US20120032093A1 - Tagged scale inhibitor compositions and methods of inhibiting scale - Google Patents

Tagged scale inhibitor compositions and methods of inhibiting scale Download PDF

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Publication number
US20120032093A1
US20120032093A1 US12/849,544 US84954410A US2012032093A1 US 20120032093 A1 US20120032093 A1 US 20120032093A1 US 84954410 A US84954410 A US 84954410A US 2012032093 A1 US2012032093 A1 US 2012032093A1
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Prior art keywords
vinyl
scale
polymer
scale inhibiting
acid
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US12/849,544
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English (en)
Inventor
Lucas Moore
Laura Clapp
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Kemira Chemicals Inc
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Kemira Chemicals Inc
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Priority to US12/849,544 priority Critical patent/US20120032093A1/en
Assigned to KEMIRA CHEMICALS INC. reassignment KEMIRA CHEMICALS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MOORE, LUCAS, CLAPP, LAURA
Priority to PCT/US2011/045863 priority patent/WO2012018683A1/en
Priority to RU2013106229/05A priority patent/RU2579388C2/ru
Priority to MX2013001330A priority patent/MX354230B/es
Priority to CA2807148A priority patent/CA2807148A1/en
Priority to BR112013002699A priority patent/BR112013002699A2/pt
Priority to EP11746076.6A priority patent/EP2601276A1/en
Priority to SA111320669A priority patent/SA111320669B1/ar
Publication of US20120032093A1 publication Critical patent/US20120032093A1/en
Priority to CO13020283A priority patent/CO6670595A2/es
Priority to US13/867,506 priority patent/US8980123B2/en
Priority to US14/639,599 priority patent/US9309137B2/en
Pending legal-status Critical Current

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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
    • 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
    • C02F5/14—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 phosphorus
    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/101—Sulfur compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention

