1. Underbalanced drilling borehole stability evaluation and implementation in depleted reservoirs, San Joaquin Field, Eastern Venezuela;Azeemuddin,2006
2. Underbalanced drilling, praises and perils;Bennion,1996
3. Horizontal underbalanced drilling in northeast Brazil : a field case history;Cunha,2001
4. An overview of underbalanced drilling applications in Canada;Falk,1995
5. Petroleum Related Rock Mechanics;Fjaer,2008