Chemical Enhanced Oil Recovery has been around for more than 40 years and its production today represents about 25 % of world’s EOR total.  CEOR production is  increasing as experience is gained in its application in more oil fields, especially ones with viscous oils.  Even in today’s moderate oil prices, CEOR can accelerate and increase the ultimate oil that can be produced while reducing water handling, thus improving economics. This short class is intended for technical people and decision makers who want to consider CEOR options to maximize oil recovery from their fields. CEOR require more laboratory capabilities and is more complex than most other EOR and this will be explained. The characteristics of different types of CEOR will be discussed and solutions will be offered to mitigate risks. Several case studies will illustrate current world-wide applications.