CN103710016A - Dry-powder structural fluid drag reducer and preparation method thereof - Google Patents

Dry-powder structural fluid drag reducer and preparation method thereof Download PDF

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Publication number
CN103710016A
CN103710016A CN201310725242.2A CN201310725242A CN103710016A CN 103710016 A CN103710016 A CN 103710016A CN 201310725242 A CN201310725242 A CN 201310725242A CN 103710016 A CN103710016 A CN 103710016A
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parts
initiator
aqueous solution
flow improver
structural fluid
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张吉才
严超
贾振福
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SICHUAN BEIENNENG CHEMICAL Co Ltd
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SICHUAN BEIENNENG CHEMICAL Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00Copolymers 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
    • C08F220/02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/52Amides or imides
    • C08F220/54Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
    • C08F220/56Acrylamide; Methacrylamide
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60Compositions for stimulating production by acting on the underground formation
    • C09K8/62Compositions for forming crevices or fractures
    • C09K8/66Compositions based on water or polar solvents
    • C09K8/68Compositions based on water or polar solvents containing organic compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60Compositions for stimulating production by acting on the underground formation
    • C09K8/84Compositions based on water or polar solvents
    • C09K8/86Compositions based on water or polar solvents containing organic compounds
    • C09K8/88Compositions based on water or polar solvents containing organic compounds macromolecular compounds
    • C09K8/882Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2208/00Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/28Friction or drag reducing additives

Abstract

The invention discloses a drag reducer for oilfield yield increase and a preparation method thereof, particularly a dry-powder structural fluid drag reducer and a preparation method thereof, belonging to the technical field of oilfield yield increase agents. The dry-powder structural fluid drag reducer is prepared from the following raw materials in parts by weight: 750-950 parts of water, 90-130 parts of cationic monomer, 700-1300 parts of acrylamide, 9.5-37.5 parts of initiator A and 7.5-37.5 parts of initiator B. The dry-powder structural fluid drag reducer product has the advantages of temperature resistance, aging resistance, salt resistance and favorable compatibility with various fracture acidizing additives, has important meanings for oilfield yield increase; and the synthesis of the dry-powder structural fluid drag reducer is performed at 150 DEG C above and completed instantaneously, and thus, the method has the advantages of short polymerization time, stable reaction, high production efficiency and very stable product performance.

Description

A kind of dry powder type structural fluid flow improver and preparation method thereof
Technical field
The present invention relates to flow improver that a kind of oilfield stimulation uses and preparation method thereof, especially a kind of dry powder type structural fluid flow improver and preparation method thereof, belongs to oilfield stimulation agent technical field.
Background technology
Fracture acidizing is the main well stimulation of oil-gas field development.Fracturing liquid is the working fluid of fracturing process, and fracturing liquid pumps into stratum after the supercharging of high pressure pumping-in equipment, presses off crack in stratum, and extends crack.General fracturing liquid is mainly comprised of the additive of viscosifying agent and linking agent and other and reservoir compatibility, because fracturing liquid main purpose is to carry fracturing propping agents and reduce leak-off, conventionally adopt linking agent to be formed frozen glue, have and carry preferably the ability of propping agent and lower filtration capacity.But because the crosslinked rear viscosity of fracturing liquid raises rapidly, conventionally more than viscosity can reach 1000mPa.S, therefore in tubing string, flow and have larger frictional resistance, at present at the conventional hydroxypropyl guar fracturing fluid system of petroleum industry, after adopting organic boron crosslinked, its frictional resistance is equivalent to clear water conventionally with 30% left and right of frictional resistance under condition.
Shale gas hydrocarbon-bearing pool depth of burial in In Southwest China is generally in 3500-5000m left and right, and the shale gas reservoir that the Jianghan Oil-field of particularly take is representative, need to improve gas well output by the seam net pressure break of large discharge capacity.But because oil reservoir buries deeply, formation temperature is high, large discharge capacity sandfrac or alternately acid fracturing process fracturing liquid frictional resistance is higher, is subject to the restriction of uphole equipment infusion ability and the pressure-bearing limit, and well stimulation processing parameter has been subject to certain restriction.For example, for the reservoir of degree of depth 4500m, bottom-hole treating pressure, in 100MPa left and right, if do not take drag reduction measure, adopts conventional fracturing fluid system ground construction pressure will reach 100MPa left and right at present, has substantially exceeded the limit of fracturing unit.
