Logging While Tripping us used to evaluate formations in the oil and gas, mining and exploration industries; LWT evaluates the formations as the rig crew trips the pipe out of the well; LWT tools use a radioactive source that is protected inside the sub; Tools for Logging While Tripping include but are not limited to Gamma Ray, Compensated Neutron Logs, Dual Induction log - Low Temperature and Dual Induction Log - Standard Temperature Pressure Version; The LWT sub is installed in the Bottom Hole Assembly; When drilling begins and logging depth reached, the LWT tools are deployed inside the LWT sub; The section is logged as the pipe is tripped out of the well