CN117965153B - Preparation method of composite slick water drag reducer - Google Patents
Preparation method of composite slick water drag reducer Download PDFInfo
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- CN117965153B CN117965153B CN202410365374.7A CN202410365374A CN117965153B CN 117965153 B CN117965153 B CN 117965153B CN 202410365374 A CN202410365374 A CN 202410365374A CN 117965153 B CN117965153 B CN 117965153B
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- -1 cationic modified nonylphenol Chemical class 0.000 claims abstract description 44
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 44
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 44
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims description 41
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 15
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 15
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000012153 distilled water Substances 0.000 claims description 10
- ODZZIKZQNODXFS-UHFFFAOYSA-N n,n'-dimethyl-n'-[2-(methylamino)ethyl]ethane-1,2-diamine Chemical compound CNCCN(C)CCNC ODZZIKZQNODXFS-UHFFFAOYSA-N 0.000 claims description 10
- SNMVRZFUUCLYTO-UHFFFAOYSA-N n-propyl chloride Chemical compound CCCCl SNMVRZFUUCLYTO-UHFFFAOYSA-N 0.000 claims description 10
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 9
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 9
- 229920002866 paraformaldehyde Polymers 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 5
- 230000009467 reduction Effects 0.000 abstract description 11
- 125000002091 cationic group Chemical group 0.000 abstract description 7
- 150000003839 salts Chemical class 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000012267 brine Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 3
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical group C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
- 239000012530 fluid Substances 0.000 description 7
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical group C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000033558 biomineral tissue development Effects 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000006683 Mannich reaction Methods 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical group 0.000 description 1
- 238000005956 quaternization reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 150000003512 tertiary amines Chemical group 0.000 description 1
- 238000011426 transformation method Methods 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000002888 zwitterionic surfactant Substances 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to the technical field of oilfield exploitation and discloses a preparation method of a composite slickwater drag reducer. The smaller the surface tension of the drag reducer, the higher the flowback rate; can effectively prevent slick water from being remained in the stratum after construction, thereby reducing the damage to the stratum. The cationic modified nonylphenol polyoxyethylene ether contains a plurality of cationic groups, can form a betaine structure with sulfonate anions of sodium dodecyl benzene sulfonate, and has good salt resistance; in highly mineralized brine systems, there is still a very high drag reduction rate. Has good application prospect in the fields of slick water fracturing technology and oil gas development.
Description
Technical Field
The invention relates to the technical field of oilfield exploitation, in particular to a preparation method of a composite slick water drag reducer.
Background
The conventional transformation method of the unconventional oil and gas reservoir is mainly a volume fracturing technology, but the technology has the problems of large liquid amount, high discharge capacity and the like, so that the fracturing liquid is required to have the performances of reducing friction resistance, high drag reduction rate, good flowback rate and the like. The slickwater fracturing fluid has very wide application; in actual oil field exploitation, flowback fluid is mostly adopted to prepare slickwater, so that the slickwater has high mineralization degree, and therefore, the drag reducer is required to have excellent salt resistance.
The surfactant such as polyoxyethylene ether type, zwitterionic type, cationic type and the like has wide application prospect in the field of oil field exploitation such as fracturing fluid, drag reducer and the like; chinese patent CN112608727B discloses a slickwater fracturing fluid and a preparation method thereof, wherein a non-ionic surfactant, a zwitterionic surfactant, a freezing point modifier and soluble fibers are compounded to obtain a drag reducer, and then the drag reducer is compounded with a viscosity modifier, a bactericide and the like to obtain the slickwater fracturing fluid, so that the slickwater fracturing fluid has the advantages of high drag reduction rate, low freezing point and the like. However, the drag reducer is relatively complex in raw materials, and the drag reducer and the slickwater fracturing fluid do not exhibit good salt resistance.
Disclosure of Invention
The invention solves the problems of lower drag reduction rate and poor salt resistance of the traditional surfactant slickwater drag reducer.
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation method of a composite slickwater drag reducer comprises the following steps:
(1) Introducing nitrogen into the reaction kettle to control the pressure in the reaction kettle to be 0.4-0.6MPa, adding trimethyl-diethyl nonylphenol-triamine, ethylene oxide and potassium hydroxide, cooling after reaction, adding dilute hydrochloric acid for neutralization, filtering to remove insoluble solids, and concentrating under reduced pressure to remove low-boiling substances to obtain tertiary amine modified nonylphenol polyoxyethylene ether.