Reducing Hydro Fracturing Stimulation Treatment operation pressure at present also can be by the method for weighted fracture fluid, but can affect on the one hand of the fracturing fluid crosslinked and heatproof endurance of cutting energy after adding salt, and drop into also very high, therefore must reduce the frictional resistance of fracturing fluid system, thereby well stimulation can be implemented smoothly.
Summary of the invention
Goal of the invention of the present invention is: for the problem of above-mentioned existence, provide that a kind of polymerization time is short, reacting balance, production cost are low, the dry powder type structural fluid flow improver of reliable product quality, to effectively reduce Hydro Fracturing Stimulation Treatment operation pressure.
The technical solution used in the present invention is as follows:
A dry powder type structural fluid flow improver, raw material packet contains following component by weight: 750~950 parts, water, 90~130 parts of cationic monomers, 700~1300 parts of acrylamides, 9.5~37.5 parts of initiator As, 7.5~37.5 parts of initiator Bs; And make by the following method:
(1) dosing: water is added in dosing still, under agitation add cationic monomer, then dosing still is heated, under agitation add acrylamide again, treat that it dissolves completely to obtain preparing liquid, the temperature of whole process is not more than 30 ℃;
(2) regulate pH value: pH value to 6.5~9.5 that regulate described preparation liquid; The adjustment of this step pH value can adopt conventional basic materials to regulate, as: calcium hydroxide, sodium hydroxide, potassium hydroxide etc., preferably regulate pH value to 7~9;
(3) polymerization: step 2 gained configuration liquid is proceeded to reactor, under agitation add successively the initiator A aqueous solution and the initiator B aqueous solution in preparation liquid, then standingly treat implode reaction, implode obtains swelling polymer body after having reacted;
(4) aftertreatment: finally swelling polymer body is carried out to granulation, oven dry, screening, obtain described dry powder type structural fluid flow improver;
Wherein: described cationic monomer is MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, methacrylic acid N, N-dimethylamino ethyl ester, acrylyl oxy-ethyl-trimethyl salmiac, vinylformic acid N, one or more in N-dimethylamino ethyl ester or dimethyl diallyl ammonium chloride, described initiator A is superoxide, and described initiator B is sulphite.
Described initiator A is one or more of Potassium Persulphate, ammonium persulphate, hydrogen peroxide, and described initiator B is one or more of sodium bisulfite, S-WAT, potassium sulfite.
Further, described raw material packet contains following component by weight: 800~900 parts, water, 100~120 parts of cationic monomers, 800~1200 parts of acrylamides, 15~30 parts of initiator As, 12~30 parts of initiator Bs.
The mass concentration of the described initiator A aqueous solution is 1~3%, and the mass concentration of the described initiator B aqueous solution is 1~3%.
Initiator can reach by different concentration the effect of controlling polymerization rate, and further, the mass concentration of the described initiator A aqueous solution is 1.5~2.5%, and the mass concentration of the described initiator B aqueous solution is 1.5~2.5%.
A preparation method for dry powder type structural fluid flow improver, makes by following steps:
(1) dosing: 750~950 parts of water are added in dosing still, under agitation add 90~130 parts of cationic monomers, then dosing still is heated, under agitation add again 700~1300 parts of acrylamides, treating that it dissolves completely obtains preparing liquid, and the temperature of whole process is not more than 30 ℃;
(2) regulate pH value: pH value to 6.5~9.5 that regulate described preparation liquid; The adjustment of this step pH value can adopt conventional basic materials to regulate, as: calcium hydroxide, sodium hydroxide, potassium hydroxide etc., preferably regulate pH value to 7~9;
(3) polymerization: step 2 gained configuration liquid is proceeded to reactor, under agitation add successively the initiator A aqueous solution and the initiator B aqueous solution in preparation liquid, then standingly treat implode reaction, implode obtains swelling polymer body after having reacted;
(4) aftertreatment: finally swelling polymer body is carried out to granulation, oven dry, screening, obtain described dry powder type structural fluid flow improver;
Wherein: described cationic monomer is MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, methacrylic acid N, N-dimethylamino ethyl ester, acrylyl oxy-ethyl-trimethyl salmiac, vinylformic acid N, one or more in N-dimethylamino ethyl ester or dimethyl diallyl ammonium chloride, described initiator A is superoxide, and described initiator B is sulphite.
Described initiator A is one or more of Potassium Persulphate, ammonium persulphate, hydrogen peroxide, and described initiator B is one or more of sodium bisulfite, S-WAT, potassium sulfite.
