Oil well drilling clay conditioners and method of their preparation

Patent · Tue May 08 04:00:00 EDT 1984

OSTI ID:6785703

Detroit, W J

Drilling fluid additives are prepared by oxidation of sulfonated lignin-containing materials with manganese dioxide under highly acidic conditions to make manganese lignosulfonates. Additional improvements in the rheological properties of the additives may be obtained by complexing the manganese lignosulfonate so obtained with a heavy metal cation (preferably iron or copper), by, for example, addition of ferrous sulfate or ferric sulfate to the manganese lignosulfonate. These products show the requisite combination of rheological properties for a satisfactory drilling fluid additive or conditioner.

• Assignee: Reed Lignin, Inc.
• Patent Number(s): US 4447339
• OSTI ID: 6785703
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
CARBOHYDRATES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COPPER COMPOUNDS
DRILLING FLUIDS
FLUIDS
IRON COMPOUNDS
LIGNIN
MANGANESE COMPOUNDS
MANGANESE OXIDES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLYSACCHARIDES
RHEOLOGY
SACCHARIDES
SULFONATES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS