CN110016324A - A kind of high-temperature resistant water base drilling fluid extracting and cutting agent and preparation method thereof - Google Patents
A kind of high-temperature resistant water base drilling fluid extracting and cutting agent and preparation method thereof Download PDFInfo
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- CN110016324A CN110016324A CN201810020898.7A CN201810020898A CN110016324A CN 110016324 A CN110016324 A CN 110016324A CN 201810020898 A CN201810020898 A CN 201810020898A CN 110016324 A CN110016324 A CN 110016324A
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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
- C08F2/00—Processes of polymerisation
- C08F2/04—Polymerisation in solution
- C08F2/10—Aqueous solvent
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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
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
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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
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- 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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Abstract
The present invention relates to a kind of high-temperature resistant water base drilling fluid extracting and cutting agents in oil drilling working solution field and preparation method thereof.A kind of high-temperature resistant water base drilling fluid extracting and cutting agent, the following components by weight percentage comprising copolymerization: (1) 40%~80% monomer A；(2) 10%~20% monomer B；(3) 5%~20% monomer C；(4) 5%~20% monomer D；The monomer A is selected from acrylamide, N, at least one of N- dimethylacrylamide, isobutyl group acrylamide and acrylonitrile；The monomer B is selected from n-vinyl pyrrolidone；The monomer C is selected from least one of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, dimethyl diallyl ammonium chloride；The monomer D is selected from amphiphilic macromolecular monomer C18PEGMA；There is high-temperature resistant water base drilling fluid extracting and cutting agent of the invention good mention to cut performance and heat resistance, temperature resistant capability can reach 150 DEG C, it can be used as the extracting and cutting agent of oil drilling working solution, improve working solution to the large rock-carrying ability and hole cleaning ability of the suspending stabilized ability of palliative or heavy weight additive and enhancing system.
Description
Technical field
The present invention relates to oil drilling working solution fields, furtherly, are related to a kind of high-temperature resistant water base drilling fluid and mention to cut
Agent and preparation method thereof.
Background technique
Extracting and cutting agent is a kind of core processing agent of drilling fluid, and main function is the shear force for promoting drilling fluid system, enhancing
The landwaste carrying capacity of drilling fluid, improves the effect of hole cleaning of drilling fluid.In addition, in low density or high density drilling fluid,
Usually need to be added the solid phase materials such as hollow beads palliative or barite heavy weight additive, due to depositing between solid phase material and drilling fluid
In density contrast, to avoid palliative from floating or heavy weight additive sedimentation, it is necessary to improve drilling fluid shear force to enhance drilling fluid to solid formation
Suspendability.Mainly use xanthan gum, modified cellulose, artificial-synthetic copolymer etc. as water-base drilling fluid both at home and abroad at present
Extracting and cutting agent, but to viscosify effect while improving drilling fluid suspending power very significant for these extracting and cutting agents, in other words
The increased amplitude of viscosity is greater than the increased amplitude of shear force, to increase the control difficulty to drilling fluid rheology.In addition, xanthan
The extracting and cutting agents such as glue, modified cellulose there is also temperature tolerances not high (150 DEG C of <), the application requirement being unable to satisfy under hot conditions.
The extracting and cutting agent of function admirable can be such that drilling fluid has and close in the upper balance coordinated between drilling fluid various aspects of performance to greatest extent
The ratio of dynamic shear force/yield value to plastic viscosity of reason, the large rock-carrying ability of OPTIMIZATION OF DRILLING FLUID system greatly reduce drilling complexity accident, improve drilling efficiency.
