T he   Spectral   Gamma   tool   is   a   three-channel   analysis   of   the   gross gamma   ray   spectrum   as   it   relates   to   potassium,   uranium,   and   thorium content.   An    internal    energy    source    of    less    than    1    micro-curries    of Cs137   is   used   to   excite   the   crystal   and   to   stabilize   the   electronics   prior to    logging.        The    spectral    window    is    recorded    via    a    256    channel spectrum   board   so   that   the   different   energy   levels   from   the   formation can be analyzed.  

Spectral Gamma Logging Tool

FEATURES Properties Measured 1. Potassium (K) Percent 40 Offset: 135.63 cm (53.4in.) 2. Uranium (U): Parts Per Million Offset: 135.63 cm (53.4in.) 3. Thorium (T) Offset: 135.63 cm (53.4in.)  Length: 167 cm (65.75in.) Temperature: 65 C (150 F) Diameter: 60.96 mm (2.40 in.) Pressure: 232 kg/cm2 (3000 PSI) Weight: 16.82 kg (37 lb.) Logging Speed: 1.5 m/min. (5 ft./min.) Tool Voltage Required: 60 VDC Tool #:7201 Part #:272000