WO2023023506A1 - Composition and method for inhibition of scaling in high- salinity, temperature, and pressure applications - Google Patents
Composition and method for inhibition of scaling in high- salinity, temperature, and pressure applications Download PDFInfo
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- WO2023023506A1 WO2023023506A1 PCT/US2022/075005 US2022075005W WO2023023506A1 WO 2023023506 A1 WO2023023506 A1 WO 2023023506A1 US 2022075005 W US2022075005 W US 2022075005W WO 2023023506 A1 WO2023023506 A1 WO 2023023506A1
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- 239000000203 mixture Substances 0.000 title claims abstract description 141
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000005764 inhibitory process Effects 0.000 title description 6
- 230000002195 synergetic effect Effects 0.000 claims abstract description 62
- 239000002455 scale inhibitor Substances 0.000 claims abstract description 55
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 claims abstract description 25
- 229920000642 polymer Polymers 0.000 claims abstract description 23
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 22
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 5
- 150000003839 salts Chemical class 0.000 claims description 34
- 239000002253 acid Substances 0.000 claims description 30
- 229920001577 copolymer Polymers 0.000 claims description 14
- 150000007529 inorganic bases Chemical class 0.000 claims description 13
- 239000012267 brine Substances 0.000 claims description 12
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 12
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 8
- 239000011575 calcium Substances 0.000 claims description 7
- 239000002738 chelating agent Substances 0.000 claims description 7
- 229930195733 hydrocarbon Natural products 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- -1 methylene phosphonic acid Chemical compound 0.000 claims description 6
- 229960003330 pentetic acid Drugs 0.000 claims description 6
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 claims description 5
- 125000001841 imino group Chemical group [H]N=* 0.000 claims description 5
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 claims description 5
- 229920001897 terpolymer Polymers 0.000 claims description 5
- 229910021532 Calcite Inorganic materials 0.000 claims description 4
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 229910052601 baryte Inorganic materials 0.000 claims description 4
- 239000010428 baryte Substances 0.000 claims description 4
- 229910052923 celestite Inorganic materials 0.000 claims description 4
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 4
- 238000005065 mining Methods 0.000 claims description 4
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 3
- XQRLCLUYWUNEEH-UHFFFAOYSA-L diphosphonate(2-) Chemical compound [O-]P(=O)OP([O-])=O XQRLCLUYWUNEEH-UHFFFAOYSA-L 0.000 claims description 3
- RAQDACVRFCEPDA-UHFFFAOYSA-L ferrous carbonate Chemical compound [Fe+2].[O-]C([O-])=O RAQDACVRFCEPDA-UHFFFAOYSA-L 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 35
- 238000005755 formation reaction Methods 0.000 description 20
- 238000000151 deposition Methods 0.000 description 9
- 230000008021 deposition Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 description 8
- 239000011707 mineral Substances 0.000 description 8
- 238000011282 treatment Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 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
- 238000009472 formulation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- URDCARMUOSMFFI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid Chemical compound OCCN(CC(O)=O)CCN(CC(O)=O)CC(O)=O URDCARMUOSMFFI-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010796 Steam-assisted gravity drainage Methods 0.000 description 2
- 239000005083 Zinc sulfide Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000001728 nano-filtration Methods 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000003966 growth inhibitor Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- GNVXPFBEZCSHQZ-UHFFFAOYSA-N iron(2+);sulfide Chemical compound [S-2].[Fe+2] GNVXPFBEZCSHQZ-UHFFFAOYSA-N 0.000 description 1
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003860 storage Methods 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
- 239000000725 suspension Substances 0.000 description 1
- 239000011885 synergistic combination Substances 0.000 description 1
- UZVUJVFQFNHRSY-OUTKXMMCSA-J tetrasodium;(2s)-2-[bis(carboxylatomethyl)amino]pentanedioate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CC[C@@H](C([O-])=O)N(CC([O-])=O)CC([O-])=O UZVUJVFQFNHRSY-OUTKXMMCSA-J 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
Definitions
- the disclosed technology provides treatment compositions and methods to inhibit the formation and deposition of mineral scales, and more specifically, treatment compositions and methods to inhibit the formation and deposition of mineral scales in high salinity, high temperature, and high-pressure environments.
