CN103773324B - Improve organoclay method of plastic rate in oil base drilling fluid mud - Google Patents
Improve organoclay method of plastic rate in oil base drilling fluid mud Download PDFInfo
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- CN103773324B CN103773324B CN201210412613.7A CN201210412613A CN103773324B CN 103773324 B CN103773324 B CN 103773324B CN 201210412613 A CN201210412613 A CN 201210412613A CN 103773324 B CN103773324 B CN 103773324B
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- 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
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
- C09K8/34—Organic liquids
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- 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
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
- C09K8/36—Water-in-oil emulsions
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Abstract
The present invention relates to a kind of organoclay method of plastic rate in oil base drilling fluid mud that improves, mainly solve organoclay present in prior art bad dispersibility, problem that plastic rate is low in oil base drilling fluid mud.The present invention improves organoclay method of plastic rate in oil base drilling fluid mud by employing is a kind of, including following step: a) by organoclay join in oil base drilling fluid base oil, stirring, obtain mixed system, wherein, with mixed system weight, organoclay weight content is 0.5% ~ 15%；B) account for the activator of organoclay weight 1 ~ 50%, stirring to mixed system addition, obtain oil base drilling fluid mud；Wherein, described organoclay is organic ammonium or the bentonite of organic amine modification；Described activator is at least one in the esters of polarity, alcohols, ketone or the technical scheme of at least one in its solution, preferably resolves this problem, can be used in oilfield drilling industry.
Description
Technical field
The present invention relates to a kind of improve organoclay method of plastic rate in oil base drilling fluid base oil, be mainly used in oil field
Bore in the oil base drilling fluid Technology in well-completing process.
Background technology
Oil base drilling fluid is the drilling fluid with oil as continuous phase, including water, oil, organoclay, oil-soluble macromolecular material
With all kinds of inorganic agents.Full oil base drilling fluid and Water-In-Oil can be roughly divided into against emulsion drilling fluid.The former is also called common oil base
Drilling fluid, wherein water is useless component, and water content is typically not to be exceeded 10%；The general water content of the latter in the range of 10 ~ 60%,
Water is dispersed in oil as necessary component.Oil base drilling fluid is owing to having strong rejection capability, thus is conducive to keeping wellbore stability,
Can reservoir protec-tion, particularly water-sensitive strata to greatest extent, and contamination resistance is strong, has good lubricity.Simultaneously
Oil base drilling fluid stable performance, it is easy to safeguard, Heat stability is good.Compared with water-base drilling fluid, oil base drilling fluid is more suitable for boring water
Quick property, easily cave in, high temperature deep well.
Organoclay is the most basic oleophylic colloid in oil base drilling fluid, both can improve the viscosity of mud in oil base drilling fluid
And shear force, the filter loss of oil base drilling fluid can be reduced again, indispensable additive during therefore organoclay is oil base drilling fluid.Mesh
The preparation method of front organoclay commonly uses the hydrophilic clay generation ion-exchange absorption of cationic surfactant and high degree of dispersion
Attached and make, the impact of oil base drilling fluid performance such as effect bentonitic in water-base drilling fluid, can be carried by the dosage of organoclay
The stability of the viscosity of high drilling fluid, shear force and emulsion also reduces drilling fluid filtration.National standard SY/ZQ 003-89 advises
Fixed, the performance of oil base drilling fluid organoclay is: colloidity 90%, plastic viscosity 6mPa s, apparent viscosity 7mPa s,
Yield value 1Pa s, but the organoclay of current domestic development can only meet the use requirement of diesel oil base drilling fluid mostly, especially
Its bad dispersibility in low toxicity mineral oil drilling fluid, synthetic base drilling fluid, plastic rate are low, it is impossible to meet and use requirement.And with
The development of petroleum drilling technology, the development of oil base drilling fluid with low toxicity mineral oil drilling fluid, synthetic base drilling fluid is mainly
Main, therefore improve organoclay dispersibility in this two classes oil base drilling fluid and probability of transaction has very important significance.Domestic
Scholar also expands numerous studies to this, starts with from selection and the method for modifying of organic ammonium modifying agent, has obtained a series of modification
Organoclay, but effect is the most not satisfactory, and the apparent viscosity and the yield value that obtain in white oil base drilling fluid are less, illustrate organic
