CTN™ Compensated Thermal Neutron Sensor

The CTN™ sensor provides accurate porosity, fluid type and lithology information for real-time decision making and wireline replacement applications. Porosity is computed from the near/far detector count rate ratio with robust environmental corrections applied for hole size, standoff, mud weight, mud salinity, formation salinity, pressure and temperature. When combined with the ALD™ azimuthal lithodensity or QBAT™ or XBAT™ sonic sensors, the CTN tool logs can also be used to detect and evaluate gas-bearing formations, and to determine lithology and porosity in complex mineralogy formations.

Applications

  • Porosity measurement
  • Gas detection
  • Reservoir fluid typing
  • Lithology evaluation
  • Real-time evaluation
  • Wireline replacement

SOLAR™: this sensor also exists in the high temperature/high pressure version. Please refer to the SOLAR datasheet for details.

CTN™ Compensated Thermal Neutron Sensor

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Summary North Sea, Norway: Operator Successfully Runs 5 ¾-inch Slim-Hole Drilling Operation with Geo-Pilot® RSS System Mar 2017
Summary Oman: Operator Proves Cost Savings With LWD High-Resolution Imaging Service Mar 2017
Summary U.K. Offshore: Operator Saves Significant Rig Time by Gathering Complete Formation Evaluation Data in Real Time Nov 2016
Summary Mexico: Operator Saves Time USD 7.5 Million in Deepwater Rig Time by Acquiring Crucial Formation Evaluation Data in Real Time Nov 2016
Summary Oman: SOLAR Quad-Combo Saves 2-3 Days in HPHT wells May 2015
Summary Mexico: Sperry Drilling’s New Data Compression Software Facilitates Geosteering Within Thin Reservoir while Significantly Reducing Drilling Time Jun 2012
Summary Kazakhstan: First Complete Wireline Replacement in Kazakhstan Oct 2006
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