Underbalanced drilling has become an increasingly popular application for oil and gas companies around the world primarily due to a renewed interest in preventing formation damage during the ...

Drilling underbalanced, or near balancedwith lightweight drilling fluids, has practical applications offshore. Underbalanced drilling (UBD), a technique in which the hydrostatic head of drilling ...

Though not as common as overbalanced drilling, underbalanced drilling is achieved when the pressure exerted on the well is less than or equal to that of the reservoir. Performed with a light ...

Unocal Thailand Ltd. has found that a wireline anchor can effectively reduce the potential of perforating guns being blown up or down the hole while perforating underbalanced in slimhole ...

Sept - Oct 2004 Reservoir analysis during underbalanced (UB) drilling cuts costs and yields increases in both production and reserves, says Halliburton's Underbalanced Applications (UBA) group. An ...

Sharjah National Oil Corporation (SNOC) has awarded a framework agreement to SLB (erstwhile Schlumberger) to execute its new underbalanced coiled tubing drilling (UBCTD) project, the hydrocarbon major ...