CN113603241A - Barium sulfate scale inhibitor for oil field and preparation method thereof - Google Patents
Barium sulfate scale inhibitor for oil field and preparation method thereof Download PDFInfo
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- CN113603241A CN113603241A CN202111062248.7A CN202111062248A CN113603241A CN 113603241 A CN113603241 A CN 113603241A CN 202111062248 A CN202111062248 A CN 202111062248A CN 113603241 A CN113603241 A CN 113603241A
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- barium sulfate
- scale inhibitor
- sulfate scale
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- scale
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 title claims abstract description 86
- 239000002455 scale inhibitor Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229920001529 polyepoxysuccinic acid Polymers 0.000 claims abstract description 14
- JSYPRLVDJYQMAI-ODZAUARKSA-N (z)-but-2-enedioic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)\C=C/C(O)=O JSYPRLVDJYQMAI-ODZAUARKSA-N 0.000 claims abstract description 13
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims abstract description 13
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910000162 sodium phosphate Inorganic materials 0.000 claims abstract description 13
- 239000001488 sodium phosphate Substances 0.000 claims abstract description 13
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims abstract description 13
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 8
- 230000005764 inhibitory process Effects 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000008398 formation water Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052925 anhydrite Inorganic materials 0.000 description 3
- 229910052788 barium Inorganic materials 0.000 description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000012086 standard solution Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- AOJJSUZBOXZQNB-VTZDEGQISA-N 4'-epidoxorubicin Chemical compound O([C@H]1C[C@@](O)(CC=2C(O)=C3C(=O)C=4C=CC=C(C=4C(=O)C3=C(O)C=21)OC)C(=O)CO)[C@H]1C[C@H](N)[C@@H](O)[C@H](C)O1 AOJJSUZBOXZQNB-VTZDEGQISA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000668 effect on calcium Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- JPZROSNLRWHSQQ-UHFFFAOYSA-N furan-2,5-dione;prop-2-enoic acid Chemical compound OC(=O)C=C.O=C1OC(=O)C=C1 JPZROSNLRWHSQQ-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
Abstract
The invention discloses a barium sulfate scale inhibitor for oil fields and a preparation method thereof, wherein the barium sulfate scale inhibitor comprises the following components in percentage by mass: 34-69% of polyepoxysuccinic acid, 8-30% of maleic acid-acrylic acid copolymer and 16-50% of ethylene diamine tetramethylene sodium phosphate, wherein the total weight percentage of the components is 100%. The invention solves the problems of non-ideal scale inhibition effect and single scale inhibition effect of the existing barium sulfate scale inhibitor.
Description
Technical Field
The invention belongs to the technical field of fine chemical engineering of oil fields, relates to a barium sulfate scale inhibitor for oil fields, and further relates to a preparation method of the barium sulfate scale inhibitor for oil fields.
Background
In the oil and gas field development process, scale formation is a difficult problem encountered in the secondary oil recovery process, injected water is mostly oil field produced water after treatment, chemical incompatibility possibly exists with formation water, when the injected water enters a reservoir, incompatible ions are easy to react to cause scale formation, in addition, conditions such as temperature, pressure, pH value and the like of the injected water are changed, the inter-phase balance of the reservoir is damaged, complex chemical reaction is caused between the water and the reservoir, and scale formation can also be caused. The scaling process can occur in various places such as reservoirs, pipelines, gathering and transportation equipment and the like, the deposition of scale can cause the local corrosion of the pipelines and the equipment, the pipeline and the equipment are perforated and damaged in a short period, the oil and gas production can be influenced when the scaling is serious, even the oil and gas well is stopped and scrapped, and the oil field is greatly lost.
The scale produced by oil and gas fields is mainly CaCO3、CaSO4、BaSO4Scale, etc., wherein CaCO3、CaSO4The scale is easy to remove, and the scale formation problem can be effectively prevented by adding the scale inhibitor. BaSO4Because the solubility product is very small, the formed barium sulfate scale is compact and hard in crystallization, strong in adhesive force, difficult to remove by a common method once formed and very harmful, and the best method is to add a scale inhibitor for prevention. At present, some special scale inhibitors for barium and strontium on the market resist BaSO4The scale inhibition effect is not ideal, and the scale inhibition rate is about 70-85%. Therefore, the development of high-efficiency barium sulfate scale inhibitors is imminent.