- inorganic i.e. sparingly soluble salts from aqueous brines during geothermal energy production
- Scale deposition damages the downhole equipment of geothermal wells and moreover decreases in flow rate leads to a loss in production.
- various sulfide-based scales for example, metal sulfides such as iron sulfide (FeS), zinc sulfide (ZnS) and lead sulfide (PbS), can form problematic depositions.
- FeS iron sulfide
- ZnS zinc sulfide
- PbS lead sulfide
- Pre-salt describes where the reservoir rock is located below a layer of salt, which can exceed 2,000m in thickness in some areas. Considering that the water depth can reach over 2,000m, the pre-salt reservoir can be located over 7,000m depth.
- the disclosed technology is also applicable for scale inhibition in highly acidic aqueous systems like those found in mining applications, where process waters have high concentrations of hardness, sulfates, chlorides, organics, and salts.
- the current disclosed synergistic composition helps to treat these processes for the inhibition of and/or removal of scale deposits, such as calcium sulfate scale/calcium carbonate, by adding the scale control agent to a highly acidic system.
- NF Nanofiltration
- RO Reverse Osmosis
- ED Electrodialysis
- MD Membrane Distillation
- the disclosed technology provides for synergistic anti-scaling composition.
- the anti-scaling composition comprises a scale inhibitor, and a compatibility aid.
- the scale inhibitor comprises an organophosphoric acid, organophosphonic acid, a phosphonate-based compound, polymeric phosphonate, polycarboxylic acids, a carboxylic sulphonated copolymer, and/or a carboxylic sulphonated terpolymer.
- the scale inhibitor comprises an organopolyphosphorous acid, an organopolyphosphonic acid, an organopolyphosphoric acid, and/or an organopolyphosphorous acid.
- the scale inhibitor comprises a diphosphonate, a triphosphonate, a tetraphosphonate, a pentaphosphonate, and/or a hexaphosphonate or derivatives thereof.
- the scale inhibitor comprises a polyamino polyether methylene phosphonic acid, a (hydroxyethyl)imino]bis(methylene)]-bisphosphonic acid, or a combination thereof. In some embodiments, the scale inhibitor comprises a sulphonated ter-polymer, or a carboxylic-sulfonated copolymer.
- the compatibility aid comprises a chelating agent, or salt thereof.
- the compatibility aid comprises an aminopoly carboxylic acid, or a salt thereof.
- the compatibility aid comprises a diethylenetriaminepentaacetic acid, or a salt thereof.
- the synergistic anti-scaling composition further comprises an inorganic base.
- the inorganic base is a hydroxide base.
- a synergistic antiscaling composition comprises a scale inhibitor combination, the combination comprising (i) a polymer composition, and (ii) a phosphonate composition.
- the scale inhibitor comprises a sulphonated ter-polymer, or a carboxylic-sulfonated copolymer.
- the sulphonated ter-polymer is acrylic acid based or maleic acid based.
- the phosphonate composition comprises hydroxy ethyl)imino]bis(methylene)]-bisphosphonic acid.
- the ratio of polymer composition to phosphonate composition is in the range of about 1:50 to about 50:1. In some embodiments, the ratio of polymer composition to phosphonate composition is in the range of about 1:10 to about 9:1. It should be understood that this ratio varies based on the type of scales present.
- a synergistic antiscaling composition comprises a scale inhibitor combination, the combination comprising (i) a polymer composition; and (ii) a phosphonate composition, and a compatibility aid.
- the scale inhibitor comprises a sulphonated ter-polymer, or a carboxylic-sulfonated copolymer.
- the ratio of polymer composition to phosphonate composition is in the range of about 1:50 to about 50:1. In some embodiments, the ratio of polymer composition to phosphonate composition is in the range of about 1 : 10 to about 9: 1.
- the compatibility aid comprises (i) a chelating agent, or salt thereof, (ii) an aminopolycarboxylic acid, or a salt thereof, or (iii) a diethylenetriaminepentaacetic acid, or a salt thereof.
