Logging while drilling
Revision as of 21:16, 3 December 2015 by Molyneux (talk | contribs) (Molyneux moved page Logging while drilling (LWD) to Logging while drilling)
Sensors integrated into the drilling assembly that transmit data while drilling other than guidance data (measurement while drilling (MWD)) is considered LWD. Data can include standard measurements of the formation (electric logs such as gamma ray, resistivity, or porosity), drilling parameters (e.g., downhole torque, weight on bit, temperature, or pressure), or geophysical information (look-ahead seismic profiles). Data can be transmitted to the surface or stored for later retrieval.
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