Almost every well constructed, and virtually all drilled wells, use casing to support the hole and allow access to the producing horizon, be it oil, gas, water or most anything else under the ground.
The use of graphite in thermally-conductive grouting applications has exploded in recent years with more and more drillers abandoning the use of sand either completely or partially.
In the first two columns I wrote about this job, we attempted to spud down a 4-inch well on a piece of property where a customer was going to move his house.
In chapter one of this long, drawn out tale of the toughest job I've ever had, we had spudded a casing down on a vacant property where a house was going to be moved.
The biggest difference between drilling fluids for vertical rotary mud drilling and horizontal directional drilling (HDD) applications is in the requirements for gel strength.
Today, more companies have begun to recognize that their employees, whether hourly or salaried, benefit immensely from participating in supplemental education opportunities.