Disclosure of Invention
The invention aims to provide a barium sulfate scale inhibitor for oil fields, which solves the problems of unsatisfactory scale inhibition effect and single scale inhibition effect of the existing barium sulfate scale inhibitor.
The invention also aims to provide a preparation method of the barium sulfate scale inhibitor for the oil field.
The technical scheme adopted by the invention is that the barium sulfate scale inhibitor for the oil field comprises 34-69% of polyepoxysuccinic acid, 8-30% of maleic acid-acrylic acid copolymer and 16-50% of ethylene diamine tetramethylene sodium phosphate, wherein the total weight percentage of the components is 100%.
The invention adopts another technical scheme that a preparation method of the barium sulfate scale inhibitor for the oil field is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 34-69% of polyepoxysuccinic acid, 8-30% of maleic acid-acrylic acid copolymer and 16-50% of ethylene diamine tetramethylene sodium phosphate, wherein the sum of the weight percentages of the components is 100%;
and 2, uniformly stirring the substances weighed in the step 1 to obtain the barium sulfate scale inhibitor.
The present invention is also characterized in that,
in the step 2, the stirring time is 10-20 min.
The barium sulfate scale inhibitor for the oil field has the beneficial effects of inhibiting BaSO4、CaSO4All have very excellent scale inhibition effect on single BaSO4And CaSO alone4The scale inhibition rate is over 90 percent; the preparation method is simple, easy to operate and easy to use.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The invention provides a barium sulfate scale inhibitor for oil fields, which comprises the following components in percentage by mass: 34-69% of polyepoxysuccinic acid, 8-30% of maleic acid-acrylic acid copolymer and 16-50% of ethylene diamine tetramethylene sodium phosphate, wherein the total weight percentage of the components is 100%.
The invention also provides a preparation method of the barium sulfate scale inhibitor for the oil field, which is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 34-69% of polyepoxysuccinic acid, 8-30% of maleic acid-acrylic acid copolymer and 16-50% of ethylene diamine tetramethylene sodium phosphate, wherein the sum of the weight percentages of the components is 100%;
and 2, stirring the substances weighed in the step 1 for 10-20 min until the substances are uniformly mixed to obtain the barium sulfate scale inhibitor.
The polyepoxysuccinic acid (PESA) in the barium sulfate scale inhibitor for the oil field is a phosphorus-free and non-nitrogen green environment-friendly multi-component scale and corrosion inhibitor by Shandong Youso chemical technology Limited company, has good scale and dispersion performance on calcium carbonate, calcium sulfate and barium sulfate in water, has a certain corrosion inhibition effect, good biodegradation performance and wide application range;
the maleic acid-acrylic acid copolymer (MA/AA) is a low molecular weight polyelectrolyte prepared by polymerizing maleic acid and acrylic acid according to a certain proportion by Shandong Youso chemical technology Co., Ltd, has strong dispersion effect on carbonate and the like, and has high thermal stability;
the ethylene diamine tetra methylene sodium phosphate (EDTMPS) is a neutral product, is a nitrogen-containing organic polyphosphonate, has a certain corrosion inhibition effect, can be dissociated into 8 positive and negative ions in an aqueous solution, and is chelated with a plurality of metal ions to form a plurality of macromolecular reticular complexes, and has good chemical stability and temperature resistance.
Example 1
A preparation method of a barium sulfate scale inhibitor for oil fields is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 34% of polyepoxysuccinic acid, 16% of maleic acid-acrylic acid copolymer and 50% of ethylene diamine tetramethylene sodium phosphate, wherein the sum of the weight percentages of the components is 100%;
and 2, stirring the substances weighed in the step 1 for 20min until the substances are uniformly mixed to obtain the barium sulfate scale inhibitor.
Example 2
A preparation method of a barium sulfate scale inhibitor for oil fields is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 35% of polyepoxysuccinic acid, 30% of maleic acid-acrylic acid copolymer and 35% of ethylene diamine tetramethylene sodium phosphate, wherein the sum of the weight percentages of the components is 100%;
and 2, stirring the substances weighed in the step 1 for 20min until the substances are uniformly mixed to obtain the barium sulfate scale inhibitor.
