Technology

19 Aug Modular Temperature Tool (MTT)

Description The Modular Temperature Tool (MTT) is a flexible, general-purpose third party temperature logging tool developed by the Lamont-Doherty Earth Observatory Borehole Research Group. It replaces two previous temperature logging tools: 1) the Temperature-Acceleration-Pressure probe (TAP), which was limited to temperatures below 85°C and operated only...

Read More

19 Aug Versatile Seismic Imager (VSI*)

Description The Versatile Seismic Imager (VSI) represents the latest available technology in the acquisition of seismic waves generated by a seismic source. The VSI employs three-axis single sensor seismic hardware and software and advanced telemetry for efficient transmission of the data from the borehole to the...

Read More

19 Aug Well Seismic Tool (WST*)

Description The WST was a Schlumberger single axis check shot tool used for zero offset vertical seismic profiles (VSP). The WST consisted of a single geophone, pressed against the borehole wall, that was used to record the acoustic waves generated by an air gun located near...

Read More

19 Aug Sonic Digital Tool (SDT*)

Description In fast formations, where shear velocity is faster than the velocity of the drilling fluid, the SDT obtained direct measurements for shear, compressional, and Stoneley wave values. In a slow formation, the SDT obtained real-time measurements of compressional, Stonily, and mud wave velocities. Shear wave values could then be...

Read More

19 Aug Borehole Televiewer (BHTV)

Description The Borehole Televiewer (BHTV) was an acoustic device that scanned the wall of a borehole, producing an image of the reflectivity of the rock surrounding the wellbore as function of depth and azimuth. The BHTV was manufactured by SIMPLEC under license from Mobil Oil Corporation. The BHTV...

Read More

19 Aug Natural Gamma Ray Spectrometry Tool (NGT*)

Description The Natural Gamma Ray Tool (NGT) utilized a sodium-iodide scintillation detector to measure the natural gamma ray radiation of the the three most common components of the naturally occurring radiation: potassium, thorium, and uranium. The high-energy part of the spectrum was divided into three energy windows, each covering...

Read More