86474905
Dec 9, 2014
Apr 26, 2016
chemical compositions used for the treatment of wells, namely, well stimulation, well remediation, drilling wells, cementing, hydrogen sulfide mitigation, demulsification, and oil recovery
ChemicalsDrilling and casing equipment in the nature of downhole tools, namely, drilling motors, vibration tools, shock subs, drilling jars, drilling collars, stabilizers, roller reamers, centralizers, and float equipment; electrical submersible pumps, sucker rod pumps, and pump valves
Machinery