The use of coiled tubing (CT) to conduct well intervention services is well established. With improving technology, the use of CT has continued to grow at an average rate of ten percent per year, even as other services decline. The National Energy Technology Laboratory (NETL) has historically and currently sponsors and directs a number of CT related research projects as part of the U.S. Department of Energy (DOE) goal to develop technologies to recover a higher percentage of domestic oil deposits and slow the decline of U.S. oil production. A recent study was conducted to help formulate a road map for future co-funded research in coiled tubing, coiled tubing drilling (CTD), slimhole/microhole and related technologies. The thrust of the first phase was to look at this relatively new (CTD) industry: identify the level of activity, the dominant service providers, applications and geographical distribution of activity. Second, to examine, in some detail the use of coiled tubing for grass roots drilling ? the advantages, disadvantages, limitations, costs and why it has flourished in Alberta Province and not elsewhere, particularly the lower 48 states. Finally, the results of a technology assessment was reported: identifying the cutting edge applications that are out in the field and what research is underway with Joint Industry Partners, universities and technology companies, some DOE co-funded, much of it not. Information was gathered through available public sources and through private discussions with a spectrum of industry experts. The second phase of the study focused on DOE funded research for coiled tubing generally, and coiled tubing drilling in particular. The related interest areas of slimhole/microhole drilling, high speed drilling and monitoring gas-flooded oil reservoirs with vertical seismic profiling were also examined. The research in these areas co-funded by DOE in the mid-1990s was general in nature. This is in contrast with the focused research in the above topics begun in the last two years. An assessment of industry acceptance and potential market was made for coiled tubing well intervention; coiled tubing conveyed drilling of slimholes/microholes for shallow production, exploration logging, lateral extension, and reservoir monitoring. In this phase as well, information was gathered from both public sources and private discussions with the principal investigators of DOE co-funded projects and other industry experts.