SALT OF MONOCHLOROACETIC ACID WITH CHELATING AGENT FOR DELAYED ACIDIFICATION IN THE OIL FIELD INDUSTRY
申请人:Nouryon Chemicals International B.V.
公开号:EP3814449A1
公开(公告)日:2021-05-05
[EN] ACIDIZING TREATMENT FLUID FOR DELAYED ACIDIFICATION IN THE OIL FIELD INDUSTRY<br/>[FR] FLUIDE DE TRAITEMENT D'ACIDIFICATION POUR ACIDIFICATION RETARDÉE DANS L'INDUSTRIE PÉTROLIÈRE
申请人:NOURYON CHEMICALS INT BV
公开号:WO2021233781A1
公开(公告)日:2021-11-25
The disclosure is directed to a process for treating a subterranean earth formation by introducing an acidizing treatment fluid comprising a monovalent salt of monochloroacetic acid into said subterranean earth formation in the presence of at least one scaling inhibitor comprising specific polymers of maleic acid and/or acrylic acid. It also pertains to an acidizing treatment fluid comprising a monovalent salt of monochloroacetic acid, a scaling inhibitor and optionally a chelating agent.
[EN] SALT OF MONOCHLOROACETIC ACID WITH ACID FOR DELAYED ACIDIFICATION IN THE OIL FIELD INDUSTRY<br/>[FR] SEL D'ACIDE MONOCHLOROACÉTIQUE AVEC UN ACIDE POUR UNE ACIDIFICATION RETARDÉE DANS L'INDUSTRIE DES CHAMPS PÉTROLIFÈRES
申请人:NOURYON CHEMICALS INT BV
公开号:WO2021233782A1
公开(公告)日:2021-11-25
The disclosure is directed to a process for treating a subterranean earth formation by introducing a buffered acidizing treatment fluid comprising a monovalent salt of monochloroacetic acid and at least one acid into said subterranean earth formation, wherein the pH of the buffered acidizing treatment fluid is from about 1.2 to about 5. It also pertains to a buffered acidizing treatment fluid comprising a monovalent salt of monochloroacetic acid, at least one acid and optionally a means to suppress salt precipitation.
[EN] ACIDIZING TREATMENT FLUID FOR DELAYED ACIDIFICATION IN THE OIL FIELD INDUSTRY<br/>[FR] FLUIDE DE TRAITEMENT D'ACIDIFICATION POUR UNE ACIDIFICATION RETARDÉE DANS L'INDUSTRIE DES CHAMPS PÉTROLIFÈRES
申请人:NOURYON CHEMICALS INT BV
公开号:WO2021233999A1
公开(公告)日:2021-11-25
The disclosure is directed to a process for treating a subterranean earth formation by introducing an acidizing treatment fluid comprising a monovalent salt of monochloroacetic acid into said subterranean earth formation in the presence of at least one bromide or iodide salt or salt precursor, wherein the at least one bromide or iodide salt or salt precursor is introduced into the subterranean earth formation in an amount of from about 0.3 to about 10 wt%, based on the total weight of the acidizing treatment fluid. It also pertains to an acidizing treatment fluid comprising a monovalent salt of monochloroacetic acid, at least one bromide or iodide salt or salt precursor and optionally a means to suppress precipitation of calcium glycolate and/or at least one acid.