Application No. is 201510158038.6 Chinese patent disclose a kind of drilling fluid aqueous based tackifier extracting and cutting agent and its
Preparation method, the technology is mainly with benzene sulfonic acid, acrylamide, dimethylaminoethyl methacrylate etc. for reaction monomers, with over cure
Sour ammonium, sodium hydrogensulfite and azodiisobutyronitrile are that initiation system prepares extracting and cutting agent.Xiao Jibin (Xiao Jibin clay-free drilling fluid
The preparation research Chemical Industry in Guangzhou of extracting and cutting agent, 2015 (12): 69-71) it discloses with acrylamide (AM), 2- acrylamido-
2- methyl propane sulfonic acid (AMPS), cationic monomer are reaction monomers, using ammonium persulfate, sodium hydrogensulfite as initiation system prepare and
At polymer.(Tian Faguo, Li Jianbo, height build the fine stone of development of the drilling fluid such as woods thickening extracting and cutting agent YF-01 to Tian Faguo etc.
Oiling work progress, 2009,10 (3): 4-8) disclose drilling fluid thickening extracting and cutting agent with acrylamide (AM), 2- acrylamide
Base -2- methyl propane sulfonic acid (AMPS), dimethyl diallyl ammonium chloride (DMDAAC) are reaction monomers, are to draw with ammonium persulfate
It sends out agent and prepares extracting and cutting agent.Extracting and cutting agent disclosed in the above-mentioned prior art is linear molecule water-soluble polymer, is preferably mentioned having
Thickening effect is also bigger while cutting effect.
Summary of the invention
In order to solve existing for existing water-base drilling fluid extracting and cutting agent product, thickening effect is excessive and relatively low (the < of heat resistance
150 DEG C) the problems such as, the present invention proposes a kind of high-temperature resistant water base drilling fluid extracting and cutting agent, and it is water base to relate in particular to a kind of high temperature resistant
Drilling fluid extracting and cutting agent and preparation method thereof.A kind of novel extracting and cutting agent suitable for water-base drilling fluid provided by the invention, is by list
The water-soluble multiple copolymer that body A, monomer B, monomer C and monomer D are polymerized by Raolical polymerizable.Its aqueous solution
High-rate of shear viscosity is low, and low shear rate viscosity is high, and apparent viscosity is low, and ratio of dynamic shear force/yield value to plastic viscosity is high, has apparent " low glutinous height is cut " effect
It answers, heatproof >=150 DEG C, is a kind of water-base drilling fluid extracting and cutting agent with good heat resistance.
One of the object of the invention is to provide a kind of high-temperature resistant water base drilling fluid extracting and cutting agent, comprising copolymerization with weight percent
The following components of meter:
(1) 40%~80% monomer A；
(2) 10%~20% monomer B；
(3) 5%~20% monomer C；
(4) 5%~20% monomer D；
Preferably, the following components by weight percentage comprising copolymerization:
(1) 40%~55% monomer A；
(2) 15%~20% monomer B；
(3) 15%~20% monomer C；
(4) 15%~20% monomer D.
What the present invention prepared is the polymer of special " star-like " structure, more demanding to reaction monomers, reaction monomers it
Between both there is interaction force, but steric hindrance can't be too big, otherwise raw not at " star-like " polymer, but linear polymerization
" low glutinous height is cut " effect is not achieved in object.
The monomer A is selected from acrylamide, N, in N- dimethylacrylamide, isobutyl group acrylamide and acrylonitrile at least
It is a kind of；
The monomer B is selected from n-vinyl pyrrolidone；
The monomer C in MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, dimethyl diallyl ammonium chloride at least
It is a kind of；
The monomer D is selected from amphiphilic macromolecular monomer C18PEGMA；
Wherein shown in the following general formula of molecular formula of the amphiphilic macromolecular monomer C18PEGMA:
N=25, R C16~C18Aliphatic saturated hydrocarbon, molecular weight 1432g/mol.
There is high-temperature resistant water base drilling fluid extracting and cutting agent of the invention good mention to cut performance and heat resistance, temperature resistant capability
It can reach 150 DEG C, can be used as the extracting and cutting agent of oil drilling working solution, improve working solution to the suspending stabilized of palliative or heavy weight additive
Ability and the large rock-carrying ability and hole cleaning ability for enhancing system.
