This paper gives essential information on, two commercial, in situ combustiorf (ISC) projects in India, one commercial ISC project in Romania and one commercial ISC project in the USA. The ISC project at Suplacu de Barcau, Romania is the largest project,of its kind, and it has been in operation for 34 years as a dry ISC process. The Balol and Santhal projects in. India have been in operation for. more than seven years, and have been applied in a wet mode. Currently, these three projects produce more than 500 m(3)/day (3,450 bbl/day) from each project, while all three combined produce approximately 2,300 M-3/day (15,860 bbl/day). Additionally, the project operated by Bayou State Oil Corporation (BSOC) in Bellevue, Louisiana, USA produces 51 in m(3/)day (320 bbl/day). This total amount of 2,350 m(3)/day repsents the total amount of heavy oil produced by ISC today.