Method of using overbased branched-chain alklyaromatic sulfonates as waterflood additives

Patent · Tue Jan 20 04:00:00 EST 1976

OSTI ID:7216017

Kerfoot, O C; Clark, C R; Kennedy, C D

The preparation of overbased branched-chain alkylaromatic sulfonates is described. The ratio of excess base to sulfonate by weight is 0.03 to 3.0. A surfactant slug was composed of an aqueous mixture of the reaction products in the formation of the sodium sulfonate and base (0.6 ratio). Berea cores were saturated with 1 percent sodium chloride brine, flooded with Blandol product (a highly refined mineral oil), and waterflooded with brine. Treatment by the surfactant slug was followed by brine, then an aqueous solution of sodium hydroxide, and driven by brine (2.1 percent PV oil was recovered). The addition of high molecular weight sulfonate (Petronate C) to the overbased anionic waterflood additives gave 11.6 percent PV oil.

• Assignee: Continental Oil Co.
• Patent Number(s): US 3933201
• OSTI ID: 7216017
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
ALKALI METAL COMPOUNDS
CHEMICAL PREPARATION
ESTERS
FLUID INJECTION
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM SULFONATES
SODIUM COMPOUNDS
SULFONATES
SULFONIC ACID ESTERS
SURFACTANTS
SYNTHESIS
WATERFLOODING
WELLS