Drilling fluid

Patent · Tue Nov 03 00:00:00 EST 1987

OSTI ID:5701122

Russell, J A; Patel, B B

A drilling fluid additive mixture is described consisting essentially of a sulfoalkylated tannin in admixture with a non-sulfoalkylated alkali-solubilized lignite wherein the weight ratio of the sulfoalkylated tannin to the non-sulfoalkylated lignite is in the range from about 2:1 to about 1:1. The sulfoalkylated tannin has been sulfoalkylated with at least one -(C(R-)/sub 2/-SO/sub 3/M side chain, wherein each R is selected from the group consisting of hydrogen and alkyl radicals containing from 1 to about 5 carbon atoms, and M is selected from the group consisting of ammonium and the alkali metals.

• Assignee: Phillips Petroleum Co., Bartlesville, OK
• Patent Number(s): US 4704214
• OSTI ID: 5701122
• Resource Relation: Patent File Date: Filed date 11 Oct 1984
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
DRILLING FLUIDS
ADDITIVES
CHEMICAL COMPOSITION
ALKALI METAL COMPOUNDS
AMMONIA
DISSOLUTION
HYDROGEN
LIGNITE
NATURAL GAS WELLS
OIL WELLS
TANNIC ACID
AROMATICS
BROWN COAL
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
COAL
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MATERIALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHENOLS
POLYPHENOLS
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing