Site: Lamont-Doherty Earth Observatory, Palisades, NY
Well: Lamont Test Well 2 (TW-2)
Total depth: 753 ft (229 m)
Casing depth: 21 ft (6.4 m)
Nominal hole diameter (bit size): 7 in.
Logging Date: 1987 (Schlumberger) - 2000 (USGS)
Logging Company: Schlumberger/USGS
Sampling interval: 0.03 m (0.1 ft) - USGS Tools
Sampling interval: 0.1524 m (0.5 ft) - Schlumberger Tools
General Information
USGS Tools/Measurements
1. Three-Arm Caliper (9074 Series), Century Geophysical Corp. / Well diameter; caliper run separately, measurements acquired logging up
2. Multifunction tool (9041 Series), Century Geophysical Corp. / Ambient temperature, natural gamma ray, short normal resistivity (16N), long normal resistivity (64N), lateral resistivity (64N/16N), fluid (mud) resistivity; all measurements were acquired logging down
3. Optical and Acoustic Borehole Televiewer.
The USGS data is available in LAS format. The depth in the LAS files is given in feet.
Only the optical BHTV is available online in WellCAD format.
Schlumberger Tools/ Measurements
Tool stri | Run
|
Top depth (m) |
Bottom depth (m) |
Notes |
1. DLL/GR
|
Main
|
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Repeat
|
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2. LDT/CNTG/NGT |
Main
|
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Repeat 1
|
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Repeat 2
|
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3. ACT/GST/NGT |
Upper
|
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Lower 1
|
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Lower 2
|
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Repeat
|
DLL/GR - Array Induction Imager/Accelerator Porosity Sonde/ Spontaneous Potential/Enhanced Digital Telemetry Cartridge
LDT/CNTG/NGT - Multi Mode Array Sonic Service Tool/General Purpose Inclinometry Tool/Enhanced Digital Telemetry Cartridge
ACT/GST/NGT - Combinable Magnetic Resonance/Enhanced Digital Telemtry Cartridge
The depth in the ASCII files is given in meters.
A null value of -999.25 may replace invalid log values.
For further information, please contact:
Cristina Broglia
Phone: 845-365-8343
Fax: 845-365-3182
E-mail: chris@ldeo.columbia.edu
Natalia Zakharova
Phone: 845-365-8726
Fax: 845-365-3182
E-mail: nzakh@ldeo.columbia.edu