Spec Sheet:

Cased-Hole Logging

Gas Hold-up Tool

Gas Hold-up Tool

Gas hold-up measurement

The Gas Hold-Up Tool (GHT) provides a reliable full bore measurement of gas volume fraction, independent of flow regime or well deviation. The tool response is representative of the entire cross-section of the wellbore within the casing and is almost completely independent of salinity, water hold-up, oil/water densities and material outside the casing.


Key Features

  • Multi-phase flow profiling
  • Fluid Identification
  • Bubble Point Determination
  • Gas Entry Detection
  • Combinable with other GE Ultrawire™ tools
  • Memory or surface read-out operation

Technical Information

Service Name


Length597 mm / 23.5 in
Weight3.7 kg / 8.1 Ibs
OD43 mm / 1.688 in
Accuracy± 3%
Resolution1 %
Range0-100 % gas holdup
within 2.9-9.9 in
diameter pipe
Vertical resolution64 mm / 2.5 in
SourceCobalt 57.3 mCi / 111 MBq
Maximum pressure1030 bar / 15 000 psi
Maximum temperature177 °C / 350 °F


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