Abstract This review discusses surfactants used for chemical flooding, including surfactant-polymer flooding and alkali-surfactant-polymer flooding. The review, unlike most previous reviews in the field, has a surfactant focus, not focus on process. It deals with recent results, mainly from 2010 onward. Older literature is referred to when needed order put more findings into perspective.

the miscible displacement process appears to be an increasingly feasible method for the extraction of oil from depleted reservoirs. how­ever, there is a lack of fundamental understanding of how fracture geometrical characteristics impact the oil recovery efficiency in this type of enhanced oil recovery technique. in this work, a series of experimental tests were conducted whereby the n-heptane ...

In this paper, Steam Assisted Gravity Drainage (SAGD) is introduced and its advantages over ordinary steam injection is demonstrated. A simple simulation model is built and three scenarios of natural production, ordinary steam injection, and SAGD are compared in terms of their cumulative oil production and cumulative oil steam ratio. The results show that SAGD can significantly enhance oil prod...