CN110606909A - Flow pattern regulator copolymer for drilling fluid and preparation method thereof - Google Patents
Flow pattern regulator copolymer for drilling fluid and preparation method thereof Download PDFInfo
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- CN110606909A CN110606909A CN201911016338.5A CN201911016338A CN110606909A CN 110606909 A CN110606909 A CN 110606909A CN 201911016338 A CN201911016338 A CN 201911016338A CN 110606909 A CN110606909 A CN 110606909A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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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
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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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
- C09K8/36—Water-in-oil emulsions
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Abstract
The invention provides a flow pattern regulator copolymer for drilling fluid and a preparation method thereof, belonging to the technical field of drilling fluid. The polymer is prepared from the following raw materials in parts by weight: 15-25 parts of acrylic acid; 2-12 parts of dimethylaminoethyl methacrylate; 5-15 parts of methacryloyloxyethyl trimethyl ammonium chloride; 2-10 parts of potassium hydroxide; 0.01-0.1 part of sodium acetate; 0.01-0.1 part of ammonium persulfate; 801-6 parts of span; 800.01-0.2 parts of Tween; 35-40 parts of water; 10-30 parts of white oil. The flow pattern regulator copolymer is mainly used for drilling fluid, a large number of microstructures can be formed by self-assembly of the obtained product through the isocharged polyelectrolyte, the structural strength of the drilling fluid is improved, and therefore the viscosity increasing and shear improving effects of the drilling fluid are improved.
Description
Technical Field
The invention belongs to the technical field of drilling fluid, and particularly relates to a flow pattern regulator copolymer for drilling fluid and a preparation method thereof.
Background
Drilling fluids are important fluids used in drilling engineering and have a significant impact on the safety and quality of the drilled well. The flow pattern regulator (also called shear agent) is one of the components of the drilling fluid and is mainly used for regulating the flow pattern of the drilling fluid and ensuring the smooth drilling process. However, under the conditions of high salt and high temperature, the rheological property of the water-based drilling fluid is difficult to adjust, the viscosity and the shear force of the drilling fluid are insufficient, the performance attenuation speed is too high, and even the suspension and carrying capacity is lost, so that a series of malignant consequences such as barite settlement and the like are caused.
Currently, the commonly used water-based drilling fluids are flow pattern modifiers containing polyacrylamide or flow pattern modifiers containing xanthan gum.
The flow-pattern modifier containing polyacrylamide does not have salt resistance due to polyelectrolyte effect and the like. For example, the invention discloses a water-based drilling fluid ultra-high temperature stabilizer which is prepared by using acrylamide, acrylic acid, N-allyl benzamide, humic acid and the like as raw materials through a solution polymerization mode, a crosslinking reaction and the like. The stabilizer prepared by the invention is resistant to ultra-high temperature, so that the drilling fluid keeps reasonable rheological property and lower water loss amount under the ultra-high temperature condition, but has no salt resistance.
The flow pattern regulator containing xanthan gum is easy to degrade at high temperature and is not suitable for a bentonite drilling fluid system. For example, CN201410198623.4 discloses a composite weak gel rheology modifier, which is prepared from hydroxyethyl cellulose, polyanionic cellulose, carboxymethyl cellulose, xanthan gum and the like as raw materials by kneading, crosslinking, kneading, peeling and compounding. The flow pattern regulator can be fully compatible with the solid-free water-based drilling fluid, but the temperature resistance can only reach 120 ℃.
In addition, the flow pattern regulators are usually solid powder, and due to the high molecular weight, the flow pattern regulators are slowly added and stirred for a long time to be fully dispersed when the flow pattern regulators are applied on site, so that the working efficiency of the drilling fluid is objectively reduced.
Disclosure of Invention
The invention provides a flow pattern regulator copolymer for drilling fluid and a preparation method thereof, wherein Acrylic Acid (AA), dimethylaminoethyl methacrylate (DMAM), methacryloyloxyethyl trimethyl ammonium chloride (DMC) and other negative and positive ion polyelectrolytes are added to form an isocharged polyelectrolyte, the isocharged polyelectrolyte is compounded with other components, and a reverse phase emulsion-like product is prepared by monomer free radical polymerization and blending of the isocharged polyelectrolyte. The isocharged polyelectrolyte can form a large number of microstructures through self-assembly, the structural strength of the drilling fluid is improved, the viscosity increasing and shear increasing effects of the drilling fluid are improved, and in addition, the obtained flow pattern regulator copolymer has excellent salt resistance and temperature resistance.
