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Acidizing reservoirs while chelating iron with sulfosalicylic acid

Patent:

Abstract

A well treating process is described in which an aqueous solution of a strong acid capable of dissolving solids in a manner increasing the permeability of a subterranean earth formation is injected into a subterranean reservoir that contains an asphaltenic oil. At least the first injected portion of the aqueous acid and a solution or homogeneous dispersion of at least enough 5-sulfosalicylic acid to chelate with and prevent the formation of iron-asphaltene solids are included with substantially all of the ferric ions that become dissolved within the strong acid solution that enters the earth formation. 10 claims.
Publication Date:
Sep 30, 1980
Product Type:
Patent
Report Number:
CA 1086485
Reference Number:
EDB-84-182147
Resource Relation:
Patent Priority Date: Priority date 24 Jun 1977, United States of America (USA)
Subject:
02 PETROLEUM; OIL WELLS; ACIDIZATION; AQUEOUS SOLUTIONS; ASPHALTENES; CHELATES; CORROSION INHIBITORS; INJECTION; IRON IONS; PERMEABILITY; PETROLEUM; RESERVOIR ROCK; SALICYLIC ACID; SOLUBILITY; WELL COMPLETION; WELL STIMULATION; ASPHALTS; BITUMENS; CARBOXYLIC ACIDS; CHARGED PARTICLES; COMPLEXES; DISPERSIONS; ENERGY SOURCES; FOSSIL FUELS; FUELS; HYDROXY ACIDS; INTAKE; IONS; MIXTURES; ORGANIC ACIDS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; SOLUTIONS; STIMULATION; TAR; WELLS; 020300* - Petroleum- Drilling & Production
OSTI ID:
6483840
Country of Origin:
Canada
Language:
English
Submitting Site:
HEDB
Size:
Pages: v
Announcement Date:

Patent:

Citation Formats

McLaughlin, W A, and Berkshire, D C. Acidizing reservoirs while chelating iron with sulfosalicylic acid. Canada: N. p., 1980. Web.
McLaughlin, W A, & Berkshire, D C. Acidizing reservoirs while chelating iron with sulfosalicylic acid. Canada.
McLaughlin, W A, and Berkshire, D C. 1980. "Acidizing reservoirs while chelating iron with sulfosalicylic acid." Canada.
@misc{etde_6483840,
title = {Acidizing reservoirs while chelating iron with sulfosalicylic acid}
author = {McLaughlin, W A, and Berkshire, D C}
abstractNote = {A well treating process is described in which an aqueous solution of a strong acid capable of dissolving solids in a manner increasing the permeability of a subterranean earth formation is injected into a subterranean reservoir that contains an asphaltenic oil. At least the first injected portion of the aqueous acid and a solution or homogeneous dispersion of at least enough 5-sulfosalicylic acid to chelate with and prevent the formation of iron-asphaltene solids are included with substantially all of the ferric ions that become dissolved within the strong acid solution that enters the earth formation. 10 claims.}
place = {Canada}
year = {1980}
month = {Sep}
}