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Magnetic Multishot


Overview

North Gyro

This Oilfield Multishot Survey Tool represents a new survey tool development utilizing a three axis Silicon accelerometer / magnetometer set to measure downhole surveying parameters and borehole temperature on a timed basis. The multishot tool provides definitive survey information, corrected for magnetic interference from the drilling assembly, before the well is cased. The tool is available in a number of configurations – of which the 1 3/8" diameter version will fit within a thermal heat shield in a 1 ¾" outer pressure housing


Sensor Specification

Inclination Range 00 to 1800
Inclination Spread 0.250
Azimuth Spread 2.00 (Inc >100 Dip < 700)
Tool Face Spread 1.50 (Inc >100 Dip < 700)
Operating Temperature -100 C to +1200 C (2480 F)
Survival Temperature -300 C to +1350 C (2750 F)
Thermal Temperature 3150 C to (6000 F) = 4 hours
Calibrated Op Range 00 C to 1200 C
Max Hold Off Time 200 hours
Shot Capicity 3700 to 5000 shots
Parameters Sampled Gx Gy Gz Bx By Bz Temp
Shock Qualification Instrument Length 500G 1ms on three axes 5000 impects per axis 42.9~ / 1089mm max
Instrument Diameter 1.04~ / 26.4mm

Applications and Benifits

  • Enhanced rugged oilfiels design which has been well proven in harsh drilling envioirment
  • Tri-axial NOV fluxgate and Silicon accelerometer set combination enssure high performance, accuracy and durability
  • 13/8" tool with Thermal Heat Shield for a 1 3/4" pressure housing enables and extended thermal range
  • Utilize 4 x AA lithium or 12 x AAA alkaline battery power source
  • Steer32 surface software data management package for tool set up and daa download
  • Built in QA checking features Wireline Retrieval Kit available f2 through conductors end to end