Classification

Subitem

Technical Parameters/Description

Core Technical Features

1 Azimuthal Gamma Detection System

Detector Array

16-sector NaI(Tl) crystal detectors, energy resolution 7%@662keV; dynamic range 0-1000 API, nonlinear error <±2%

Sampling Characteristics

5cm vertical sampling interval (4× improvement over conventional LWD); 22.5° azimuthal resolution, 4 full rotations scanned per second

2 Near-Bit Dynamic Measurement

3-Axis Inertial Navigation

MEMS gyroscope (bias stability 0.1°/h); inclination measurement accuracy ±0.15° (0.5m from bit)

Synchronized Drilling Parameters

WOB/torque measurement (range 0-50kN/±5kN·m); vibration spectrum analysis (0-200Hz bandwidth)

3 Extreme Environment Adaptability

Pressure-Resistant Design

175MPa pressure housing (API 19G compliant), titanium alloy protector (50g shock resistance)

Thermal Management

High-temperature electronics (HT-200 grade), heat pipe assisted cooling, continuous operation at 150°C

 Technological Innovations

Intelligent Formation Correlation

Machine learning algorithms for automatic marker bed identification

Real-Time Structural Interpretation

3D well trajectory projection combined with formation dip inversion

Rapid Interface Integration

Seamless data fusion with AutoTrak rotary steerable system (<0.2s latency)

Typical Operation Performance

Thin-bed Identification Capability

0.6m thin reservoir drilling success rate of 92% in Ordos Basin tight oil layers

Response Speed

3-5m ahead of conventional LWD in detecting formation interface changes

Reliability Index

MTBF 1200 hours (validated in 1000ppm H₂S environment)

Technical Evolution Direction

Spectral Gamma Expansion

Real-time analysis of K/U/Th element contents

Fiber Optic Sensing Integration

Distributed temperature/vibration synchronous monitoring

Digital Twin Application

Real-time geological modeling with DecisionSpace platform