(2) Adding N, N-dimethylformamide, tertiary amine modified nonylphenol polyoxyethylene ether and 1-chloropropane into a flask, reacting, concentrating under reduced pressure, washing with petroleum ether, and drying to obtain the cationic modified nonylphenol polyoxyethylene ether.
(3) Distilled water with the proportion of 1g (0.25-0.32 g) of cationic modified nonylphenol polyoxyethylene ether and sodium dodecyl benzene sulfonate are added into a flask to prepare a solution with the mass concentration of (0.4-1.2) g/L, so as to obtain the composite slickwater drag reducer.
Further, the proportion of trimethyl-diethyl nonylphenol-triamine, ethylene oxide and potassium hydroxide in (1) is 1mol (45-60 mol) and (0.08-0.11 mol).
Further, the reaction temperature is controlled to be 125-140 ℃ and the reaction time is controlled to be 2-4h in the step (1).
Further, the proportion of the tertiary amine modified nonylphenol polyoxyethylene ether and 1-chloropropane in (2) is 1g (0.12-0.16 g).
Further, in the step (2), the reaction temperature is controlled to be 120-140 ℃ and the reaction time is controlled to be 48-60h.
Further, the preparation method of the trimethyl-diethyl nonylphenol-triamine comprises the following steps: adding 1,4, 7-trimethyl diethylenetriamine, paraformaldehyde and ethanol into a flask, heating to 60-65 ℃ and pre-reacting for 3-4 hours; after the pre-reaction, adding nonylphenol, heating to 75-80 ℃, carrying out reflux reaction for 6-8 hours, concentrating the solvent, and recrystallizing the product by using ethanol to obtain trimethyl-diethyl nonylphenol-triamine.
Further, the proportion of 1,4, 7-trimethyldiethylenetriamine, paraformaldehyde and nonylphenol is 1mol (3.3-3.9 mol) and (3-3.3 mol).
The invention has the technical effects that: the invention uses 1,4, 7-trimethyl diethylenetriamine, paraformaldehyde and nonylphenol to carry out Mannich reaction to obtain trimethyl-diethyl nonylphenol-triamine containing three nonylphenol and tertiary amine structures; then ring-opening polymerization is carried out with epoxypropane, and finally quaternization reaction is carried out with short carbon chain low steric hindrance 1-chloropropane, thus obtaining the novel cation modified nonylphenol polyoxyethylene ether.
According to the invention, the cationic modified nonylphenol polyoxyethylene ether and sodium dodecyl benzene sulfonate are compounded to obtain the composite slickwater drag reducer, and the cationic modified nonylphenol polyoxyethylene ether contains a plurality of nonylphenol polyoxyethylene ether branched chains and cationic groups, so that the interaction force between water molecules can be effectively reduced, the higher surface activity effect is achieved, and the cationic modified nonylphenol polyoxyethylene ether contains a plurality of cationic groups, can form a unique betaine structure with sulfonate anions of sodium dodecyl benzene sulfonate, and is beneficial to reducing the surface tension. The smaller the surface tension of the drag reducer, the higher the flowback rate; can effectively prevent slick water from being remained in the stratum after construction, thereby reducing the damage to the stratum.
The cationic modified nonylphenol polyoxyethylene ether disclosed by the invention contains a plurality of nonylphenol and polyoxyethylene ether branched chains, and the molecular chains of the drag reducer are mutually entangled through intermolecular hydrophobic association and physical crosslinking of polymer chains to form a regular space network structure, so that friction resistance performance is reduced, and drag reduction rate is obviously improved. The cation modified nonylphenol polyoxyethylene ether contains a plurality of cationic groups, can form a betaine structure with sulfonate anions of sodium dodecyl benzene sulfonate, and has good salt resistance; in highly mineralized brine systems, there is still a very high drag reduction rate. The drag reducer has good practical application in the fields of slick water fracturing technology and oil gas development.
Detailed Description
The CAS number of the 1,4, 7-trimethyl diethylenetriamine is 105-84-0. Paraformaldehyde CAS number is 30125-89-4. The CAS number of the nonylphenol is 104-40-5. The ethylene oxide CAS number is 75-21-8. The CAS number of the 1-chloropropane is 540-54-5.
