CN100436564C - Temperature-resistant viscosity-reducing agent for boring fluid - Google Patents
Temperature-resistant viscosity-reducing agent for boring fluid Download PDFInfo
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- CN100436564C CN100436564C CNB2005101337973A CN200510133797A CN100436564C CN 100436564 C CN100436564 C CN 100436564C CN B2005101337973 A CNB2005101337973 A CN B2005101337973A CN 200510133797 A CN200510133797 A CN 200510133797A CN 100436564 C CN100436564 C CN 100436564C
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Abstract
The present invention relates to a temperature resistant viscosity reducing agent for drilling fluid, which is prepared through copolymerization, sulfonation, etc. of natural humic acid and organic silicon compounds. The humic acid class viscosity-reducing agent can be adsorbed on edges of clay particles to improve the hydrating properties of the clay particles, the combination between sides as well as sides and surfaces of clay particles is disassembled, the organic silicon compounds are combined to disassemble structures between polymer macromolecules and clay particles, and the viscosity enhancing characteristic of high molecular polymers is completely eliminated. The temperature resistant viscosity reducing agent is suitable for various water base drilling mud systems, has good viscosity reduction effect, and can obviously improve the flowability of the drilling fluid. The present invention has excellent high temperature resistant and salt resistant properties and functions of inhibiting water sensitive stratum expansion, collapse, etc. The properties of the present invention are stable in the process of high solid phase and high density well drilling; the gel strength of inactive drilling fluid is low, and the recovery of the well drilling is not influenced. The present invention has the advantages of little consumption, low cost, long maintaining effect on mud, small maintenance workloads, innocuity, no pollution, and atoxic decomposition in a natural environment.
Description
Background technology
In drilling process, because a large amount of soil properties is constantly got off by the drill bit smear metal, be dissolved in the drilling fluid, the reticulated structure that forms between the clay particle, cause solid load to increase, cause drilling fluid viscosity to increase, mobile and mud property variation, the resistance that drill bit is subjected to increases, and causes the generation of accidents such as bit freezing.Because the adsorption group of viscosity depressant for drilling fluid is preferentially adsorbed on the more weak place of aquation, clay particle edge, the hydration layer of hydrophilic group weakens or breaks and forms reticulated structure between the clay particle, emits free water.Viscosity-depression agent is adsorbed in the drilling cuttings surface, suppresses drilling cuttings hydration swelling and dispersion, reduces the shear force and the viscosity of drilling fluid, increases flowability, so viscosity-depression agent plays important effect to regulating drilling fluid rheology.
At present, Chang Yong viscosity-depression agent has:
Natural matter is the viscosity-depression agent on basis: modified lignin mahogany sulfonate, modified tannin extract class and modification tannin, with xylogen, tannin extract modification class altogether, and its versatility, viscosity reducing effect are good, but heatproof is low, and salt resistance is poor, and large usage quantity, usage quantity are 1%-5%.
Inorganic viscosity-depression agent: inorganic phosphate salt, organic phosphate, its versatility, compatibleness viscosity reducing effect are good, but heatproof is low, and maintenance time is short, and large usage quantity, usage quantity are 0.5%-1.5%.
Polymer viscosity reducer: the polymer viscosity reducer of acrylic copolymer class, hydrolyzed acrylonitrile copolymer analog, the polymer viscosity reducer that contains sulfonic acid group, cation group etc., its temperature resistance, salt resistance are good, consumption is few, viscosity reducing effect is better, but need strict control pH value, the production cost height, complex manufacturing, usage quantity are 0.3%-1%.
Positive colloid drilling fluid thinner: by Na-HPAN and NH
3Other low-molecular weight polymer that contains the adsorption group of a large amount of bear electricity in-HPAN and the molecular structure, it is viscosity reduction but also have inhibition not only, but cooperates MMH mud to use, and selective, usage quantity is 0.5%-1.5%.
