Oil well drilling clay conditioners and method of their preparation

Patent · Tue Jul 03 04:00:00 EDT 1984

OSTI ID:6432377

Detroit, W J

Improved drilling fluid additives or conditioners are obtained by oxidation of sulfonated lignin-containing materials with manganese dioxide and boron addition either before or after the oxidation step. The resulting manganese-boron lignosulfonates are more thermally stable and they are rheologically suitable as drilling fluid additives. Additional improvements in thermal stability and rheological properties are realized by complexing the manganese-boron lignosulfonates with a heavy metal cation, notably, iron, preferably used as ferrous sulfate.

• Assignee: Reed Lignin Inc.
• Patent Number(s): US 4457853
• OSTI ID: 6432377
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
BORON COMPOUNDS
CARBOHYDRATES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CLAYS
COMPLEXES
DRILLING FLUIDS
FLUIDS
IRON COMPOUNDS
IRON SULFATES
LIGNIN
MANGANESE COMPOUNDS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
POLYSACCHARIDES
RHEOLOGY
SACCHARIDES
SULFATES
SULFONATES
SULFONATION
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
WELLS