Example 1
10Mmol of 1,4, 7-trimethyl diethylenetriamine, 33mmol of paraformaldehyde and 30mL of ethanol are added into a flask, the temperature is raised to 65 ℃ and the reaction is carried out for 4 hours; after the pre-reaction, 30mmol of nonylphenol is added, the temperature is increased to 75 ℃, the reflux reaction is carried out for 8 hours, the solvent is concentrated, and the product is recrystallized by ethanol to obtain trimethyl-diethyl nonylphenol-triamine. The reaction formula is:
Introducing nitrogen into the reaction kettle to control the pressure in the reaction kettle to be 0.4MPa, adding 50mmol of trimethyl-diethyl nonylphenol-triamine, 225mmol of ethylene oxide and 5.5mmol of potassium hydroxide, heating to 140 ℃ for reaction for 2 hours, cooling, adding dilute hydrochloric acid to neutralize the pH of the solution to 7, filtering to remove insoluble solids, and concentrating under reduced pressure to remove low-boiling substances to obtain tertiary amine modified nonylphenol polyoxyethylene ether. The reaction mechanism is as follows:
200mL of N, N-dimethylformamide, 40g of tertiary amine modified nonylphenol polyoxyethylene ether and 6.4g of 1-chloropropane are added into a flask, the temperature is raised to 140 ℃, the reaction is carried out for 48 hours, the decompression concentration is carried out, and the petroleum ether is washed and dried, thus obtaining the cationic modified nonylphenol polyoxyethylene ether. The reaction mechanism is as follows:
Distilled water, 10g of cationic modified nonylphenol polyoxyethylene ether and 2.5g of sodium dodecyl benzene sulfonate are added into a flask to prepare a solution with the total mass concentration of 0.4g/L, so as to obtain the composite slickwater drag reducer.
Example 2
10Mmol of 1,4, 7-trimethyl diethylenetriamine, 39mmol of paraformaldehyde and 30mL of ethanol are added into a flask, the temperature is raised to 65 ℃ and the reaction is carried out for 3 hours; after the pre-reaction, 33mmol of nonylphenol is added, the temperature is increased to 80 ℃, the reflux reaction is carried out for 6 hours, the solvent is concentrated, and the product is recrystallized by ethanol to obtain trimethyl-diethyl nonylphenol-triamine.
Introducing nitrogen into the reaction kettle to control the pressure in the reaction kettle to be 0.6MPa, adding 50mmol of trimethyl-diethyl nonylphenol-triamine, 300mmol of ethylene oxide and 4mmol of potassium hydroxide, heating to 125 ℃ for reaction for 4 hours, cooling, adding dilute hydrochloric acid to neutralize the pH of the solution to 7, filtering to remove insoluble solids, and concentrating under reduced pressure to remove low-boiling substances to obtain tertiary amine modified nonylphenol polyoxyethylene ether.
300ML of N, N-dimethylformamide, 40g of tertiary amine modified nonylphenol polyoxyethylene ether and 4.8g of 1-chloropropane are added into a flask, the temperature is raised to 130 ℃, the reaction is carried out for 48 hours, the decompression concentration is carried out, and the cationic modified nonylphenol polyoxyethylene ether is obtained after washing with petroleum ether and drying.
Distilled water, 10g of cationic modified nonylphenol polyoxyethylene ether and 2.8g of sodium dodecyl benzene sulfonate are added into a flask to prepare a solution with the total mass concentration of 0.8g/L, so as to obtain the composite slickwater drag reducer.
Example 3
10Mmol of 1,4, 7-trimethyl diethylenetriamine, 36mmol of paraformaldehyde and 20mL of ethanol are added into a flask, the temperature is raised to 60 ℃ and the reaction is carried out for 4 hours; after the pre-reaction, 30mmol of nonylphenol is added, the temperature is increased to 75 ℃, the reflux reaction is carried out for 8 hours, the solvent is concentrated, and the product is recrystallized by ethanol to obtain trimethyl-diethyl nonylphenol-triamine.
Introducing nitrogen into the reaction kettle to control the pressure in the reaction kettle to be 0.6MPa, adding 50mmol of trimethyl-diethyl nonylphenol-triamine, 270mmol of ethylene oxide and 4.6mmol of potassium hydroxide, heating to 130 ℃ for reaction for 4 hours, cooling, adding dilute hydrochloric acid to neutralize the pH of the solution to 7, filtering to remove insoluble solids, and concentrating under reduced pressure to remove low-boiling substances to obtain tertiary amine modified nonylphenol polyoxyethylene ether.