By organosilane monomer, polyacrylonitrile, organotin and hydrofluoric ether copolymerization class; Temperature resistance, salt resistance, anticalcium are good, and viscosity reducing effect is good.But the production cost height, production technique is more assorted, the consumption height, usage quantity is 1%-3%.
The problem the present invention who uses the existence of temperature resistance viscosity-depression agent at present drilling well is in through for many years test and research, developed a kind of in high solid phase, high-density drilling process, stable performance, the drilling fluid gel-strength is low when static, does not influence the recovery drilling well, usage quantity is few, cost is low, and it is long that mud is kept effect, and maintenance workload is little, and nontoxic, pollution-free, drilling well temperature resistance viscosity-depression agent that can nontoxic decomposition in physical environment.
Summary of the invention
The object of the invention is that the drilling well of development is made through reactions such as copolymerization, sulfonation by natural humic acid and silicoorganic compound with the temperature resistance viscosity-depression agent.The humic-acid kind viscosity-depression agent adsorbs on the clay particle edge, increase the clay particle hydrating capacity, break clay particle Bian-Bian, limit-face combination, (chemical structure is a polymkeric substance polymer straight chain type to be combined with organic silicon compound, the neat methyl group of outwards arranging of space structure, have heatproof stability and hydrophobic property) break the structure between polymkeric substance polymer and the clay particle, eliminate the sticking characteristic of putting forward of high molecular polymer fully.Temperature resistance viscosity-depression agent of the present invention is applicable to various water-based drilling mud systems, viscosity reducing effect is good, it is remarkable to improve the mobile property effect of drilling fluid, has excellent high temperature resistance (use temperature is more than 180 ℃), anti-salt property, suppresses effects such as water-sensitive strata expands, collapses.In high solid phase, high-density drilling process, stable performance, the drilling fluid gel-strength is low when static, does not influence the recovery drilling well, and usage quantity is few, and cost is low, and it is long that mud is kept effect, and maintenance workload is little, and nontoxic, pollution-free, can nontoxicly decompose in physical environment.
Temperature-resistant viscosity-reducing agent for boring fluid of the present invention, form by methyl siliconic acid, the acid of methyl high boiling-point silicon, sodium hydroxide, humic acids, sodium allylsulfonate, anhydrous sodium sodium sulphate, formaldehyde, polydimethylsiloxane, polyether-modified dimethyl siloxane, with weak acid, alkali reaction carry out in two steps, copolyreaction, sulfonation reaction, emulsification dispersion and drying step make, wherein the ratio of each component is; With 5 tons of reactors is radix, carries out in two steps in weak acid, alkali reaction: the first step water: sodium hydroxide: methyl siliconic acid=18-22: 11-13: 10-12; The second step water: sodium hydroxide: methyl high boiling-point silicon acid=5-7: 5.0-5.5: 2.8-3.2; Methyl high boiling Sodium silanolate in the copolyreaction: methyl silicon sodium alcoholate: humic acids: sodium allylsulfonate: sodium sulphite anhydrous 99.3: formaldehyde: polydimethylsiloxane: polyether-modified dimethyl siloxane=100-120: 60-65: 78-83: 5-6: 14-15: 14-15: 3-4.