Definitions

  • the present disclosure generally relates to tagged scale inhibition compositions and methods of inhibiting scale. More particularly, the present invention relates to imidazole tagged scale polymeric inhibitors for use in water treatment and/or oil field applications.
  • Scale inhibiting polymers are often used in water treatment and oil field applications to minimize and/or prevent scale deposition.
  • the deposition of scale can occur in the transport of aqueous mixtures and in subterranean rock formations due to the presence of water bearing alkaline earth metal cations such as calcium, barium, strontium, and the like as well as the presence of anions such as phosphate, sulfates, carbonates, silicates and the like.
  • a precipitate can form that builds up on interior surfaces of the conduits used for transport or in the subterranean rock formations, which restrict flow of the media of interest, e.g., water or oil.
  • scales that are commonly formed include calcium sulfate, barium sulfate, and/or calcium carbonate that are generally formed in the fresh waters or brines used in well stimulation and the like as a result of increased concentrations of these particular ions, the water pH, pressures, and temperatures.
  • calcium phosphate can form from the phosphate chemistry that is commonly used to treat wells and pipes for corrosion. The buildup of these mineral precipitates can reduce or block flow in the conduits and rock formations as well as cause other problems.
  • the first warning of the existence of a significant scale deposit may be a decline in well performance. In these instances, scale removal techniques may become necessary. As a result, a potentially substantial cost including downtime is required lost to effect repair as a result of scaling.
  • Scale inhibiting materials are often added directly to a fluid to be treated or applied to oil bearing rock formations by means of “squeeze treatment”.
  • Squeeze treatment is a treatment used to control or prevent scale deposition in a rock formation.
  • the scale inhibitor In the squeeze application, the scale inhibitor is pumped into a water-producing zone and attaches to the formation by chemical adsorption or by temperature-activated precipitation. When the well is put back into production, the scale inhibitor leaches out of the formation rock to treat the fluid.
  • Some chemicals typically used in scale-inhibitor squeeze applications include phosphonated carboxylic acids or polymers.
  • Scale formation is only controlled if the scale inhibitor polymer is present at a treatment level equal to or above the product's defined minimum inhibitor concentration. When the scale inhibitor is below the minimum inhibitor concentration such as may occur during use, adsorption or degradation, additional amounts are then needed. For example, once the well is subjected to the squeeze application and the well is again operational, the concentration of the scale inhibitor in the produced fluids will diminish over time until such time that the scale inhibitor is at about or below the minimum inhibitor concentration. However, it is difficult to determine when more scale inhibitor is needed and in which conduit or well it is needed. To address this problem, scale inhibitors are often tagged or labeled so that the presence or absence of the scale inhibitor can be readily detected.
  • Prior art scale inhibitors are generally tagged by introduction of specific atoms such as phosphorous, boron, and the like such that the concentration can be readily detected by inductively coupled plasma (ICP) analysis for the tagged atom.
  • ICP inductively coupled plasma
  • the scale inhibitor can be tagged fluorescent moieties.
  • these compounds are generally limited to structures that include one or more conjugated six member benzene rings that fluoresce at about 292 nm.
  • the scale inhibition (co)polymer includes at least one scale inhibiting polymerized monomer selected from the group consisting of acrylic acid; vinyl sulfonic acid or vinyl sulfonate salts; vinyl phosphoric acid or vinyl phosphonate salts; vinylidene diphosphonic acid or salts thereof; methacrylic acid; vinyl acetate; vinyl alcohol; vinyl chloride; unsaturated mono- or di-carboxylic acids or anhydrides; vinyl chloride; styrene-p-sulfonic acid, or styrene sulfonates salts; acrylamido-2-methylpropanesulfonic acid (AMPS); hydroxyphosphonoacetic acid (HPA); hypophosphorus acids acrylamides, propargyl alcohol having formula HC ⁇ C—CH 2 —OH; butyr-1,4-diol, and mixtures thereof; and a 1-vinyl imidazole polymerized monomer selected from the group consisting of acrylic acid; vinyl sulfonic
  • R, R 1 and R 2 are the same or different, and each R, R 1 , and R 2 is selected from the group consisting of H, an alkyl group, an aromatic group, a phosphate group, a nitrate group, and a sulfate group.
  • a process for determining a concentration of a scale inhibiting (co)polymer for inhibiting scale formation comprises introducing an effective amount of the scale inhibition (co)polymer to an aqueous medium to inhibit calcium carbonate, calcium sulfate, barium sulfate, and/or calcium phosphate scale formation, wherein the scale inhibition (co)polymer includes at least one scale inhibiting moiety and an imidazole moiety formed by polymerizing at least one scale inhibiting monomer and a 1-vinylimidazole monomer; measuring a fluorescence signal corresponding to the imidazole moiety; and determining a concentration of the scale inhibiting (co)polymer based on the fluorescence signal.
  • a water treatment solution for inhibiting scale formation comprises a scale inhibiting (co)polymer including an imidazole moiety, comprising at least one scale inhibiting polymerized monomer selected from the group consisting of acrylic acid; vinyl sulfonic acid or vinyl sulfonate salts; vinyl phosphoric acid or vinyl phosphonate salts; vinylidene diphosphonic acid or salts thereof; methacrylic acid; vinyl acetate; vinyl alcohol; vinyl chloride; unsaturated mono- or di-carboxylic acids or anhydrides; vinyl chloride; styrene-p-sulfonic acid, or styrene sulfonates salts; acrylamido-2-methylpropanesulfonic acid (AMPS); hydroxyphosphonoacetic acid (HPA); hypophosphorus acids acrylamides, propargyl alcohol having formula HC ⁇ C—CH 2 —OH; butyr-1,4-diol, and mixtures thereof; and a 1-viny
