Steering Unit

Product Details

System Overview

The Baker Hughes AutoTrak™ G3 steering tool represents the industry benchmark of third-generation push-the-bit rotary steering technology. Adopting a Full-Rotation Steering mechanism, it enables stepless build-up rate control (0–15°/30m) while the drill string rotates 360°. The system integrates a high-precision near-bit measurement sub (<1.5m LWD), supporting real-time closed-loop optimization of geosteering and engineering parameters (ROP, WOB). It is particularly suitable for ultra-long horizontal sections (>3000m) in shale oil fields, extended-reach drilling (ERD), and thin reservoir (<2m) development.

Classification	Details
Core Technical Features	1 Vector Thrust System Three independent electro-hydraulic actuators: - High-frequency servo valves (response time <50ms) driving tungsten carbide steering pads - Maximum single-pad thrust 28kN (programmable pressure compensation) Dynamic bias control: - FPGA-based PID algorithm for downhole toolface control (accuracy ±0.8°) - Rotation compensation technology (maintains thrust vector stability at 200RPM)
	2 Near-Bit Measurement System Five-parameter real-time monitoring: - Azimuthal gamma (16-sector imaging, 1° resolution) - Annular pressure (0–200MPa, accuracy ±0.1%) - Near-bit inclination (MEMS inertial unit, accuracy ±0.1°) High-speed data transmission: - Electromagnetic short-range communication (2.4GHz, 256kbps) - Real-time synchronization with upper MWD (delay <0.5s)
	3 Extreme Environment Resistance Design Material system: - Diamond-like carbon coating on steering pads (wear rate <0.01mm/100h) - Nickel-based alloy hydraulic lines (resistant to 3000ppm H₂S) Thermal management: - Silicone oil circulation cooling system (continuous operation at 175℃) - Phase-change material (PCM) temperature control in electronics compartment (peak tolerance 200℃)
Technical Innovation Highlights	Intelligent anti-sticking algorithm: Identifies stick-slip tendencies via vibration spectrum (0–500Hz) and adjusts thrust distribution automatically Adaptive lithology response: Optimizes build-up rate dynamically using LWD resistivity (ADN™) Modular quick-release design: Hydraulic unit replaceable within 30 minutes at wellsite
Typical Operational Performance	ROP enhancement: Achieves average ROP of 35m/h in Permian Basin shale (40% higher than conventional tools) Trajectory control accuracy: Vertical depth fluctuation <±0.3m in South China Sea deepwater horizontal sections (100% target zone hit rate) Reliability index: MTBF reaches 1500 hours (API 19G certified)
Technical Evolution Directions	Digital twin integration: Links with DecisionSpace® cloud platform for downhole virtual simulation AI steering optimization: Machine learning for lithology identification (based on near-bit vibration spectra) Green hydraulic system: Biodegradable hydraulic oil (compliant with OSPAR environmental standards)
Product Operation Status	This product has accumulated over 8 million meters of global operations, setting a record of 4265m single-run footage in the Sichuan South shale gas field. Its trinity architecture of "rotation+thrust+measurement" has become the design paradigm for current rotary steerable systems. The latest G5 version has achieved millimeter-scale geological resolution collaboration with LWD imaging (UltraTRAC™).