Drilling Fluids QA/QC - Quality Control of Freshwater
The following procedures shall be carried out, or fully supervised, by the Mud Engineer to determine the salinity of freshwater delivered to the rig. This is essential to prevent inadequate yielding of bentonite and unwanted acceleration of freshwater cement slurries.
The salinity level determination of the water should be carried out using the DS meter and then checked with the chemical analysis if high salinity levels (>200 ppm NaCI) are indicated.
The mud engineer shall check the water quality for chloride and calcium . . .