This study examines the effects of change in the concentrations of monovalent and divalent ions in the polymer-contained surfactant solution on the macroscopic behavior of viscous-modified surfactant waterflooding in heavy oil reservoirs. Salts that are used in this set of floods were sodium chloride, magnesium chloride, and calcium chloride. The results indicate that four different ranges ...

A stochastic theory of limiting similarity is presented that attempts to quantify the relationship between tolerable niche overlap among competing species and the degree of environmental fluctuation. The theory is based on a heuristic analytical approximation that provides conditions under which a rare invadin species can increase in the presence of a community of established competitors. The m...

Steam injection has had a profound impact on the production of heavy crude oil. Steam, however, is inviscid compared to a viscous oil and is not the ideal displacement agent. Field studies and laboratory tests have shown that foaming the steam phase through the aid of a suitable surfactant in aqueous solution can achieve mobility control of injected gases and mitigate the effects of gravity ove...

Book The 82 ACS Colloid and Surface Science Symposium Page 1 of 321 Plenary Lecture I: Prof. Eric Kaler Presider: Orlin D. Velev North Carolina State University, Raleigh, NC Presider: Peter K. Kilpatrick University of Notre Dame, Notre Dame, IN 1. Micellar Networks Implications for Rheology and Biology Eric W. Kaler, Stony Brook University, Stony Brook, NY Many nonionic surfactants form micella...