CN110527500A - White oil base drilling fluid method for preparing organobentonite - Google Patents
White oil base drilling fluid method for preparing organobentonite Download PDFInfo
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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
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
- C09K8/34—Organic liquids
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Abstract
The present invention relates to a kind of white oil base drilling fluid method for preparing organobentonite.Soluble in water, the high-speed stirred by sodium bentonite siccative forms suspension system a；Miscible in ethyl alcohol, the stirring and dissolving by organic modifiers forms uniform system b；Auxiliary agent A is soluble in water, and stirring and dissolving, heating continuously adds auxiliary agent B, and water is added and forms uniform system c, under stirring, system b is added in suspension system a, adjusts pH value, reacts 1 ~ 2 hour, forms uniform system d；Under stirring, system c is added in suspension system d, is reacted 0.5 ~ 1 hour；Product is cooled to room temperature, and washes away ion extra in product, and filtering, solid product dry, pulverize sieving and obtain product.The product of the method for the present invention preparation, has good rheological property and compatibility in system.
Description
Technical field
The invention belongs to technical field of petrochemical industry, are related to drilling fluid organoclay technical field, and in particular to Yi Zhongbai
Oil base drilling fluid method for preparing organobentonite.
Background technique
With the development of drilling technology and optimizing for environmentally friendly laws and regulations, water-base drilling fluid is not able to satisfy underground gradually
The demand of complex geological condition, oil base drilling fluid cannot be met environmental requirements well, and application and popularization are by a certain extent
Limitation.Oil base drilling fluid is also the main drilling fluid system of shale oil and gas development, and the common oil-base mud in China is mainly bavin
The shortcomings that oil systems, arene content is high, exists and is difficult to recycle, and pollutes environment.With the enhancing of people's environmental consciousness, traditional oil
Base drilling fluid by being increasingly stringenter using that will be limited, and white oil base drilling fluid is since its feature of environmental protection is with before good development
Scape.For white oil base drilling fluid as a kind of New well drilling liquid system with environmental protection characteristic, it had both remained the property of oil base drilling fluid
Energy feature, and solve the contradiction between oil base drilling fluid and environmental protection, therefore become ocean bad ground and other land
Essential drilling fluid system in environmentally sensitive areas drilling process.Foreign countries are white from exploitation at the beginning of the nineties first generation that comes into operation
Since oil base drilling fluid, because of its exclusive performance and the small advantage of environmental pollution, rapid development has been achieved.In recent years, with
The more second generation white oil base drilling fluid of excellent properties comes into operation, and white oil base drilling fluid system is gradually improved, external scene
Using having reached considerable scale.
White oil base drilling fluid is oleophylic colloid most basic in white oil base drilling fluid with organobentonite, and drilling fluid can be improved
Viscosity and shear force, reduce the filter loss of drilling fluid, bentonite performance directly affect white oil base drilling fluid exploitation and
Using.The exploitation of domestic dialogue oil base drilling fluid organoclay is at the early-stage, without correlation special product.Do not have currently on the market
The mature organic swelling product of white oil base drilling fluid, existing organic native produce are mainly used in traditional oil base drilling fluid, In
The disadvantages such as it is poor that there are rheological properties in white oil base drilling fluid system, and pulping performance is low, field application is relatively difficult, therefore to white oil
Base drilling fluid is studied with the preparation of organic swelling.
Summary of the invention
The purpose of the present invention is to propose to a kind of white oil base drilling fluid method for preparing organobentonite.
Main technical schemes of the invention: white oil base drilling fluid method for preparing organobentonite, it is characterized in that including
Following steps:
(1) sodium bentonite siccative is soluble in water, high-speed stirred, forming mass concentration is 5%-7% suspension system a；
(2) organic modifiers are miscible in ethyl alcohol, stirring and dissolving, forming mass concentration is 10%-15% system b；
(3) by auxiliary agent A it is soluble in water, stirring and dissolving is heated to 75-85 DEG C, the auxiliary agent B continuously added, reaction 8-12 point
Clock forms uniform system c；
(4) under stirring, system b is added in suspension system a, and regulation system pH value is 7~8, at 70~90 DEG C
Reaction 1 ~ 2 hour, forms uniform system d；
(5) under stirring, system c is added in suspension system d, is reacted 0.5 ~ 1 hour at 70~90 DEG C, sodium in system d
Base bentonite/organic modifiers/auxiliary agent A+B mass ratio is 10:4:1；
Product obtained in step (5) is cooled to 25 DEG C, washes away ion extra in product, is filtered, it then will be resulting solid
Body product dry, pulverize sieving under 60~80 DEG C of vacuum environments, obtain organobentonite product.