300ML of N, N-dimethylformamide, 40g of tertiary amine modified nonylphenol polyoxyethylene ether and 6.4g of 1-chloropropane are added into a flask, the temperature is raised to 120 ℃, the reaction is carried out for 60 hours, the decompression concentration is carried out, and the cationic modified nonylphenol polyoxyethylene ether is obtained after washing with petroleum ether and drying.
Distilled water, 10g of cationic modified nonylphenol polyoxyethylene ether and 3.2g of sodium dodecyl benzene sulfonate are added into a flask to prepare a solution with the total mass concentration of 1.2g/L, so as to obtain the composite slickwater drag reducer.
Comparative example 1
Cationic modified nonylphenol polyoxyethylene ether was prepared as in example 1.
Distilled water and cationic modified nonylphenol polyoxyethylene ether are added into a flask to prepare a solution with the mass concentration of 0.4g/L, so as to obtain the composite slickwater drag reducer.
Comparative example 2
Tertiary amine modified nonylphenol polyoxyethylene ether was prepared as in example 1.
Distilled water, 10g tertiary amine modified nonylphenol polyoxyethylene ether and 2.5g sodium dodecyl benzene sulfonate are added into a flask to prepare a solution with the total mass concentration of 0.4g/L, so as to obtain the composite slickwater drag reducer.
The surface tension of the composite slickwater drag reducer was measured using a surface tensiometer, and the results are shown in table 1.
Table 1 drag reducer surface tension test
The cationic modified nonylphenol polyoxyethylene ether and sodium dodecyl benzene sulfonate are compounded in the embodiment 1-3 to obtain the composite slickwater drag reducer, wherein the surface tension is only 16.17-21.56 mN.m -1; the cationic modified nonylphenol polyoxyethylene ether contains a plurality of nonylphenol polyoxyethylene ether branched chains, so that the interaction force between water molecules can be reduced, the higher surface activity is achieved, and the cationic modified nonylphenol polyoxyethylene ether contains a plurality of cationic groups, can form a unique betaine structure with sulfonate anions of sodium dodecyl benzene sulfonate, and is beneficial to reducing the surface tension. The smaller the surface tension of the drag reducer, the higher the flowback rate; can effectively prevent slick water from being remained in the stratum after construction, thereby reducing the damage to the stratum.
The drag reducer of the comparative example 1 does not contain sodium dodecyl benzene sulfonate, the drag reducer system does not contain betaine structure, the surface tension is larger, and the flowback performance is poor.
The tertiary amine modified nonylphenol polyoxyethylene ether added in comparative example 2 does not contain quaternary ammonium salt groups, can not form a betaine structure with sodium dodecyl benzene sulfonate, has larger surface tension and poor flowback performance.
Distilled water is added into friction testing equipment, a circulating pump is started, the discharge capacity is controlled to be 40L/min, the shearing rate is controlled to be 10 3 s-1, and the stable pressure of the distilled water during circulation is recorded; adding the composite slick water drag reducer into a feed inlet of friction testing equipment, and recording a pressure change value during circulation; drag reduction rate P was calculated.
N= (. DELTA.P 0-△P）/△P×100%.△P0 is the pressure difference across the distilled water cycle. DELTA.P is the pressure difference across the composite slickwater drag reducer cycle. The test results are shown in Table 2.
Table 2 drag reducing agent drag reduction performance test
Adding calcium chloride into the composite slickwater drag reducer, controlling the mass concentration of the calcium chloride to be 800mg/L, then adding sodium chloride, and controlling the total mineralization degree of the solution to be 15000-25000mg/L; drag reduction was then re-tested. The results are shown in Table 3.
Table 3 drag reducer salt resistance performance test
The cationic modified nonylphenol polyoxyethylene ether prepared by the embodiment of the invention contains a plurality of nonylphenol and polyoxyethylene ether branched chains, and the molecular chains of the drag reducer are mutually entangled through intermolecular hydrophobic association and physical crosslinking of polymer chains to form a regular space network structure, so that friction resistance performance is reduced, and drag reduction rate is remarkably improved. The cation modified nonylphenol polyoxyethylene ether contains a plurality of cationic groups, can form a betaine structure with sulfonate anions of sodium dodecyl benzene sulfonate, and has good salt resistance; in highly mineralized brine systems, there is still a very high drag reduction rate.
