The objective of this project is to build and test a research prototype of a 20 to 30 bits/second MWD mud-pulse telemetry system. At current telemetry rates of 1 to 3 bits/second, the driller must be very selective about what drilling data is transmitted. This lack of information makes it more difficult to optimize the drilling of wells. Halliburton has demonstrated that a 30 bits/second mud-pulse can be recovered in a 10,000 foot flow loop.