CN105647501B - Viscosity depressant for drilling fluid and preparation method thereof - Google Patents
Viscosity depressant for drilling fluid and preparation method thereof Download PDFInfo
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- CN105647501B CN105647501B CN201610112017.5A CN201610112017A CN105647501B CN 105647501 B CN105647501 B CN 105647501B CN 201610112017 A CN201610112017 A CN 201610112017A CN 105647501 B CN105647501 B CN 105647501B
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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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
Abstract
The present invention relates to viscosity depressant for drilling fluid and preparation method thereof.Potassium hydroxide, sodium methyl silicate, fluosilicic are done agent to mix in deionized water, obtain the first solution；Acrylic acid addition is obtained into the second solution in containing surfactant solution, second part of solution is added dropwise in first part of solution, reaction temperature is controlled at 35 50 DEG C, and pH value is between 79；After being added dropwise, 0.8 1.2h is stirred at 55 65 DEG C, then is cooled to 45 55 DEG C, 1.5 2.5h are stirred, up to thinner product.Preparation method of the present invention is simple, and process is easy to control, and reaction speed is fast, and obtained thinner stability is good, storage does not precipitate for a long time, and product has Viscosity-reducing well, is readily dissolved in drilling fluid, and it is strong to suppress dispersiveness, has certain suppression hydration.
Description
Technical field
The present invention relates to sodium methyl silicate viscosity reduction system, environmental type is pollution-free, more particularly to a kind of drilling fluid drop
Stick and preparation method thereof.
Background technology
Thinner is indispensable additive for drilling fluid in drilling process, it plays adjusting drilling fluid rheology non-
Often important effect.Although solid control equipment can effectively remove the various solid phases in drilling fluid, rise and adjust drilling fluid rheology, reduce
The effect of thinner usage amount, but present live solid control equipment is of non-ideal use, and the effect of thinner is also just more important.
Before and after 1991, Zhang Chunguang etc. conducts in-depth research the mechanism of action of thinner, and thinner is ground in this period
Study carefully and be concentrated mainly in the modification to natural materials such as lignin, in recent years mainly Study Polymer Melts thinner, especially with
Amphoteric ion polymer thinner of the maleic anhydride for the polymer viscosity reducer of raw material and with cation group.
Common FCLS, SMC, SMK, SMT, this kind of thinner mainly act on clay particle, are by clay particle
Adsorbed on edge, increase the hydrating capacity of clay particle, break the side of clay particle, while and while, face combine, so as to break in mud
Clay is formed in slurry structure and obtain viscosity reducing effect, cannot substantially eliminate between polymer and between polymer and clay
What interaction produced puies forward viscous effect.
The content of the invention
In order to overcome between polymer and between polymer and clay interaction produce put forward viscous effect, the present invention provides
A kind of preparation method of thinner, its thinner prepared can be added in drilling fluid, do not influence the use of other medicaments, and energy
It is enough to play the role of viscosity reduction and anti-leak-off well.
The present invention solves the scheme that its technical problem uses：A kind of viscosity depressant for drilling fluid, based on raw material weight number,
First part of solution is blended in 2 to 10 parts of deionized waters and is formed by 1 to 3 part of potassium hydroxide, 1 to 10 part of sodium methyl silicate；
Second part of solution is dissolved in the aqueous surfactant solution containing 1 to 10 part by 2 to 10 parts of acrylic acid to be formed.
The surfactant is fatty acid methyl ester and the condensation product FMEE and fatty alcohol polyoxyethylene ether JFC of ethylene oxide
It is 1 ~ 2 in mass ratio:3 ~ 4 are mixed to get.
A kind of preparation method of viscosity depressant for drilling fluid, carries out according to the following steps：
1) first part of solution is added drop-wise in second part of solution, reaction temperature control at 35-50 DEG C, pH value 7-9 it
Between；
2）After being added dropwise, 0.8-1.2h is stirred under conditions of 55-65 DEG C, then is cooled to 45-55 DEG C, is stirred
1.5-2.5h, up to thinner product.
