CN115960309B - Polymer sand stabilizing agent and preparation method thereof - Google Patents
Polymer sand stabilizing agent and preparation method thereof Download PDFInfo
- Publication number
- CN115960309B CN115960309B CN202310104863.2A CN202310104863A CN115960309B CN 115960309 B CN115960309 B CN 115960309B CN 202310104863 A CN202310104863 A CN 202310104863A CN 115960309 B CN115960309 B CN 115960309B
- Authority
- CN
- China
- Prior art keywords
- acrylamide
- sand
- stabilizing agent
- methylpropanesulfonic acid
- tertiary amine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004576 sand Substances 0.000 title claims abstract description 122
- 239000003381 stabilizer Substances 0.000 title claims abstract description 59
- 229920000642 polymer Polymers 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000178 monomer Substances 0.000 claims abstract description 32
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003999 initiator Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 150000003512 tertiary amines Chemical class 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 230000001376 precipitating effect Effects 0.000 claims abstract description 4
- 230000001276 controlling effect Effects 0.000 claims abstract description 3
- GDFCSMCGLZFNFY-UHFFFAOYSA-N Dimethylaminopropyl Methacrylamide Chemical compound CN(C)CCCNC(=O)C(C)=C GDFCSMCGLZFNFY-UHFFFAOYSA-N 0.000 claims description 10
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 claims description 2
- GXMIHVHJTLPVKL-UHFFFAOYSA-N n,n,2-trimethylpropanamide Chemical compound CC(C)C(=O)N(C)C GXMIHVHJTLPVKL-UHFFFAOYSA-N 0.000 claims description 2
- UUORTJUPDJJXST-UHFFFAOYSA-N n-(2-hydroxyethyl)prop-2-enamide Chemical compound OCCNC(=O)C=C UUORTJUPDJJXST-UHFFFAOYSA-N 0.000 claims description 2
- ZEMHQYNMVKDBFJ-UHFFFAOYSA-N n-(3-hydroxypropyl)prop-2-enamide Chemical compound OCCCNC(=O)C=C ZEMHQYNMVKDBFJ-UHFFFAOYSA-N 0.000 claims description 2
- SWPMNMYLORDLJE-UHFFFAOYSA-N n-ethylprop-2-enamide Chemical compound CCNC(=O)C=C SWPMNMYLORDLJE-UHFFFAOYSA-N 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 11
- 230000002265 prevention Effects 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 description 14
- 230000035699 permeability Effects 0.000 description 13
- 238000002474 experimental method Methods 0.000 description 11
- 238000011049 filling Methods 0.000 description 11
- 230000003068 static effect Effects 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000003786 synthesis reaction Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 description 3
- XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000003921 particle size analysis Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a polymer sand stabilizer, which is prepared by the following steps of dissolving a certain amount of 2-acrylamide-2-methylpropanesulfonic acid in water, regulating the pH value of the solution to 7-8, then adding acrylamide, N-substituted water-soluble acrylamide and unsaturated tertiary amine monomers, controlling the total amount of reaction monomers consisting of 2-acrylamide-2-methylpropanesulfonic acid, acrylamide, N-substituted water-soluble acrylamide and unsaturated tertiary amine monomers to account for 18-30% of the total amount of the solution, introducing nitrogen for deoxidization after stirring and dissolving, adding an initiator, stopping stirring and reacting for 4-8 hours at 50-60 ℃, washing the product gel by using absolute ethyl alcohol, precipitating, crushing and drying to obtain the polymer sand stabilizer; the polymer sand stabilizer provided by the invention can be suitable for sand prevention and fixation of loose sandstone oil fields, can form a film on the surface of rock, has good fluidity, is simple in preparation and construction process, has wide raw material sources, and can be well and widely applied to the field of sand prevention of petroleum engineering.
Description
Technical Field
The invention relates to the technical field of oilfield chemistry, in particular to a polymer sand stabilizing agent and a preparation method thereof.
Background
The existing loose sandstone reservoir widely existing in oil and gas development has the problems of shallow burial, loose reservoir cementation, low rock strength, easy sand production of the reservoir in the production and injection processes, and the like, and if the reservoir is improperly treated and prevented, normal production of an oil field can be seriously affected, high-efficiency development of the oil and gas field is restricted, and the problems of reduced oil field yield, blocked oil pipe and oil pump, increased sand flushing operation frequency and the like are easily caused.
