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Title: Sulfonated asphalt/causticized lignite blend

Abstract

This patent describes a water based well-working fluid comprising an aqueous fluid medium containing clay and a mixture of a sulfonated asphalt and a causticized lignite. A weight ratio of the sulfonated asphalt is prepared by sulfonating asphalt with a sulfonating agent selected from the group consisting of sulfur trioxide, fuming sulfuric acid, chlorosulfonic acid and concentrated sulfuric acid to the causticized lignite within the range of 3:1 to 1:1. The lignite is not present when the asphalt is sulfonated. The mixture is present in an amount sufficient to reduce foaming and plastic viscosity without significantly affecting lubricity.

Inventors:
Publication Date:
OSTI Identifier:
7096591
Patent Number(s):
US 4645609
Assignee:
Phillips Petroleum Co., Bartlesville, OK
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 23 May 1985
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; DRILLING FLUIDS; CHEMICAL PREPARATION; AQUEOUS SOLUTIONS; ASPHALTS; CLAYS; FOAMS; LIGNITE; LUBRICATING PROPERTIES; MIXTURES; NATURAL GAS WELLS; OIL WELLS; QUANTITY RATIO; SULFONATION; SULFONIC ACIDS; SULFUR TRIOXIDE; SULFURIC ACID; VISCOSITY; BITUMENS; BROWN COAL; CARBONACEOUS MATERIALS; CHALCOGENIDES; CHEMICAL REACTIONS; COAL; COLLOIDS; DISPERSIONS; ENERGY SOURCES; FLUIDS; FOSSIL FUELS; FUELS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; MATERIALS; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; OTHER ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SOLUTIONS; SULFUR COMPOUNDS; SULFUR OXIDES; SYNTHESIS; TAR; WELLS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing

Citation Formats

Patel, B B. Sulfonated asphalt/causticized lignite blend. United States: N. p., 1987. Web.
Patel, B B. Sulfonated asphalt/causticized lignite blend. United States.
Patel, B B. Tue . "Sulfonated asphalt/causticized lignite blend". United States.
@article{osti_7096591,
title = {Sulfonated asphalt/causticized lignite blend},
author = {Patel, B B},
abstractNote = {This patent describes a water based well-working fluid comprising an aqueous fluid medium containing clay and a mixture of a sulfonated asphalt and a causticized lignite. A weight ratio of the sulfonated asphalt is prepared by sulfonating asphalt with a sulfonating agent selected from the group consisting of sulfur trioxide, fuming sulfuric acid, chlorosulfonic acid and concentrated sulfuric acid to the causticized lignite within the range of 3:1 to 1:1. The lignite is not present when the asphalt is sulfonated. The mixture is present in an amount sufficient to reduce foaming and plastic viscosity without significantly affecting lubricity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {2}
}