The second object of the present invention is to providing a kind of preparation method of high-temperature resistant water base drilling fluid extracting and cutting agent, it may include following step
It is rapid:
The component is obtained by the dosage by Raolical polymerizable；Used polymerization is common molten
Liquid polymerization.The polymerization reaction is added redox initiator and causes polymerization；Wherein the reducing agent is selected from pentaerythrite
Or at least one of dipentaerythritol.
Specifically, it may include following steps:
1) the monomer A, monomer B, monomer C, monomer D are dissolved in solvent and obtain monomer solution by the dosage；It is described
Solvent is selected from deionized water or distilled water or tap water；Adjust the pH value of monomer solution；It is eventually adding reducing agent and stirs to also
Former agent is all dissolved；
2) adjustment monomer solution temperature is reaction temperature, meanwhile, it is passed through nitrogen under stirring 30~60 minutes, oxygen is then added
Agent initiation reaction；
3) after reaction, be cooled to room temperature, discharge, cut, dry, crush, obtain powdery product to get.
In the step 1), the total weight of the monomer of addition weight concentration in monomer solution is 5%~40%,
Preferably 10%~30%, more preferably 15%~25%.
In the step 1), the pH value of the monomer solution is 7~12, preferably 9~10.
In the step 1), the dosage of the reducing agent by the percentages for accounting for the total monomer weight be 0.4%~
1.2%, preferably 0.8%~1%；
In the step 2), the reaction temperature is 0 DEG C~80 DEG C, preferably 25 DEG C~70 DEG C, more preferably 45 DEG C
~55 DEG C.
In the step 2), reaction time of the polymerization reaction is 0.5 hour~24 hours, preferably 2 hours~8
Hour.
In the step 2), the dosage of the oxidant by the percentages for accounting for the total monomer weight be 1.6%~
4.8%, preferably 3.2%~4%.
The oxidant is selected from least one of potassium peroxydisulfate, ammonium persulfate, sodium peroxydisulfate.
Specifically, the preparation method can comprise the following steps that
Suitable solvent (such as deionized water or distillation is added into the reaction kettle equipped with blender and thermostat in step 1
Water or tap water), it is separately added into monomer A, monomer B, monomer C and the monomer D of required weight under stirring, it is complete to monomer to continue stirring
Adding solvent after portion's dissolution makes total monomer weight concentration 5%~40% (weight) in solution, then with 30% sodium hydroxide
Solution adjusts the pH value of monomer solution to 7~12.It is eventually adding desired amount of reducing agent (pentaerythrite or dipentaerythritol)
And it stirs to reducing agent and all dissolves.
Step 2 starts temperature regulating device, and control monomer solution temperature is 0 DEG C~80 DEG C, meanwhile, nitrogen 30 is passed through under stirring
~60 minutes, desired amount of oxidant (ammonium persulfate etc.) initiation reaction is then added, reacts 0.5 hour~24 hours.
Step 3 is cooled to room temperature, discharges, cuts, dries, crushes after reaction, obtain powdery product to get.
The reducing agent used when redox polymerization of the present invention is pentaerythrite (or dipentaerythritol), is with pentaerythrite
Example carrys out principle of specification, and the symmetry there are four equivalent methylol, with height, season when reacting are contained in pentaerythrite molecule
Four methylols on penta tetrol molecule become four active sites for causing radical reaction, and four kinds of monomers are in symmetrical four work
Property point on the not traditional linear molecule of polymer that polymerize, therefore formed, the four arm " stars centered on pentaerythrite
Type " molecular structure.This special " star-like " polymer, since the product that intermolecular interaction makes has relatively low table
Viscosity and high ratio of dynamic shear force/yield value to plastic viscosity are seen, there is apparent " low glutinous height is cut " effect.Each component interaction, is grafted to season after reacting
On penta tetrol, four arms " star-like " polymer is formed, such as logical formula (I)；If be grafted in dipentaerythritol, six arm " stars are formed
Type " polymer, such as logical formula (II):
Mainly application is water-base drilling fluid under high temperature (150 DEG C) environment to water solubility multiple copolymer provided by the present invention
Extracting and cutting agent, the extracting and cutting agent of the completion fluid and workover fluid that are also applicable as under high temperature (150 DEG C) environment.It specifically, is to send out this
Bright copolymer is configured to certain density aqueous solution applied to drilling fluid, completion fluid or workover fluid.The polymer solution makes
With good " low glutinous height is cut " effect is shown under concentration and hot conditions, i.e., under high-rate of shear, solution apparent viscosity is low, low
Shear force is high under shear rate, in drilling fluid heavy weight additive or palliative or the solid formations such as landwaste there is good suspending power,
Be suitably applied drilling well under high temperature geological environment, complete well, well workover construction involved in working fluid.