In this regard, a great number of oilfield sand control technologies are correspondingly developed at present for coping with the development of the oil wells easy to produce sand, and as the oilfield sand control technologies continuously tend to be perfect and mature, two major types of chemical sand control and mechanical sand control are gradually formed, wherein the chemical sand control is to inject organic or inorganic chemical agents into loose reservoirs or pre-filled sand layers of the oilfield so as to bond sand grains of the loose sandstone reservoir to stabilize the stratum structure, thereby achieving the aim of addressing both symptoms and root causes, and having irreplaceable superiority compared with other sand control measures. However, conventional chemical sand control systems mainly use phenolic resin-based chemical resins for sand control, which have problems of high density, easy deposition, inability to uniformly inject into the formation, and greater damage to the permeability of the formation after injection. Based on the defects of the existing chemical sand control system, a sand stabilizing agent with strong fluidity, convenient injection, small damage to stratum permeability and good sand inhibition performance is urgently needed to be researched.
Disclosure of Invention
In view of the above, in order to solve the defects of the prior art, the invention provides a polymer sand stabilizing agent and a preparation method thereof, wherein the sand stabilizing agent has good sand inhibiting performance and can keep good flowing performance.
The invention discloses a preparation method of a polymer sand stabilizing agent, which comprises the following steps:
step S1: dissolving a certain amount of 2-acrylamide-2-methylpropanesulfonic acid in water, regulating the pH value of the obtained 2-acrylamide-2-methylpropanesulfonic acid solution to 7-8, adding acrylamide, N-substituted water-soluble acrylamide and unsaturated tertiary amine monomers into the solution, controlling the total amount of reaction monomers consisting of the 2-acrylamide-2-methylpropanesulfonic acid, the acrylamide, the N-substituted water-soluble acrylamide and the unsaturated tertiary amine monomers to account for 18-30% of the solution in percentage by mass, and stirring for 10min at a rotating speed of 150r/min to completely dissolve;
step S2: maintaining stirring conditions, introducing nitrogen into the solution obtained in the step S1 to remove oxygen for 15-20 min, then adding an initiator, stopping stirring, and reacting for 4-8 h at 50-60 ℃ to obtain transparent gel;
step S3: and adding absolute ethyl alcohol into the transparent gel, precipitating, crushing and drying to obtain the polymer sand stabilizing agent.
One embodiment of the invention is that the unsaturated tertiary amine monomer is one or more of N- (3-dimethylaminopropyl) methacrylamide, dimethylaminoethyl methacrylate, N-dimethylacrylamide and N, N-dimethyl-2-methylpropionamide, wherein N- (3-dimethylaminopropyl) methacrylamide is preferably adopted.
One embodiment of the present invention is that the N-substituted water-soluble acrylamide is one or more of N-ethylacrylamide, N-hydroxyethyl acrylamide, N- (3-hydroxypropyl) acrylamide, N- (1, 1-dimethyl-3-oxobutyl) acrylamide, wherein N- (1, 1-dimethyl-3-oxobutyl) acrylamide is preferably used.
An embodiment of the invention is that the 2-acrylamide-2-methylpropanesulfonic acid in the reaction monomer accounts for 0.5-10% of the total amount, and the preferable use amount is 1% by mass.
An embodiment of the present invention is that the unsaturated tertiary amine monomer in the reaction monomer accounts for 3 to 20% of the total amount, and the preferable amount thereof is 9% by mass.
An embodiment of the invention is that the N-substituted water-soluble acrylamide in the reaction monomer accounts for 1-15% of the total amount, and the preferable use amount is 8% in terms of mass percent.
An embodiment of the invention is that the total monomer addition of the reactive monomers is 18-30% by mass, preferably 25% by mass.
It can be seen that the reaction monomers are acrylamide in all parts except for 2-acrylamide-2-methylpropanesulfonic acid, N-substituted water-soluble acrylamide and unsaturated tertiary amine monomers.
In one embodiment of the present invention, the initiator is an azo initiator, and the amount of the initiator is 0.3-0.8% of the total amount of the reaction monomers in percentage by mass, and the types of the initiator in the present invention include, but are not limited to, azo initiators, and experiments by the inventor find that when azo is used as the initiator, the prepared sand stabilizer has good water solubility, high relative molecular weight and less residues, so that the azo initiator is preferred.
Further, in the above preparation method, the reaction temperature in step S2 is preferably 55℃and the reaction time is preferably 4 hours.
Further, the drying temperature in step S3 is 70 ℃.
In addition, the polymer sand stabilizer provided by the invention is prepared according to the method.