It is the most poor that the thickening of soil puies forward the ability of cutting.Patent CN 101624515 invention organic clay with high jellification rate in white oil and preparation side thereof
Method, is the modified organoclay of a kind of long chain quaternary, and its 90min plastic rate in white oil can keep more than 95%, but does not has 24 little
Time plastic rate data, there is no the data in terms of rheological property improvement yet；Patent CN101942292 has invented a kind of oil base drilling fluid
By organic clay and production method thereof, the organoclay of invention has preferable plastic rate and rheological property in diesel oil, meets country
The regulation of standard, but without reference to the performance data in the mineral oil base of low polarity low toxicity, synthetic base drilling fluid；Patent
CN102093855 has invented a kind of organoclay and preparation method thereof, is also the organoclay of a kind of long chain alkyl ammonium salt modification, its
Give organoclay 1 hour plastic rate in white oil and, more than 90%, but there is no in 90min the plastic rate result after even 24 hours,
Give the data support not having the rheological property parameters such as corresponding plastic viscosity, apparent viscosity, yield value.In addition the document report having
In modified organoclay properties of product preferable, but the plastic rate problem that not mentioned organoclay is in simple base oil, but be given
System performance after adding the inorganic agent such as emulsifying agent, wetting agent, is not enough to organoclay performance is described, and in oil drilling work
Industry application also has no report.
From literature survey and oil base drilling fluid actual should be used for, the organoclay of present domestic production can not meet 24 mostly
The plastic rate technology requirement more than 90% after hour, it is impossible to play good thickening and carry and cutting and filtrate reducing effect.Therefore govern low
Poison mineral oil (white oil) base drilling fluid and the application development of synthetic base drilling fluid.
Summary of the invention
Problem to be solved by this invention is that in prior art, the organoclay of domestic production is divided in oil base drilling fluid base oil
Dissipate property difference and the low problem of mud yield, it is provided that a kind of improve the organoclay method of plastic rate, the party in oil base drilling fluid base oil
Method has organoclay good dispersion in oil base drilling fluid base oil, and the plastic rate of organoclay is high, the simple advantage of Technology.
For solving above-mentioned technical problem, technical scheme is as follows: a kind of organoclay that improves is at oil base drilling fluid mud
The method of plastic rate in slurry, including following step:
A) by organoclay join in oil base drilling fluid base oil, stirring, obtain mixed system；Wherein, with mixed system
Percentage by weight meter, in mixed system, organoclay weight content is 0.5% ~ 15%；
B) add the activator of contained organoclay weight 1 ~ 50%, stirring to mixed system, obtain oil base drilling fluid mud；
Wherein, described organoclay is organic ammonium or the bentonite of organic amine modification；Described activator is the ester of polarity
At least one at least one in class, alcohols or ketone, or esters aqueous solution, alcohol solution or ketone aqueous solution.
In technique scheme, oil base drilling fluid preferred version is full oil base drilling fluid and water in oil emulsion drilling fluid；Oil
Base drilling fluid base oil is low toxicity mineral oil, artificial oil, preferably low toxicity mineral oil, and further preferably scheme is white oil；Organoclay is preferred
Scheme is preparation organic ammonium used by oil base drilling fluid, organic amine modified alta-mud, and wherein organic ammonium preferred version is dodecane
Base trimethyl chlorine bromine ammonium, tetradecyltrimethylammonium chlorine bromine ammonium, cetyl trimethyl chlorine bromine ammonium, octadecyl three
Methyl chloride/ammonium bromide, dodecyl dimethyl benzyl chloride/ammonium bromide, myristyl benzyl dimethyl chlorine bromine ammonium, hexadecane
Base dimethyl benzyl chlorine bromine ammonium, octadecyl dimethyl benzyl chlorine bromine ammonium, double dodecyl methyl benzyl chloride/bromination
Ammonium, double tetradecylmethyl benzyl chloride/ammonium bromide, double hexadecyl methyl-benzyl chlorine bromine ammonium, double octadecyl methyl benzyl
At least one in chlorine bromine ammonium, organic amine preferred version is lauryl amine, tetradecylamine, hexadecylamine, octadecane
At least one in base amine；Activator is the esters of single polar solvent, alcohols, ketone, and the most miscible or respectively with water
The most miscible complexing agent；Esters preferred version is at least one in Allyl carbonate, butyl acetate, isoamyl acetate etc.,
Alcohols is preferably at least one in methanol, ethanol, ethylene glycol, propanol, isopropanol etc., and ketone is in acetone, butanone, pentanone etc.
