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ELTG-UU (Logging tool)

Model id: Robertson Geologging Electric Logging (ELOG) with natural gamma; ELTG9037


  • electric rock resistivity, shallow penetration
  • electric rock resistivity, deep penetration
  • spontaneous/self potential
  • temperature
  • total natural gamma

Purpose: shallow, medium and deep penetrating resistivity measurements with self-potential (SP) and natural gamma

Characteristics: 16” Normal resistivity; 64” Normal resistivity; Single-point resistance; Self-potential SP; Temperature; Natural-gamma detector: 50 mm x 25 mm NaI(Tl) scintillation crystal


Vertical resolution:0.010 m
Typical logging speed:5.00 m/min
Maximum pressure:20.0 MPa
Maximum temperature:70℃
Required boreholefluid:
conductive liquidThe borehole has to be filled with a conductive liquid.
Type of datatransfer:
cableData are transferred in real time via a cable.
Required type of logging cable:
4 conductorA logging cable with 4 conductors.
Required cablehead:
GO4Connector according to GO 4 standard (4 conductors).
Implement search on winches with this cable head.
Type of signal:
digitalDigital signal transmission.
Acquisitionsystem (recommended):RG-UU
Length:2.70 m
Maximum diameter:0.044 m
Weight:9.8 kg
Belongs to toolstring:
standaloneA stand alone tool that cannot be integrated in a tool string.
Usage conditons:Access on inquiry with the operation organisation/contact person.

Operator and contact:

Operator:Uppsala University, Department of Earth Sciences
Contact person:Emil Lundberg
Address: Villavägen 16
752 36 Uppsala, Sweden

End of I-EDDA database record