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1. (WO2019032534) REDUCED CORROSION IRON SULFIDE SCALE REMOVING FLUIDS
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/032534 International Application No.: PCT/US2018/045536
Publication Date: 14.02.2019 International Filing Date: 07.08.2018
IPC:
C09K 8/54 (2006.01) ,C23F 11/00 (2006.01) ,C09K 8/532 (2006.01)
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8
Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
54
Compositions for in situ inhibition of corrosion in boreholes or wells
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
F
NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACES; INHIBITING CORROSION OF METALLIC MATERIAL; INHIBITING INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25247
11
Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8
Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
52
Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
528
inorganic depositions, e.g. sulfates or carbonates
532
Sulfur
Applicants:
SAUDI ARABIAN OIL COMPANY [SA/SA]; 1 Eastern Avenue Dhahran, 31311, SA
ARAMCO SERVICES COMPANY [US/US]; Law Department Two Allen Center 1200 Smith St. 27th Floor Houston, TX 77002, US (AG)
Inventors:
SUN, Hejian; US
LI, Leiming; US
LIANG, Feng; US
Agent:
RHEBERGEN, Constance, Gall; US
Priority Data:
15/670,82607.08.2017US
Title (EN) REDUCED CORROSION IRON SULFIDE SCALE REMOVING FLUIDS
(FR) FLUIDES D'ÉLIMINATION DE DÉPÔTS DE SULFURE DE FER À CORROSION RÉDUITE
Abstract:
(EN) A low-corrosivity composition suitable for dissolving scale on metals. The scale includes iron sulfide scale. The composition includes an aqueous hydrogen peroxide solution comprising hydrogen peroxide; and an acidic solution comprising at least one acid, where the hydrogen peroxide and acid are present at concentrations such that the hydrogen peroxide does not break down to form visible bubbles at about room temperature, where the hydrogen peroxide and acid are present at concentrations such that iron sulfide scale is removed from a metal with iron sulfide scale, after the composition contacts the metal and iron sulfide scale at an elevated temperature greater than room temperature, and where the hydrogen peroxide and acid are present at concentrations such that pitting is not caused on the metal, the metal comprising carbon steel.
(FR) L'invention concerne une composition à faible corrosivité appropriée pour dissoudre des dépôts sur des métaux. Les dépôts comprennent des dépôts de sulfure de fer. La composition comprend une solution aqueuse de peroxyde d'hydrogène comprenant du peroxyde d'hydrogène ; et une solution acide comprenant au moins un acide, le peroxyde d'hydrogène et l'acide étant présents à des concentrations telles que le peroxyde d'hydrogène ne se désintègre pas pour former des bulles visibles à environ la température ambiante, le peroxyde d'hydrogène et l'acide étant présents à des concentrations telles que des dépôts de sulfure de fer sont éliminés d'un métal présentant des dépôts de sulfure de fer, une fois que la composition entre en contact avec le métal et les dépôts de sulfure de fer à une température élevée supérieure à la température ambiante, et le peroxyde d'hydrogène et l'acide étant présents à des concentrations telles que le métal ne présente aucune piqûre, le métal comprenant de l'acier ordinaire.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)