The mathematical models of drilling gas flow based on the continuous medium and pore-fracture dual media were established according to the law of mass conservation, aiming to derive a gas flow model ...

To elucidate the distribution law of the multiphase coupling slag discharge flow field in gas-lift reverse circulation during drilling shaft sinking, a numerical analysis model of gas–liquid–solid ...

Mathematical modeling demonstrates that nozzle distribution on drillbits affects the performance of the drilling fluid flow from the bit. This article is about the internal flow of nozzles on a rotary ...

Drilling deeper, longer and more challenging wells has been made possible by improvements in drilling technologies, including more efficient and effective drilling fluids. Drilling fluids, also ...

Drilling supervisors at GDF Suez E&P Deutschland GMBH have used a visual road map to control drilling operations since March 2008. The Leer Z5-5 is one of the tight gas wells recently drilled by GDF ...