Effect of the invention
Compared with the extracting and cutting agents such as existing xanthan gum, modified cellulose, polyacrylamide, extracting and cutting agent tool provided by the invention
Have the following characteristics that (1) by four kinds of non-ionic monomer, cationic monomer and amphiphilic macromolecular monomer function monomers through free radical
Copolyreaction forms, and functional group type is more abundant in molecule, intermolecular to exist simultaneously hydrogen after being dissolved in drilling fluid
Reversible physical interacts between the multiple moleculars such as key, electrostatic interaction, hydrophobic association, since intermolecular interaction is invertibity object
Reason interaction, therefore solution shear force is high at low shear rates, and solution apparent viscosity is low under high-rate of shear, makes solution table
Reveal low apparent viscosity and high ratio of dynamic shear force/yield value to plastic viscosity；(2) using pentaerythrite or dipentaerythritol as redox initiation system
Reducing agent, restoring multiple methylols on agent molecule becomes the multiple active sites for causing radical reaction, therefore the polymerization formed
The not traditional linear molecule of object four arms " star-like " molecular structure centered on pentaerythrite or with dipentaerythritol is
Six arms " star-like " molecular structure at center, this special " star-like " molecular structure make point of functional group in three dimensions
Cloth is more unfolded, and increases the probability that effective interaction occurs between functional group, so that extracting and cutting agent of the present invention
Effect is cut with preferably mentioning；(3) exist in extracting and cutting agent molecule provided by the invention and can inhibit the high warm of polyacrylamide generation
The function monomer vinyl pyrrolidone of hydrolysis effectively prevent acrylamide under high temperature that hydrolysis occurs, improves product
Heat resistance makes the shear force of its aqueous solution that can keep for a long time stable under the high temperature conditions.
In summary several factors, extracting and cutting agent provided by the invention its mention and cut effect and be substantially better than traditional modified cellulose
Class and synthesized polymer species extracting and cutting agent (molecular structure of these products is linear molecule), and temperature resistance ability is higher than xanthan gum,
Being drilled in well working fluid under high temperature geological environment has a good application prospect.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.But the present invention is not restricted by the embodiments.
Embodiment 1
800 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 110 parts of acrylamides (monomer A), 30 parts of n-vinyl pyrrolidone (monomer B), 30 parts of C18PEGMA macromoleculars
Monomer, wins wound industrial group production (monomer D) and 30 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), and stirring is equal
Adjusting monomer solution pH value with 30% sodium hydroxide solution after even is 9, is eventually adding 2 parts of pentaerythrites and stirs to pentaerythrite
All dissolutions.
Start temperature regulating device, control monomer solution temperature be 50 DEG C, meanwhile, nitrogen is passed through under stirring 40 minutes, then plus
Enter 7 parts of ammonium persulfates, reacts 5 hours.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, obtained powder
Shape product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Embodiment 2
800 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 110 parts of acrylamides (monomer A), 30 parts of n-vinyl pyrrolidone (monomer B), 30 parts of C18PEGMA macromoleculars
Monomer (monomer D) and 30 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), after mixing evenly with 30% sodium hydroxide
It is 9 that solution, which adjusts monomer solution pH value, is eventually adding 2 parts of dipentaerythritols and stirs to dipentaerythritol and all dissolves.
