Electromagnetic Wave Resistivity LWD
METC electromagnetic wave Resistivity logging while drilling (LWD) is a measurement
Our resistivity follows two operating frequencies of 2MHz and 400KHz for
Our resistivity can provide real-time boundary detection signal imaging or
It can effectively avoid straying
Electromagnetic Wave Resistivity LWD Features
Larger effective dynamic range of the signal and deeper the depth of boundary
Automatic compensation for borehole and temperature, high measurement
Symmetric compensation for directional electromotive force enables strong
Easy to operate, modular design, and strong expandability.
Independent or combined use with other drilling instruments.
Electromagnetic Wave Resistivity LWD Specifications
Outer Diameter : Ø120mm (4 ¾”); Ø172mm (6 ¾”); Ø210mm (8 ¼”)
Antenna Layout : 4 Launching and 2 Receiving; Symmetrical
Curve : 8 Compensated Multi-depth Curves
Working Frequency: 400Khz ; 2Mhz
Body Material: P550 (AT, SBO) 15-15 (US, Carpenter)
Length : 3.6m
LWD Resistivity 400Khz Parameters
Range (Phase RT): 0.1-1000Ω.m
Accuracy (Phase RT): ±1 % (0.1-25Ω.m); ±0.5mmho/m (>25Ω.m)
Range (Amplitude RT): 0.1-200Ω.m
Accuracy (Amplitude RT): ±5 % (0.1-10Ω.m); ±5mmho/m (>10Ω.m)
Vertical Resolution: 30cm
LWD Resistivity 2Mhz Parameters
Range (Phase RT): 0.1-3000Ω.m
Accuracy (Phase RT): ±1% (0.1-50Ω.m); ±0.5mmho/m (>50Ω.m)
Range (Amplitude RT): 0.1-500Ω.m
Accuracy (Amplitude RT): ±2% (0.1-25Ω.m); ±1mmho/m (>25Ω.m)
Vertical Resolution: 20cm
Distance of Zero Mark : 2.3m
Other Parameters
Measurement Range (Azimuth Gamma): 0-500API
Measurement Accuracy (Azimuth Gamma): ±5%
Sensitivity (Azimuth Gamma) : 1.5CPS/API
Measurement Range (Near Bit INC.): 0°-180°
Measurement Accuracy (Near Bit INC.): ±0.2°
Detection Radius: 30cm
Vertical Resolution: 20cm
Distance of Zero Mark : 1.2m