This report gives an overall description of a Mobility Control Test of CO/sub 2/-Foam, performed in Pennzoil's Rock Creek Field of Roane County, West Virginia. The test did not produce any oil and was unfortunately not as definitive as had been wished. In particular, it did not give an unequivocal answer to the major question that had been asked - ''What is the effectiveness of such a simultaneous injection of dense CO/sub 2/ and surfactant solution in suppressing viscous instability of the displacement front in order to improve the performance and efficiency of CO/sub 2/ floods.''Despite this relative silence with respect to the most important question, the test did yield some results which can be of use to the industry. The first of these is that it is possible to inject dense CO/sub 2/ and surfactant solution simultaneously into a regular injection well. The reduced injectivity can be interpreted as due to reduced mobility of CO/sub 2/-foam, as an injection fluid with an apparent viscosity about 2 1/2 times that of water. The second test result of some interest is that the simultaneous injection of surfactant with the CO/sub 2/ was apparently successful in retarding the formation of viscous fingers and early breakthrough of CO/sub 2/ into a producing observation well only 75 feet away. The report gives details on related research and operating projects, on the design of all features of this test, on the chronology of injection and sampling, and on the test results. In addition, three extensive appendices give descriptions of related computer calculations of expected flooding patterns, of results to be expected from the Point Dilution Method and in the distribution of tracer concentration in the formation after a period of radial flow from the injection well. 25 refs.