MFPWR Resistivity
MFPWR Resistivity® is a spatially compensated, dual frequency (2 MHz & 400 kHz), dual spacing device designed for wireline equivalent LWD services in all well types.
Advantages
- MFPWR Resistivity® is an evolution of the current well established and field-proven single frequency PWR Resistivity® system
- Applications include: geosteering, correlation, casing point selection, logging while tripping & reservoir evaluation
- Operates in all mud types including oil-based and salt-saturated and provides real-time resistivity to surface via mud pulse or EM transmission
Features
- Quad Transmitter I Dual Receiver arrangement provides 16 individual resistivity measurements which are combined to produce 8 compensated measurements
- 3 curves transmitted in real time (user selectable)
- 5 additional curves available from tool memory
- Tools available in 3 ½” , 4 ¾”, 6 ¾”, 8 ¼” & 9 ½” sizes
- Tools are powered by Lithium Thionyl Chloride Batteries which can be replaced at the rig site or by RMS/Strata Turbine Generator
Specifications
Resistivity Measurements | Specifications |
---|---|
Measurement Type | Multiple frequency and spacing Phase and Amplitude electromagnetic wave propagation |
Frequency | 2MHz Programmable with 1 MHz option 400kHz Programmable with 1 MHz option |
Range | 0.2 – 2,000 ohm-m |
Accuracy | +/- 2% to 50 ohm-m +/- 10% to 200 ohm-m |
Repeatability | 1% measurement / 0.05 Degrees phase (2-ohm) |
Vertical Resolution | 8” Typical |
Depth of Investigation | Typical at 10 ohm-m 2 MHz Phase 26” Near Measurement 37” Far Measurement 2 MHz Ar 36” Near Measurement 49” Far Measurement 400 kHz Phase 40” Near Measurement 53” Far Measurement 400 kHz Phase 60” Near Measurement 76” Far Measurement |
Temperature – Operating | 175 °C |
Temperature – Survival | 200 °C |
Pressure Limit | 20,000 psi |
Shock | 1,000g 0.5mS half sine |
Vibration | 20G RMS 30-300Hz |
Memory Capacity | 400 Hours |
Power Supply | Lithium Battery or Mud Turbine |
Tool Outside Diameters | 3 ½”, 4 ¾”, 6 ¾”, 8 ¼”, 9 ½” |