Oilfield Anisotropy : Its Origins and Electrical Characteristics

Across the many disciplines of the oil field, a nearly universal phenomenon is anisotropy —the variation of a property with the direction in which it is measured. Where anisotropy arises, convenient assumptions fall. Seismic reflectors appear at the wrong depth. Seismic lines don’t tie. Waterflood programs fail. Induction logs are misinterpreted and mistake water for pay. As producers seek a finer comb to draw through measurements of the earth, they are changing the status of anisotropy from unwelcome guest to hard-working collaborator. Advances in theory and computing