Chlorides – Water Based Mud Testing


This test may be used for determination of Chloride content in both fresh and salt water muds.

The Chloride level must be maintained at the level specified in the drilling fluids programme.


Freshwater and Saltwater Muds: mg/l Cl- +/- 10

Sources of Error

Silver Nitrate has a limited shelf life and must be kept in a darkened container. It should be regularly standardised.


#1 Donnie Alexander 2015-04-21 19:27
When mud is tested before being put in frac tank and the chlorides read 800 at the drilling location, why will the chlorides read different once the mud is brought to a mud disposal