Generally, the organic modifiers are double hydrogenated-tallow group alkyl dimethyl ammonium chlorides；Additional amount is Na-bentonite soil property
The 35%-40% of amount.
The auxiliary agent A is polyoxyethylene carboxylate.
The polyoxyethylene carboxylate is RCOO (CH2CH2O)nH(n=9,12,20).
The auxiliary agent B is carboxylic acid polyalcohol (C6H7O2(OH)2CH2COONa)n。
The mass concentration of the auxiliary agent A is 8-10%, and the mass concentration of auxiliary agent B is 8-10%.
The additional amount of the auxiliary agent A is the 5%-10% of sodium bentonite quality, and auxiliary agent B additional amount is sodium bentonite quality
3%-5%.
In the step (3), by auxiliary agent A it is soluble in water, stirring and dissolving is heated to 80 DEG C, the auxiliary agent B continuously added,
Reaction 10 minutes, forms uniform system c.
Bentonite montmorillonite raw ore used by the sodium bentonite, interlayer negative electrical charge are brilliant in 0.3-0.45/ unit
Between born of the same parents, be conducive to the interlamellar spacing for improving organoclay.
The sodium bentonite is pre-processed using cyclonic separation equipment, by 5 grades of purification Na-bentonites, sodium base obtained
Montmorillonite weight percentage >=97% in bentonite, expansion capacity >=98ml/g.
The organobentonite of the method for the present invention preparation has good rheological property in white oil base drilling fluid system.Using
The drilling fluid of organoclay configuration prepared by the present invention, anti-shear performance is excellent in use process at the scene, in continuous high temperature (160
DEG C) under run 7 days or more, organoclay loss late≤10% is fully met needed for field application.
Specific embodiment
The contents of the present invention are further illustrated below with reference to embodiment.
Embodiment 1
80 parts of sodium base soil are distributed in water, high-speed stirred, obtaining concentration is 5% stable suspension, adjusts the pH value of suspension
It is spare to 7 ~ 8；32 parts of double hydrogenated-tallow group alkyl dimethyl ammonium chlorides are dissolved in ethyl alcohol, concentration 12% is stirred evenly, is allowed into
For the solution for standby of clear.By 6 parts of polyoxyethylene carboxylate RCOO (CH2CH2O)nH(n=9) it is dissolved in the water, it stirs
Uniformly, 80 DEG C are heated to, 4 parts of carboxylic acid polyalcohols are continuously added, reacts 10 minutes, makes the solution for standby of clear,
Concentration is 8%.Under high-speed stirred state, double hydrogenated-tallow group dimethylammonium chloride ammonium salt solutions are added rapidly in suspension, 75
DEG C when react 1.5 hours, continuously add prepared auxiliary agent, be stirred to react 1 hour.Product is cooled to room temperature, and uses deionized water
It washs, filters repeatedly, the organobentonite of preparation is dried in vacuo, crushed and crossed 200 meshes at 70 DEG C to get organic bentonite is arrived
Moisten native produce.
Embodiment 2
60 parts of sodium base soil is distributed in 800 parts of deionized waters, high-speed stirred, obtains stable suspension, adjusts suspension
PH value to 7 ~ 8, it is spare；22 parts of double hydrogenated-tallow group alkyl dimethyl ammonium chlorides are dissolved in 200 parts of ethyl alcohol, stirs evenly, makes
The solution for standby as clear.By 11 parts of polyoxyethylene carboxylate RCOO (CH2CH2O)nH(n=12) it is dissolved in 100
It in part deionized water, stirs evenly, is heated to 80 DEG C, continuously add 14 parts of carboxylic acid polyalcohols, react 10 minutes, make clear
Clear bright solution for standby.Under high-speed stirred state, double hydrogenated-tallow group dimethylammonium chloride ammonium salt solutions are added rapidly to suspend
In liquid, is reacted 1.6 hours at 70 DEG C, continuously add prepared auxiliary agent, be stirred to react 0.9 hour.Product is cooled to room temperature,
It is washed, is filtered repeatedly with deionized water, the organobentonite of preparation in 75 DEG C of vacuum drying, crushing and is crossed into 200 meshes, i.e.,
Obtain organobentonite product.
