This report is the twenty-fourth report on the progress of the Rock Creek carbon dioxide project in Roane County, West Virginia. Designed, developed, and operated by Pennzoil Company, this project will demonstrate the feasibility of miscible carbon dioxide oil recovery in the Rock Creek Big Injun Field. A successful demonstration of this process will lead to a field wide commercial development. Also, the technical success of this project would be utilized in the development of other miscible carbon dioxide oil recovery projects in numerous fields within the Appalachian area. No significant delays were incurred in the project during the fourth quarter of 1977. The project progressed satisfactorily with the only schedule extension being that of the carbon dioxide handling system as discussed in the last quarterly report. The water supply and handling system performed trouble-free throughout the quarter. The Henderson water source continued to provide an adequate water supply for the entire project. Water injection proceeded on schedule into the 19 injection wells. Tubing strings were run on packer in the two wells with apparent casing leaks. This solution proved effective. The progress of the project and the corresponding cash outlay is depicted pictorially on Figure No. 1. Figure No. 2 is a map of the project area.