Production of xanthan gum from a chemically defined medium introduction

Patent · Tue Feb 22 04:00:00 EST 1983

OSTI ID:5404586

Weisrock, W P; Klein, H S

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
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ACRYLAMIDE
AMIDES
BACTERIA
CARBOHYDRATES
DRILLING FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUIDS
FOSSIL FUELS
FRACTURING FLUIDS
FUELS
MICELLAR SYSTEMS
MICROORGANISMS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PETROLEUM
PH VALUE
POLYSACCHARIDES
PRODUCTION
RECOVERY
SACCHARIDES
TEMPERATURE DEPENDENCE
VISCOSITY
WELLS
XANTHUM GUM