At least one.The preferred scope of weight content of described organoclay is 1% ~ 10%；The preferred scope of consumption of described activator
For organoclay weight 5% ~ 30%.
Using technique scheme, the organoclay obtained is favorable dispersibility in oil base drilling fluid base oil, 90 minutes and 24
Hour colloidity all can more than 95%, even 100%, well meet to 24 hours colloiditys of organoclay more than 95% should
With requiring, and the rheological property of oil base drilling fluid system being improved, apparent viscosity, yield value etc. are all improved, plasticity
Viscosity 6mPa s, apparent viscosity 7mPa s, yield value 1Pa s, there is good thickening and carry and cut effect, well
Meet the application requirement of oil base drilling fluid.
The present invention, from the angle making organoclay surface active, introduces polar activator in oil base drilling fluid system,
By activator and the hydroxyl on organoclay surface, carbonyl, the effect of amido Deng Guanneng group, improve organoclay activity, thus carry
Its dispersibility in oil high, and then improve its colloidity, it is provided that it is used for improving organoclay and becomes in oil base drilling fluid base oil
The method of glue rate, solves the universal bad dispersibility of organoclay used in conventional art, the problem that colloidity is low.The method introduces
Activator has good activity function to organoclay, can well improve dispersibility and the colloidity of organoclay, to the present invention
Various organic amines, the organoclay of organic ammonium modification used in all have good result, and the organoclay of various performances is had one
Fixed universality effect.With organoclay is goed deep into modification technology to compared with improving its dispersibility and colloidity, the method introduces
Activator simple, price is low, source is wide, the method technical process is simple, it is easy to industrial applications, has good industrialization
Application prospect, economy is also greatly improved.
Plastic rate computing formula:
In formula, f plastic rate, %；
The white oil volume that V graduated cylinder top separates out, mL.
Rheological parameter computing formula:
AV=0.5Φ600
PV=Φ600-Ф300
YP=0.5(Ф300-PV)
In formula, Φ 600 6 speed 600 turns of readings of rotating cylinder viscometer；
Ф 300 6 speed 300 turns of readings of rotating cylinder viscometer；
AV, PV, YP are respectively apparent viscosity, plastic viscosity, yield value.
Below by specific embodiment, the invention will be further elaborated.
Detailed description of the invention
[embodiment 1]
In terms of volume parts, weigh 100 parts of 5# white oils, then under conditions of stirring, in terms of mass fraction, add 0.5
The organoclay that part Dodecyl trimethyl ammonium chloride is modified, stirring；Then the activator first occupying machine soil property amount 25% is added
Alcohol, is stirred for, and then the oil-base mud obtained is poured into the tool plug graduated cylinder of 100mL, static placement, respectively record 90min and 24h
The volume of the oil of rear layering, calculates plastic rate, and the plastic rate obtaining 90min and 24h is respectively 100% and 96.6%, is all higher than
95%。
[embodiment 2]
In terms of volume parts, weigh 350 parts of 5# white oils, then under conditions of stirring, in terms of mass fraction, add 7.5
The organoclay that part stearyl dimethyl benzyl ammonium chloride is modified, stirring；Then the activator occupying machine soil property amount 20% is added
Allyl carbonate, is stirred for, and then the oil-base mud obtained is poured into the tool plug graduated cylinder of 100mL, static placement, respectively record
After 90min and 24h, the volume of the oil of layering, calculates plastic rate, and the plastic rate obtaining 90min and 24h is respectively 100% and 100%,
It is all higher than 95%.
[embodiment 3]
In terms of volume parts, weigh 300 parts of 5# white oils, then under conditions of stirring, in terms of mass fraction, add 9 parts
The organoclay that double tetradecylmethyl Benzylphosphonium Bromide ammoniums are modified, stirring；Then the activator third occupying machine soil property amount 10% is added
Ketone, is stirred for, and then the oil-base mud obtained is poured into the tool plug graduated cylinder of 100mL, static placement, respectively record 90min and 24h
The volume of the oil of rear layering, calculates plastic rate, and the plastic rate obtaining 90min and 24h is respectively 100% and 99.5%, is all higher than
95%。
[embodiment 4]
In terms of volume parts, weigh 200 parts of 5# white oils, then under conditions of stirring, in terms of mass fraction, add 30 parts
The organoclay that octadecylamine is modified, stirring；Then add the activator ethanol occupying machine soil property amount 30%, be stirred for, then
The oil-base mud obtained is poured into the tool plug graduated cylinder of 100mL, static placement, the respectively body of the oil of layering after record 90min and 24h
Long-pending, calculate plastic rate, the plastic rate obtaining 90min and 24h is 100% and 100%, is all higher than 95%.
[embodiment 5]
In terms of volume parts, weigh 500 parts of 5# white oils, then under conditions of stirring, in terms of mass fraction, add 25 parts
The organoclay that lauryl amine is modified, stirring；Then add the activator butyl acetate occupying machine soil property amount 5%, be stirred for,
Then the oil-base mud obtained is poured into the tool plug graduated cylinder of 100mL, static placement, the respectively oil of layering after record 90min and 24h
Volume, calculate plastic rate, the plastic rate obtaining 90min and 24h is respectively 100% and 98.1%, is all higher than 95%.
[embodiment 6 ~ 11]
According to method in [embodiment 1], respectively organoclay is replaced with the organic of hexadecyltrimethylammonium chloride modification
The modified organoclay of soil, the organoclay of myristyl benzyl dimethyl ammonium chloride, double hexadecyl methyl-benzyl ammonium bromide,
The modified organoclay of the modified organoclay of tetradecyl dimethyl benzyl ammonium, double dodecyl methyl benzyl ammonium chloride, ten
The organoclay that eight alkyl trimethyl ammonium chlorides are modified, replaces with isoamyl acetate, ethylene glycol, propanol, ethylene glycol-different by activator
Propanol complexing agent, butanone-butyl acetate complexing agent, ethanol-pentanone complexing agent, obtains plastic rate such as table 1 institute of 90min and 24h
Show, be all higher than 95%.
Table 1
| Embodiment | 6 | 7 | 8 | 9 | 10 | 11 |
| 90min plastic rate (v/v%) | 100 | 99.5 | 99.8 | 100 | 100 | 99.5 |
| 24h plastic rate (v/v%) | 100 | 96.2 | 95.7 | 99.6 | 100 | 96.4 |
[embodiment 12]
Prepare mud according to the method for embodiment 4, wherein, add activator ethanol and the methanol occupying machine soil property amount 30%,
The mass percent of ethanol and methanol is 1:1, and the plastic rate obtaining 90min and 24h is 100% and 100%.
[embodiment 13]
Preparing mud according to the method for embodiment 4, wherein, add the activator occupying machine soil property amount 30%, activator is matter
Amount percentage concentration be 50% ethanol solution and mass percentage concentration be the methanol solution of 50%, the quality hundred of ethanol used and methanol
Proportion by subtraction is 1:1, and the plastic rate obtaining 90min and 24h is 100% and 100%.
[comparative example 1]
Test condition is room temperature measuring, and rheological parameter is that six speed rotating cylinder viscometer readings are computed recording.
Choosing two kinds of different organoclays of plastic rate I for tetradecyl trimethyl ammonium chloride modification, organoclay II is 16
Zephiran modified (the wherein better performances of organoclay II, the plastic rate in white oil is more than organoclay I),
Adding activator and oil-base mud system plastic rate and the rheological property being not added with activator before and after comparing high temperature ageing, result is shown in
Table 2(table activates dosage for occupying machine soil mass percent).By data in table it can be seen that before adding activator, two kinds have
Plastic rate before and after machine soil is aging is the lowest, and two kinds of systems all do not have yield value；After adding activator, two kinds of organoclay preparations
The plastic rate of oil base drilling fluid itself 90min and 24h of system be 100%, illustrate that the method can well improve organoclay really
Plastic rate；And the apparent viscosity (AV) of oil base drilling fluid system, plastic viscosity (PV) are all significantly increased after adding activator,
And all there is preferable yield value (YP), illustrate that activator is possible not only to improve the plastic rate of organoclay, moreover it is possible to well change
The rheological property of kind oil base drilling fluid system, it is possible to meet oil base drilling fluid that national standard SY/ZQ 003-89 specifies with organic
Soil colloidity 90%, plastic viscosity 6mPa s, apparent viscosity 7mPa s, the performance requirement of yield value 1Pa s.