The invention has the technical effects that:
1. the polymer sand stabilizer provided by the invention can be suitable for sand prevention and fixation of loose sandstone oil fields, can form a film on the surface of rock, and stabilize clay and sand grains around a shaft, so as to achieve the effects of sand inhibition and fixation, and has good flow property.
2. The polymer sand stabilizing agent provided by the invention has the advantages of simple preparation and construction process and wide raw material sources, and can be well and widely applied to the sand prevention field of petroleum engineering.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1a shows the leakage of sand samples of a control group which is not treated by a sand stabilizing agent in a static sand stabilizing experiment according to the invention;
FIG. 1b shows the leakage of sand samples treated with the sand stabilizing agent in the static sand stabilizing test according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the embodiments of the present invention are not limited thereto, wherein the experimental methods used in the following examples are conventional methods unless otherwise specified; materials, reagents and the like used for the preparation are commercially available unless otherwise specified.
Example 1
Adding 0.125g of 2-acrylamide-2-methylpropanesulfonic acid into 75g of water in a beaker, regulating the pH to 7-8 by using a sodium hydroxide solution, respectively adding 1g N- (1, 1-dimethyl-3-oxo-butyl) acrylamide, 20.125g of acrylamide and 3.75g of N- (3-dimethylaminopropyl) methacrylamide, starting a stirring rod, regulating the stirring rotation speed to 150r/min, stirring for 10min, introducing nitrogen to remove oxygen for 15min after the reaction monomers are completely dissolved, adding 0.1g of an initiator V-044, stopping stirring, carrying out polymerization at 55 ℃ for 4h, adding absolute ethyl alcohol into the obtained gel after the reaction is finished, precipitating, crushing until the polymer gel becomes white solid small particles, and drying to obtain the sand stabilizing agent F-1.
Example 2
This embodiment differs from embodiment 1 in that: in the synthesis process of the sand stabilizing agent, the dosage of 2-acrylamide-2-methylpropanesulfonic acid is changed to 2.5g, the dosage of acrylamide is changed to 17.75g, and the other steps and the dosage of raw materials are the same, so that the sand stabilizing agent F-2 is finally prepared.
Example 3
This embodiment differs from embodiment 1 in that: in the synthesis process of the sand stabilizing agent, the dosage of 2-acrylamide-2-methylpropanesulfonic acid is changed to 0.25g, the dosage of acrylamide is changed to 20g, and the other steps and the dosage of raw materials are the same, so that the sand stabilizing agent F-3 is finally prepared.
Example 4
This embodiment differs from embodiment 1 in that: in the synthesis process of the sand stabilizing agent, the dosage of N- (1, 1-dimethyl-3-oxo-butyl) acrylamide is changed to 0.5g, the dosage of acrylamide is changed to 20.625g, and the rest steps and the raw material dosage are the same, so that the sand stabilizing agent F-4 is finally prepared.
Example 5
This embodiment differs from embodiment 1 in that: in the synthesis process of the sand stabilizing agent, the dosage of N- (1, 1-dimethyl-3-oxo-butyl) acrylamide is changed to 2g, the dosage of acrylamide is changed to 19.125g, and the rest steps and the raw material dosage are the same, so that the sand stabilizing agent F-5 is finally prepared.
Example 6
This embodiment differs from embodiment 1 in that: in the synthesis process of the sand stabilizing agent, the dosage of N- (3-dimethylaminopropyl) methacrylamide is changed to 0.75g, the dosage of acrylamide is changed to 23.125g, and the rest steps and the raw material dosage are the same, so that the sand stabilizing agent F-6 is finally prepared.
Example 7
This embodiment differs from embodiment 1 in that: in the synthesis process of the sand stabilizing agent, the dosage of N- (3-dimethylaminopropyl) methacrylamide is changed to 2.25g, the dosage of acrylamide is changed to 21.625g, and the rest steps and the raw material dosage are the same, so that the sand stabilizing agent F-7 is finally prepared.
Example 8
This embodiment differs from embodiment 1 in that: in the synthesis process of the sand stabilizing agent, the water consumption is changed into 100g, and the other steps and the raw material consumption are the same, so that the sand stabilizing agent F-8 is finally prepared.
Example 9
This embodiment differs from embodiment 1 in that: in the synthesis process of the sand stabilizing agent, the water consumption is changed into 58.3g, and the rest steps and the raw material consumption are the same, so that the sand stabilizing agent F-9 is finally prepared.