Further, described each component is in weight part: 800~900 parts, water, 100~120 parts of cationic monomers, 800~1200 parts of acrylamides, 15~30 parts of initiator As, 12~30 parts of initiator Bs.
The mass concentration of the described initiator A aqueous solution is 1~3%, and the mass concentration of the described initiator B aqueous solution is 1~3%.
Initiator can reach by different concentration the effect of controlling polymerization rate, and further, the mass concentration of the described initiator A aqueous solution is 1.5~2.5%, and the mass concentration of the described initiator B aqueous solution is 1.5~2.5%.
Adopting the synthetic structure-type flow improver of the method is according to macromolecular solution rheology theory, macromolecular solution Theory of Viscoelasticity, the new development of structural fluid rheology theory and application thereof, the chemical agent of development of new, it is supramolecular aggregation (they change with velocity gradient and reversible) at can automatically the associate combination that forms a plurality of molecules of molecules in solution chain, further form the supramolecule spacial framework that is covered with whole solution space, become typical structural fluid, because supramolecular aggregation can carry out reversible association under high shear rate, therefore its resistance reducing performance is very excellent, its dissolution rate just abundant swelling within 3 minutes, when flow improver concentration is 0.1%, the drag reducing efficiency of this flow improver reaches as high as 80%.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows: described dry powder type structural fluid flow improver, product heatproof, ageing-resistant, salt tolerant, and good with the various additive compatiblenesies of fracture acidizing, significant to oil-gas field volume increase, described dry powder type structural fluid flow improver is produced temperature while synthesizing and can be reached more than 150 ℃, and is to complete in moment, polymerization time is short, reacting balance, production efficiency is high, and product performance are highly stable.
Embodiment
Disclosed all features in this specification sheets, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this specification sheets, unless narration especially all can be replaced by other equivalences or the alternative features with similar object.That is,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
Dry powder type structural fluid flow improver of the present invention, each raw material is commercially available.
embodiment 1
A kind of dry powder type structural fluid of the present embodiment flow improver, makes by following steps:
(1) dosing: the water of 750 weight parts is added in dosing still, the cationic monomer MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride that under agitation adds 90 weight parts, then dosing still is heated, under agitation add again the acrylamide of 700 weight parts, treating that it dissolves completely obtains preparing liquid, and the temperature of whole process is 30 ℃;
(2) regulate pH value: adopt calcium hydroxide to regulate the pH value to 6.5 of described preparation liquid;
(3) polymerization: step 2 gained configuration liquid is proceeded to reactor, under agitation to preparation, add successively in liquid initiator A Potassium Persulphate 9.5 weight parts (to be mixed with concentration and to be 1% persulfate aqueous solution, persulfate aqueous solution is 950 weight parts) and initiator B sodium bisulfite 7.5 weight parts (be mixed with concentration and be 1% aqueous solution of sodium bisulfite, aqueous solution of sodium bisulfite is 750 weight parts), then standingly treat implode reaction, implode obtains swelling polymer body after having reacted;
(4) aftertreatment: (gained flow improver particle is inserted to revolution percolation machine to be dried finally swelling polymer body to be carried out to granulation, oven dry, temperature is controlled at 95~100 ℃, and then flow improver particle is inserted to vibrated fluidized bed be dried, temperature is controlled at 75~80 ℃), screening (by the flow improver particle after drying through 80 targets sieve screenings), obtain described dry powder type structural fluid flow improver.
By the synthetic flow improver outward appearance of the method powder that is white in color, dissolution time 2~3 minutes, when flow improver concentration is 0.1%, the drag reducing efficiency of this flow improver reaches as high as 80%.
