Lignosulfonates as sacrificial agents in oil recovery processes

Patent · Tue Feb 08 04:00:00 EST 1977

OSTI ID:7119809

Kalfoglou, G

A process for producing petroleum from subterranean formations is disclosed wherein production from the formation is obtained by driving a fluid from an injection well to a production well. The process involves injecting via the injection well into the formation an aqueous solution of lignosulfonate salt as a sacrificial agent to inhibit the deposition of surfactant contained in a micellar dispersion (microemulsion) on the reservoir matrix. Normally the process would be carried out by first injecting the lignosulfonates into the formation through the injection well and following them with a micellar dispersion which may contain lignosulfonates. The micellar dispersion would then be followed by a drive fluid such as water to push the dispersion to the production well. 9 claims.

• Assignee: Texaco, Inc.
• Patent Number(s): US 4006779
• OSTI ID: 7119809
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
AQUEOUS SOLUTIONS
DISPERSIONS
ENHANCED RECOVERY
ESTERS
FLUID INJECTION
MICELLAR SYSTEMS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM SULFONATES
SOLUTIONS
SULFONATES
SULFONIC ACID ESTERS
SURFACTANTS
WELL STIMULATION
WELLS