The preparation method of temperature-resistant viscosity-reducing agent for boring fluid follows these steps to carry out:
A, weak acid, alkali reaction carry out in two steps
(CH
3)
3SiOH+NaOH→(CH
3)
3SiONa+H
2O；
Methyl high boiling-point silicon acid+NaOH → with (CH
3)
3SiONa;
In water: the ratio of sodium hydroxide: methyl siliconic acid=18-22: 11-13: 10-12, water is added in the reactor, start stirring, slowly add sodium hydroxide and be stirred to dissolving, add methyl siliconic acid again, be warming up to 80 ℃, 80 ℃-90 ℃ of controlled temperature, reaction 1h generates colourless or little yellow transparent methyl silicon sodium alcoholate liquid;
In water: sodium hydroxide: methyl high boiling-point silicon acid=5-7: the ratio of 5.0-5.5: 2.8-3.2, water is added in the reactor, start stirring, slowly add sodium hydroxide and be stirred to dissolving, add the acid of methyl high boiling-point silicon again, be warming up to 115 ℃, 115 ℃-125 ℃ of controlled temperature, reaction 1-2h generates little yellow methyl high boiling Sodium silanolate liquid;
B, copolyreaction
In the methyl high boiling Sodium silanolate: the ratio of methyl silicon sodium alcoholate: humic acids: sodium allylsulfonate=100-120: 60-65: 78-83: 5-6, the methyl high boiling Sodium silanolate is added in the reactor, start stirring, add methyl silicon sodium alcoholate, humic acids respectively, be warming up to 85 ℃, 85 ℃-95 ℃ of controlled temperature, reaction 1-2h, add sodium allylsulfonate again, in 85 ℃-95 ℃ of temperature, reaction 2-3h;
C, sulfonation reaction
Ratio in 14-15: 14-15 adds sodium sulphite anhydrous 99.3, formaldehyde, keeps 85 ℃-95 ℃ of controlled temperature, reaction 3-4h;
D, emulsification disperse
In 3-4: the 3-4 ratio adds polydimethylsiloxane, polyether-modified dimethyl siloxane mixing and emulsifying liquid, and 95 ℃-105 ℃ of controlled temperature carry out emulsification and disperse reaction 1-2h;
E, drying, pulverizing, packing get final product.
Description of drawings
Referring to accompanying drawing
Fig. 1 is a finished product process flow sheet of the present invention
Fig. 2 is a methyl silicon sodium alcoholate process flow sheet of the present invention
Fig. 3 is a methyl high boiling Sodium silanolate process flow sheet of the present invention
Embodiment
Embodiment 1
A, weak acid, alkali reaction carry out in two steps
(CH
3)
3SiOH+NaOH→(CH
3)
3SiONa+H
2O；
In water: sodium hydroxide: the ratio of methyl siliconic acid, water 18 is added in the reactors, start stirring, slowly add sodium hydroxide 11 and be stirred to dissolving, add methyl siliconic acid 10 again, be warming up to 80 ℃, 80 ℃ of controlled temperature, reaction 1h generates colourless or little yellow transparent methyl silicon sodium alcoholate liquid;
Methyl high boiling-point silicon acid+NaOH → with (CH
3)
3SiONa;
In water: sodium hydroxide: the ratio of methyl high boiling-point silicon acid, water 5 is added in the reactors, start stirring, slowly add sodium hydroxide 5.0 and be stirred to dissolving, add methyl high boiling-point silicon acid 2.8 again, be warming up to 115 ℃, 115 ℃ of controlled temperature, reaction 1h generates little yellow methyl high boiling Sodium silanolate liquid;
B, copolyreaction
In the methyl high boiling Sodium silanolate: methyl silicon sodium alcoholate: humic acids: the ratio of sodium allylsulfonate, methyl high boiling Sodium silanolate 100 is added in the reactor, start stirring, add methyl silicon sodium alcoholate 60, humic acids 78 respectively, be warming up to 85 ℃, 85 ℃ of controlled temperature, reaction 1h, add sodium allylsulfonate 5 again, in 85 ℃ of temperature, reaction 2h;
C, sulfonation reaction
Add sodium sulphite anhydrous 99.3 14, formaldehyde 14 respectively, keep 85 ℃ of controlled temperature, reaction 3h;
D, emulsification disperse
Add macromolecular chain polydimethylsiloxane 3, polyether-modified dimethyl siloxane 3 mixing and emulsifying liquid more respectively, 95 ℃ of controlled temperature carry out emulsification and disperse reaction 1h;
E, drying (water content is less than 15%), pulverizing (passing through the standard sieve surplus of diameter 2.00mm less than 5%), packing get final product, and usage quantity is 0.3%-1%.