  • R, R 1 and R 2 are the same or different, and each R, R 1 , and R 2 is selected from the group consisting of H, an alkyl, an aromatic, phosphate, nitrate, and sulfate; and a solvent.
  • the present disclosure is generally directed to scale inhibiting compositions and methods for inhibiting scale formation.
  • the compositions generally include a scale inhibiting (co)polymer including an imidazole moiety, wherein the fluorescence of the imidazole moiety can be used to determine the concentration of the scale inhibiting (co)polymer.
  • the term (co)polymer is generally defined as materials that are produced by polymerization of more than one type of monomer (including 2, 3, 4, or more different monomers) without restriction on the number of monomer units that are incorporated into the product provided that at least one of the monomers is a scale inhibiting moiety and at least one of the monomers is an imidazole moiety.
  • the imidazole moiety fluoresces at about 424 nanometers (nm), thereby providing the scale inhibitor (co)polymer with a means for monitoring the concentration of the scale inhibitor (co)polymer at a wavelength different from prior art's monitoring of specific atoms or scale inhibiting polymers tagged with one or more aromatic benzene rings. Because of the difference in wavelength, the scale inhibiting (co)polymer including the imidazole moiety can be used in multi-tagged systems.
  • Scale inhibiting (co)polymers including the imidazole moiety are obtainable by free radical polymerization of one or more scale inhibiting monomers with a 1-vinylimidiazole monomer of the formula (1):
  • R, R 1 and R 2 are the same or different, and each can be H, an alkyl, or an aromatic group.
  • R, R 1 and R 2 may include inorganic functionality, such as: phosphates, nitrates, or sulfates.
  • the substituent can be used to shift the maximum wavelength fluorescence emission.
  • the imidazole moiety fluoresces at about 424 nm.
  • Suitable scale inhibiting monomers include, without limitation, acrylic acid; vinyl sulfonic acid or vinyl sulfonate salts; vinyl phosphoric acid or vinyl phosphonate salts; vinylidene diphosphonic acid or salts thereof; methacrylic acid; vinyl acetate; vinyl alcohol; vinyl chloride; unsaturated mono- or di-carboxylic acids or anhydrides, such as maleic anhydride, maleic acid, fumaric acid, itaconic acid, aconitic acid, mesaconic acid, citraconic acid, crotonic acid isocrotonic acid, angelic acid, tiglic acid; vinyl chloride; styrene-p-sulfonic acid, or styrene sulfonates salts; allyl sulfonate salts; acrylamido-2-methylpropanesulfonic acid (AMPS); hydroxyphosphonoacetic acid (HPA); hypophosphorus acids such as H 3 PO 3 , giving units of formula
  • scale inhibiting monomers are usually comprised in the polymer backbone, other monomers and/or other groups may also be included.
  • the other groups can result from a polymerization initiator or can be end-capping groups.
  • the polymerization of the monomers can be carried out in the presence of polymerization initiators including, without limitation, ammonium persulfate, sodium persulfate, Vazo initiators, AIBN, organic or inorganic peroxides, cerium ammonium nitrate, perchlorates, and the like.
  • the polymerization initiators are generally in an amount of about 0.01 to about 3 weight percent based on the total weight of the monomers.
  • any polymerization method can be used to prepare the polymers. Free-radical polymerization methods are generally preferred. Suitable methods include aqueous bulk/dispersion polymerization, solution polymerization, or emulsion polymerization.
  • the polymerization process is solution polymerization, wherein water is charged to a reaction vessel fitted with a mechanical stirrer and water condenser and heated to a temperature within a range of 45 to 110° C.
  • One or more polymerization initiators may be added or these may be fed in later.
  • the 1-vinylimidazole monomer may also be added to this charge, added to the polymer feed or fed in separately.
  • a monomer feed(s), soluble initiator feed and optionally a chain transfer reagent feed are added to the vessel over a period of time.
  • the imidazole moiety in the scale inhibiting (co)polymer is generally at a molar amount of less than 20% by monomer. In other embodiments, the imidazole moiety is at a weight percent of total monomer of 10% to 20%; and in still other embodiments, the imidazole moiety is at a weight percent of 2 to 10%.
  • the scale inhibiting (co)polymer has a weight average molecular weight of 1200 to 15000 Daltons; in other embodiments, the weight average molecular weight is 4000 to 10000 Daltons, and in still other embodiments, the weight average molecular weight is 1500 to 3000 Daltons.
  • the scale inhibitor polymer including the imidazole moiety can be detected by fluorometry, for example using a fixed wavelength fluorometer.
  • the scale inhibiting (co)polymer can be used as a scale inhibitor in any industrial water system where a scale inhibitor is needed.
  • Suitable industrial water systems include, without limitation, cooling tower water systems (including open recirculating, closed and once-through systems); petroleum wells, downhole formations, geothermal wells and other oil field applications; boilers and boiler water systems; mineral process waters including mineral washing, flotation and benefaction; paper mill digesters, washers, bleach plants and white water systems; black liquor evaporators in the pulp industry; gas scrubbers and air washers; continuous casting processes in the metallurgical industry; air conditioning and refrigeration systems; industrial and petroleum process water; indirect contact cooling and heating water, such as pasteurization water; water reclamation and purification systems; membrane filtration water systems; food processing streams (meat, vegetable, sugar beets, sugar cane, grain, poultry, fruit and soybean); and waste treatment systems as well as in clarifiers, liquid-solid applications, municipal sewage treatment and industrial or municipal water systems.
