mol.At normal pressure, under temperature 60 C, react 3h, obtain the aqueous solution of water white 3-chlorine-1,2-propylene glycol; Be down to room temperature, add methylglycoside 0.40mol, at normal pressure, at temperature 80 DEG C, react 0.5h, obtain water white chloro-hydrin(e) glucosides viscous liquid; Be down to room temperature, neutralize pH ≈ 7 with saturated aqueous sodium hydroxide solution; Then joined bottom the chloro-hydrin(e) glucosides aqueous solution by the dimethylamine 0.04mol of 33.3%, then add linking agent quadrol 0.0009mol, at temperature is 40 DEG C, reaction 3h, obtains faint yellow or that safran the is transparent methylglycoside base polyamine aqueous solution.Concentrate, dry, pulverize, namely obtain alkyl glycoside base polyamine product, i.e. shale-control agent for drilling fluid of the present invention.
Embodiment 2 ~ 7 step is identical with embodiment 1, concrete reactive material and reaction conditions as shown in table 1:
Table 1 reactive material consumption and reaction conditions table
As shown in Table 1, the present invention adopts alkyl glycoside, 3-chlorine-1,2-propylene glycol and dimethylamine under linking agent existent condition, prepare alkyl glycoside base polyamine, because in reaction process with water be solvent, and the simple and environmental protection of technological operation; Reaction conditions of the present invention is gentle, and the operating time is short; The alkyl glycoside base polyamine shale inhibition that the present invention prepares can be excellent, and be a kind of excellent shale-control agent for drilling fluid, concentration is the alkyl glycoside base polyamine aqueous solution of 1%, at 120 DEG C, shale primary recovery 83.55%, secondary returning yield 82.00%, relative recovery reaches 98.14%.
Methylglycoside base polyamine structure formula is as follows:
Ethyl glucoside base polyamine structure formula is as follows:
Butyl glycoside base polyamine structure formula is as follows:
In formula: m=1,2,3;
n＝1,2,3,4
a＝1,2,3；。
Claims (7)
1. a drilling fluid inhibitor, it is characterized in that described inhibitor is alkyl glycoside base polyamine, its general structure is:
In formula: m=1,2,3;
n＝1,2,3,4；
a＝1,2,3；
-R is-CH
3,-C
2h
5,-CH
2cH
2oH ,-C
3h
7,-C
4h
9.
2. a preparation method for drilling fluid inhibitor, is characterized in that comprising the following steps:
(1) be epoxy chloropropane by mol ratio: water: catalyzer is 1:(12 ~ 20): the raw material of (0.02 ~ 0.12) is put in reactor, under temperature is 60 ~ 100 DEG C of conditions, be hydrolyzed reaction 3 ~ 8h, obtains the aqueous solution of 3-chlorine-1,2-propylene glycol;
(2) be 1:(0.5 ~ 5 by mol ratio) alkyl glycoside and the 3-chlorine-1,2-propylene glycol prepared of step (1) under temperature is 80 ~ 110 DEG C of conditions, after carrying out reaction 0.5 ~ 4.0h, obtain the aqueous solution of chloro-hydrin(e) glucosides;
(3) it is 6 ~ 9 that the aqueous solution neutralizing agent of chloro-hydrin(e) glucosides above-mentioned steps (2) prepared neutralizes pH value; Joined by the dimethylamine agueous solution of 33.3% bottom the chloro-hydrin(e) glucosides aqueous solution, chloro-hydrin(e) glucosides and dimethylamine mol ratio are 1:(0.2 ~ 2.2 again);
(4) add linking agent, dosage of crosslinking agent is 2% ~ 5% of dimethylamine effective content, is 40 ~ 80 DEG C in temperature, polyreaction 1 ~ 5h under normal pressure, obtains the alkyl glycoside base polyamine aqueous solution;
(5) alkyl glycoside base polyamine aqueous solution step (4) prepared is concentrated, dry, pulverize, and obtains alkyl glycoside base polyamine product.
3. the preparation method of a kind of drilling fluid inhibitor as claimed in claim 2, is characterized in that described alkyl glycoside is the one in methylglycoside, ethyl glucoside, propyl glucoside, butyl glycoside.
4. the preparation method of a kind of drilling fluid inhibitor as claimed in claim 2, is characterized in that described catalyzer is the one in the composite mixing acid of mineral acid, organic acid or mineral acid and organic acid.
5. the preparation method of a kind of drilling fluid inhibitor as claimed in claim 4, is characterized in that described mineral acid is the one in sulfuric acid, nitric acid, phosphoric acid; Described organic acid is the one in tosic acid, Witco 1298 Soft Acid, thionamic acid.
6. the preparation method of a kind of drilling fluid inhibitor as claimed in claim 2, is characterized in that described neutralizing agent is NaOH, KOH, Na
2cO
3, one in MgO.
7. the preparation method of a kind of drilling fluid inhibitor as claimed in claim 2, is characterized in that described linking agent is the one in quadrol, diethylenetriamine, triethylene tetramine and tetraethylene pentamine.
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|---|---|---|---|
| CN201210274100.4A CN102766444B (en) | 2012-08-02 | 2012-08-02 | Drilling fluid inhibitor and preparation method thereof |
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|---|---|---|---|
| CN201210274100.4A CN102766444B (en) | 2012-08-02 | 2012-08-02 | Drilling fluid inhibitor and preparation method thereof |
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| CN102766444A CN102766444A (en) | 2012-11-07 |
| CN102766444B true CN102766444B (en) | 2015-04-29 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103360213B (en) * | 2013-07-30 | 2014-11-26 | 潍坊沃尔特化学有限公司 | Chloropropanediol purifying apparatus and production method thereof |
| CN104448100A (en) * | 2014-11-24 | 2015-03-25 | 卫辉市化工有限公司 | Preparation method of polymer inhibitor for drilling fluid |
| CN104830290B (en) * | 2015-04-30 | 2017-08-01 | 中国石油集团渤海钻探工程有限公司 | The preparation method of drilling fluid low molecule amount polyamine shale control agent |
| CN106432376B (en) * | 2015-08-10 | 2019-02-22 | 中石化石油工程技术服务有限公司 | A kind of aminoalkyl glucosides and its preparation method and application |
| CN106432378B (en) * | 2015-08-10 | 2020-04-24 | 中石化石油工程技术服务有限公司 | Polyaminoalkyl glucoside and preparation method and application thereof |
| CN105838342A (en) * | 2016-04-24 | 2016-08-10 | 辽宁石油化工大学 | High-density cationic saccharide inhibitor for drilling fluids and preparation method thereof |
| CN106046068B (en) * | 2016-06-17 | 2019-02-01 | 长江大学 | The preparation method of modified poly- polysaccharide lubricating collapse-resisting inhibitor |
| CN106336467B (en) * | 2016-08-25 | 2017-12-05 | 中国石油大学(北京) | Modification of chitosan and preparation method thereof and application and drilling fluid and its application as shale control agent |
| CN109694697A (en) * | 2017-10-23 | 2019-04-30 | 中石化石油工程技术服务有限公司 | A kind of drilling fluid polyamine shale inhibitor and preparation method thereof and drilling fluid |
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| EP1379674B1 (en) * | 2001-04-17 | 2011-12-21 | Danisco US Inc. | Method to bind enzyme to carrier using cationic copolymers and product produced thereby |
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