J. H. Cohen

Field testing advanced geothermal turbodrill (AGT). Phase 1 final report

W. C. Maurer, J. H. Cohen, 1999 .

High-power TSP bits

William C. Maurer, P. A. Westcott, J. H. Cohen, 1994 .

Investigation of the feasibility of deep microborehole drilling

D. S. Dreesen, J. H. Cohen, 1997 .

Reducing maintenance costs. Self-contained repair system developed for gas piping

M. L. Wilkey, J. H. Cohen, 1988 .

High-power downhole motor

William C. Maurer, C. R. Evans, P. A. Westcott, 1995 .

High-pressure pump for jet-assisted drilling

J. H. Cohen, J. Aslakson, L. Lee, 1995 .