Stepan Company

Monsanto Company

Thomas Edward Waldman

William Dennis Mcghee

Dennis Patrick Riley

Patrick Shane Wolfe

John C Hutchison

Ramakrishna Ravikiran

Kenneth Walter Ruettimann

Arthur John Solodar

Mark Dana Paster

A process for recovering oil from an oil-bearing formation comprises introducing into said formation an aqueous composition comprising at least one sulfonated derivative of one or more internal olefins, said internal olefins being characterized by having low amounts of tri-substitution on the olefin bond, said sulfonated derivative being obtained by sulfonating a composition comprising internal olefins of the formula:RRC&#x2550;CRRwherein R, R, Rand Rare the same or different and are hydrogen or straight- or branched-chain, saturated hydrocarbyl groups and the total number of carbon atoms of R, R, Rand Ris 6 to 44 with the proviso that at least about 96 mole percent of Rand Rare straight- or branched-chain, saturated hydrocarbyl groups and at least about 96 mole percent of Rand Rare hydrogen. Further provided are compositions for use in recovering oil from an oil-bearing formation which comprise the sulfonated derivatives of one or more internal olefins having low amounts of tri-substitution on the olefin bond.

Sulfonated internal olefin surfactant for enhanced oil recovery

Growing community of inventors

Aurora, CO, United States of America

Thomas Edward Waldman