On one hand, the invention provides a flow pattern regulator copolymer for drilling fluid, which is prepared from the following raw materials in parts by mass:
15-25 parts of acrylic acid; 2-12 parts of dimethylaminoethyl methacrylate; 5-15 parts of methacryloyloxyethyl trimethyl ammonium chloride; 2-10 parts of potassium hydroxide; 0.01-0.1 part of sodium acetate; 0.01-0.1 part of ammonium persulfate; 801-6 parts of span; 800.01-0.2 parts of Tween; 35-40 parts of water; 10-30 parts of white oil.
Further, the feed additive comprises the following raw materials in parts by weight:
20-22 parts of acrylic acid; 5-10 parts of dimethylaminoethyl methacrylate; 10-12 parts of methacryloyloxyethyl trimethyl ammonium chloride; 5-10 parts of potassium hydroxide; 0.01-0.02 part of sodium acetate; 0.03-0.05 part of ammonium persulfate; span 802-4 parts; tween 800.05-0.15 part; 35-40 parts of water; 15-25 parts of white oil.
Further, the flow pattern modifier copolymer is in the form of a water-in-oil emulsion.
In another aspect, the present invention provides a method for preparing the flow pattern modifier copolymer for drilling fluid, comprising the following steps:
(1) mixing water, acrylic acid, potassium hydroxide, sodium acetate, methacryloyloxyethyl trimethyl ammonium chloride, dimethylaminoethyl methacrylate and tween 80 at normal temperature to obtain a water phase;
(2) mixing white oil and span 80 at normal temperature to obtain an oil phase;
(3) mixing the water phase and the oil phase to obtain emulsion base liquid;
(4) and (3) placing the emulsion base liquid into a reaction kettle, charging nitrogen, adding an initiator for reaction, and cooling after the reaction is finished to obtain the product.
Further, the initiator is ammonium persulfate.
Further, in the step (2), the temperature at ordinary temperature is 25 ℃.
Further, in the step (4), the reaction conditions are as follows: the reaction is carried out for 20h at the constant temperature of 50 ℃.
The flow pattern regulator copolymer for the drilling fluid and the preparation method thereof have the following advantages:
(1) the flow pattern regulator copolymer obtained by the invention has good salt resistance, can reach saturation of salt resistance, and can be used for treating high-salinity stratum.
(2) The flow pattern regulator copolymer obtained by the invention has excellent temperature resistance, can stably play a role in a high-salt and high-temperature environment, can resist the temperature of 120 ℃ when being added into drilling fluid, and can resist the temperature of more than 150 ℃.
(3) The obtained flow pattern regulator copolymer can play an excellent role in increasing viscosity and improving cutting by the supermolecular structure formed by the cutting agent under the condition of low addition.
(4) The flow pattern regulator copolymer obtained by the invention is in a water-in-oil emulsion state, is not solid polymer powder, has good dispersibility, is easy to prepare and has mild reaction conditions.
(5) The flow pattern regulator copolymer obtained by the invention has strong universality and is suitable for traditional bentonite drilling fluid and solid-free drilling fluid systems.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The embodiment of the invention provides a flow pattern regulator copolymer for drilling fluid, which is prepared from the following raw materials in parts by weight:
15-25 parts of acrylic acid; 2-12 parts of dimethylaminoethyl methacrylate; 5-15 parts of methacryloyloxyethyl trimethyl ammonium chloride; 2-10 parts of potassium hydroxide; 0.01-0.1 part of sodium acetate; 0.01-0.1 part of ammonium persulfate; 801-6 parts of span; 800.01-0.2 parts of Tween; 35-40 parts of water; 10-30 parts of white oil.
In the embodiment of the invention, Acrylic Acid (AA), dimethylaminoethyl methacrylate (DMAM), methacryloxyethyl trimethyl ammonium chloride (DMC) and the like are added into a flow pattern regulator XZ-CT (also called a shear solvent) for drilling fluid, wherein the methacryloxyethyl trimethyl ammonium chloride (DMC) is a cationic polyelectrolyte, the Acrylic Acid (AA) and the dimethylaminoethyl methacrylate (DMAM) are anionic polyelectrolytes, two different polyelectrolytes form an isocharged polyelectrolyte, the isocharged polyelectrolyte is compounded with other components, and a reverse phase emulsion-shaped product is prepared by monomer free radical polymerization and blending of the isocharged polyelectrolyte.
