A study has been done on thermal injection β as an enhanced oil recovery - in heavy oil reservoir. Two types of thermal injection were discussed. These methods are cyclic steam stimulation and steam flooding. The simulation part was done using Eclipse 300 and literature data. Moreover, steam flooding technique was used in simulating the reservoir. It was confirmed that thermal injection is significant in heavy oil reservoir. It was shown that the viscosity is the main variable that affects the production rate and the recovery factor of the field. By decreasing the value of this variable the production rate was significantly increased. Using thermal injection increased the recovery factor from 3.75% to 56.5%
