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1. WO2020002011 - SALT OF MONOCHLOROACETIC ACID WITH CHELATING AGENT FOR DELAYED ACIDIFICATION IN THE OIL FIELD INDUSTRY

Publication Number WO/2020/002011
Publication Date 02.01.2020
International Application No. PCT/EP2019/065805
International Filing Date 17.06.2019
IPC
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
60
Compositions for stimulating production by acting on the underground formation
62
Compositions for forming crevices or fractures
72
Eroding chemicals, e.g. acids
74
combined with additives added for specific purposes
C09K 8/74 (2006.01)
CPC
C09K 8/74
Applicants
  • NOURYON CHEMICALS INTERNATIONAL B.V. [NL/NL]; Velperweg 76 NL-6824 BM Arnhem, NL
Inventors
  • VAN LARE, Cornelis Elizabeth Johannus; NL
  • LEON MATHEUS, Maria Antonieta; NL
  • SCHUTTE, Jannes; NL
  • KOOIJMAN, Cornelis; NL
Agents
  • FRASER, James; LKGlobal UK Ltd. 23 Skylines Village London E14 9TS, GB
Priority Data
18179849.726.06.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SALT OF MONOCHLOROACETIC ACID WITH CHELATING AGENT FOR DELAYED ACIDIFICATION IN THE OIL FIELD INDUSTRY
(FR) SEL D'ACIDE MONOCHLOROACÉTIQUE AVEC AGENT CHÉLATANT POUR UNE ACIDIFICATION RETARDÉE DANS L'INDUSTRIE DES CHAMPS PÉTROLIFÈRES
Abstract
(EN)
The disclosure is directed to a process for treating a subterranean earth formation by introducing a monovalent salt of monochloroacetic acid into said subterranean earth formation in the presence of a chelating agent which comprises at least one carboxylate group having a monovalent counterion and furthermore comprises a carbon chain carrying at least five hydroxyl groups.Preferably the cation of the monovalentsalt of monochloroacetic acid is sodium.
(FR)
L'invention concerne un procédé de traitement d'une formation terrestre souterraine par l'introduction d'un sel monovalent d'acide monochloroacétique dans ladite formation terrestre souterraine en présence d'un agent chélatant qui comprend au moins un groupe carboxylate ayant un contre-ion monovalent et comprend en outre une chaîne carbonée portant au moins cinq groupes hydroxyle. Le cation du sel monovalent d'acide monochloroacétique est de préférence le sodium.
Latest bibliographic data on file with the International Bureau