CN114316282A - Salt-resistant filtrate reducer emulsion polymer for drilling fluid and preparation method thereof - Google Patents
Salt-resistant filtrate reducer emulsion polymer for drilling fluid and preparation method thereof Download PDFInfo
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- CN114316282A CN114316282A CN202210067583.4A CN202210067583A CN114316282A CN 114316282 A CN114316282 A CN 114316282A CN 202210067583 A CN202210067583 A CN 202210067583A CN 114316282 A CN114316282 A CN 114316282A
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- China
- Prior art keywords
- salt
- drilling fluid
- emulsion polymer
- filtrate reducer
- reaction kettle
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- 238000005553 drilling Methods 0.000 title claims abstract description 25
- 239000012530 fluid Substances 0.000 title claims abstract description 25
- 150000003839 salts Chemical class 0.000 title claims abstract description 25
- 239000004908 Emulsion polymer Substances 0.000 title claims abstract description 19
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 18
- 239000000706 filtrate Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 13
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 239000000047 product Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920002972 Acrylic fiber Polymers 0.000 claims abstract description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 4
- 239000004094 surface-active agent Substances 0.000 claims abstract description 4
- 239000000654 additive Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims 1
- 239000004927 clay Substances 0.000 abstract description 9
- 239000011575 calcium Substances 0.000 abstract description 8
- 229910052791 calcium Inorganic materials 0.000 abstract description 8
- 230000003628 erosive effect Effects 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 5
- 229920000642 polymer Polymers 0.000 abstract description 4
- 150000001768 cations Chemical class 0.000 abstract description 3
- 238000003795 desorption Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000036571 hydration Effects 0.000 abstract description 3
- 238000006703 hydration reaction Methods 0.000 abstract description 3
- 230000009545 invasion Effects 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract description 3
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 14
- 239000002689 soil Substances 0.000 description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 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 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000012263 liquid product Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a salt-resistant filtrate reducer emulsion polymer for drilling fluid and a preparation method thereof, wherein the salt-resistant filtrate reducer emulsion polymer comprises the following steps: s1, adding the acrylic fibers, phenol and water which are accurately weighed into a reaction kettle, stirring at constant temperature, and reacting for 30 minutes; s2, adding potassium hydroxide and acrylic acid into the reaction kettle to react for 1 hour; s3, adding a surfactant and polyacrylamide to react for 2 hours; and S4, cooling and filtering the reaction product in the reaction kettle to obtain the product. The salt-resistant filtrate reducer emulsion polymer for the drilling fluid prepared by the method has low viscosity and temperature resistance up to 240 ℃, and the main chain of the polymer is added with a benzene ring structure, so that the rigidity of molecules is enhanced, and the high-temperature desorption effect of the molecules caused by thermal motion is weakened; the rigid group promotes a hydration film formed by polymer molecules on the clay surface to be more compact and thick, and can effectively block the invasion of metal cations, thereby protecting clay particles in a high-salt and high-calcium environment, improving the salt erosion and calcium erosion resistance of the clay particles, and effectively reducing the filtration loss of the drilling fluid.
Description
Technical Field
The invention relates to the technical field of oilfield chemical engineering, in particular to a salt-resistant filtrate reducer emulsion polymer for drilling fluid and a preparation method thereof.
Background
In recent years, polymer-type fluid loss additives have gradually become main research objects in the field of drilling fluid treatment agents due to good temperature resistance, salt resistance and calcium resistance, the product varieties are gradually increased, and various new products appear, and particularly, the related research on the variety of the polymer-type fluid loss additives synthesized by using 2-acrylamide-2-methylpropanesulfonic Acid (AMPS) as a main monomer is the most extensive and deep. However, the main structure of these treating agents is not changed, but some groups in the side chains are changed, the molecular weight is larger, the viscosity is high, and further improvement of the overall performance (mainly referring to low viscosity, temperature resistance, salt resistance and calcium resistance) of the treating agent is limited to a certain extent, so that the water solubility of macromolecular solids of the product is lower than that of liquid products, and the viscosity of the product is higher than that of the liquid products.
