Particle Drilling Technologies, Inc. Begins Catoosa Testing Program

HOUSTON, July 19 /PRNewswire-FirstCall/ -- Particle Drilling Technologies, Inc. (Nasdaq: PDRT) today announced that its Particle Impact Drilling (PID) system testing is expected to commence today as scheduled. During the past few days, the Company has mobilized its PID system to the Gas Technology Institutes' Catoosa facility outside of Tulsa, Oklahoma ("Catoosa"). The system has been adapted to the Catoosa drilling rig and a series of tests involving several versions of the PID drill bit will be used to drill through a variety of hard rock drilling intervals. This series of testing is expected to be completed on or around Friday, July 29, 2005 and the results will be communicated once the Company has fully evaluated the results of the testing program.

Particle Drilling Technologies, Inc., headquartered in Houston, Texas, is a development stage oilfield service and technology company owning certain patents and pending patents related to the Particle Impact Drilling technology. The Company's technology is designed to enhance the rate-of-penetration function in the drilling process, particularly in hard rock drilling environments.

Certain statements in this press release that are not historical but are forward-looking are subject to known and unknown risks and uncertainties, which may cause PDTI's actual results in future periods to be materially different from any future performance that may be suggested in this press release. Such risks and uncertainties may include, but are not limited to, PDTI's ability to raise equity capital, if necessary, and its ability to obtain equity financing on acceptable terms, if at all, a severe worldwide slowdown in the energy services sector and working capital constraints. Further, PDTI is a development stage company that operates in an industry sector where securities values are highly volatile and may be influenced by economic and other factors beyond PDTI's control such as announcements by competitors and service providers.