Combined metal and elastomer seal

Combined miscible drive for heavy oil production

Combined multiple solvent and thermal heavy oil recovery method

Combined multiple solvent miscible flooding water injection...

Combined nitrogen generation system and well servicing fluid...

Combined notching and jetting methods and related apparatus

Combined piezo-meter and inclinometer casing

Combined power tong having integrated mud suction and thread...

Combined pressure testing and selective fired perforating...

Combined replacement drive process for oil recovery

Combined rod guide and rod rotator device

Combined seal head and pump intake for electrical...

Combined sealing and gripping unit for retrievable packers

Combined shut-in and back circulation tool

Combined stabilizer and reamer for drilling well bores

Combined steam and vapor extraction process (savex) for in...

Combined thermal and solvent stimulation

Combined three-in-one fracturing system

Combined well casing spider and elevator

Combustion air injection well