- the synergistic anti-scaling composition exhibits a coil ID of about 0.5-0.8mm. In some embodiments, the synergistic antiscaling composition exhibits a coil ID of about 0.5-0.55mm.
- a method for inhibiting scale formation comprising providing a synergistic antiscaling composition, the composition comprising: a scale inhibitor; and a compatibility aid; and providing the synergistic anti-scaling composition to an aqueous scaling environment.
- the scale inhibitor comprises an organophosphoric acid, a phosphonic acid, a phosphonate-based compound, or a carboxylic sulphonated copolymer.
- the compatibility aid comprises a chelating polyacid or salt thereof.
- the aqueous scaling environment is a hydrocarbon producing well, a geothermal well, mining, or membrane applications. In some embodiments, about 10-500 ppm of the anti-scaling composition is added to the aqueous scaling environment. In some embodiments, providing the scale inhibitor composition with the aqueous scaling environment occurs at a temperature from about 20 °C to about 250 °C. In some embodiments, the aqueous scaling environment comprises a pressure of about 15 psi to 5000 psi.
- the aqueous scaling environment comprises a calcium level of about 100 ppm to about 20,000 ppm. In some embodiments, the aqueous scaling environment comprises a salinity level of about 100 ppm to about 3,00,000 ppm. In some embodiments, the aqueous scaling environment comprises a temperature up to about 150°C, and a salinity level up to about 300,000 ppm.
- the aqueous scaling environment comprises calcite, calcium sulfate, celestite, barite, iron carbonate, and/or combinations thereof.
- the aqueous scaling environment comprises a salinity brine having a temperature of about 0°C to about 150°C. In some embodiments, the aqueous scaling environment prone to scaling has a saturation index from about 1.5 SI to about 3.0 SI. In some embodiments, the anti-scaling composition further comprises an inorganic base.
- the ratio of scale inhibitor to compatibility aid to inorganic base is about 2: 1:1 to about 50:45:5.
- the scale inhibitor comprises about 2% to about 75% by weight of the composition. In some embodiments, the compatibility aid comprises about 0.5% to about 45% by weight of the composition.
- FIG. 1 is a table of results of illustrative embodiments of the disclosed technology
- FIGS. 2A-2B provide experimental results of an illustrative embodiment of the disclosed technology
- FIGS. 3A-3B provide experimental results of an illustrative embodiment of the disclosed technology
- FIGS. 4A-4B provide experimental results of an illustrative embodiment of the disclosed technology
- FIG. 5 is a graph of experimental results of an illustrative embodiment of the disclosed technology
- FIG. 6 is a graph of experimental results of an illustrative embodiment of the disclosed technology
- FIG. 7 provides experimental results of an illustrative embodiment of the disclosed technology
- FIGS. 8A-8C provide graphs of experimental results of an illustrative embodiment of the disclosed technology
- FIG. 9 provides experimental results of an illustrative embodiment of the disclosed technology.
- FIG. 10 provides experimental results of an illustrative embodiment of the disclosed technology. DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
- the disclosed technology generally provides treatment compositions and methods to inhibit the formation and deposition of mineral scales, and more specifically, treatment compositions and methods to inhibit the formation and deposition of mineral scales in high temperature and high-pressure environments.
- the anti-scaling composition as described herein provides for the inhibition and prevention of scale formation of systems operating in a high pressure and a high concentration of dissolved salts.
- scale formation may include, but is not limited to, scaling that is subject to the deposition of multiple scales, (e.g. silica, calcium sulfate, calcite, barite, and celestite scales).
- the anti-scaling composition as described herein provides a synergistic effect, where the anti-scaling composition removes already formed or difficult to remove scaling, and in some cases, prevents new scaling present in systems exposed to high concentrations of brine under conditions of high pressure and temperatures (which alters the scaling potential of multiple scales). It was shown that the anti-scaling compositions as described herein significantly aided in achieving a passing compatibility requirement rating, as well as increased anti-scaling performance due to the synergy of components present.
