Definition - What does MWD Tool mean?
The MWD tool is a tool used to take real-time directional surveys during the drilling of a wellbore. MWD uses magnetometers and accelerometers to analyze the azimuth and inclination of the borehole at that particular location and then transmit the data to the bottom of the surface. Thus, the location of a wellbore can be measured by conducting a series of surveys including the measurement of azimuth, inclination and toolface at appropriate intervals. These surveys are used mainly in the directional drilling.
Petropedia explains MWD Tool
MWD Tools have different uses such as to get information of the situation at the drill bit. It may include smoothness of the rotation, rotation of the drill string, downhole temperatures, type & intensity of vibration, torque, weight on the bit, measurement of the drill bit and the mud flow volume.
The extracted information can be used by the operator to drill the well properly and confirm that MWD tools, mud tools, LWD tools and others are used within the technical aspects to avoid tool failure. The MWD or the LWD tools can take measurements of function properties. The tools contain internal gamma ray sensors which measures natural gamma ray values.