The preparation process of first part of solution is：Deionized water, potassium hydroxide are first placed into, is stirred at 45-50 DEG C
After uniformly, add sodium methyl silicate stirring and be made.
The surfactant is fatty acid methyl ester and the condensation product FMEE and fatty alcohol polyoxyethylene ether JFC of ethylene oxide
It is 1 ~ 2 in mass ratio:3 ~ 4 are mixed to get.
Described 1）PH value is adjusted with alkaline conditioner in step, the alkaline conditioner is NH3·H2O and NH4HCO3It is mixed
Compound.
The alkaline conditioner is by NH3·H2O and NH4HCO3It is 7-8 in molar ratio:4-6 mixing compositions.
First solution filters after being made by the qualitative Medium speed filter paper of Φ 9cm, is then added drop-wise to described second again
In solution.
Described 2）1h first is stirred in 60 DEG C of constant temperature in step, then is cooled to 50 DEG C, stirs 2h, reaction is made.
The present invention is dispersed in aqueous by FMEE, JFC.In preparation process, FMEE and JFC play reduction table
The effect of face tension force and interfacial tension, does not participate in reaction, aids in thinner, reduces apparent viscosity.Utilize sodium methyl silicate and third
Olefin(e) acid reacts in alkaline conditions, forms ionic species and obtains thinner.
Embodiment
Each raw material in following embodiments is by mass percentage.
Example 1
10% deionized water is first added in three-necked flask, after 2% KOH is stirred evenly at 45-50 DEG C, add 1%
Sodium methyl silicate stirring after five minutes, be added drop-wise in 2% acrylic acid and the aqueous solution containing 5% surfactant, then seal up
Three-necked flask, during which rear 60 DEG C of stirring 1h of constant temperature are added dropwise between 7-9 in constantly regulate pH value, then cool to 50 DEG C,
2h is stirred, up to thinner product.
Specific ratio is as follows（Measured by 100g thinners）：KOH：2g；Sodium methyl silicate：1g；Acrylic acid：2g；Live on surface
Property agent：5g；Water：90g.
Example 2
8% deionized water is first added in three-necked flask, after 3% KOH is stirred evenly at 45 DEG C, add 1% first
Base sodium metasilicate stirs after five minutes, then is added drop-wise in 2% acrylic acid and the aqueous solution containing 5% surfactant, then seals up three
Mouth flask, during which rear 60 DEG C of stirring 1h of constant temperature are added dropwise between 7-9 in constantly regulate pH value, then cool to 50 DEG C, stir
2h is mixed, up to thinner product.
Specific ratio is as follows（Measured by 100g thinners）：KOH：3g；Sodium methyl silicate：1g；Acrylic acid：2g；Live on surface
Property agent：5g；Water：89g.
Example 3
7% deionized water is first added in three-necked flask, after 3% KOH is stirred evenly at 45 DEG C, add 10%
Sodium methyl silicate stirs after five minutes, then is added drop-wise in 2% acrylic acid and the aqueous solution containing 5% surfactant, then seals up
Three-necked flask, during which rear 55 DEG C of stirring 1h of constant temperature are added dropwise between 7-9 in constantly regulate pH value, then cool to 45 DEG C,
2h is stirred, up to thinner product.
Specific ratio is as follows（Measured by 100g thinners）：KOH：3g；Sodium methyl silicate：10g；Acrylic acid：2g；Live on surface
Property agent：5g；Water：80g.
Example 4
8% deionized water is first added in three-necked flask, after 3% KOH is stirred evenly at 45 DEG C, add 5% first
Base sodium metasilicate stirs after five minutes, then is added drop-wise in 10% acrylic acid and the aqueous solution containing 10% surfactant, then seals up
Three-necked flask, during which rear 65 DEG C of stirring 1h of constant temperature are added dropwise between 7-9 in constantly regulate pH value, then cool to 55 DEG C,
2h is stirred, up to thinner product.
Specific ratio is as follows（Measured by 100g thinners）：KOH：3g；Sodium methyl silicate：5g；Acrylic acid：10g；Live on surface
Property agent：10g；Water：72g.