- TDS total dissolved solids
- SAGD steam-assisted gravity drainage
- the present technology provides for a synergistic anti-scaling composition, wherein the composition comprises a scale inhibitor; and a compatibility aid.
- the synergistic anti-scaling composition comprises a scale inhibitor.
- the scale inhibitor as described herein acts as a nucleation inhibitor, as well as a crystal growth inhibitor. It is believed that the anti-scaling composition provides a synergistic effect due to the specific combination of a nucleation inhibitor and a crystal growth/dispersant mechanism provided by the scale inhibitor.
- the scale inhibitor comprises an organophosphoric acid, organophosphonic acid, a phosphonate-based compound, polymeric phosphonate, polycarboxylic acids, a carboxylic sulphonated copolymer, and/or a carboxylic sulphonated terpolymer.
- the scale inhibitor comprises an organopolyphosphorous acid, an organopolyphosphonic acid, an organopolyphosphoric acid, and/or an organopolyphosphorous acid.
- the scale inhibitor comprises a diphosphonate, a triphosphonate, a tetraphosphonate, a pentaphosphonate, and/or a hexaphosphonate or derivatives thereof. It is believed that the molecular weight and distance between the phosphonates aid in the performance of the scale inhibitor.
- the scale inhibitor comprises a polyamino polyether methylene phosphonic acid, a (hydroxyethyl)imino]bis(methylene)]- bisphosphonic acid, or a combination thereof. It is believed that ethylene oxide and hydroxy ethyl amino groups contribute to the synergy of the present technology by aiding in compatibility.
- the scale inhibitor comprises a sulphonated ter-polymer, or a carboxylic-sulfonated copolymer.
- the terpolymer acts as a crystal growth modifier.
- the synergistic anti-scaling composition further comprises a compatibility aid.
- the compatibility aid as described herein helps to chelate with salts and keeps them in dissolved form.
- the term “compatibility aid” is meant to describe a chemical additive that provides stability and performance to the formulation at the expected pressure and temperature ranges.
- brine compatibility i.e. compatibility with high TDS/Ca/Mg brines
- brine compatibility i.e. compatibility with high TDS/Ca/Mg brines
- brine compatibility i.e. compatibility with high TDS/Ca/Mg brines
- brine compatibility i.e. compatibility with high TDS/Ca/Mg brines
- brine compatibility i.e. compatibility with high TDS/Ca/Mg brines
- brine compatibility i.e. compatibility with high TDS/Ca/Mg brines
- brine compatibility i.e. compatibility with high TDS/
- the compatibility aid comprises a chelating agent, or salt thereof.
- the chelating agent comprises ethylenediaminetetraacetic acid (EDTA), diethylene triamine penta acetic acid (DTP A), or citric acid.
- EDTA ethylenediaminetetraacetic acid
- DTP A diethylene triamine penta acetic acid
- citric acid ethylenediaminetetraacetic acid
- the chelating agent as described herein will bind with metal ions and will keep the salts in solution.
- the compatibility aid comprises an aminopoly carboxylic acid, or a salt thereof. In some embodiments, the compatibility aid comprises a diethylenetriaminepentaacetic acid, or a salt thereof.
- the synergistic anti-scaling composition further comprises an inorganic base.
- the inorganic based is provided for pH adjustment.
- the inorganic base is a hydroxide base.
- a method for inhibiting the scale formation comprises providing a synergistic anti-scaling composition and providing the synergistic anti-scaling composition to an aqueous scaling environment.
- the synergistic anti-scaling composition of the present method comprises a scale inhibitor; and a compatibility aid. It should be understood that the scale inhibitor, and compatibility aid can be added by any conventional means known in the art to obtain the anti-scaling composition of the present technology.
- the scale inhibitor comprises an organophosphoric acid, a phosphonic acid, a phosphonate-based compound, or a carboxylic sulphonated copolymer.
- the scale inhibitor comprises about 2% to about 75% by weight of the composition. In other embodiments, the scale inhibitor comprises about 2% to about 60% by weight of the composition, and in other embodiments, the scale inhibitor comprises about 10% to about 45% by weight of the composition.
