microsecond per foot (a measure of slowness). To compensate for the variations in the drilling mud thickness, there are actually two receivers, one near and one far. This is because the travel time within the drilling mud will be common for both, so the travel time within the formation is given by:

where = travel time to far receiver; = travel time to near receiver.

If it is necessary to compensate for tool tilt and variations

1.Previous
3.Next