Start temperature regulating device, control monomer solution temperature be 50 DEG C, meanwhile, nitrogen is passed through under stirring 40 minutes, then plus
Enter 8 parts of ammonium persulfates, reacts 5 hours.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, obtained powder
Shape product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Embodiment 3
800 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 160 parts of acrylamides (monomer A), 20 parts of n-vinyl pyrrolidone (monomer B), 10 parts of C18PEGMA macromoleculars
Monomer (monomer D) and 10 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), after mixing evenly with 30% sodium hydroxide
It is 9 that solution, which adjusts monomer solution pH value, is eventually adding 2 parts of pentaerythrites and stirs to pentaerythrite and all dissolves.
Start temperature regulating device, control monomer solution temperature be 50 DEG C, meanwhile, nitrogen is passed through under stirring 40 minutes, then plus
Enter 7 parts of ammonium persulfates, reacts 5 hours.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, obtained powder
Shape product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Embodiment 4
800 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 80 parts of acrylamides (monomer A), 40 parts of n-vinyl pyrrolidone (monomer B), 40 parts of C18PEGMA macromoleculars
Monomer (monomer D) and 40 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), after mixing evenly with 30% sodium hydroxide
It is 9 that solution, which adjusts monomer solution pH value, is eventually adding 2 parts of pentaerythrites and stirs to pentaerythrite and all dissolves.
Start temperature regulating device, control monomer solution temperature be 50 DEG C, meanwhile, nitrogen is passed through under stirring 40 minutes, then plus
Enter 7 parts of ammonium persulfates, reacts 5 hours.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, obtained powder
Shape product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Embodiment 5
950 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 28 parts of acrylamides (monomer A), 6 parts of n-vinyl pyrrolidone (monomer B), 8 parts of C18PEGMA macromolecular lists
Body (monomer D) and 8 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C) are molten with 30% sodium hydroxide after mixing evenly
It is 9 that liquid, which adjusts monomer solution pH value, is eventually adding 0.5 part of pentaerythrite and stirs to pentaerythrite and all dissolves.
Start temperature regulating device, control monomer solution temperature be 50 DEG C, meanwhile, nitrogen is passed through under stirring 40 minutes, then plus
Enter 2 parts of ammonium persulfates, reacts 5 hours.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, obtained powder
Shape product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Embodiment 6
600 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 220 parts of acrylamides (monomer A), 60 parts of n-vinyl pyrrolidone (monomer B), 60 parts of C18PEGMA macromoleculars
Monomer (monomer D) and 60 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), after mixing evenly with 30% sodium hydroxide
It is 9 that solution, which adjusts monomer solution pH value, is eventually adding 4 parts of pentaerythrites and stirs to pentaerythrite and all dissolves.
Start temperature regulating device, control monomer solution temperature be 50 DEG C, meanwhile, nitrogen is passed through under stirring 40 minutes, then plus
Enter 15 parts of ammonium persulfates, reacts 5 hours.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, obtained powder
Shape product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Embodiment 7
800 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 110 parts of acrylamides (monomer A), 30 parts of n-vinyl pyrrolidone (monomer B), 30 parts of C18PEGMA macromoleculars
Monomer (monomer D) and 30 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), after mixing evenly with 30% sodium hydroxide
It is 9 that solution, which adjusts monomer solution pH value, is eventually adding 2 parts of pentaerythrites and stirs to pentaerythrite and all dissolves.
Starting temperature regulating device, control monomer solution temperature is 0 DEG C, meanwhile, it is passed through nitrogen under stirring 40 minutes, is then added
7 parts of ammonium persulfates react 5 hours.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, what is obtained is powdered
Product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Embodiment 8
800 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 110 parts of acrylamides (monomer A), 30 parts of n-vinyl pyrrolidone (monomer B), 30 parts of C18PEGMA macromoleculars
Monomer (monomer D) and 30 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), after mixing evenly with 30% sodium hydroxide
It is 9 that solution, which adjusts monomer solution pH value, is eventually adding 2 parts of pentaerythrites and stirs to pentaerythrite and all dissolves.