- the anti-scaling composition of the present method comprises a chelating polyacid or salt thereof.
- the chelating polyacid or salt thereof comprises ethylenediaminetetraacetic acid (EDTA), hydroxyethyl ethylenediamine triacetic acid (HEDTA), or N,N-Dicarboxymethyl glutamic acid tetrasodium salt (GLDA).
- the compatibility aid of the present method comprises about 0.5% to about 45% by weight of the composition. In other embodiments, the compatibility aid comprises about 1% to about 20% by weight of the composition.
- the anti-scaling composition of the present method further comprises an inorganic base.
- the inorganic base comprises NaOH or KOH.
- the ratio of scale inhibitor to compatibility aid to inorganic base is about 2: 1:1 to about 50:45:5.
- the method further comprises providing the synergistic anti-scaling composition to an aqueous scaling environment.
- the synergistic anti-scaling composition is injected continuously into the aqueous scaling environment.
- the aqueous scaling environment as described herein includes those environments having a high salinity (-200-200,000 ppm TDS), high pH (-6- 8.5), and multiple scale environment.
- about 5-500 ppm of the anti-scaling composition is added to the aqueous scaling environment. In other embodiments, about 10-500 ppm of the anti-scaling composition is added to the aqueous scaling environment, and in other embodiments, about 5-200 ppm of the anti-scaling composition is added to the aqueous scaling environment.
- the scale inhibitor composition is provided to the aqueous environment at a temperature from about 20°C to about 250°C. In other embodiments, the scale inhibitor composition is provided to the aqueous environment at a temperature from about 20°C to about 150°C.
- the aqueous scaling environment is a hydrocarbon-producing well or a geothermal well. It should be understood that a hydrocarbon-producing well platform penetrates a pre-salt oil deposit (i.e. penetrates into a pre-salt layer).
- the aqueous scaling environment comprises a pressure of about 15 psi to 5000 psi.
- the aqueous scaling environment comprises a calcium level of about 100 ppm to about 20,000 ppm, and in other embodiments, about 100 ppm to about 16,000 ppm.
- the aqueous scaling environment comprises a salinity level of about 100 ppm to about 500,000 ppm, and in other embodiments, about 100 ppm to about 300,000 ppm.
- the aqueous scaling environment comprises a temperature up to about 130 °C, and a salinity level up to about 150,000 ppm.
- the aqueous scaling environment comprises calcite, calcium sulfate, celestite, barite, iron carbonate, and/or combinations thereof.
- the aqueous scaling environment comprises of high salinity brine having a temperature of about 0°C to about 250°C, and in other embodiments, 0°C to about 150°C.
- the aqueous scaling environment has a saturation index (SI) from about 1.5 SI to about 3.0 SI. It should be understood that the saturation index (SI) describes the index for determining whether water will tend to dissolve or precipitate a particular mineral and will indicate the severity of the scaling potential.
- SI saturation index
- FIG. 1 exhibits the synergistic effect of the treatment compositions and methods as described herein (* AMP -Aminomethylene Phosphonate; **(Homo or copolymer or Terpolymer); **** Alkylpolycarboxylate).
- the product as disclosed herein was at pH 4-7.
- the compatibility range shown in FIG. 1 was 300,000ppm brine compatibility, which was achieved only in the presence of the disclosed synergistic combination according to the present technology.
- the synergistic anti-scaling composition exhibited a coil ID of about 0.5-0.8mm.
- Table 1 provides the water formulation conditions of the compositions provided in FIG. 1.
- FIGS. 2A-2B include the results of Scenario #1. As shown, the composition of FIG. 2A failed to meet the compatibility requirement, while the composition of FIG. 2B provided a synergistic effect and thus passed the compatibility requirement.
- FIGS. 3A-3B include the results of Scenario #2. From visual observation, FIG. 3A showed precipitate, and FIG. 3B is clear after the compatibility test; thus passing the compatibility requirement. As shown, the composition of FIG. 3A failed to meet the compatibility requirement at 2,500 ppm and 5000 ppm, while the composition of FIG. 3B provided a synergistic effect and thus passed the compatibility requirement.
