Modern technologies of directional drilling: comparative characteristics of PDM and RSS

This article presents a comparative analysis of two directional drilling technologies - the Positive Displacement Motor (PDM) and the Rotary Steerable System (GeoPilot). It examines the design features, operating principles, and performance characteristics of both systems, along with their advantages and limitations under complex geological conditions. Particular attention is paid to trajectory control accuracy, vibration resistance, and overall drilling efficiency. The analysis demonstrates that GeoPilot technologies, based on an eccentric ring system and advanced electronics, provide more stable and precise directional control without the need for slide drilling, typical of PDMs. The conclusions help define the optimal selection criteria for drilling equipment depending on specific drilling tasks and environmental conditions.