To further illustrate the effect of the product, the performance of the product in the present invention will be evaluated in conjunction with examples.
The sand samples used in the following experiments were taken from a domestic oilfield, all sand samples were treated prior to the experiments, washed, dried, and analyzed for sand sample particle size as shown in table 1.
TABLE 1 sand sample particle size analysis results
| Particle size, μm | 325-550 | 106-325 | <106 |
| Mass ratio | 24.5 | 57.3 | 18.2 |
1. Static sand stabilization experiment
Taking 40g sand sample, placing 125ml of 500ppm sand stabilizer solution in example 5 in a 250ml separating funnel together, shaking uniformly, and placing in a 60 ℃ oven for standing for 24 hours; the funnel was then removed, the valve was pulled off, and whether the sand sample leaked out was observed, and a control group without sand stabilizing agent was set, the results of which are shown in fig. 1.
As can be seen from fig. 1, the sand sample treated by the sand stabilizing agent in fig. 1b leaks out only slightly, while the sand sample in the control group in fig. 1a is almost lost, which proves that the sand stabilizing agent has strong static sand stabilizing capability.
2. Sand filling pipe flow experiment
The damage rate of the sand stabilizing agent to the stratum permeability is judged through a sand filling pipe flow experiment, and the smaller the damage rate is, the smaller the damage to the stratum is, and the better the effect is.
The sand filling pipe flow experiment comprises the following specific steps:
(1) Filling sand, namely weighing the sand with the same weight each time, and ensuring that sand samples have similar permeability;
(2) Injecting saline water, and measuring the water permeability;
(3) Wet weight, wet weight-dry weight = pore volume;
(4) Injecting a sand stabilizing agent 1PV, and measuring the injection quantity by using a cylinder at an outlet end;
(5) Taking down the sand filling pipe, and putting the sand filling pipe into an oven for aging for 24 hours at 60 ℃;
(6) The water permeability was measured again and the damage rate was calculated.
The damage rate calculation method is shown in the formula (1):
damage ratio= (permeability before injection-permeability after injection)/permeability before injection (1)
The static sand stabilizing ability and the sand filling pipe flow test results of the sand stabilizing agent are shown in tables 2 to 5, respectively, wherein table 2 is the test result of the performance evaluation of the sand stabilizing agent prepared in examples 1 to 3, table 3 is the test result of the performance evaluation of the sand stabilizing agent prepared in examples 1 and 4 and 5, table 4 is the test result of the performance evaluation of the sand stabilizing agent prepared in examples 1 and 6 and 7, and table 5 is the test result of the performance evaluation of the sand stabilizing agent prepared in examples 1 and 8 and 9.
TABLE 2 static Sand stabilizing ability of sand stabilizing agent and sand filling pipe flow test results (examples 1-3)
As can be seen from Table 2, as the amount of 2-acrylamido-2-methylpropanesulfonic acid increases, the damage rate to the permeability of the stratum decreases and then increases, and the excessive amount of 2-acrylamido-2-methylpropanesulfonic acid causes greater damage to the permeability of the stratum, the result that the 2-acrylamido-2-methylpropanesulfonic acid added amount in example 3 is 1% of the total mass of the reaction monomers is preferred from the viewpoint of cost and effect to prepare the sand stabilizer.
TABLE 3 static Sand stabilizing ability of sand stabilizing agent and sand filling pipe flow test results (examples 1, 4, 5)
As can be seen from table 3, when the addition amount of N- (1, 1-dimethyl-3-oxobutyl) acrylamide is small, the sand stabilizing ability is poor, and in the static sand stabilizing experiment, sand samples leak out; as the addition amount of N- (1, 1-dimethyl-3-oxo-butyl) acrylamide is increased, the sand stabilizing effect is better, the damage to the stratum permeability is also gradually reduced, the comprehensive cost and effect are achieved, and the sand stabilizing agent is prepared by taking N- (1, 1-dimethyl-3-oxo-butyl) acrylamide as the result of 8% of the total mass of the reaction monomers in the embodiment 5.
TABLE 4 static Sand stabilizing ability of sand stabilizing agent and sand filling pipe flow test results (examples 1, 6, 7)
As can be seen from Table 4, as the amount of N- (3-dimethylaminopropyl) methacrylamide added increases, the damage to the permeability of the stratum becomes smaller and then larger, the amount of N- (3-dimethylaminopropyl) methacrylamide added is too much, the damage to the permeability of the stratum is larger, the comprehensive cost and effect are high, and the sand stabilizer is prepared by taking N- (3-dimethylaminopropyl) methacrylamide as the result of 9% of the total mass of the reaction monomers in the preferred embodiment 7.