Claims (4)
1. The preparation method of the composite slick water drag reducer is characterized by comprising the following steps of:
(1) Introducing nitrogen into a reaction kettle, adding trimethyl-diethyl nonylphenol-triamine, ethylene oxide and potassium hydroxide, cooling after reaction, adding dilute hydrochloric acid for neutralization, filtering, and concentrating under reduced pressure to obtain tertiary amine modified nonylphenol polyoxyethylene ether;
The structural formula of the trimethyl-diethyl nonylphenol-triamine is as follows:
；
(2) Adding N, N-dimethylformamide, tertiary amine modified nonylphenol polyoxyethylene ether and 1-chloropropane into a flask, reacting, concentrating under reduced pressure, washing and drying to obtain cation modified nonylphenol polyoxyethylene ether;
(3) Distilled water with the proportion of 1g (0.25-0.32 g) of cationic modified nonylphenol polyoxyethylene ether and sodium dodecyl benzene sulfonate are added into a flask to prepare a solution with the mass concentration of (0.4-1.2) g/L, so as to obtain the composite slickwater drag reducer;
the proportion of the trimethyl-diethyl nonylphenol-triamine, the ethylene oxide and the potassium hydroxide in the (1) is 1mol (45-60 mol) (0.08-0.11 mol);
introducing nitrogen into the reaction kettle to control the pressure in the reaction kettle to be 0.4-0.6MPa;
The reaction temperature is controlled to be 125-140 ℃ and the reaction time is controlled to be 2-4h in the step (1);
The proportion of tertiary amine modified nonylphenol polyoxyethylene ether and 1-chloropropane in the step (2) is 1g (0.12-0.16 g);
the reaction temperature is controlled to be 120-140 ℃ and the reaction time is controlled to be 48-60h in the step (2).
2. The method for preparing the composite slickwater drag reducer of claim 1, wherein the method for preparing the trimethyl-diethyl nonylphenol-triamine is as follows: adding 1,4, 7-trimethyl diethylenetriamine, paraformaldehyde and ethanol into a flask, adding nonylphenol after pre-reaction, continuing the reaction, concentrating the solvent, and recrystallizing to obtain trimethyl-diethyl nonylphenol-triamine.
3. The method for preparing the composite slickwater drag reducer according to claim 2, wherein the proportion of the 1,4, 7-trimethyl diethylenetriamine, the paraformaldehyde and the nonylphenol is 1mol (3.3-3.9 mol) (3-3.3 mol).
4. The method for preparing a composite slickwater drag reducer according to claim 2, wherein in the method for preparing trimethyl-diethyl nonylphenol-triamine, the pre-reaction is controlled at 60-65 ℃ for 3-4 hours; the reaction temperature is controlled to be 75-80 ℃ and the reaction time is 6-8h.
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| CN104403656A (en) * | 2014-11-27 | 2015-03-11 | 胜利油田胜利化工有限责任公司 | Novel zwitterionic slickwater fracturing fluid and preparation method thereof |
| CN104449648A (en) * | 2014-11-27 | 2015-03-25 | 陕西科技大学 | Drag reducer for slickwater fracturing on unconventional oil and gas reservoirs and preparation method of drag reducer |
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| CN111635749A (en) * | 2020-06-11 | 2020-09-08 | 四川光亚聚合物化工有限公司 | Slick water system with resistance reduction and sand carrying functions and preparation method thereof |
| CN112694885B (en) * | 2020-12-08 | 2023-03-31 | 中国石油天然气股份有限公司大港油田分公司 | High-activity drag reducer, self-imbibition energy-increasing extraction type slickwater fracturing fluid system suitable for shale oil reservoir, and preparation method and application thereof |
| CN116855239A (en) * | 2023-05-25 | 2023-10-10 | 四川川庆井下科技有限公司 | Composite slick water drag reducer and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104403656A (en) * | 2014-11-27 | 2015-03-11 | 胜利油田胜利化工有限责任公司 | Novel zwitterionic slickwater fracturing fluid and preparation method thereof |
| CN104449648A (en) * | 2014-11-27 | 2015-03-25 | 陕西科技大学 | Drag reducer for slickwater fracturing on unconventional oil and gas reservoirs and preparation method of drag reducer |
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