Disclosure of Invention
The invention aims to provide a salt-resistant filtrate reducer emulsion polymer for drilling fluid and a preparation method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a preparation method of a salt-resistant filtrate reducer emulsion polymer for drilling fluid, which comprises the following steps:
s1, adding 50 parts of acrylic fibers, 20 parts of phenol and 150 parts of water which are accurately weighed into a reaction kettle, heating to 90 ℃, stirring at constant temperature and reacting for 30 minutes;
s2, adding 50 parts of potassium hydroxide and 15 parts of acrylic acid into a reaction kettle, and reacting at a temperature of 130-150 ℃ for 1 hour;
s3, sequentially adding 10 parts of surfactant and 15 parts of polyacrylamide for reaction for 2 hours;
s4, cooling and filtering the product obtained after the reaction in the reaction kettle to obtain the salt-resistant filtrate reducer emulsion polymer for drilling fluid.
The invention also discloses the salt-resistant filtrate reducer emulsion polymer for the drilling fluid prepared by the method.
The salt-resistant filtrate reducer emulsion polymer for the drilling fluid prepared by the method has low viscosity, the temperature resistance can reach 240 ℃, the benzene ring structure is added to the main chain, the rigidity of molecules is enhanced, and the high-temperature desorption effect of the molecules caused by thermal motion is weakened. In addition, the rigid group promotes a hydration film formed by polymer molecules on the clay surface to be more compact and thick, and can effectively block the invasion of metal cations, thereby protecting clay particles in a high-salt and high-calcium environment, improving the salt erosion resistance and calcium erosion resistance of the clay particles, and effectively reducing the filtration loss of the drilling fluid.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of a salt-resistant filtrate reducer emulsion polymer for drilling fluid comprises the following steps:
s1, adding 50kg of accurately weighed acrylic fibers, 20kg of phenol and 150kg of water into a reaction kettle, heating to 90 ℃, stirring at constant temperature and reacting for 30 minutes;
s2, adding 50kg of potassium hydroxide and 15kg of acrylic acid into a reaction kettle, and controlling the temperature at 130-150 ℃ for reaction for 1 hour;
s3, sequentially adding 10kg of surfactant and 15kg of polyacrylamide to react for 2 hours;
s4, cooling and filtering the product obtained after the reaction in the reaction kettle to obtain the salt-resistant filtrate reducer emulsion polymer for drilling fluid.
And (3) performance testing:
technical indexes of salt-resistant filtrate reducer emulsion polymer for drilling fluid
The technical index should meet the specification of the table
Second, Experimental methods
1.1 instrumentation
a) A high-speed stirrer: GJ-I type or similar products, the rotating speed is 11000 +/-300 r/min;
b) the aging tank for the drilling fluid comprises: 500ml wide-mouth glass bottle;
c) a drying oven;
d) a balance, wherein the scale division level is 0.01 g;
e) the volume of the filtration loss instrument is 300ml to 400ml, and the filtration area is 4560mm +/-60 mm;
4.2 reagents or materials
a) Distilling water in three stages;
b) sodium soil for drilling fluid tests;
c) sodium chloride
2.1 determination of appearance
Visual inspection was performed under natural light.
3.1 drilling fluid Performance testing
According to a 4% saline solution: evaluation soil: sodium bicarbonate 350: 35: preparing base slurry according to the proportion of 1.0, stirring at high speed for 20min, and measuring the filtration loss of the base slurry, wherein the filtration loss value is within the range of (90 +/-10) ml, otherwise, the addition of the soil is adjusted.
And (3) taking 350mL of prepared base slurry and adding 7.0g of sample into the prepared base slurry respectively, stirring at a high speed for 20min, sealing one of the base slurry at room temperature for 16h, putting the other of the base slurry into a high-temperature tank, hot rolling at 150 ℃ for 16h, cooling and taking out. Stirring the slurry in two parts at high speed for 20min, and measuring the fluid loss before and after high temperature (0.7mpa/30 min).
4.6.2 saturated salt water test
According to the weight percentage of saturated saline water: evaluation soil: sodium bicarbonate 350: 35: preparing base slurry according to the proportion of 1.0, stirring at high speed for 20min, and measuring the filtration loss of the base slurry, wherein the filtration loss value is within the range of (90 +/-10) ml, otherwise, the addition of the soil is adjusted.
And (3) taking 350mL of prepared base slurry and adding 7.0g of sample into the prepared base slurry respectively, stirring at a high speed for 20min, sealing one of the base slurry at room temperature for 16h, putting the other of the base slurry into a high-temperature tank, hot rolling at 150 ℃ for 16h, cooling and taking out. Stirring the slurry in two parts at high speed for 20min, and measuring the fluid loss before and after high temperature (0.7mpa/30 min).