Embodiment 3
65 parts of sodium base soil is distributed in 1000 parts of deionized waters, high-speed stirred, obtains stable suspension, adjusts suspension
PH value to 7 ~ 8, it is spare；25 parts of double hydrogenated-tallow group alkyl dimethyl ammonium chlorides are dissolved in 200 parts of ethyl alcohol, stirs evenly, makes
The solution for standby as clear.By 11 parts of polyoxyethylene carboxylate RCOO (CH2CH2O)nH(n=20) it is dissolved in 100
It in part deionized water, stirs evenly, is heated to 80 DEG C, continuously add 10 parts of carboxylic acid polyalcohols, react 10 minutes, make clear
Clear bright solution for standby.Under high-speed stirred state, double hydrogenated-tallow group dimethylammonium chloride ammonium salt solutions are added rapidly to suspend
In liquid, is reacted 1.5 hours at 70 DEG C, continuously add prepared auxiliary agent, be stirred to react 1 hour.Product is cooled to room temperature, and is used
Deionized water is washed repeatedly, filtering, by the organobentonite of preparation 75 DEG C vacuum drying, crush and cross 200 meshes to get
To organobentonite product.
Embodiment 4
60 parts of sodium base soil is distributed in 800 parts of deionized waters, high-speed stirred, obtains stable suspension, adjusts suspension
PH value to 7 ~ 8, it is spare；22 parts of double hydrogenated-tallow group alkyl dimethyl ammonium chlorides are dissolved in 200 parts of ethyl alcohol, stirs evenly, makes
The solution for standby as clear.By 11 parts of polyoxyethylene carboxylate RCOO (CH2CH2O)nH(n=9) it is dissolved in 100 parts
It in deionized water, stirs evenly, is heated to 80 DEG C, continuously add 14 parts of carboxylic acid polyalcohols, react 10 minutes, make clarification
Transparent solution for standby.Under high-speed stirred state, double hydrogenated-tallow group dimethylammonium chloride ammonium salt solutions are added rapidly to suspension
In, it is reacted 1.5 hours at 70 DEG C, continuously adds prepared auxiliary agent, be stirred to react 1 hour.Product is cooled to room temperature, and is spent
Ionized water washs repeatedly, filtering, is dried in vacuo, crushes and crosses 200 meshes at 75 DEG C by the organobentonite of preparation to get arriving
Organobentonite product.
Embodiment 5
70 parts of sodium base soil is distributed in 1500 parts of deionized waters, high-speed stirred, obtains stable suspension, adjusts suspension
PH value to 7 ~ 8, it is spare；26 parts of double hydrogenated-tallow group alkyl dimethyl ammonium chlorides are dissolved in 200 parts of ethyl alcohol, stirs evenly, makes
The solution for standby as clear.By 13 parts of polyoxyethylene carboxylate RCOO (CH2CH2O)nH(n=12) it is dissolved in 100
It in part deionized water, stirs evenly, is heated to 80 DEG C, continuously add 7 parts of carboxylic acid polyalcohols, react 10 minutes, make clear
Clear bright solution for standby.Under high-speed stirred state, double hydrogenated-tallow group dimethylammonium chloride ammonium salt solutions are added rapidly to suspend
In liquid, is reacted 1.5 hours at 70 DEG C, continuously add prepared auxiliary agent, be stirred to react 1 hour.Product is cooled to room temperature, and is used
Deionized water is washed repeatedly, filtering, by the organobentonite of preparation 75 DEG C vacuum drying, crush and cross 200 meshes to get
To organobentonite product.
Embodiment 6
85 parts of sodium base soil is distributed in 800 parts of deionized waters, high-speed stirred, obtains stable suspension, adjusts suspension
PH value to 7 ~ 8, it is spare；28 parts of double hydrogenated-tallow group alkyl dimethyl ammonium chlorides are dissolved in 200 parts of ethyl alcohol, stirs evenly, makes
The solution for standby as clear.By 10 parts of polyoxyethylene carboxylate RCOO (CH2CH2O)nH(n=12) it is dissolved in 100
It in part deionized water, stirs evenly, is heated to 80 DEG C, continuously add 6 parts of carboxylic acid polyalcohols, react 10 minutes, make clear
Clear bright solution for standby.Under high-speed stirred state, double hydrogenated-tallow group dimethylammonium chloride ammonium salt solutions are added rapidly to suspend
In liquid, is reacted 1.5 hours at 70 DEG C, continuously add prepared auxiliary agent, be stirred to react 1 hour.Product is cooled to room temperature, and is used
Deionized water is washed repeatedly, filtering, by the organobentonite of preparation 75 DEG C vacuum drying, crush and cross 200 meshes to get
To organobentonite product.