Specific detection data：
It is the thinner prepared with method provided by the invention below, adds base slurry, performance detection by mass percentage.
Example 1
Prepared with reference to base slurry：By water：Sodium soil=100:8.5 ratio prepares base slurry, high-speed stirred 20min, sealed maintenance
24h.Density is improved to 1.5g/cm3 with iron oxide miberal powder, it is low to stir 4h.Measure it with six fast rotary viscosities immediately is in rotating speed
The reading Φ 100 of 100r/min.
Take the base after low stir to starch 400ml, the thinner of the present invention is added by 1% dosage, height stirs 20min, low to stir 30min simultaneously
90 DEG C are heated to, then measures the reading Φ 100 that its rotating speed is 100r/min with six fast rotary viscosities1。
Its viscosity break ratio is calculated as follows：
Viscosity break ratio=（Φ100-Φ1001）/Φ100*100%
The detection method that thinner prepared by method provided by the invention is provided using example 1, viscosity break ratio is after detection
90%。
Example 2
Prepared with reference to base slurry：By water：Natrium carbonicum calcinatum：Live soil=100:0.3:10 ratio prepares base slurry, high-speed stirred
20min, in 25 ± 3 DEG C of sealed maintenance 24h.Prepared base slurry 400ml is taken, height stirs 5min, it is measured with six fast rotary viscosities
Rotating speed is the reading Φ 100 of 100r/min.
Prepared base slurry 400ml is taken, the thinner of the present invention is added by 0.5% dosage, stirs 10min, it is then high to stir
5min, the reading Φ 100 that its rotating speed is 100r/min is measured with six fast rotary viscosities2。
Its viscosity break ratio is calculated as follows：
Viscosity break ratio=（Φ100-Φ1002）/Φ100*100%
The detection method that thinner prepared by method provided by the invention is provided using example 2, viscosity break ratio is after detection
95%。
Example 3
Prepared with reference to base slurry：By water：Natrium carbonicum calcinatum：Sodium soil=100:0.18:6 ratio prepares base slurry, high-speed stirred
20min, in the 80A51 of 25 ± 3 DEG C of sealed maintenance 24h, while stirring addition 0.1%, stirs 30min, is supported in 25 ± 3 DEG C of sealings
Protect 24h.Prepared base slurry 400ml is taken, height stirs 5min, and the reading Φ that its rotating speed is 100r/min is measured with six fast rotary viscosities
100。
Prepared base slurry 400ml is taken, the thinner of the present invention is added by 0.1% dosage, 10min is stirred, at 25 ± 3 DEG C
Sealed maintenance 2h, it is then high to stir 5min, measure the reading Φ 100 that its rotating speed is 100r/min with six fast rotary viscosities3。
Its viscosity break ratio is calculated as follows：
Viscosity break ratio=（Φ100-Φ1003）/Φ100*100%
The detection method that thinner prepared by method provided by the invention is provided using example 3, viscosity break ratio is after detection
85%。
Claims (9)
1. a kind of viscosity depressant for drilling fluid, it is characterised in that based on raw material weight number, first part of solution is by 1 to 3 part of hydroxide
Potassium, 1 to 10 part of sodium methyl silicate are blended in 2 to 10 parts of deionized waters and form；
Second part of solution is dissolved in the aqueous surfactant solution containing 1 to 10 part by 2 to 10 parts of acrylic acid to be formed.
2. a kind of viscosity depressant for drilling fluid according to claim 1, it is characterised in that the surfactant is aliphatic acid
The condensation product FMEE and fatty alcohol polyoxyethylene ether JFC of methyl esters and ethylene oxide are 1 ~ 2 in mass ratio:3 ~ 4 are mixed to get.