Embodiment 2
A, weak acid, alkali reaction carry out in two steps
(CH
3)
3SiOH+NaOH→(CH
3)
3SiONa+H
2O；
In water: the ratio of sodium hydroxide: methyl siliconic acid=18-22: 11-13: 10-12, water 20 is added in the reactor, start stirring, slowly add sodium hydroxide 12 and be stirred to dissolving, add methyl siliconic acid 11 again, be warming up to 80 ℃, 85 ℃ of controlled temperature, reaction 1.5h generates colourless or little yellow transparent methyl silicon sodium alcoholate liquid;
Methyl high boiling-point silicon acid+NaOH → with (CH
3)
3SiONa;
In water: sodium hydroxide: methyl high boiling-point silicon acid=5-7: the ratio of 5.0-5.5: 2.8-3.2, water 6 is added in the reactor, start stirring, slowly add sodium hydroxide 5.3 and be stirred to dissolving, add methyl high boiling-point silicon acid 3.0 again, be warming up to 115 ℃, 120 ℃ of controlled temperature, reaction 1.5h generates little yellow methyl high boiling Sodium silanolate liquid;
B, copolyreaction
In the methyl high boiling Sodium silanolate: the ratio of methyl silicon sodium alcoholate: humic acids: sodium allylsulfonate=100-120: 60-65: 78-83: 5-6, methyl high boiling Sodium silanolate 110 is added in the reactor, start stirring, add methyl silicon sodium alcoholate 63, humic acids 80 respectively, be warming up to 85 ℃, 90 ℃ of controlled temperature, reaction 1.5h, add sodium allylsulfonate 5.5 again, in 90 ℃ of temperature, reaction 2.5h;
C, sulfonation reaction
Add sodium sulphite anhydrous 99.3 14.5, formaldehyde 14.5 respectively, keep 90 ℃ of controlled temperature, reaction 3.5h;
D, emulsification disperse
Add macromolecular chain polydimethylsiloxane 3.5, polyether-modified dimethyl siloxane 3.5 mixing and emulsifying liquid more respectively, 100 ℃ of controlled temperature carry out emulsification and disperse reaction 1.5h;
E, drying (water content is less than 15%), pulverizing (passing through the standard sieve surplus of diameter 2.00mm less than 5%), packing get final product, and usage quantity is 0.3%-1%.
Embodiment 3
A, weak acid, alkali reaction carry out in two steps
(CH
3)
3SiOH+NaOH→(CH
3)
3SiONa+H
2O；
In water: sodium hydroxide: the ratio of methyl siliconic acid, water 22 is added in the reactors, start stirring, slowly add sodium hydroxide 13 and be stirred to dissolving, add methyl siliconic acid 12 again, be warming up to 80 ℃, 90 ℃ of controlled temperature, reaction 2h generates colourless or little yellow transparent methyl silicon sodium alcoholate liquid;
Methyl high boiling-point silicon acid+NaOH → with (CH
3)
3SiONa;
In water: sodium hydroxide: the ratio of methyl high boiling-point silicon acid, water 7 is added in the reactors, start stirring, slowly add sodium hydroxide 5.5 and be stirred to dissolving, add methyl high boiling-point silicon acid 3.2 again, be warming up to 115 ℃, 125 ℃ of controlled temperature, reaction 2h generates little yellow methyl high boiling Sodium silanolate liquid;
B, copolyreaction
In the methyl high boiling Sodium silanolate: methyl silicon sodium alcoholate: humic acids: the ratio of sodium allylsulfonate, methyl high boiling Sodium silanolate 120 is added in the reactor, start stirring, add methyl silicon sodium alcoholate 65, humic acids 83 respectively, be warming up to 85 ℃, 95 ℃ of controlled temperature, reaction 1h, add sodium allylsulfonate 6 again, in 95 ℃ of temperature, reaction 3h;
C, sulfonation reaction
Add sodium sulphite anhydrous 99.3 15, formaldehyde 15 respectively, keep 95 ℃ of controlled temperature, reaction 4h;
D, emulsification disperse
Add macromolecular chain polydimethylsiloxane 4, polyether-modified dimethyl siloxane 4 mixing and emulsifying liquid more respectively, 105 ℃ of controlled temperature carry out emulsification and disperse reaction 2h;
E, drying (water content is less than 15%), pulverizing (passing through the standard sieve surplus of diameter 2.00mm less than 5%), packing get final product, and usage quantity is 0.3%-1%.
