DNP (Installation for Lowering Pumps into Wells)
The DNP installation is a heavy-duty well service unit designed for lowering and retrieving submersible pumps, tubing strings, and related equipment into deep wells. The system is mounted on a three-axle main trailer and features a spatial (lattice-type) mast, a high-capacity single-drum winch, and a diesel-mechanical drive. It is intended for oil, gas, and water well servicing operations where high load capacity, controlled lowering, and operational reliability are critical.
– Extended power generator for fully autonomous operation
– Reinforced winch drum and cable configuration
– Cold-climate or hot-climate adaptation
– Remote or assisted hydraulic control system
– Custom tooling for specific pump or tubing types
– Enhanced safety and monitoring systems
– Permissible load: 70 t
– Base chassis: 3-axle main trailer
– Mast type: spatial (lattice) structure
– Distance from rotary table to crown block: up to 12.5 m
– Casing pipe length: 9 m
– Generator power: minimum 16 kW
– Piston drilling pump pressure: 60 bar
– Derrick load capacity: 50,000 kg
– Service crew: 2 persons
– Conditional operation depth: up to 1,500 m
– Applicable drill pipe diameters: Ø 73 mm, 89 mm, 114 mm
– Operation diameter (max/min): from 1000 mm to 93 mm
– Winch: single-drum with planetary gearbox, equipped with mechanical and hydraulic braking for controlled lifting and lowering
– Winch drive: diesel-mechanical
– Maximum rope pulling force: 20,000 kg
– Rope winding speed: 1.0–1.25 m/s
– Rotary drive: diesel-mechanical
– Maximum rotary torque: 6,000 kg·m
– Rotary speed: 25–155 rpm
– Internal rotary feed inside the mast: 2 hydraulic cylinder