embodiment 2
A kind of dry powder type structural fluid of the present embodiment flow improver, makes by following steps:
(1) dosing: the water of 800 weight parts is added in dosing still, the cationic monomer methacrylic acid N that under agitation adds 100 weight parts, N-dimethylamino ethyl ester, then dosing still is heated, under agitation add again the acrylamide of 800 weight parts, treating that it dissolves completely obtains preparing liquid, and the temperature of whole process is 28 ℃;
(2) regulate pH value: adopt calcium hydroxide to regulate the pH value to 7 of described preparation liquid;
(3) polymerization: step 2 gained configuration liquid is proceeded to reactor, under agitation to preparation, add successively in liquid initiator A ammonium persulphate 15 weight parts (to be mixed with concentration and to be 1.5% ammonium persulfate aqueous solution, ammonium persulfate aqueous solution is 1000 weight parts) and initiator B S-WAT 12 weight parts (be mixed with concentration and be 1.5% sodium sulfite aqueous solution, sodium sulfite aqueous solution is 800 weight parts), then standingly treat implode reaction, implode obtains swelling polymer body after having reacted;
(4) aftertreatment: (gained flow improver particle is inserted to revolution percolation machine to be dried finally swelling polymer body to be carried out to granulation, oven dry, temperature is controlled at 95~100 ℃, and then flow improver particle is inserted to vibrated fluidized bed be dried, temperature is controlled at 75~80 ℃), screening (by the flow improver particle after drying through 80 targets sieve screenings), obtain described dry powder type structural fluid flow improver.
By the synthetic flow improver outward appearance of the method powder that is white in color, dissolution time 2~3 minutes, when flow improver concentration is 0.1%, the drag reducing efficiency of this flow improver reaches as high as 75%.
embodiment 3
A kind of dry powder type structural fluid of the present embodiment flow improver, makes by following steps:
(1) dosing: the water of 900 weight parts is added in dosing still, the cationic monomer acrylyl oxy-ethyl-trimethyl salmiac that under agitation adds 120 weight parts, then dosing still is heated, under agitation add again the acrylamide of 1200 weight parts, treating that it dissolves completely obtains preparing liquid, and the temperature of whole process is 27 ℃;
(2) regulate pH value: adopt calcium hydroxide to regulate the pH value to 9 of described preparation liquid;
(3) polymerization: step 2 gained configuration liquid is proceeded to reactor, under agitation in preparation liquid, add successively initiator A hydrogen peroxide, its solute is the 30 weight parts (aqueous hydrogen peroxide solutions that concentration is 2.5%, aqueous hydrogen peroxide solution is 1200 weight parts) and initiator B potassium sulfite 30 weight parts (be mixed with concentration and be 2.5% the potassium sulfite aqueous solution, the potassium sulfite aqueous solution is 1200 weight parts), then standingly treat implode reaction, implode obtains swelling polymer body after having reacted;
(4) aftertreatment: (gained flow improver particle is inserted to revolution percolation machine to be dried finally swelling polymer body to be carried out to granulation, oven dry, temperature is controlled at 95~100 ℃, and then flow improver particle is inserted to vibrated fluidized bed be dried, temperature is controlled at 75~80 ℃), screening (by the flow improver particle after drying through 80 targets sieve screenings), obtain described dry powder type structural fluid flow improver.
By the synthetic flow improver outward appearance of the method powder that is white in color, dissolution time 2~3 minutes, when flow improver concentration is 0.1%, the drag reducing efficiency of this flow improver reaches as high as 75%.
embodiment 4
A kind of dry powder type structural fluid of the present embodiment flow improver, makes by following steps:
(1) dosing: the water of 950 weight parts is added in dosing still, the cationic monomer vinylformic acid N that under agitation adds 130 weight parts, N-dimethylamino ethyl ester, then dosing still is heated, under agitation add again the acrylamide of 1300 weight parts, treating that it dissolves completely obtains preparing liquid, and the temperature of whole process is 30 ℃;
(2) regulate pH value: adopt calcium hydroxide to regulate the pH value to 9.5 of described preparation liquid;
(3) polymerization: step 2 gained configuration liquid is proceeded to reactor, under agitation to preparation, add successively in liquid initiator A ammonium persulphate 37.5 weight parts (to be mixed with concentration and to be 3% ammonium persulfate aqueous solution, ammonium persulfate aqueous solution is 1250 weight parts) and initiator B S-WAT 37.5 weight parts (be mixed with concentration and be 3% sodium sulfite aqueous solution, sodium sulfite aqueous solution 1250 weight parts), then standingly treat implode reaction, implode obtains swelling polymer body after having reacted;
(4) aftertreatment: (gained flow improver particle is inserted to revolution percolation machine to be dried finally swelling polymer body to be carried out to granulation, oven dry, temperature is controlled at 95~100 ℃, and then flow improver particle is inserted to vibrated fluidized bed be dried, temperature is controlled at 75~80 ℃), screening (by the flow improver particle after drying through 80 targets sieve screenings), obtain described dry powder type structural fluid flow improver.