Thirdly, experimental data and experimental conclusions:
the salt-resistant filtrate reducer emulsion polymer for drilling fluid prepared in the embodiment 1 can meet the technical index requirements through indoor experiments.
The adjustment and the proof of indoor experiments prove that the salt-resistant filtrate reducer emulsion polymer for the drilling fluid prepared by the method has low viscosity and temperature resistance up to 240 ℃, the benzene ring structure is added to the main chain, the rigidity of molecules is enhanced, and the high-temperature desorption effect of the molecules caused by thermal motion is weakened. In addition, the rigid group promotes a hydration film formed by polymer molecules on the clay surface to be more compact and thick, and can effectively block the invasion of metal cations, thereby protecting clay particles in a high-salt and high-calcium environment, improving the salt erosion resistance and calcium erosion resistance of the clay particles, and effectively reducing the filtration loss of the drilling fluid.
Claims (2)
1. A preparation method of a salt-resistant filtrate reducer emulsion polymer for drilling fluid is characterized by comprising the following steps:
s1, adding 50 parts of acrylic fibers, 20 parts of phenol and 150 parts of water which are accurately weighed into a reaction kettle, heating to 90 ℃, stirring at constant temperature and reacting for 30 minutes;
s2, adding 50 parts of potassium hydroxide and 15 parts of acrylic acid into a reaction kettle, and reacting at a temperature of 130-150 ℃ for 1 hour;
s3, sequentially adding 10 parts of surfactant and 15 parts of polyacrylamide for reaction for 2 hours;
s4, cooling and filtering the product obtained after the reaction in the reaction kettle to obtain the salt-resistant filtrate reducer emulsion polymer for drilling fluid.
2. A salt-resistant fluid loss additive emulsion polymer for drilling fluids, prepared by the method of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210067583.4A CN114316282A (en) | 2022-01-20 | 2022-01-20 | Salt-resistant filtrate reducer emulsion polymer for drilling fluid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210067583.4A CN114316282A (en) | 2022-01-20 | 2022-01-20 | Salt-resistant filtrate reducer emulsion polymer for drilling fluid and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114316282A true CN114316282A (en) | 2022-04-12 |
Family
ID=81028405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210067583.4A Pending CN114316282A (en) | 2022-01-20 | 2022-01-20 | Salt-resistant filtrate reducer emulsion polymer for drilling fluid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114316282A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2005110769A (en) * | 2005-03-01 | 2006-10-20 | Дочерн Компани "Укргазвыдобуванн " Национальной Акционерной Компании "Нафтогаз Украины" (UA) | BIOPOLYMERIC DRILLING MILL |
| CN102757772A (en) * | 2012-07-18 | 2012-10-31 | 天津市静海县桂春工贸有限公司 | Super-high temperature resisting and salt resisting filtrate loss reducer for drilling fluid and preparation method thereof |
| CN104371675A (en) * | 2013-08-12 | 2015-02-25 | 中国石油化工股份有限公司 | Fluid loss additive for drilling fluid |
| CN104559960A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Comb type polymer emulsion applied to drilling fluid and preparation method of comb type polymer emulsion |
| CN104910330A (en) * | 2015-06-16 | 2015-09-16 | 北京中科天启油气技术有限公司 | High-density fluid loss additive for drilling fluids and preparation method thereof |
-
2022
- 2022-01-20 CN CN202210067583.4A patent/CN114316282A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2005110769A (en) * | 2005-03-01 | 2006-10-20 | Дочерн Компани "Укргазвыдобуванн " Национальной Акционерной Компании "Нафтогаз Украины" (UA) | BIOPOLYMERIC DRILLING MILL |
| CN102757772A (en) * | 2012-07-18 | 2012-10-31 | 天津市静海县桂春工贸有限公司 | Super-high temperature resisting and salt resisting filtrate loss reducer for drilling fluid and preparation method thereof |
| CN104371675A (en) * | 2013-08-12 | 2015-02-25 | 中国石油化工股份有限公司 | Fluid loss additive for drilling fluid |
| CN104559960A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Comb type polymer emulsion applied to drilling fluid and preparation method of comb type polymer emulsion |
| CN104910330A (en) * | 2015-06-16 | 2015-09-16 | 北京中科天启油气技术有限公司 | High-density fluid loss additive for drilling fluids and preparation method thereof |
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| PB01 | Publication | ||
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Application publication date: 20220412 |
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| RJ01 | Rejection of invention patent application after publication |