TABLE 5 static Sand stabilizing ability of sand stabilizing agent and sand filling pipe flow test results (examples 1, 8, 9)
As can be seen from table 5, when the monomer concentration is too low, the sand stabilizing ability is poor, and in the static sand stabilizing experiment, the sand sample leaks out; the sand stabilizing effect becomes better as the monomer concentration increases, and the damage rate to the stratum is also increased. The sand stabilizer is prepared by combining the cost and effect and preferably using the result that the total concentration of the reaction monomers in the embodiment 1 is about 25%.
From the above, the invention uses 2-acrylamide-2-methylpropanesulfonic acid, N- (3-dimethylaminopropyl) methacrylamide, acrylamide and N- (1, 1-dimethyl-3-oxo-butyl) acrylamide as raw materials, azo diiso Ding Mi hydrochloride (V-044) as an initiator, and prepares polymer gel through aqueous solution polymerization, then precipitates the prepared gel with ethanol, pulverizes and dries to obtain the polymer sand stabilizer, and the prepared polymer sand stabilizer has good prevention and treatment effects on sand production problems caused in oilfield operation.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present invention disclosed in the embodiments of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention should be as defined in the claims.
Claims (3)
1. The preparation method of the polymer sand stabilizing agent is characterized by comprising the following steps:
step S1: dissolving a certain amount of 2-acrylamide-2-methylpropanesulfonic acid in water, regulating the pH value of the obtained 2-acrylamide-2-methylpropanesulfonic acid solution to 7-8, adding acrylamide, N-substituted water-soluble acrylamide and unsaturated tertiary amine monomers into the solution, controlling the total amount of reaction monomers consisting of the 2-acrylamide-2-methylpropanesulfonic acid, the acrylamide, the N-substituted water-soluble acrylamide and the unsaturated tertiary amine monomers to account for 18-30% of the solution in percentage by mass, and stirring for 10min at a rotating speed of 150r/min to completely dissolve;
wherein, the 2-acrylamide-2-methylpropanesulfonic acid in the reaction monomer accounts for 0.5-10% of the total weight in percentage by mass;
the unsaturated tertiary amine monomer is one or more of N- (3-dimethylaminopropyl) methacrylamide, dimethylaminoethyl methacrylate, N-dimethylacrylamide and N, N-dimethyl-2-methylpropionamide, and the unsaturated tertiary amine monomer in the reaction monomer accounts for 3-20% of the total weight in percentage by mass;
the N-substituted water-soluble acrylamide is one or more of N-ethyl acrylamide, N-hydroxyethyl acrylamide, N- (3-hydroxypropyl) acrylamide and N- (1, 1-dimethyl-3-oxo-butyl) acrylamide, and the N-substituted water-soluble acrylamide in the reaction monomers accounts for 1-15% of the total weight in percentage by mass;
step S2: maintaining stirring conditions, introducing nitrogen into the solution obtained in the step S1 to remove oxygen for 15-20 min, then adding an initiator, stopping stirring, and reacting for 4-8 h at 50-60 ℃ to obtain transparent gel;
step S3: and adding absolute ethyl alcohol into the transparent gel, precipitating, crushing and drying to obtain the polymer sand stabilizing agent.
2. The method for preparing the polymer sand stabilizing agent according to claim 1, wherein the method comprises the following steps: the initiator is azo initiator, and the dosage of the initiator is 0.3-0.8% of the total amount of the reaction monomers in percentage by mass.