Table 2
Note: aging condition is high temperature ageing 8 hours in 180 roller furnaces.
Claims (8)
1. improve organoclay method of plastic rate in oil base drilling fluid mud, including following step:
A) by organoclay join in oil base drilling fluid base oil, stirring, obtain mixed system；Wherein, with mixed system weight
Percentages, in mixed system, organoclay weight content is 0.5%～15%；
B) add contained organoclay weight 1～the activator of 50%, stirring to mixed system, obtain oil base drilling fluid mud；
Wherein, described organoclay is organic ammonium or the bentonite of organic amine modification；Described activator is the esters of polarity, alcohol
At least one at least one in class or ketone, or esters aqueous solution, alcohol solution or ketone aqueous solution.
Raising organoclay the most according to claim 1 method of plastic rate in oil base drilling fluid mud, it is characterised in that
Described oil base drilling fluid is full oil base drilling fluid or water in oil emulsion drilling fluid.
Raising organoclay the most according to claim 1 method of plastic rate in oil base drilling fluid mud, it is characterised in that
Described oil base drilling fluid base oil is preparation diesel oil, low toxicity mineral oil or artificial oil used by oil base drilling fluid.
Raising organoclay the most according to claim 1 method of plastic rate in oil base drilling fluid mud, it is characterised in that
The weight content of described organoclay is 1%～10%.
Raising organoclay the most according to claim 1 method of plastic rate in oil base drilling fluid mud, it is characterised in that
The consumption of described activator is the 5%～30% of organoclay weight.
Raising organoclay the most according to claim 1 method of plastic rate in oil base drilling fluid mud, it is characterised in that
The described esters in activator be ethylene dimethyl, Allyl carbonate, methyl salicylate, butyl acetate, dimethyl oxalate.,
At least one in isoamyl acetate, alcohols be in methanol, ethanol, ethylene glycol, propanol, isopropanol, butanol, isobutanol at least
One, ketone is at least one in acetone, butanone, methylisobutylketone, pentanone, methyl ethyl ketone.
Raising organoclay the most according to claim 1 method of plastic rate in oil base drilling fluid mud, it is characterised in that
Described organic ammonium is 12～behenyl chlorine bromine ammonium, 12～docosyl dimethyl benzyl chlorine bromine
Change ammonium, double 12～docosyl methyl-benzyl chlorine bromine ammonium；Described organic amine is 12～octadecyl primary amine, secondary
Amine, tertiary amine.
Raising organoclay the most according to claim 1 method of plastic rate in oil base drilling fluid mud, it is characterised in that
Described organoclay plastic rate in oil base drilling fluid mud is more than 95%, plastic viscosity 6mPa of oil base drilling fluid mud
S, apparent viscosity 7mPa s, yield value 1Pa s.
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| CN104017549B (en) * | 2014-06-05 | 2017-11-28 | 浙江丰虹新材料股份有限公司 | One kind prepares high yield value oil base drilling fluid organoclay and preparation method thereof |
| GB2545110B (en) * | 2014-09-25 | 2022-02-23 | Halliburton Energy Services Inc | Composition including a curable resin and organophilically-modified clay for subterranean oil well applications |
| CN104745169A (en) * | 2015-02-15 | 2015-07-01 | 中国石油集团西部钻探工程有限公司 | Compound emulsifying viscosity reducer for thickened oil and preparation method of compound emulsifying viscosity reducer |
| CN109181660A (en) * | 2018-08-30 | 2019-01-11 | 中交二航局第二工程有限公司 | Borehole wall-protection mud and its preparing process and site construction technology |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093855A (en) * | 2010-12-17 | 2011-06-15 | 中国石油集团长城钻探工程有限公司 | Organic soil and preparation method thereof |
| CN102295295A (en) * | 2011-06-13 | 2011-12-28 | 中国石油化工股份有限公司 | Method for preparing organoclay by using composite organic modifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093855A (en) * | 2010-12-17 | 2011-06-15 | 中国石油集团长城钻探工程有限公司 | Organic soil and preparation method thereof |
| CN102295295A (en) * | 2011-06-13 | 2011-12-28 | 中国石油化工股份有限公司 | Method for preparing organoclay by using composite organic modifier |
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