Production of xanthan gum from a chemically defined medium introduction
Heteropolysaccharides produced by the action of Xanthomonas bacteria on carbohydrate media have a potential application as film forming agents, as thickeners in oil field drilling fluids and fracturing liquids and as emulsifying, stabilizing, and sizing agents. Heteropolysaccharides, particularly, xanthan gum, have a significant potential as mobility control agents in micellar polymer flooding. Xanthan gum has excellent viscosifying properties at low concentration, is resistant to shear degradation and exhibits only minimal losses in viscosity as a function of temperature, pH, and ionic strength. For these reasons, xanthan gum is an attractive alternative to synthetic polyacrylamides for enhanced oil recovery operations. 15 claims.
- Assignee:
- Standard Oil Co. (Indiana)
- Patent Number(s):
- US 4374929
- OSTI ID:
- 5404586
- Resource Relation:
- Patent File Date: Filed date 2 Nov 1981
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
DRILLING FLUIDS
FRACTURING FLUIDS
XANTHUM GUM
PRODUCTION
ACRYLAMIDE
BACTERIA
ENHANCED RECOVERY
MICELLAR SYSTEMS
OIL WELLS
PETROLEUM
PH VALUE
TEMPERATURE DEPENDENCE
VISCOSITY
AMIDES
CARBOHYDRATES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
MICROORGANISMS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLYSACCHARIDES
RECOVERY
SACCHARIDES
WELLS
020300* - Petroleum- Drilling & Production