3. A polymeric sand stabilizing agent prepared according to the method of claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310104863.2A CN115960309B (en) | 2023-02-13 | 2023-02-13 | Polymer sand stabilizing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310104863.2A CN115960309B (en) | 2023-02-13 | 2023-02-13 | Polymer sand stabilizing agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115960309A CN115960309A (en) | 2023-04-14 |
| CN115960309B true CN115960309B (en) | 2024-03-26 |
Family
ID=87358319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310104863.2A Active CN115960309B (en) | 2023-02-13 | 2023-02-13 | Polymer sand stabilizing agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115960309B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118329696A (en) * | 2024-04-22 | 2024-07-12 | 中国石油大学(华东) | Method for rapidly evaluating performance of sand inhibitor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277804A (en) * | 2014-10-23 | 2015-01-14 | 西南石油大学 | AM-DAAM-AMPS ternary polymer gel particle drive-adjusting reagent and synthesis method thereof |
| CN104861110A (en) * | 2015-05-22 | 2015-08-26 | 中国石油集团渤海钻探工程有限公司 | Anti-swelling and sand-inhibiting agent for high-permeability heavy oil reservoir and preparation method of anti-swelling and sand-inhibiting agent |
| CN105694837A (en) * | 2016-04-13 | 2016-06-22 | 中国石油大学(华东) | Polymer sand consolidating agent and preparation method thereof |
| CN105693925A (en) * | 2016-04-13 | 2016-06-22 | 中国石油大学(华东) | Sand prevention multi-branched polymer for oil-water well and preparation method of sand prevention multi-branched polymer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7117942B2 (en) * | 2004-06-29 | 2006-10-10 | Halliburton Energy Services, Inc. | Methods useful for controlling fluid loss during sand control operations |
-
2023
- 2023-02-13 CN CN202310104863.2A patent/CN115960309B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277804A (en) * | 2014-10-23 | 2015-01-14 | 西南石油大学 | AM-DAAM-AMPS ternary polymer gel particle drive-adjusting reagent and synthesis method thereof |
| CN104861110A (en) * | 2015-05-22 | 2015-08-26 | 中国石油集团渤海钻探工程有限公司 | Anti-swelling and sand-inhibiting agent for high-permeability heavy oil reservoir and preparation method of anti-swelling and sand-inhibiting agent |
| CN105694837A (en) * | 2016-04-13 | 2016-06-22 | 中国石油大学(华东) | Polymer sand consolidating agent and preparation method thereof |
| CN105693925A (en) * | 2016-04-13 | 2016-06-22 | 中国石油大学(华东) | Sand prevention multi-branched polymer for oil-water well and preparation method of sand prevention multi-branched polymer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115960309A (en) | 2023-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3434971A (en) | Composition and method for acidizing wells | |
| CA1181579A (en) | Enhanced oil recovery methods and systems | |
| WO2017113773A1 (en) | Hydrophobic associated polymer and preparation method therefor | |
| CN101353569B (en) | Controllable cross linked gel water blockage plugging material | |
| CN115960309B (en) | Polymer sand stabilizing agent and preparation method thereof | |
| CN103409118B (en) | A kind of synthetic method of water-base drilling fluid ultrahigh-temperature stablizer | |
| CN106947449B (en) | A kind of shielding diverting agent and preparation method thereof, application method | |
| CN111484578B (en) | Water-soluble AA-AM-NVP-NGD quadripolymer temporary plugging agent for fracturing and synthesis method thereof | |
| Xie et al. | Enhanced hydrophobically modified polyacrylamide gel for lost circulation treatment in high temperature drilling | |
| CN110734754A (en) | Plugging agent composition, plugging agent, preparation method and application thereof | |
| EP0399767A2 (en) | Interpolymers useful for treating subterranean formations | |
| US4487867A (en) | Water soluble anionic polymer composition and method for stimulating a subterranean formation | |
| CN110129013A (en) | Organic-inorganic composite GEL USED FOR PLUGGING WELL LOST CIRCULATION and the preparation method and application thereof | |
| CN104861953A (en) | Oil field fracture temporary plugging agent and preparation method thereof | |
| CN110938414B (en) | Temperature-resistant anti-collapse multi-polymer filtrate reducer and preparation method thereof | |
| CN110183579A (en) | A kind of temperature-sensitive hydrogel sealing agent and the preparation method and application thereof | |
| CA2236734A1 (en) | Polymeric compositions and method for use in low temperature well applications | |
| WO2020079123A1 (en) | Method of fracturing subterranean formations using aqueous solutions comprising hydrophobically associating copolymers | |
| CN114920877B (en) | Temporary plugging agent for oilfield fracturing and preparation method thereof | |
| CN114044851B (en) | Temporary plugging agent capable of realizing well zone seepage and preparation method thereof | |
| CN106467598B (en) | A kind of cross linked amphoteric polymeric ball of string and preparation method thereof | |
| US4487866A (en) | Method of improving the dispersibility of water soluble anionic polymers | |
| CN111876138B (en) | Carbon-based tackifier and preparation method and application thereof | |
| CN113444505B (en) | Self-adaptive plugging isolation liquid system and preparation method thereof | |
| CN114044850B (en) | High-strength temporary plugging agent capable of realizing well zone seepage and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |