Definition - What does Thread Compound mean?
Thread compound, also known as pipe dopes, is an anti-seizing compound that is applied to drill rods to prevent them from seizing. The compound used usually is a high-pressure, copper-petroleum based grease.
The compound can also be used to treat the threads on threaded well screen or casing. It has been found that many of the equipment failure occurring in HDD happens due to the insufficient or improper use of thread compound.
Thread compound ensures smooth attachment and removal of pipe connections, preventing damage to the tools.
Trenchlesspedia explains Thread Compound
Drill rods are an integral part of the drilling equipment and their performance will impact the project. A healthy drill string can only be maintained with the use of proper thread compounds and lubricants.
Thread compounds serve many functions such as reducing vibration, protecting metal surfaces of the thread, providing a good seal to prevent leaks, protection of the mating metal surfaces, and increases resistance to rust and corrosion.
A thread compound is formulated with a combination of powdered solids, grease, lubricating fluid, and soluble additives. Solids present in thread compound lubricants are lead, copper, zinc, graphite, muscovite, talc, calcium fluoride, calcium carbonate, and polytetrafluoroethylene (PTFE).
Torque, temperature requirements, environmental regulations, connection types are some of the factors to be considered while choosing a thread compound.