Northern Newark Basin Questions? See our Frequently Asked Questions. Holes Tandem Lot 1 Test Well 2 Test Well 3 Test Well 4 Tools abhtv (USGS Acoustic Borehole Televiewer) act (Aluminum Clay Tool) ait (Array Induction Imager Tool) aps (Accelerator Porosity Sonde) cbl (Casing Bond Log) cmr (Combinable Magnetic Resonance Tool) cntg (Compensated Neutron Tool) devi (USGS Deviation Tool) dll (Dual Laterolog) ecs (Elemental Capture Spectroscopy Sonde) edtc (Enhanced Digital Telemetry Cartridge) emfm (USGS Electromagnetic Flowmeter) fmi (Fullbore Formation MicroImager) gpit (General Purpose Inclinometer Tool) gr (Natural Gamma Ray Tool) gst (Induced Gamma Ray Spectrometry Tool) hgns (Highly Integrated Gamma Ray Neutron Sonde) hngs (Hostile Environment Gamma Ray Sonde) hpfm (USGS Heat Pulse Flowmeter) idfr (iFlex Induction Dual Formation Resistivity Tool) ildt (iFlex Litho Density Tool) islt (iFlex Sonic Logging Tool) itgn (iFlex Telemetry Gamma-Neutron Tool) ldt (Lithodensity Tool) mdt (Modular Formation Dynamic Tester) mft (USGS Multi Function Tool) msct (Mechanical Sidewall Coring Tool) mss (LDEO-BRG Magnetic Susceptibility Sonde) ngt (Natural Gamma Ray Spectrometry Tool) obhtv (USGS Optical Borehole Televiewer) ppc (Power Positioning Device and Caliper Tool) sp (Spontaneous Potential Log) sscanner (Sonic Scanner) tld (Three Detector Density Tool) usgscali (USGS Caliper) usgssusc (USGS Magnetic Susceptibility Tool) (re-sort tools by full name) Measurements acoustic waveforms borehole electrical images borehole optical images borehole acoustic images borehole diameter casing bond density electrical conductivity formation testing flowmeter geochemistry gamma ray inclinometry magnetic susceptibility multiple measurements nuclear magnetic resonance porosity resistivity spontaneous potential velocity (Vp - Vs - Stoneley) velocity (Vp) Hit Clear to reset parameters between separate queries