An operator in South America had replaced third-party PCPs in all its 1,821 wells with SLB PCPs. Among these wells, 100 had no access to electricity, and the operator had retained natural-gas-powered motors mounted near the wellheads by the previous service provider to drive the downhole pumps. However, the motors were presenting multiple challenges, including
SLB proposed installing its most compact and high-capacity drivehead— the operator-friendly hydraulic VHGH-9.3T, designed for rodstring loads up to 9.3 metric tons [20,503 lbm]. The patented integral seal, bearings, and gear set are kept separate from the hydraulic system, preventing contamination and improving reliability. There are no exposed moving parts, and the compact, lightweight design and balanced lifting points simplify installation. In addition, the system is equipped with a control panel that facilitates torque adjustments.
As the third-party motors fail, the operator is replacing them with VHGH-9.3T driveheads. To date, 33 units have been installed. Rigorous torque control enabled by the driveheads has eliminated NPT associated with broken sucker rods. In addition, maintenance frequency, deferred production, interventions, and HSE incidents have all significantly decreased, resulting in greater operational efficiency, safety, and profitability.