3. a kind of preparation method of viscosity depressant for drilling fluid, it is characterised in that carry out according to the following steps：
1) first part of solution is added drop-wise in second part of solution, reaction temperature is controlled at 35-50 DEG C, and pH value is between 7-9；
2）After being added dropwise, 0.8-1.2h is stirred under conditions of 55-65 DEG C, then is cooled to 45-55 DEG C, stirs 1.5-
2.5h, up to thinner product；
Wherein first part of solution is blended in group in 2 to 10 parts of deionized waters by 1 to 3 part of potassium hydroxide, 1 to 10 part of sodium methyl silicate
Into；
Second part of solution is dissolved in the aqueous surfactant solution containing 1 to 10 part by 2 to 10 parts of acrylic acid to be formed.
4. the preparation method of a kind of drilling fluid binding agent according to claim 3, it is characterised in that described first part molten
The preparation process of liquid is：Deionized water, potassium hydroxide are first placed into, after being stirred evenly at 45-50 DEG C, adds methane-siliconic acid
Sodium stirring is made.
A kind of 5. preparation method of viscosity depressant for drilling fluid according to claim 3, it is characterised in that the surface-active
Agent is that the condensation product FMEE and fatty alcohol polyoxyethylene ether JFC of fatty acid methyl ester and ethylene oxide are 1 ~ 2 in mass ratio:3 ~ 4 is mixed
Conjunction obtains.
6. the preparation method of a kind of viscosity depressant for drilling fluid according to claim 3, it is characterised in that described 1）In step
PH value is adjusted with alkaline conditioner, the alkaline conditioner is the mixture of NH3H2O and NH4HCO3.
7. the preparation method of a kind of viscosity depressant for drilling fluid according to claim 6, it is characterised in that the alkalescence is adjusted
Agent is 7-8 in molar ratio by NH3H2O and NH4HCO3:4-6 mixing compositions.
8. the preparation method of a kind of viscosity depressant for drilling fluid according to claim 4, it is characterised in that described first part molten
Liquid filters after being made by the qualitative Medium speed filter paper of Φ 9cm, is then added drop-wise to again in second part of solution.
9. the preparation method of a kind of viscosity depressant for drilling fluid according to claim 3, it is characterised in that described 2）In step
1h first is stirred in 60 DEG C of constant temperature, then is cooled to 50 DEG C, stirs 2h, reaction is made.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610112017.5A CN105647501B (en) | 2016-02-29 | 2016-02-29 | Viscosity depressant for drilling fluid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610112017.5A CN105647501B (en) | 2016-02-29 | 2016-02-29 | Viscosity depressant for drilling fluid and preparation method thereof |
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| CN105647501A CN105647501A (en) | 2016-06-08 |
| CN105647501B true CN105647501B (en) | 2018-04-24 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10266745B2 (en) * | 2017-02-03 | 2019-04-23 | Saudi Arabian Oil Company | Anti-bit balling drilling fluids, and methods of making and use thereof |
| CN115404053B (en) * | 2022-08-16 | 2023-09-15 | 成都汇能恒源科技有限公司 | Organosilicon diluent for drilling fluid and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350047A (en) * | 2000-10-25 | 2002-05-22 | 宋福如 | High-temperature viscosity reducer for drilling fluid and its production process |
| CN1807542A (en) * | 2005-12-22 | 2006-07-26 | 新疆三精德润科技有限公司 | Temperature-resistant viscosity-reducing agent for boring fluid |
| CN103059821A (en) * | 2013-01-25 | 2013-04-24 | 大庆合正化工有限公司 | Preparation method of drilling fluid diluent compound methyl silicate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009114611A2 (en) * | 2008-03-13 | 2009-09-17 | M-I Drilling Fluids Uk Limited | Viscosity reducer for water-based muds |
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2016
- 2016-02-29 CN CN201610112017.5A patent/CN105647501B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350047A (en) * | 2000-10-25 | 2002-05-22 | 宋福如 | High-temperature viscosity reducer for drilling fluid and its production process |
| CN1807542A (en) * | 2005-12-22 | 2006-07-26 | 新疆三精德润科技有限公司 | Temperature-resistant viscosity-reducing agent for boring fluid |
| CN103059821A (en) * | 2013-01-25 | 2013-04-24 | 大庆合正化工有限公司 | Preparation method of drilling fluid diluent compound methyl silicate |
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| CN105647501A (en) | 2016-06-08 |
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