Is underbalanced drilling is suitable for shale gas?

Although it is not typical, if natural gas is recovered from the well, it can be reinjected into the well to establish underbalance, resulting in the most cost-effective solution for underbalanced drilling. read more

Underbalanced drilling, or UBD, is a procedure used to drill oil and gas wells where the pressure in the wellbore is kept lower than the static pressure then the formation being drilled. As the well is being drilled, formation fluid flows into the wellbore and up to the surface. read more

Home / 2010 / Underbalanced drilling helps PDO find gas in tight reservoir after 11 unsuccessful wells Deep-gas exploration wells in the Fahud Salt Basin in North Oman were traditionally drilled with high mud weights. read more

Antech completes underbalanced drilling operations in US shale gas reservoirs AnTech Ltd announced that it has completed two successful drilling operations with the COLT, a coiled tubing drilling (CTD) bottom hole assembly (BHA) designed for the re-entry and thru-tubing markets. read more