Geosteering Resistivity Tool Specifications

地质导向电阻率仪器规范
操作规范s
测量类型	LWD Average Resistivity Log (ResB), and Real-time Resistivity Vector : Magnitude (ResV) + Angle (ResA), and Gamma-ray or Focused Gamma
平均电阻率范围/精度	0.2 to 20,000 Ω-m., +/-10% (worst-case), +/-1.5% (if borehole is on-gauge)
薄层决议	17 cm / 6.75 inches
最高温度	160 °C / 320 °F
最大压力	1400 bar / 20,000 PSI
探测并行岩层	> 1 meter / 40 inches with >10:1 resistivity contrast
深度调查 (Invasion Tolerance)	0.64 meter / 25 inches diameter @ 50% point on PGF curve
内部存储器	400 hour (16.7 day) log including all resistivity, gamma, inclinometer and diagnostic data when data are recorded every 4 seconds. The acquisition rate is programmable from 1 – 60 seconds. Memory is downloaded through a high-speed port.
4-3/4 inch 版本机械规格
仪器长度	3.47 meters / 11.34 feet
标称外径	121 mm. / 4.75 inches
磨损带外径	140 mm. / 5.5 inches
仪器连接	A.P.I. 3.5 inch IF, box upper/pin lower
最大泥流量	1.3 cu.meters/minute (330 Gals./min.) @ 15 m./sec. (50 ft./sec.) velocity
最大折线严重性	Rotating 15°/30 m. (100 ft.), Sliding 20°/30 m. (100 ft.)
电气连接	6-pin Rotary, male upper/female lower
工具面/定向包取向	Muleshoe Helix built into upper box connection
6-3/4 inch 版本机械规格
仪器长度	3.52 meters / 11.54 feet
标称外径	165 mm. / 6.5 inches
磨损带外径	190 mm. / 7.5 inches
仪器连接	A.P.I. 4.5 inch IF, box upper/pin lower
最大泥流量	3.3 cu.meters/minute (870 Gals./min.) @ 15 m./sec. (50 ft./sec.) velocity
最大折线严重性	Rotating 10°/30 m. (100 ft.), Sliding 15°/30 m. (100 ft.)
电气连接	6-pin Rotary, male upper/female lower
工具面/定向包取向	Muleshoe Helix built into upper box connection
Measurement-Point position from Lower Shoulder
Resistivity	0.715 meters / 28.16 inches
Gamma-ray	1.54 meters / 60.62 inches
Power Requirements
电源	External Lithium Battery Pack (14.4V to 28.8V nominal)
电池寿命	200 hours with one 28.8 volt Battery Pack (50% duty cycle)
Real-time Output Data
Serial ASCII format	+5V., 9600 Baud