Inhibiting wax deposition from a wax-containing oil

Patent · Tue Mar 06 00:00:00 EST 1990

OSTI ID:6843905

Zilch, H E

This patent describes a method for inhibiting was deposition in an oil well producing a wax-containing oil. It comprises: injecting down-hole into the oil-pool at the base of the well a wax-inhibiting amount of a copolymer of between about 62 and about 66 weight percent ethylene and about 34 and about 38 weight percent vinyl acetate, aid copolymer having an average molecular weight below about 35,000.

• Assignee: Union Oil Co. of California, Los Angeles, CA
• Patent Number(s): US 4905762; A
• Application Number: PPN: US 7-292386A
• OSTI ID: 6843905
• Resource Relation: Patent File Date: 30 Dec 1988
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
CORROSION INHIBITORS
CHEMICAL COMPOSITION
OIL WELLS
SCALE CONTROL
PETROLEUM
DEWAXING
ACETATES
ADDITIVES
COPOLYMERS
DEPOSITS
ETHYLENE
FLUID INJECTION
WAXES
ALKENES
CARBOXYLIC ACID SALTS
CONTROL
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
POLYMERS
SEPARATION PROCESSES
WELLS
020300* - Petroleum- Drilling & Production