In the embodiment of the invention, the heterocharge polyelectrolyte can be self-assembled under the electrostatic action and aggregated into a net structure, the structure is not easy to damage under the high-speed shearing condition, and the self-assembly can be carried out after shearing. The heterogeneous charge polyelectrolyte forms a large number of microstructures through self-assembly, so that the structural strength of the drilling fluid is improved, and the rheological property shows excellent tackifying and shear-improving effects. Meanwhile, under the drive of entropy, the external small-molecule electrolyte is compatible with the heterocharge polyelectrolyte, namely, the salt and the shear strength agent are mutually cooperated, so that the excellent salt resistance of the electrolyte is ensured. Due to the strong electrostatic interaction between the heterocharge polyelectrolytes, the shear strength improver is very stable in the drilling fluid, so that the shear strength improver has excellent temperature resistance.
In a preferred embodiment of the invention, the flow pattern regulator consists of the following raw materials in parts by mass:
20-22 parts of acrylic acid; 5-10 parts of dimethylaminoethyl methacrylate; 10-12 parts of methacryloyloxyethyl trimethyl ammonium chloride; 5-10 parts of potassium hydroxide; 0.01-0.02 part of sodium acetate; 0.03-0.05 part of ammonium persulfate; span 802-4 parts; tween 800.05-0.15 part; 35-40 parts of water; 15-25 parts of white oil.
In a preferred embodiment of the present invention, the flow pattern modifier copolymer is in the form of a water-in-oil emulsion.
In the prior art, the commonly used flow pattern regulator for the drilling fluid is generally solid powder and less emulsion. When the solid powder is applied on site, the solid powder needs to be slowly added and stirred for a long time to be fully dispersed, so that the working efficiency of the drilling fluid is reduced. The water-in-oil emulsion flow pattern regulator provided by the embodiment of the invention can be better dispersed in the drilling fluid. Can be applied to the traditional bentonite drilling fluid and solid-free drilling fluid systems. The universality is strong.
In a preferred embodiment of the invention, the addition mass of the flow pattern modifier copolymer in the drilling fluid is 1-3%. Specifically, the concentration may be 1%, 2% or 3%. Preferably, the addition mass of the flow pattern modifier copolymer in the drilling fluid is 1%. Therefore, the flow pattern regulator copolymer obtained in the embodiment of the invention can realize the shear effect by adding a small amount.
The embodiment of the invention also provides a preparation method of the flow pattern regulator copolymer for the drilling fluid, which comprises the following steps:
(1) respectively mixing water, acrylic acid, potassium hydroxide, sodium acetate, DMC, DMAM and Tween 80 to prepare a water phase at normal temperature;
(2) mixing white oil and span 80 at normal temperature to prepare an oil phase;
(3) fully mixing the water phase and the oil phase to obtain emulsion base liquid;
(4) placing the emulsion base liquid in a reaction kettle, charging nitrogen, and adding ammonium persulfate serving as an initiator to perform reaction; after the reaction is finished, cooling to obtain the product.
Specifically, the ordinary temperature in step (2) may be 25 ℃.
Specifically, the reaction conditions of step (4) are as follows: the reaction is carried out for 20h at the constant temperature of 50 ℃.
The embodiment of the invention prepares the inverse emulsion-shaped product by blending monomer free radical polymerization and the isocharged polyelectrolyte, and is a polymer treating agent prepared based on the self-assembly principle among the isocharged polyelectrolytes.
The present invention will be described in detail with reference to specific examples.
Example 1A flow pattern regulator copolymer XZ-CT for drilling fluid is composed of the following components in parts by weight:
22 parts of acrylic acid; 6 parts of DMAM, 11 parts of DMC, 8 parts of potassium hydroxide, 0.02 part of sodium acetate, 0.04 part of ammonium persulfate, 803 parts of span, 800.1 parts of Tween, 35 parts of water and 16 parts of white oil.
The preparation method of the XZ-CT of the flow pattern regulator copolymer for the drilling fluid comprises the following steps:
(1) respectively mixing water, acrylic acid, potassium hydroxide, sodium acetate, DMC, DMAM and Tween 80 at the normal temperature of 25 ℃ to prepare a water phase;
(2) mixing white oil and span 80 at normal temperature of 25 ℃ to prepare an oil phase;
(3) fully mixing the water phase and the oil phase to obtain emulsion base liquid;
(4) placing the emulsion base liquid in a reaction kettle, charging nitrogen, adding ammonium persulfate serving as an initiator, and reacting at a constant temperature of 50 ℃ for 20 hours; and after the reaction is finished, cooling to obtain a product, sampling, detecting and warehousing.
Example 2A flow pattern regulator copolymer XZ-CT for drilling fluid is composed of the following components in parts by weight:
20 parts of AA, 4 parts of DMAM, 10 parts of DMC, 7 parts of potassium hydroxide, 0.02 part of sodium acetate, 0.04 part of ammonium persulfate, 803 parts of span, 800.1 parts of Tween, 38 parts of water and 19 parts of white oil.
The preparation method of the XZ-CT of the flow pattern regulator copolymer for the drilling fluid comprises the following steps:
(1) respectively mixing water, acrylic acid, potassium hydroxide, sodium acetate, DMC, DMAM and Tween 80 at the normal temperature of 25 ℃ to prepare a water phase;
(2) mixing white oil and span 80 at normal temperature of 25 ℃ to prepare an oil phase;
(3) fully mixing the water phase and the oil phase to obtain emulsion base liquid;
(4) placing the emulsion in a reaction kettle, charging nitrogen, and adding ammonium persulfate serving as an initiator to perform reaction; after the reaction is finished, cooling to obtain free flowing liquid, namely the product.
Comparative example 1The same as example 1 except that Acrylic Acid (AA) was not added.
Comparative example 2The same as example 1, except that dimethylaminoethyl methacrylate (DMAM) was not added.
Comparative example 3The procedure is as in example 1, except that methacryloyloxyethyltrimethylammonium chloride (DMC) is not added.
The following are specific property tests of the flow pattern modifier copolymers obtained in examples 1-2 of the present invention and comparative examples 1-3.
Test example 1Temperature resistance test
The flow-type modifier copolymers obtained in examples 1-2 and comparative examples 1-3 of the present invention were added to a slurry (4% slurry + 1% flow-type modifier copolymer, mass fraction), and compared with a slurry (4% slurry, mass fraction) to which no flow-type modifier copolymer of the present invention was added, the slurry was aged at 150 ℃ for 16 hours, and the temperature resistance thereof was measured, and the results are shown in Table 1, in which the apparent viscosity AV, the plastic viscosity PV, and the dynamic shear force YP,The fluid loss FL.
TABLE 1
From the above, compared with the test soil slurry without the flow pattern regulator, the flow pattern regulator copolymer single agent in the embodiment 1-2 of the invention has strong temperature resistance which can reach 150 ℃. In comparative examples 1 to 3, the rheology was better at normal temperature and the viscosity decreased severely after aging at 150 ℃, which indicates that the comparative examples 1 to 3 were inferior in temperature resistance.
It should be noted that, in this test example, the temperature resistance of the flow pattern modifier in the liquid light slurry is mainly examined, and the mass fraction of the soil slurry is 4%, that is, 4 g of bentonite for drilling fluid is added into 100mL of water, the mixture is stirred at a high speed for 20 minutes, and the soil slurry with the mass fraction of 4% is obtained after being placed for 24 hours at room temperature.
Test example 2Salt resistance test
The flow-type modifier copolymers obtained in examples 1-2 of the present invention were added to a slurry (4% slurry + 1% copolymer of example of the present invention + 15% NaCl, mass fraction), and the salt resistance was compared with that of a slurry (4% slurry + 15% NaCl, mass fraction) to which no flow-type modifier copolymer of the present invention was added, and the resulting mixture was aged at 150 ℃ for 16 hours, as shown in Table 2, in which the apparent viscosity AV, the plastic viscosity PV, the dynamic shear force YP,The fluid loss FL.
TABLE 2
From the above, the regulator obtained by the embodiment of the invention is added into the soil slurry, so that the salt resistance of the soil slurry can reach 15% of NaCl, and meanwhile, under the condition, the high temperature resistance can still reach 150 ℃. Therefore, the regulator obtained in the embodiment of the invention has temperature resistance and salt resistance, while the regulator obtained in the comparative examples 1-3 has similar performance to the regulator without the regulator, has no salt resistance, and shows serious rheological reduction and rapid increase of water loss.
Test example 3Drilling fluid performance testing
The drilling fluid is prepared from the flow pattern regulators obtained in the examples 1-2 and the comparative examples 1-3 according to the following mixture ratio: 1% sakaguchi slurry (400mL) + 0.5% NaOH (2g) + 0.3% composite filtrate reducer + 0.3% coating agent + 0.5% filtrate reducer + 2% inhibitor + 1% flow pattern modifier + 5% KCL + 4% fine mesh calcium + barite + 30% NaCL (density: 1.50g/cm 3). And aging the mixture for 16 hours at 150 ℃, and performing performance test on the drilling fluid obtained in the step.
TABLE 3
Remarking: aging conditions 150 ℃ X16 h API: normal temperature HTHP: 150 ℃ C
From the above, the flow pattern regulator obtained by the embodiment of the invention has good applicability in drilling fluid. The invention can reach the requirement by adding 1 percent into the system.
In situ applications
The flow pattern regulator provided by the invention is used in a drilling fluid system, and 0.3% of coating agent, 0.5% of filtrate reducer, 1% of flow pattern regulator and 2% of inhibitor are added into the drilling fluid according to the original formula; wherein:
flow pattern regulator-
The flow pattern regulator of the embodiment 1 of the invention comprises the following components in parts by weight: 22 parts of acrylic acid; 6 parts of dimethylaminoethyl methacrylate, 11 parts of methacryloyloxyethyl trimethyl ammonium chloride, 8 parts of potassium hydroxide, 0.02 part of sodium acetate, 0.04 part of ammonium persulfate, and 80 parts of span: 3 parts, tween 80: 0.1 part, 35 parts of water and 16 parts of white oil.
Coating agent (coating agent) ─ Pao Yu (coating agent)
The composition comprises the following components in parts by weight: 11 parts of methacrylic acid, 6 parts of acrylamide, 13 parts of vinyl pyrrolidone, 3 parts of methacryloyloxyethyl trimethyl ammonium chloride, 6 parts of potassium hydroxide, 5 parts of potassium chloride, 0.03 part of potassium persulfate, and 80 parts of span: 3.5 parts, OP-10: 0.2 part, 32 parts of water and 23 parts of white oil.
Filtrate reducer-
The composition comprises the following components in parts by weight: 18 parts of acrylamide; 5 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4 parts of methacryloxypropyltrimethylammonium chloride, 3 parts of sodium formate, 0.6 part of sodium hydroxide, 0.04 part of ammonium persulfate, and 80 parts of span: 5 parts, span 20: 0.25 part, 40 parts of water and 24 parts of white oil.
Inhibitor-
The composition comprises the following components in parts by weight: 2 parts of sodium allylsulfonate; 20 parts of dimethyl diallyl ammonium chloride, 3 parts of potassium hydroxide, 5 parts of sodium chloride, 0.2 part of potassium persulfate and 70 parts of water.
The invention is used as a flow pattern regulator in a supermolecular polymer water-based drilling fluid system, and five wells are tested on a Clarity site:
the well numbers are TD77063, T77066, T77076, 7872A and Ma lake 046.
The field accumulation footage is 5995m, the unit price is 236 yuan/m, and the total cost is 149.9709 ten thousand yuan.
Except the leakage of the T77066 well, the leakage drilling fluid is 14.3m3And other wells have no complexity and no accident.
The accumulated construction time is 1780h, the complex time is only 3.33h, the underground complex time rate is 0.19%, the average mechanical drilling speed of the seven zones is improved by 40%, and the second Mar lake 046 well is drilled 11 days earlier than the design construction period.
The supermolecule polymer drilling fluid system has stable performance, strong carrying capacity, clear edge and corner of returned rock debris, simple field construction and maintenance, smooth tripping and drilling and smooth drilling construction.
The flow pattern regulator has excellent rheological property regulating capacity, solves the technical problems (easy leakage, easy collapse and the like) which are not solved before, and has stable drilling fluid performance, normal tripping and drilling, no block falling and collapse phenomena and the like. The cost is low, no pollution is caused to the environment, the requirements of safe, efficient and environment-friendly drilling are met, and the method has good popularization and application prospects.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The flow pattern regulator copolymer for the drilling fluid is characterized by comprising the following raw materials in parts by mass:
15-25 parts of acrylic acid; 2-12 parts of dimethylaminoethyl methacrylate; 5-15 parts of methacryloyloxyethyl trimethyl ammonium chloride; 2-10 parts of potassium hydroxide; 0.01-0.1 part of sodium acetate; 0.01-0.1 part of ammonium persulfate; 801-6 parts of span; 800.01-0.2 parts of Tween; 35-40 parts of water; 10-30 parts of white oil.
2. The copolymer of claim 1, wherein: the composite material is prepared from the following raw materials in parts by mass:
20-22 parts of acrylic acid; 5-10 parts of dimethylaminoethyl methacrylate; 10-12 parts of methacryloyloxyethyl trimethyl ammonium chloride; 5-10 parts of potassium hydroxide; 0.01-0.02 part of sodium acetate; 0.03-0.05 part of ammonium persulfate; span 802-4 parts; tween 800.05-0.15 part; 35-40 parts of water; 15-25 parts of white oil.
3. The copolymer of claim 1, wherein the flow pattern modifier copolymer is in the form of a water-in-oil emulsion.
4. The method for preparing the flow pattern modifier copolymer for drilling fluid as claimed in any one of claims 1 to 3, characterized by comprising the steps of:
(1) mixing water, acrylic acid, potassium hydroxide, sodium acetate, methacryloyloxyethyl trimethyl ammonium chloride, dimethylaminoethyl methacrylate and tween 80 at normal temperature to obtain a water phase;
(2) mixing white oil and span 80 at normal temperature to obtain an oil phase;
(3) mixing the water phase and the oil phase to obtain emulsion base liquid;
(4) and (3) placing the emulsion base liquid into a reaction kettle, charging nitrogen, adding an initiator for reaction, and cooling after the reaction is finished to obtain the product.
5. The method according to claim 4, wherein the initiator is ammonium persulfate.
6. The production method according to claim 4, wherein in the step (2), the temperature of the ordinary temperature is 25 ℃.
7. The method according to claim 4, wherein the reaction is carried out at 50 ℃ for 20 hours in step (4).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113831457A (en) * | 2021-09-26 | 2021-12-24 | 中国海洋石油集团有限公司 | Preparation method of supramolecular material for oil well sand prevention |
| CN114181676A (en) * | 2021-06-30 | 2022-03-15 | 中国石油天然气集团有限公司 | Flow pattern regulator, preparation method thereof and deepwater water-based constant-current-variable drilling fluid |
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| WO2000011046A1 (en) * | 1998-08-19 | 2000-03-02 | Hercules Incorporated | Dialdehyde-modified anionic and amphoteric polyacrylamides for improving strength of paper |
| CN106496408A (en) * | 2016-10-17 | 2017-03-15 | 中石化石油工程技术服务有限公司 | Drilling fluid flow pattern regulator and preparation method thereof |
| CN108559464A (en) * | 2018-04-26 | 2018-09-21 | 中石化石油工程技术服务有限公司 | A kind of oil base drilling fluid flow pattern regulator and preparation method thereof |
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| WO2000011046A1 (en) * | 1998-08-19 | 2000-03-02 | Hercules Incorporated | Dialdehyde-modified anionic and amphoteric polyacrylamides for improving strength of paper |
| CN106496408A (en) * | 2016-10-17 | 2017-03-15 | 中石化石油工程技术服务有限公司 | Drilling fluid flow pattern regulator and preparation method thereof |
| CN108559464A (en) * | 2018-04-26 | 2018-09-21 | 中石化石油工程技术服务有限公司 | A kind of oil base drilling fluid flow pattern regulator and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114181676A (en) * | 2021-06-30 | 2022-03-15 | 中国石油天然气集团有限公司 | Flow pattern regulator, preparation method thereof and deepwater water-based constant-current-variable drilling fluid |
| CN113831457A (en) * | 2021-09-26 | 2021-12-24 | 中国海洋石油集团有限公司 | Preparation method of supramolecular material for oil well sand prevention |
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