Embodiment 4
A, weak acid, alkali reaction carry out in two steps
(CH
3)
3SiOH+NaOH→(CH
3)
3SiONa+H
2O；
In water: sodium hydroxide: the ratio of methyl siliconic acid, water 21 is added in the reactors, start stirring, slowly add sodium hydroxide 11 and be stirred to dissolving, add methyl siliconic acid 12 again, be warming up to 80 ℃, 87 ℃ of controlled temperature, reaction 1h generates colourless or little yellow transparent methyl silicon sodium alcoholate liquid;
Methyl high boiling-point silicon acid+NaOH → with (CH
3)
3SiONa;
In water: sodium hydroxide: methyl high boiling-point silicon acid=5-7: the ratio of 5.0-5.5: 2.8-3.2, water 6.5 is added in the reactor, start stirring, slowly add sodium hydroxide 5.3 and be stirred to dissolving, add methyl high boiling-point silicon acid 3.1 again, be warming up to 115 ℃, 115 ℃ of controlled temperature, reaction 1.5h generates little yellow methyl high boiling Sodium silanolate liquid;
B, copolyreaction
In the methyl high boiling Sodium silanolate: the ratio of methyl silicon sodium alcoholate: humic acids: sodium allylsulfonate=100-120: 60-65: 78-83: 5-6, boil sodium alkoxide 115 of methyl silicon height is added in the reactors, start stirring, add methyl silicon sodium alcoholate 63, humic acids 81 respectively, be warming up to 85 ℃, 88 ℃ of controlled temperature, reaction 1h, add sodium allylsulfonate 6 again, in 88 ℃ of temperature, reaction 2.5h;
C, sulfonation reaction
Add sodium sulphite anhydrous 99.3 14, formaldehyde 15 respectively, keep 88 ℃ of controlled temperature, reaction 3h;
D, emulsification disperse
Add macromolecular chain polydimethylsiloxane 4, polyether-modified dimethyl siloxane 4 mixing and emulsifying liquid more respectively, 98 ℃ of controlled temperature carry out emulsification and disperse reaction 2h;
E, drying (water content is less than 15%), pulverizing (passing through the standard sieve surplus of diameter 2.00mm less than 5%), packing get final product, and usage quantity is 0.3%-1%.
Claims (2)
1, a kind of temperature-resistant viscosity-reducing agent for boring fluid, it is characterized in that forming by methyl siliconic acid, the acid of methyl high boiling-point silicon, sodium hydroxide, humic acids, sodium allylsulfonate, sodium sulphite anhydrous 99.3, formaldehyde, polydimethylsiloxane, polyether-modified dimethyl siloxane, make with weak acid, alkali reaction, copolyreaction, sulfonation reaction, emulsification dispersion and drying step, wherein the ratio of each component is: with 5 tons of reactors is the radix weight ratio, carries out in two steps in weak acid, alkali reaction: the first step water: sodium hydroxide: methyl siliconic acid=18-22: 11-13: 10-12; The second step water: sodium hydroxide: methyl high boiling-point silicon acid=5-7: 5.0-5.5: 2.8-3.2; Methyl high boiling Sodium silanolate in the copolyreaction: methyl silicon sodium alcoholate: humic acids: sodium allylsulfonate: sodium sulphite anhydrous 99.3: formaldehyde: polydimethylsiloxane: polyether-modified dimethyl siloxane=100-120: 60-65: 78-83: 5-6: 14-15: 14-15: 3-4: 3-4.
