Drilling spools are manufactured in various size's and pressure ratings as per API 16A. Buyers may specify height & outlet connection ( Studded or Threaded). Drilling spools are designed to allow smooth circulation of mud in the well and online BOP hook up.

Diverters provide the safe venting of shallow gas flows. They range from 21 1/4 to 30 inches. with working pressure ranging from 500 to 2,000 psi.

A diverter is a safety system that reroutes a well fluid flow away from the rig. Shallow gas is allowed to flow until the well is bridged over or killed by pumping in heavy mud and is intended for use when there is danger of penetrating pressurized shallow gas zone, while the casing shoe strength may not be sufficient to contain shut-in pressures.