A new type of parallel operation unit for excavating and supporting anchors is proposed to address the issue of imbalanced excavation anchor ratio in coal mines. By equipping a straddle type anchoring ...

During the drilling operations and because of the harsh downhole drilling environment, the drill string suffered from downhole vibrations that affect the drilling operation and equipment. This problem ...

Many types and sizes of drilling machines are used in manufacturing. They range in size from a simple bench mounted sensitive drill press to the large multiple-spindle machines able to drive many ...

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 ...