Setting retarding composition for well cementing and recementing
Patent
·
OSTI ID:6187262
The present invention relates to an improved composition that retards setting in the cementing and recementing of oil well casings, which can be applied at depths that vary between 13,123.4 and 21,325.5 ft. The retarding composition is constituted by the following ingredients: sodium or potassium carboxymethylcellulose; sodium tetraborate and Dextrine, it being characterized in that it also contains an inorganic acid such as boric acid.
- Assignee:
- Instituto Mexicano del Petroleo
- Patent Number(s):
- US 4137093
- OSTI ID:
- 6187262
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKALI METAL COMPOUNDS
BORATES
BORIC ACID
BUILDING MATERIALS
CELLULOSE ESTERS
CEMENTS
DEPTH
DIMENSIONS
ESTERS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATERIALS
OIL WELLS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SODIUM COMPOUNDS
WELL CASINGS
WELL COMPLETION
WELLS
020300* -- Petroleum-- Drilling & Production
ALKALI METAL COMPOUNDS
BORATES
BORIC ACID
BUILDING MATERIALS
CELLULOSE ESTERS
CEMENTS
DEPTH
DIMENSIONS
ESTERS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATERIALS
OIL WELLS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SODIUM COMPOUNDS
WELL CASINGS
WELL COMPLETION
WELLS