Example 3
A preparation method of a barium sulfate scale inhibitor for oil fields is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 60% of polyepoxysuccinic acid, 10% of maleic acid-acrylic acid copolymer and 30% of ethylene diamine tetramethylene sodium phosphate, wherein the sum of the weight percentages of the components is 100%;
and 2, stirring the substances weighed in the step 1 for 15min until the substances are uniformly mixed to obtain the barium sulfate scale inhibitor.
Example 4
A preparation method of a barium sulfate scale inhibitor for oil fields is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 66% of polyepoxysuccinic acid, 16% of maleic acid-acrylic acid copolymer and 16% of ethylene diamine tetramethylene sodium phosphate, wherein the sum of the weight percentages of the components is 100%;
and 2, stirring the substances weighed in the step 1 for 20min until the substances are uniformly mixed to obtain the barium sulfate scale inhibitor.
Example 5
A preparation method of a barium sulfate scale inhibitor for oil fields is implemented according to the following steps:
step 1, weighing the following components in percentage by mass: 69% of polyepoxysuccinic acid, 8% of maleic acid-acrylic acid copolymer and 23% of ethylene diamine tetramethylene sodium phosphate, wherein the sum of the weight percentages of the components is 100%;
and 2, stirring the substances weighed in the step 1 for 10min until the substances are uniformly mixed to obtain the barium sulfate scale inhibitor.
The barium sulfate scale inhibitor for the oil field is prepared into 1g/L scale inhibitor solution by deionized water, and the performance of the barium sulfate scale inhibitor is evaluated by adopting a static scale inhibition method according to the petroleum and natural gas industry standard evaluation method for the performance of the scale inhibitor for the oil field (SY/T5673. sup. 1993), wherein the specific operation method comprises the following steps:
(1) preparing simulated formation water A and simulated injection water B, wherein the simulated formation water A comprises 75g/L of NaCl and BaCl2·2H2O6.6 g/L, simulated injection waterThe component B is NaCl 75g/L, Na2SO4 8.00g/L；
(2) 150mL of distilled water is taken in a 250mL volumetric flask, and a certain volume of simulated formation water A (enabling Ba to be added) is accurately added2+185.5mg/L), accurately adding a certain volume of scale inhibitor solution (to make the content of the scale inhibitor be 60mg/L), standing for 10min, and adding a certain volume of simulated injection water B (to make SO) while shaking4 2-The content is 270.5mg/L), the volume is determined, the solution is shaken up, the solution is transferred into a 250mL conical flask with a plug and a ground opening, the bottle plug is covered, the conical flask is placed into a 70 ℃ water bath kettle, the temperature is kept for half an hour, after the temperature is balanced, the bottle plug is opened to release air, then the bottle plug is covered, and the conical flask is placed in a 70 ℃ water bath for 16 hours;
(3) in the experiment, blank 1 is carried out simultaneously without adding scale inhibitor and with the same other steps;
(4) in the experiment, a blank 2 with the same steps is carried out simultaneously without adding a scale inhibitor and simulating injected water B;
(5) standing in 70 deg.C water bath for 16h, taking out ground conical flask, standing to room temperature, accurately transferring supernatant 25mL into conical flask, titrating Ba in solution by EDTA method2+And (4) content.