Embodiment 7
65 parts of sodium base soil is distributed in 800 parts of deionized waters, high-speed stirred, obtains stable suspension, adjusts suspension
PH value to 7 ~ 8, it is spare；25 parts of double hydrogenated-tallow group alkyl dimethyl ammonium chlorides are dissolved in 200 parts of ethyl alcohol, stirs evenly, makes
The solution for standby as clear.By 12 parts of polyoxyethylene carboxylate RCOO (CH2CH2O)nH(n=20) it is dissolved in 100
It in part deionized water, stirs evenly, is heated to 80 DEG C, continuously add 10 parts of carboxylic acid polyalcohols, react 10 minutes, make clear
Clear bright solution for standby.Under high-speed stirred state, double hydrogenated-tallow group dimethylammonium chloride ammonium salt solutions are added rapidly to suspend
In liquid, is reacted 2 hours at 70 DEG C, continuously add prepared auxiliary agent, be stirred to react 0.5 hour.Product is cooled to room temperature, and is used
Deionized water is washed repeatedly, filtering, by the organobentonite of preparation 75 DEG C vacuum drying, crush and cross 200 meshes to get
To organobentonite product.
Detection can be carried out in white oil neutrality to gained organoclay, as the result is shown compare common organoclay, invention it is organic
Soil nature can be obviously improved in the performance in white oil, the drilling fluid configured using the organoclay, anti-shearing in use process at the scene
Function admirable, runs 7 days or more under continuous high temperature (160 DEG C), and organoclay loss late≤10% fully meets field application institute
It needs.
The measurement result of organoclay performance test
Claims (10)
1. a kind of white oil base drilling fluid method for preparing organobentonite, it is characterized in that the following steps are included:
(1) sodium bentonite siccative is soluble in water, high-speed stirred, forming mass concentration is 5%-7% suspension system a；
(2) organic modifiers are miscible in ethyl alcohol, stirring and dissolving, forming mass concentration is 10%-15% system b；
(3) by auxiliary agent A it is soluble in water, stirring and dissolving is heated to 75-85 DEG C, the auxiliary agent B continuously added, reaction 8-12 point
Clock forms uniform system c；
(4) under stirring, system b is added in suspension system a, and regulation system pH value is 7~8, at 70~90 DEG C
Reaction 1 ~ 2 hour, forms uniform system d；
(5) under stirring, system c is added in suspension system d, is reacted 0.5 ~ 1 hour at 70~90 DEG C, sodium in system d
Base bentonite/organic modifiers/auxiliary agent A+B mass ratio is 10:4:1；
Product obtained in step (5) is cooled to 25 DEG C, washes away ion extra in product, is filtered, it then will be resulting solid
Body product dry, pulverize sieving under 60~80 DEG C of vacuum environments, obtain organobentonite product.
2. preparation method as described in claim 1, it is characterized in that the organic modifiers are double hydrogenated-tallow group dimethyl chlorides
Change ammonium；Additional amount is the 35%-40% of sodium bentonite quality.
3. preparation method as described in claim 1, it is characterized in that the auxiliary agent A is polyoxyethylene carboxylate.
4. preparation method as claimed in claim 3, it is characterized in that the polyoxyethylene carboxylate is RCOO (CH2CH2O)nH
(n=9,12,20).
5. preparation method as described in claim 1, it is characterized in that the auxiliary agent B is carboxylic acid polyalcohol (C6H7O2(OH)2CH2COONa)n。
6. preparation method as described in claim 1, it is characterized in that the mass concentration of the auxiliary agent A is 8-10%, the matter of auxiliary agent B
Amount concentration is 8-10%.
7. preparation method as described in claim 1, it is characterized in that the additional amount of the auxiliary agent A is sodium bentonite quality
5%-10%, auxiliary agent B additional amount are the 3%-5% of sodium bentonite quality.
8. preparation method as described in claim 1, it is characterised in that in step (3), by auxiliary agent A it is soluble in water, stir it is molten
Solution, is heated to 80 DEG C, the auxiliary agent B continuously added, reacts 10 minutes, forms uniform system c.
9. preparation method as described in claim 1, it is characterised in that bentonite montmorillonite raw ore used by sodium bentonite,
Its interlayer negative electrical charge is between 0.3-0.45/ unit cell.
10. preparation method as described in claim 1, it is characterised in that the sodium bentonite is carried out using cyclonic separation equipment
Pretreatment, by 5 grades of purification Na-bentonites, montmorillonite weight percentage >=97% in sodium bentonite obtained, expansion capacity >=
98ml/g。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115536035A (en) * | 2021-06-29 | 2022-12-30 | 中石化南京化工研究院有限公司 | Preparation method of temperature-resistant organic bentonite, temperature-resistant organic bentonite and application thereof |
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Application publication date: 20191203 |