Mud Logging - Cutting sampling and description requirements
This article describes the main geological services: Cutting sampling and description requirements.
Across reservoir: every 5 ft, and non-reservoir every 20 ft.
Cutting samples shall be taken from the full width of the shakers so as to be representative of the interval drilled. When drilling at high ROP the drilling contractor shall assign a roughneck as a sample catcher.
Lithological analysis of the cuttings shall be performed on the washed samples with the aid of a reflected light microscope . . .