(6) Calculation of Scale inhibition Rate
The scale inhibition rate performance is characterized by scale inhibition rate, the larger the percentage value is, the better the scale inhibition performance is, and the scale inhibition rate E is calculated according to the following formula:
E＝(V0-V1)/(V2-V1)×100％
in the formula: v0Titrating Ba in the solution after adding the scale inhibitor2+The volume of EDTA standard solution required for concentration, mL;
V1titration of Ba in blank 1 solution2+The volume of EDTA standard solution required for concentration, mL;
V2titration of Ba in blank 2 solution2+The volume of EDTA standard solution required for concentration, mL;
for the barium sulfate scale inhibitor in the formula and the barium sulfate (BaSO) on the market4) The special scale inhibitor is compared by experimental test data which are shown in a table 1:
TABLE 1 comparison of technical parameters for antisludging agents
| Product(s) | Formulation/manufacturer | pH value | Density g/cm3 | Solid content% | The scale inhibition rate% |
| Example 1 | / | 4.0 | 1.309 | ≥34.0 | 90.32 |
| Example 2 | / | 2.5 | 1.291 | ≥37.0 | 94.68 |
| Example 3 | / | 4.5 | 1.351 | ≥36.0 | 98.84 |
| Example 4 | / | 4.0 | 1.323 | ≥37.0 | 98.16 |
| Example 5 | / | 5.0 | 1.319 | ≥34.0 | 97.23 |
| SN-1 | Sailanchui chemical industry | 1.0 | 1.109 | 16.4 | 73.49 |
| HY-2 | Shandong Huayou water treatment | 1.5 | 1.181 | 34.9 | 78.88 |
In addition, calcium sulfate (CaSO) of examples 1, 2, 3, 4 and 5 was also added4) Evaluation of scale inhibition effect of (1) to (5) calcium sulfate (CaSO) was measured4) The scale inhibition rates of (A) are 99.18%, 99.49%, 91.73%, 90.42% and 91.58%, respectively. By contrast, the sulfuric acid obtained by the inventionThe technical parameters of the barium scale inhibitor are superior to those of the common barium sulfate special scale inhibitor on the market at present, and the barium scale inhibitor also has good scale inhibition effect on calcium sulfate.
Claims (3)
1. The barium sulfate scale inhibitor for the oil field is characterized by comprising the following components in percentage by mass: 34-69% of polyepoxysuccinic acid, 8-30% of maleic acid-acrylic acid copolymer and 16-50% of ethylene diamine tetramethylene sodium phosphate, wherein the total weight percentage of the components is 100%.
2. A preparation method of a barium sulfate scale inhibitor for oil fields is characterized by comprising the following steps:
step 1, weighing the following components in percentage by mass: 34-69% of polyepoxysuccinic acid, 8-30% of maleic acid-acrylic acid copolymer and 16-50% of ethylene diamine tetramethylene sodium phosphate, wherein the sum of the weight percentages of the components is 100%;
and 2, uniformly stirring the substances weighed in the step 1 to obtain the barium sulfate scale inhibitor.
3. The preparation method of the barium sulfate scale inhibitor for the oil field according to claim 2, wherein in the step 2, the stirring time is 10-20 min.
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| CN202111062248.7A CN113603241A (en) | 2021-09-10 | 2021-09-10 | Barium sulfate scale inhibitor for oil field and preparation method thereof |
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| CN202111062248.7A CN113603241A (en) | 2021-09-10 | 2021-09-10 | Barium sulfate scale inhibitor for oil field and preparation method thereof |
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| CN113603241A true CN113603241A (en) | 2021-11-05 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508492A (en) * | 2009-03-10 | 2009-08-19 | 同济大学 | Environment-friendly composite dirt dispersion agent for oil-field flooding treatment |
| US20100292106A1 (en) * | 2007-11-13 | 2010-11-18 | Akzo Nobel N.V. | Methods of minimizing sulfate scale in oil field |
| CN103043807A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Barium strontium sulphate scale inhibitor for oil field and application thereof |
| CN112079455A (en) * | 2020-08-21 | 2020-12-15 | 中国石油天然气股份有限公司 | Oilfield chemical scale inhibitor and preparation method and application thereof |
-
2021
- 2021-09-10 CN CN202111062248.7A patent/CN113603241A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100292106A1 (en) * | 2007-11-13 | 2010-11-18 | Akzo Nobel N.V. | Methods of minimizing sulfate scale in oil field |
| CN101508492A (en) * | 2009-03-10 | 2009-08-19 | 同济大学 | Environment-friendly composite dirt dispersion agent for oil-field flooding treatment |
| CN103043807A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Barium strontium sulphate scale inhibitor for oil field and application thereof |
| CN112079455A (en) * | 2020-08-21 | 2020-12-15 | 中国石油天然气股份有限公司 | Oilfield chemical scale inhibitor and preparation method and application thereof |
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Application publication date: 20211105 |