I have had great success drilling around the world with multiple types of mud drilling in water well, exploration and construction. The success came from understanding the basic components of drilling fluids.
As usual, winter — or the slow season — is the time most drillers take the time to maintain their equipment in order to get ready for the peak season. One of the main parts that usually needs attention is the mud pump.
Aqueous drilling through clay has always been a potentially difficult situation and, over the years, sundry solutions have been presented to combat this sticky enemy.