- FIGS. 4A-4B include the results of Scenario #3.
- FIGS. 4A-4B prove how the synergistic effect of the composition described herein aided in brine compatibility as well as performance. From visual observation, FIG. 4A shows precipitate, while FIG. 4B is clear after the compatibility test; thus passing the compatibility requirement. As shown, FIG. 4A failed to meet the compatibility requirement, while the compositions of FIGS. 4B-provided a synergistic effect and thus passed the compatibility requirement.
- FIG. 5 further provides a comparison of the performance of Scenario #3.
- FIG. 6 further provides a comparison of the performance of Scenario #2.
- FIG. 7 provides additional results related to Scenario #2, where the compatibility tested was 130°C for 20 hours at a dosage of 50,000ppm in order to determine the compatibility dosage limit. As shown, FIG. 7 passed the compatibility requirement at 50,000 ppm.
- Table 2 provides the results of the scaling inhibition performance provided by the present technology as described herein.
- FIGS. 8A-8C and FIG. 9 provide the results from a Dynamic Scale Loop (DSL) performance test of Scenario #4 as provided in TABLE 2, showing the synergistic effect of the present technology as described herein.
- DSL Dynamic Scale Loop
- FIG. 10 provides the results related to Scenario #4 and #5 as provided in FIG. 1.
- TABLE 3 provides the compatibility results provided by the present technology as described herein.
- the synergistic effect of the present technology can be measured with the Dynamic Scale Loop (DSL) coil ID performance obtained.
- DSL Dynamic Scale Loop
- typical DSL coil ID are ⁇ 0.7-0.8mm.
- Oil & Gas demands the need of product performing at 0.5-0.55mm coil ID.
- the present technology as described herein was able to perform at 0.51mm coil ID with a flat curve for 120minutes without increasing the DP.
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- Organic Chemistry (AREA)
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Abstract
Description
Claims
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EP22765371.4A EP4388057A1 (en) | 2021-08-17 | 2022-08-16 | Composition and method for inhibition of scaling in high- salinity, temperature, and pressure applications |
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IN202111037325 | 2021-08-17 | ||
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0299777B1 (en) * | 1987-07-17 | 1994-04-20 | Conoco Phillips Company | Inhibition of reservoir scale |
US5403493A (en) * | 1992-12-10 | 1995-04-04 | Nalco Chemical Company | Noncorrosive scale inhibitor additive in geothermal wells |
US20100000579A1 (en) * | 2008-07-03 | 2010-01-07 | Reinbold Robert S | Compositions And Methods For Removing Scale And Inhibiting Formation Thereof |
WO2016007291A1 (en) * | 2014-07-11 | 2016-01-14 | Diversey, Inc. | Scale-inhibition compositions and methods of making and using the same |
US20160068789A1 (en) * | 2012-10-26 | 2016-03-10 | Ecolab Usa Inc. | Caustic free low temperature ware wash detergent for reducing scale build-up |
-
2022
- 2022-08-16 AR ARP220102207A patent/AR126804A1/en unknown
- 2022-08-16 EP EP22765371.4A patent/EP4388057A1/en active Pending
- 2022-08-16 WO PCT/US2022/075005 patent/WO2023023506A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0299777B1 (en) * | 1987-07-17 | 1994-04-20 | Conoco Phillips Company | Inhibition of reservoir scale |
US5403493A (en) * | 1992-12-10 | 1995-04-04 | Nalco Chemical Company | Noncorrosive scale inhibitor additive in geothermal wells |
US20100000579A1 (en) * | 2008-07-03 | 2010-01-07 | Reinbold Robert S | Compositions And Methods For Removing Scale And Inhibiting Formation Thereof |
US20160068789A1 (en) * | 2012-10-26 | 2016-03-10 | Ecolab Usa Inc. | Caustic free low temperature ware wash detergent for reducing scale build-up |
WO2016007291A1 (en) * | 2014-07-11 | 2016-01-14 | Diversey, Inc. | Scale-inhibition compositions and methods of making and using the same |
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AR126804A1 (en) | 2023-11-15 |
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