Start temperature regulating device, control monomer solution temperature be 80 DEG C, meanwhile, nitrogen is passed through under stirring 40 minutes, then plus
Enter 7 parts of ammonium persulfates, reacts 5 hours.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, obtained powder
Shape product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Embodiment 9
800 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 110 parts of acrylamides (monomer A), 30 parts of n-vinyl pyrrolidone (monomer B), 30 parts of C18PEGMA macromoleculars
Monomer (monomer D) and 30 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), after mixing evenly with 30% sodium hydroxide
It is 9 that solution, which adjusts monomer solution pH value, is eventually adding 2 parts of pentaerythrites and stirs to pentaerythrite and all dissolves.
Start temperature regulating device, control monomer solution temperature be 50 DEG C, meanwhile, nitrogen is passed through under stirring 40 minutes, then plus
Enter 7 parts of ammonium persulfates, reacts 0.5 hour.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, obtained powder
Last shape product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Embodiment 10
800 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 110 parts of acrylamides (monomer A), 30 parts of n-vinyl pyrrolidone (monomer B), 30 parts of C18PEGMA macromoleculars
Monomer (monomer D) and 30 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), after mixing evenly with 30% sodium hydroxide
It is 9 that solution, which adjusts monomer solution pH value, is eventually adding 2 parts of pentaerythrites and stirs to pentaerythrite and all dissolves.
Start temperature regulating device, control monomer solution temperature be 50 DEG C, meanwhile, nitrogen is passed through under stirring 40 minutes, then plus
Enter 7 parts of ammonium persulfates, reacts 24 hours.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, obtained powder
Shape product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Embodiment 11
800 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 110 parts of acrylamides (monomer A), 30 parts of n-vinyl pyrrolidone (monomer B), 30 parts of C18PEGMA macromoleculars
Monomer (monomer D) and 30 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), after mixing evenly with 30% sodium hydroxide
It is 9 that solution, which adjusts monomer solution pH value, is eventually adding 0.8 part of pentaerythrite and stirs to pentaerythrite and all dissolves.
Start temperature regulating device, control monomer solution temperature be 50 DEG C, meanwhile, nitrogen is passed through under stirring 40 minutes, then plus
Enter 3.2 parts of ammonium persulfates, reacts 5 hours.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, obtained powder
Last shape product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Embodiment 12
800 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 110 parts of acrylamides (monomer A), 30 parts of n-vinyl pyrrolidone (monomer B), 30 parts of C18PEGMA macromoleculars
Monomer (monomer D) and 30 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), after mixing evenly with 30% sodium hydroxide
It is 9 that solution, which adjusts monomer solution pH value, is eventually adding 2.4 parts of pentaerythrites and stirs to pentaerythrite and all dissolves.
Start temperature regulating device, control monomer solution temperature be 50 DEG C, meanwhile, nitrogen is passed through under stirring 40 minutes, then plus
Enter 9.6 parts of ammonium persulfates, reacts 5 hours.After reaction, it is cooled to room temperature, discharges, cuts, dries, crushes, obtained powder
Last shape product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Comparative example
800 parts of deionized waters are added into the reaction kettle equipped with blender, thermostat, gas-guide tube and reflux condenser,
It is added with stirring 110 parts of acrylamides (monomer A), 30 parts of n-vinyl pyrrolidone (monomer B), 30 parts of C18PEGMA macromoleculars
Monomer (monomer D) and 30 parts of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides (monomer C), after mixing evenly with 30% sodium hydroxide
It is 9 that solution, which adjusts monomer solution pH value,.
Starting temperature regulating device, control monomer solution temperature is 50 DEG C, meanwhile, it is passed through nitrogen under stirring 40 minutes, then divides
Not Jia Ru 3 parts of sodium sulfites and ammonium persulfate, react 5 hours.After reaction, it is cooled to room temperature, discharges, cutting, drying, powder
Broken, obtained powdery product is temperature resistant water base drilling fluid extracting and cutting agent of the present invention.