By the synthetic flow improver outward appearance of the method powder that is white in color, dissolution time 2~3 minutes, when flow improver concentration is 0.1%, the drag reducing efficiency of this flow improver reaches as high as 80%.
embodiment 5
A kind of dry powder type structural fluid of the present embodiment flow improver, makes by following steps:
(1) dosing: the water of 875 weight parts is added in dosing still, the cationic monomer diallyldimethylammonChloride Chloride that under agitation adds 112.5 weight parts, then dosing still is heated, under agitation add again the acrylamide of 1000 weight parts, treating that it dissolves completely obtains preparing liquid, and the temperature of whole process is 29 ℃;
(2) regulate pH value: adopt calcium hydroxide to regulate the pH value to 8 of described preparation liquid;
(3) polymerization: step 2 gained configuration liquid is proceeded to reactor, under agitation to preparation, add successively in liquid initiator A Potassium Persulphate 22 weight parts (to be mixed with concentration and to be 2% ammonium persulfate aqueous solution, ammonium persulfate aqueous solution is 1100 weight parts) and initiator B sodium bisulfite 20 weight parts (be mixed with concentration and be 2% aqueous solution of sodium bisulfite, aqueous solution of sodium bisulfite is 1000 weight parts), then standingly treat implode reaction, implode obtains swelling polymer body after having reacted;
(4) aftertreatment: (gained flow improver particle is inserted to revolution percolation machine to be dried finally swelling polymer body to be carried out to granulation, oven dry, temperature is controlled at 95~100 ℃, and then flow improver particle is inserted to vibrated fluidized bed be dried, temperature is controlled at 75~80 ℃), screening (by the flow improver particle after drying through 80 targets sieve screenings), obtain described dry powder type structural fluid flow improver.
By the synthetic flow improver outward appearance of the method powder that is white in color, dissolution time 2~3 minutes, when flow improver concentration is 0.1%, the drag reducing efficiency of this flow improver reaches as high as 75%.
Dry powder type structural fluid flow improver of the present invention, product heatproof, ageing-resistant, salt tolerant, and good with the various additive compatiblenesies of fracture acidizing, significant to oil-gas field volume increase, described dry powder type structural fluid flow improver is produced temperature while synthesizing and can be reached more than 150 ℃, and is to complete in moment, polymerization time is short, reacting balance, production efficiency is high, and product performance are highly stable.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.

Claims (8)

1. a dry powder type structural fluid flow improver, is characterized in that: raw material packet contains following component by weight: 750~950 parts, water, 90~130 parts of cationic monomers, 700~1300 parts of acrylamides, 9.5~37.5 parts of initiator As, 7.5~37.5 parts of initiator Bs; And make by the following method:
(1) dosing: water is added in dosing still, under agitation add cationic monomer, then dosing still is heated, under agitation add acrylamide again, treat that it dissolves completely to obtain preparing liquid, the temperature of whole process is not more than 30 ℃;
(2) regulate pH value: pH value to 6.5~9.5 that regulate described preparation liquid;
(3) polymerization: step 2 gained configuration liquid is proceeded to reactor, under agitation add successively the initiator A aqueous solution and the initiator B aqueous solution in preparation liquid, then standingly treat implode reaction, implode obtains swelling polymer body after having reacted;
(4) aftertreatment: finally swelling polymer body is carried out to granulation, oven dry, screening, obtain described dry powder type structural fluid flow improver;
Wherein: described cationic monomer is MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, methacrylic acid N, N-dimethylamino ethyl ester, acrylyl oxy-ethyl-trimethyl salmiac, vinylformic acid N, one or more in N-dimethylamino ethyl ester or dimethyl diallyl ammonium chloride, described initiator A is superoxide, and described initiator B is sulphite.
2. dry powder type structural fluid flow improver as claimed in claim 1, is characterized in that: described raw material packet contains following component by weight: 800~900 parts, water, 100~120 parts of cationic monomers, 800~1200 parts of acrylamides, 15~30 parts of initiator As, 12~30 parts of initiator Bs.
3. dry powder type structural fluid flow improver as claimed in claim 1, is characterized in that: the mass concentration of the described initiator A aqueous solution is 1~3%, and the mass concentration of the described initiator B aqueous solution is 1~3%.
4. dry powder type structural fluid flow improver as claimed in claim 3, is characterized in that: the mass concentration of the described initiator A aqueous solution is 1.5~2.5%, and the mass concentration of the described initiator B aqueous solution is 1.5~2.5%.