2, the preparation method of temperature-resistant viscosity-reducing agent for boring fluid according to claim 1 is characterized in that following these steps to carrying out:
A, weak acid, alkali reaction carry out in two steps
(CH
3)
3SiOH+NaOH→(CH
3)
3SiONa+H
2O；
Methyl high boiling-point silicon acid+NaOH → with (CH
3)
3SiONa;
In water: the ratio of sodium hydroxide: methyl siliconic acid=18-22: 11-13: 10-12, water is added in the reactor, start stirring, slowly add sodium hydroxide and be stirred to dissolving, add methyl siliconic acid again, be warming up to 80 ℃, 80 ℃-90 ℃ of controlled temperature, reaction 1-2h generates colourless or little yellow transparent methyl silicon sodium alcoholate liquid;
In water: sodium hydroxide: methyl high boiling-point silicon acid=5-7: the ratio of 5.0-5.5: 2.8-3.2, water is added in the reactor, start stirring, slowly add sodium hydroxide and be stirred to dissolving, add the acid of methyl high boiling-point silicon again, be warming up to 115 ℃, 115 ℃-125 ℃ of controlled temperature, reaction 1-2h generates little yellow methyl high boiling Sodium silanolate liquid;
B, copolyreaction
In the methyl high boiling Sodium silanolate: the ratio of methyl silicon sodium alcoholate: humic acids: sodium allylsulfonate=100-120: 60-65: 78-83: 5-6, the methyl high boiling Sodium silanolate is added in the reactor, start stirring, add methyl silicon sodium alcoholate, humic acids respectively, be warming up to 85 ℃, 85 ℃-95 ℃ of controlled temperature, reaction 1-2h, add sodium allylsulfonate again, in 85 ℃-95 ℃ of temperature, reaction 2-3h;
C, sulfonation reaction
Ratio in 14-15: 14-15 adds sodium sulphite anhydrous 99.3, formaldehyde, keeps 85 ℃-95 ℃ of controlled temperature, reaction 3-4h;
D, emulsification disperse
In 3-4: the 3-4 ratio adds polydimethylsiloxane, polyether-modified dimethyl siloxane mixing and emulsifying liquid, and 95 ℃-105 ℃ of controlled temperature carry out emulsification and disperse reaction 1-2h;
E, drying, pulverizing, packing get final product.
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|---|---|---|---|
| CNB2005101337973A CN100436564C (en) | 2005-12-22 | 2005-12-22 | Temperature-resistant viscosity-reducing agent for boring fluid |
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|---|---|---|---|
| CNB2005101337973A CN100436564C (en) | 2005-12-22 | 2005-12-22 | Temperature-resistant viscosity-reducing agent for boring fluid |
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| CN100436564C true CN100436564C (en) | 2008-11-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638575B (en) * | 2009-08-25 | 2012-05-02 | 克拉玛依市奥泽工贸有限责任公司 | High-temperature resistant thinner for drilling fluid and production method and use method thereof |
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| CN101805594B (en) * | 2010-04-02 | 2012-09-19 | 卫辉市化工有限公司 | Oil drilling slurry viscosity reducer |
| CN103059821B (en) * | 2013-01-25 | 2014-09-10 | 大庆合正化工有限公司 | Preparation method of drilling fluid diluent compound methyl silicate |
| CN105647501B (en) * | 2016-02-29 | 2018-04-24 | 扬州润达油田化学剂有限公司 | Viscosity depressant for drilling fluid and preparation method thereof |
| CN106833555B (en) * | 2017-01-24 | 2019-05-31 | 福州大学 | The method and its application of drilling fluid thinner are prepared using landfill leachate |
| CN106978152A (en) * | 2017-04-24 | 2017-07-25 | 平利县双泰重晶石粉有限责任公司 | A kind of barite thinner, its preparation method and application |
| CN109181670B (en) * | 2018-09-07 | 2020-06-09 | 中国科学院化学研究所 | Efficient thick oil viscosity reducer and preparation method thereof |
| CN109097004A (en) * | 2018-10-11 | 2018-12-28 | 河北硅谷化工有限公司 | Drilling fluid high temperature resistant thinner |
| CN114181686B (en) * | 2021-06-29 | 2023-03-21 | 中国石油天然气集团有限公司 | High-temperature-resistant and saturated-salt-resistant zwitterionic viscosity reducer and preparation and application thereof |
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