The objective was to learn how to avoid or minimize formation damage due to CO/sub 2/ injection processes. The study is to determine the types of chemical and physical changes that can occur in carbonate or other reservoirs because of injected carbon dioxide (C/sub 2/) and/or its chemical additives and the effects on oil recovery due to those changes. During 1980, significant progress was made in determining possible mechanisms of damage and in describing them using theory. Preliminary experimental results have permitted a well defined experimental plan to be developed. Most of the apparatus has been designed and assembly of some systems has been completed. A literature search found no documented reports of CO/sub 2/ damage to oil reservoirs. The search was then expanded to include studies relating to our proposed damage mechanisms. Over 100 references are presented with abstracts, author index, and subject category.