  • cooling tower water systems including open re
  • This effective amount of the scale inhibitor (co)polymer will generally vary depending on the particular system to be treated and scale inhibiting moieties in the scale inhibiting (co)polymer and will be influenced by factors such as the area subject to deposition, pH, temperature, water quantity, and the respective concentration in the water of the potential scale and deposit forming species.
  • the treatment solution according to the present disclosure will be effective when the scale (co)polymer used at levels less than 35 parts per million.
  • the composition is effective at concentrations of about 4 to about 7 parts per million and in still other embodiments; the effective concentration is about 0.5 to about 3 parts per million.
  • the composition can be added directly into the desired aqueous system to be treated in a fixed quantity or can be provided as an aqueous solution and added continuously or intermittently to the aqueous system as can be desired for some applications.
  • compositions of the scale inhibitor (co)polymer can be suitably used in oilfield injection and production waters, including topside, downhole and rock formation squeeze applications at the well site.
  • scale formation can constrict injection lines, flow lines, and tubing strings.
  • the above noted composition functions by modifying the crystal growth of nucleating scale particles and interrupting and delaying crystal growth. They also sequester metal ions, making them unavailable for ion pairing with anions and hence preventing precipitation of insoluble scale.
  • the scale inhibiting (co)polymer composition is utilized in a squeeze application.
  • the scale inhibiting (co)polymer is diluted in a suitable carrier solvent (usually brine) and propagated out to an optimized radial distance into the oil producing formation, where it is retained and then released slowly back into the aqueous phase during normal well production.
  • the squeeze process generally includes applying a dilute solution of the scale inhibiting (co)polymer with surfactant (0.1%) to clean and cool the near wellbore. Once cleaned, a high concentration solution of the scale inhibiting (co)polymer at between 5 and 20% is introduced, followed by a low concentration solution of the scale inhibiting (co)polymer.
  • maleic anhydride, vinyl imidazole and ethylenediamine tetraacetic acid were obtained from Sigma-Aldrich Co.
  • Sodium allyl sulfonate was obtained from McGean Rohco, Inc
  • Ammonium persulfate was obtained from Kemira Chemicals, Inc.
  • sodium allyl sulfonate was tagged with 10% vinyl imidazole (SASMAC/10% IM).
  • SASMAC/10% IM 10% vinyl imidazole
  • Sodium allyl sulfonate (340.10 g, maleic anhydride (27.84 g) vinyl imidazole (15.10 g) and EDTA (4.72 g) were charged to a reactor.
  • the reactor was equipped with a Teflon coated thermocouple, a nitrogen inlet, one feeding tube inlet, a glass and Teflon stir shaft, and a heating mantle. The reaction was carried out at 90° C. with constant flow of nitrogen and low agitation.
  • One feeding tank containing ammonium persulfate (6.96 g) in water (32.0 g) was prepared and fed into the reactor over a two hour period.
  • Maleic anhydride (27.84 g) was fed manually over the 2 hour initiator period. Once the initiator and maleic anhydride feeds were complete, the reaction was held at 90° C. for one hour before cooling to room temperature.
  • sodium allyl sulfonate was tagged with 5% vinyl imidazole (SASMAC/5% IM).
  • SASMAC/5% IM 5% vinyl imidazole
  • Sodium allyl sulfonate (340.10 g, maleic anhydride (27.84 g) vinyl imidazole (7.55 g) and EDTA (4.72 g) were charged to a reactor and reacted in accordance with Example 1. Once the initiator and maleic anhydride feeds were complete, the feed line was flushed with water (5 g) and the reaction was held at 90° C. for one hour before cooling to room temperature.
  • polyacrylate was tagged with varying amounts of vinyl imidazole (AA/IM) having a molecular weight of about 2,000 Daltons.
  • AA/IM vinyl imidazole
  • the reactor was equipped with a Teflon coated thermocouple, a nitrogen inlet, three feeding tube inlets, a stainless steel stir shaft, and a heating mantle. Water (190.7 g) was charged to the reactor and heated to 85° C. The reaction was carried out at 85° C. with constant flow of nitrogen and low agitation.
  • Feed Tank 1 glacial acrylic acid (279.7 g), vinyl imidazole (5.71 g)
  • Feed Tank 2 water (89.5 g), sodium persulfate (12.7 g)
  • Feed Tank 3 water (44.8 g), sodium bisulfite (161.0 g)
  • Feed Tank 1 glacial acrylic acid (271.2 g), vinyl imidazole (14.2 g)
  • Feed Tank 2 water (89.5 g), sodium persulfate (12.7 g)
  • Feed Tank 3 water (44.8 g), sodium bisulfite (161.0 g)
  • Feed Tank 1 glacial acrylic acid (256.9 g), vinyl imidazole (28.5 g)
  • Feed Tank 2 water (89.5 g), sodium persulfate (12.7 g)
  • Feed Tank 3 water (44.8 g), sodium bisulfite (161.0 g)
  • Feed Tank 1 glacial acrylic acid (228.5 g), vinyl imidazole (57.0 g)
  • Feed Tank 2 water (89.5 g), sodium persulfate (12.7 g)
  • Feed Tank 3 water (44.8 g), sodium bisulfite (161.0 g)
  • Each reagent mixture was fed into a reactor over a four hour period. Once the feeds were complete, the feed lines were flushed with water (10.0 g) and the reaction mixture held at 85° C. for one hour before cooling to room temperature. The pH was adjusted to 6.5 using 50% sodium hydroxide.
  • Table 1 provides the fluorescence intensities at 424 nm at different levels of concentration for the various (co)polymers.
  • the fluorescence emission signal at about 424 nm makes the scale inhibitor (co)polymer suitable for use in multi-tagged systems.
  • the scale inhibiting (co)polymer with the imidazole moiety can be used with a sodium styrene sulfonate inhibitor, which by itself fluoresces at 292 nm
  • the imidazole (co)polymers provide scale inhibition properties provide the ability to monitor scale inhibitor levels during the oil or mining applications, among others.