5. a preparation method for dry powder type structural fluid flow improver, is characterized in that: by following steps, make:
(1) dosing: 750~950 parts of water are added in dosing still, under agitation add 90~130 parts of cationic monomers, then dosing still is heated, under agitation add again 700~1300 parts of acrylamides, treating that it dissolves completely obtains preparing liquid, and the temperature of whole process is not more than 30 ℃;
(2) regulate pH value: pH value to 6.5~9.5 that regulate described preparation liquid;
(3) polymerization: step 2 gained configuration liquid is proceeded to reactor, under agitation add successively the initiator A aqueous solution and the initiator B aqueous solution in preparation liquid, then standingly treat implode reaction, implode obtains swelling polymer body after having reacted;
(4) aftertreatment: finally swelling polymer body is carried out to granulation, oven dry, screening, obtain described dry powder type structural fluid flow improver;
Wherein: described cationic monomer is MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, methacrylic acid N, N-dimethylamino ethyl ester, acrylyl oxy-ethyl-trimethyl salmiac, vinylformic acid N, one or more in N-dimethylamino ethyl ester or dimethyl diallyl ammonium chloride, described initiator A is superoxide, and described initiator B is sulphite.
6. dry powder type structural fluid flow improver as claimed in claim 5, is characterized in that: described each component is in weight part: 800~900 parts, water, 100~120 parts of cationic monomers, 800~1200 parts of acrylamides, 15~30 parts of initiator As, 12~30 parts of initiator Bs.
7. dry powder type structural fluid flow improver as claimed in claim 5, is characterized in that: the mass concentration of the described initiator A aqueous solution is 1~3%, and the mass concentration of the described initiator B aqueous solution is 1~3%.
8. dry powder type structural fluid flow improver as claimed in claim 7, is characterized in that: the mass concentration of the described initiator A aqueous solution is 1.5~2.5%, and the mass concentration of the described initiator B aqueous solution is 1.5~2.5%.
CN201310725242.2A 2013-12-25 2013-12-25 Dry-powder structural fluid drag reducer and preparation method thereof Pending CN103710016A (en)

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CN105924575A (en) * 2016-06-28 2016-09-07 江西富诚环保新材料科技有限公司 Composite drag reducer special for shale gas and preparation method thereof
CN107964399A (en) * 2017-11-23 2018-04-27 北京捷贝通石油技术股份有限公司 A kind of shale gas pressure break multifunctional nano lotion drag reducer and preparation method thereof
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CN102679158A (en) * 2011-02-18 2012-09-19 S.P.C.M.股份有限公司 A process for achieving improved friction reduction in hydraulic fracturing and coiled tubing applications in high salinity conditions
CN103333672A (en) * 2013-01-11 2013-10-02 中国石油天然气股份有限公司 Salt-tolerant resistance-reducing agent applied for shale gas reservoir
CN103289667A (en) * 2013-05-13 2013-09-11 西南石油大学 Flow improver for shale gas reservoir fracturing and preparation method thereof
CN103265940A (en) * 2013-05-25 2013-08-28 西南石油大学 Water base fracture drag reducer
CN103265941A (en) * 2013-05-28 2013-08-28 西南石油大学 Weighting water-based fracturing drag reducer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103937484A (en) * 2014-05-09 2014-07-23 余维初 Shale gas well slickwater fracturing fluid system high-efficiency emulsion quick water-soluble drag reducer
CN103937484B (en) * 2014-05-09 2015-06-10 余维初 Shale gas well slickwater fracturing fluid system high-efficiency emulsion quick water-soluble drag reducer
CN109844061A (en) * 2016-06-17 2019-06-04 肯优应用化学有限公司 The polymer powder being easily dispersed extracted for hydro carbons
CN109844061B (en) * 2016-06-17 2022-02-18 肯优应用化学有限公司 Readily dispersible polymer powder for hydrocarbon extraction
CN105924575A (en) * 2016-06-28 2016-09-07 江西富诚环保新材料科技有限公司 Composite drag reducer special for shale gas and preparation method thereof
CN107964399A (en) * 2017-11-23 2018-04-27 北京捷贝通石油技术股份有限公司 A kind of shale gas pressure break multifunctional nano lotion drag reducer and preparation method thereof
CN107964399B (en) * 2017-11-23 2021-03-05 捷贝通石油技术集团股份有限公司 Multifunctional nano emulsion drag reducer for shale gas fracturing and preparation method thereof

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