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Increasing the clay dissolving capability of a buffer-regulated mud acid

Patent ·
OSTI ID:6640265
; ; ;
The clay dissolving capability of an aqueous mud acid solution of weak acid, weak acid salt and fluoride salt (of the type described in the E. A. Richardson U.S. Pat. No. 3,889,753) can be increased by including in the solution a partial salt of an aminopolyacetic acid chelating or complex-forming agent.
Assignee:
Shell Oil Co.
Patent Number(s):
US 4090563
OSTI ID:
6640265
Country of Publication:
United States
Language:
English

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Related Subjects

03 NATURAL GAS
030900* -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
ACETIC ACID
AMINO ACIDS
AQUEOUS SOLUTIONS
CARBOXYLIC ACIDS
CHELATING AGENTS
CHEMICAL COMPOSITION
COMPLEXES
DISPERSIONS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MIXTURES
MONOCARBOXYLIC ACIDS
NATURAL GAS
NATURAL GAS WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
SALTS
SOLUTIONS
WELLS