Define mud log unit-time lag-mud circulation?

- Lag time: the time mud takes from mud tanks to surface

- Mud Circulation: the way mud takes from mud tanks through flow

lines, pipes, then go back again to mud tanks

- Mud logging unit: a unit servicing mud logging operations

 , mv

Mud logging unit is a well site laboratory for geologist called mud logger to examine the cutting from the whole and identify the production zone .Lag time is define as the time taken by the mud to complete a cycle form mud tank to bottom of the whole and than to mud tank. also refer as time taken by the rock cutting to reached on the surface from the bottom of the hole