Model id: Dual Laterolog, Antares, SN: 1112002
Purpose: electric rock resistivity with two different depths of penetration
Characteristics: focused currents are induced into the borehole wall and the resulting voltage and current are measured with respect to a reference electrode at the surface, differently focussed electrodes record deep & shallow penetration depth; Rdeep, Rshallow [Ohmm], GR [gAPI]; depth of penetration: deep: 0.5-2, shallow: 0.3-0.7, depends on formation resistivity
|Vertical resolution:||0.200 m|
|Penetration depth:||2.000 m|
|Typical logging speed:||10.00 m/min|
|Maximum pressure:||80.0 MPa|
conductive liquidThe borehole has to be filled with a conductive liquid.
|Minimum borehole diameter:||0.075 m|
|Maximum borehole diameter:||0.250 m|
|Type of datatransfer:|
cableData are transferred in real time via a cable.
|Required type of logging cable:|
4/7 conductor4 & 7 conductor cable types are possible.
GO7Connector according to GO 7 standard (7 conductors).
Implement search on winches with this cable head.
|Type of signal:|
digitalDigital signal transmission.
|Maximum cable length:||7000 m|
|Maximum diameter:||0.043 m|
|Belongs to toolstring:|
Antares telemetryAlways in combination with and only with the Antares Telemetry Sub TS.
|Usage conditons:||Only non-commercial research is allowed/welcome.|
|Additional usage conditions:||Logging as service by ICDP OSG|
|Additional information available at:||https://www.icdp-online.org/fileadmin/icdp/services/img/Logging/OSG_Slimhole_Sondes_Specs_pics_01.pdf|
Operator and contact:
|Operator:||GFZ German Research Centre for Geosciences, Centre for Scientific Drilling|
|Contact person:||Jochem Kück|
|14473 Potsdam, Germany|