Oil and gas deposits are present in the strata of the Earth's crust and these hydrocarbon resources are accessed by drillingvertical and horizontal wells. In order to minimize risks and optimize results a better understanding of the strata around the proposed target or "payzone" is required. Direct observation of these sub surface formations is not possible, so, various tools are lowered into the wellbore to map the path of the well and to record the physical properties of rock surrounding the wellbore.
Measurement While Drilling (MWD)
Measurement While Drilling is the system by which the wellbore trajectory is logged and monitored continuously during the drilling process. The use of MWD has increased with the development of the unconventional exploration sector as it enables the drilling of the wellbore in the planned direction so targeted reservoir formations can be tapped accurately. MWD tools are used as part of the Bottom Hole Assembly (BHA) and powered either by lithium batteries or a turbine that produces electric power by harnessing the kinetic energy of drilling fluid.
Measurement While Drilling (MWD)
Measurement While Drilling is the system by which the wellbore trajectory is logged and monitored continuously during the drilling process. The use of MWD has increased with the development of the unconventional exploration sector as it enables the drilling of the wellbore in the planned direction so targeted reservoir formations can be tapped accurately. MWD tools are used as part of the Bottom Hole Assembly (BHA) and powered either by lithium batteries or a turbine that produces electric power by harnessing the kinetic energy of drilling fluid.
