Method for controlling permeability of subterranean formations

US4282928A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• Charles J. McDonald · Midland, US
• John V. Van Landingham · Sapulpa, US
• Steven P. Givens · Midland, US

Key dates

• Filing date: Sep 17, 1979
• Grant date: Aug 11, 1981
• Expiry date: Sep 17, 1999

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B43/32
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

In the recovery of hydrocarbon materials from subterranean formations, the simultaneous production or loss of other fluids such as water is inhibited by the selective introduction into the subterranean porous structure of discrete spheroidal microgels of a water-swollen or water-swellable, crosslinked polymer such as crosslinked polyacrylamide.