Extracting and cutting agent performance evaluation
In accordance with the following methods to water-base drilling fluid extracting and cutting agent performance provided by middle embodiment and comparative example of the present invention
It is evaluated:
(1) product appearance is evaluated: being observed by the naked eye the exterior appearance of each product under the conditions of natural light, is found embodiment
It is slightly lurid solid powder in white with product obtained by comparative example.
(2) it mentions and cuts effect assessment:
A, the preparation of extracting and cutting agent aqueous solution: weighing 12 parts of deionized waters, and 400 grams every part, low whipping speed 8000r/min
Under conditions of be added 2 grams of extracting and cutting agent of the present invention into every part of deionized water respectively, stirring to extracting and cutting agent is all dissolved, and is obtained
To required extracting and cutting agent solution to be evaluated (0.5%, weight percent).In addition it weighs and adds under 1 part of 400 grams of deionized waters stirring again
Enter 2 grams of xanthan gum as control sample.
B, using the electronic six-speed rotational viscometer of ZNN-D6 type of the sensible special instrument factory production in Qingdao sea as measurement work
Tool measures each part in described in above-mentioned steps a respectively at room temperature according to method as defined in national standard GB/T16783.1-2006 and mentions and cutting
Agent solution θ600、θ300、θ200、θ100、θ6、θ3Viscosity, then calculate their apparent viscosity AV, plastic viscosity PV, yield value YP
And ratio of dynamic shear force/yield value to plastic viscosity J (the ratio between yield value and plastic viscosity, YP/PV), each viscosity and ratio of dynamic shear force/yield value to plastic viscosity calculation method are as follows: AV=1/2 ×
θ600, PV=θ600-θ300, YP=1/2 × (2 θ300-θ600), J=YP/PV.The measurement of each part solution and calculated result are shown in Table 1.
(3) heat resistance is evaluated:
Repetition is above-mentioned to mention the testing procedure and method cut in effect assessment, the difference is that: measuring each part extracting and cutting agent
Before the performance parameter of solution, the XGRL-4A type that extracting and cutting agent solution is first placed on the sensible special instrument factory production in Qingdao sea is high
In warm roller furnace, heat rolling aging 16 hours, then take out extracting and cutting agent solution and are cooled to room temperature, measure and calculate at 150 DEG C
The performance parameters such as its apparent viscosity AV, plastic viscosity PV, yield value YP and ratio of dynamic shear force/yield value to plastic viscosity J, are as a result listed in table 1.Before comparing aging
The situation of change of the parameters such as extracting and cutting agent solution viscosity afterwards, using the amplitude of variation size of these parameters as evaluation extracting and cutting agent temperature tolerance
The index of energy.
Table 1
(table 1) can be found by comparing embodiment and comparative example and common extracting and cutting agent xanthan gum: in this experiment, J
(Pa/mPas) the bigger shear force for illustrating polymer is higher, and the bigger viscosity for illustrating product of AV, PV is higher, optimal knot
Fruit is that J (Pa/mPas) is big and AV, PV are small, and as can be seen from the above data, xanthan gum effect is best before ageing, utilizes this
It invents the polymer synthesized and xanthan gum is close.But viscosity and shear force all sharply decline after xanthan gum aging, and the present invention closes
It is little therefore better than xanthan gum temperature resistance at the product viscosity and shear force fall that go out.
(1) high-temperature resistant water base drilling fluid of the invention is substantially less than comparative example with extracting and cutting agent apparent viscosity is low, while it is dynamic
Modeling mentions than being noticeably greater than comparative example and cuts significant effect better than comparative example, wherein embodiment 1, embodiment 2, embodiment 4, embodiment
It is close that the mentioning of 10 product and common extracting and cutting agent xanthan gum cuts effect.With apparent " low glutinous height is cut " effect.
(2) compared with common extracting and cutting agent xanthan gum, high-temperature resistant water base drilling fluid extracting and cutting agent of the invention is in 150 DEG C of conditions
Still ratio of dynamic shear force/yield value to plastic viscosity with higher after lower high temperature ageing, and xanthan gum moves modeling under identical aging temperature after aging 16 hours
Than significantly reducing, show that extracting and cutting agent of the invention has good heat resistance.
