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Home » Wireline Services » Cased Hole Logging » Digital Spectral Gamma Ray

» Record of Spectral Gamma Ray 2017.

DIGITAL SPECTRAL GAMMA RAY

Specifications:

  • Length: 82.76″
  • Weight: 31 lbs.
  • Diameter: 1-11 /16″ & 2 3/4″
  • Measuring Point: 67.83″ from bottom
  • Connections: Single conductor/mono cable
  • Spectrometry: 256/512 energy channels
  • Communication: Digital 20 KHz, up to 2.7 times data frames per sec.
  • Data Frame: 267 words
  • Channels: 256 channels for spectrum in all working modes, time channel pulse indicator, cable head voltage, flask temperature, 2 counters channels, 1 A/D channel

Pulse pile-up capabilities: detectable, not correctable – presented as output on the log

Working Modes:

  • Mode 0 – sleep mode: auxiliary sensors works, gamma ray sensors
  • Switched off   HV on minimum;
  • Mode 1 – 256 energy channels spectrum presentation
  • Mode 2 – 512 energy channels spectrum presentation

Spectrum adjustment:

  • Gain command
  • LLD – low-level height discrimination
  • ULD – upper level of pulse height discrimination
  • Temperature range:
  • Without flask – 250 Degrees F – one hour

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