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US12/849,544 2010-08-03 2010-08-03 Tagged scale inhibitor compositions and methods of inhibiting scale Pending US20120032093A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US12/849,544 US20120032093A1 (en) 2010-08-03 2010-08-03 Tagged scale inhibitor compositions and methods of inhibiting scale
EP11746076.6A EP2601276A1 (en) 2010-08-03 2011-07-29 Tagged scale inhibitor compositions and methods of inhibiting scale
CA2807148A CA2807148A1 (en) 2010-08-03 2011-07-29 Tagged scale inhibitor compositions and methods of inhibiting scale
RU2013106229/05A RU2579388C2 (ru) 2010-08-03 2011-07-29 Композиции меченого ингибитора отложений и способы ингибирования отложений
MX2013001330A MX354230B (es) 2010-08-03 2011-07-29 Composiciones marcadas inhibidoras de incrustacion y metodos para inhibir la incrustacion.
PCT/US2011/045863 WO2012018683A1 (en) 2010-08-03 2011-07-29 Tagged scale inhibitor compositions and methods of inhibiting scale
BR112013002699A BR112013002699A2 (pt) 2010-08-03 2011-07-29 composições inibidoras de incrustação etiquetadas e métodos para inibir incrustação
SA111320669A SA111320669B1 (ar) 2010-08-03 2011-08-03 تركيبات مُعلَّمة مثبطة للتقشُّر وطرق لتثبيط التقشُّر
CO13020283A CO6670595A2 (es) 2010-08-03 2013-02-04 Composiciones etiquetas de inhibidor de incrustación y métodos de inhibición de incrustaciones
US13/867,506 US8980123B2 (en) 2010-08-03 2013-04-22 Tagged scale inhibitor compositions and methods of inhibiting scale
US14/639,599 US9309137B2 (en) 2010-08-03 2015-03-05 Tagged scale inhibitor compositions and methods of inhibiting scale

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EP (1) EP2601276A1 (ru)
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CA (1) CA2807148A1 (ru)
CO (1) CO6670595A2 (ru)
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Cited By (19)

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CN103361652A (zh) * 2012-03-29 2013-10-23 中国石油化工股份有限公司 一种用于蒸馏装置的中和缓蚀剂及其制备方法
CN103359841A (zh) * 2012-03-29 2013-10-23 中国石油化工股份有限公司 一种中和缓蚀剂及其制备方法
WO2014009445A1 (en) 2012-07-10 2014-01-16 Toivonen Susanna Tagged scale inhibiting polymer compositions and methods of inhibiting scale formation
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WO2014055343A1 (en) 2012-10-05 2014-04-10 Meadwestvaco Corporation Traceable polymeric sulfonate scale inhibitors and methods of using
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RU2013106229A (ru) 2014-09-10
BR112013002699A2 (pt) 2016-05-31

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