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 MeasurementsSpecifications
Measurement TypeMultiple frequency and spacing Phase and Amplitude electromagnetic wave propagation
Frequency2MHz Programmable with 1 MHz option
400kHz Programmable with 1 MHz option
Range0.2 – 2,000 ohm-m
Accuracy+/- 2% to 50 ohm-m
+/- 10% to 200 ohm-m
Repeatability1% measurement / 0.05 Degrees phase (2-ohm)
Vertical Resolution8” Typical
Depth of InvestigationTypical 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 – Operating175 °C
Temperature – Survival200 °C
Pressure Limit20,000 psi
Shock1,000g 0.5mS half sine
Vibration20G RMS 30-300Hz
Memory Capacity400 Hours
Power SupplyLithium Battery or Mud Turbine
Tool Outside Diameters3 ½”, 4 ¾”, 6 ¾”, 8 ¼”, 9 ½”