Claims (10)
1. a kind of high-temperature resistant water base drilling fluid extracting and cutting agent, the following components by weight percentage comprising copolymerization:
(1) 40%~80% monomer A；
(2) 10%~20% monomer B；
(3) 5%~20% monomer C；
(4) 5%~20% monomer D；
The monomer A is at least one in acrylamide, N, N- dimethylacrylamide, isobutyl group acrylamide and acrylonitrile
Kind；
The monomer B is selected from n-vinyl pyrrolidone；
The monomer C is selected from least one of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, dimethyl diallyl ammonium chloride；
The monomer D is selected from amphiphilic macromolecular monomer C18PEGMA；
Wherein the molecular formula of the amphiphilic macromolecular monomer C18PEGMA is shown below:
N=25, R C16~C18Aliphatic saturated hydrocarbon.
2. a kind of high-temperature resistant water base drilling fluid extracting and cutting agent according to claim 1, it is characterised in that comprising copolymerization with weight
Measure the following components of percentages:
(1) 40%~55% monomer A；
(2) 15%~20% monomer B；
(3) 15%~20% monomer C；
(4) 15%~20% monomer D.
3. a kind of preparation method of high-temperature resistant water base drilling fluid extracting and cutting agent according to claim 1 or 2, it is characterised in that packet
Include following steps:
The component is obtained by the dosage by polymerization reaction；Used polymerization is solution polymerization process；Described
Polymerization reaction is added redox initiator and causes polymerization；Wherein the reducing agent is in pentaerythrite or dipentaerythritol
At least one.
4. a kind of preparation method of high-temperature resistant water base drilling fluid extracting and cutting agent according to claim 3, it is characterised in that including
Following steps:
1) the monomer A, monomer B, monomer C, monomer D are dissolved in solvent and obtain monomer solution by the dosage；The solvent
Selected from deionized water or distilled water or tap water；Adjust the pH value of monomer solution；It is eventually adding reducing agent and stirs to reducing agent
All dissolutions；
2) adjustment monomer solution temperature is reaction temperature, meanwhile, it is passed through nitrogen under stirring, oxidant initiation reaction is then added；
3) after reaction, be cooled to room temperature, discharge, cut, dry, crush, obtain powdery product to get.
5. a kind of preparation method of high-temperature resistant water base drilling fluid extracting and cutting agent according to claim 4, it is characterised in that:
In the step 1), the total weight of the monomer of addition weight concentration in monomer solution is 5%~40%, preferably
It is 10%~30%, more preferably 15%~25%.
6. a kind of preparation method of high-temperature resistant water base drilling fluid extracting and cutting agent according to claim 4, it is characterised in that:
In the step 1), the pH value of the monomer solution is 7~12, preferably 9~10.
7. a kind of preparation method of high-temperature resistant water base drilling fluid extracting and cutting agent according to claim 4, it is characterised in that:
In the step 2), the reaction temperature is 0 DEG C~80 DEG C, preferably 25 DEG C~70 DEG C, more preferably 45 DEG C~55
℃。
8. a kind of preparation method of high-temperature resistant water base drilling fluid extracting and cutting agent according to claim 4, it is characterised in that:
In the step 2), the reaction time of the polymerization reaction is 0.5 hour~24 hours, and preferably 2 hours~8 is small
When.
9. a kind of preparation method of high-temperature resistant water base drilling fluid extracting and cutting agent according to claim 4, it is characterised in that:
In the step 1), the dosage of the reducing agent by the percentages for accounting for the total monomer weight be 0.4%~
1.2%, preferably 0.8%~1%；
In the step 2), the dosage of the oxidant by the percentages for accounting for the total monomer weight be 1.6%~
4.8%, preferably 3.2%~4%.
10. a kind of preparation method of high-temperature resistant water base drilling fluid extracting and cutting agent according to claim 4, it is characterised in that:
The oxidant is selected from least one of potassium peroxydisulfate, ammonium persulfate, sodium peroxydisulfate.
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