The porosity of the formation is determined by the ratio of the long and short source detector of CNLT.The LS/SS spectrum peaks can be displayed simultaneously in the windows; It is more intuitive to monitor instrument’s working state in dual spectrum displays. Without source installed, it can evaluate the state of the instrument via spectrum peak by using the ice to improve the successful rate and keep safety.

Specification:

Max .Temperature:175℃,4h Max .pressure:140MPa

Max. Hole Diameter:609.6mm/24inches Min. Hole Diameter:120.6mm/4.75inches Make-up Length:2312.6mm/91inches Shipping Length:2780.6mm/109.47inches Diameter:92mm/3.62inches

Max. Logging speed:9m/min

Measuring Range:-3—100 Limestone Porosity Unit(p.u.) Measuring Accuracy:±0.5p.u.(Record value below 7p.u.),

±7%(Record value above 7p.u.) Repeatability: ±1.5p.u. @15% limestone porosity

Depth of investigation:304.8mm/ 12inches , estimated for a 200mm/

7.88 inches water-filled open hole with nominal 15% porosity formation Vertical Resolution: 711.2mm/28inches given proper formation contrast above and below zone of interest

Max. Tensile Strength:122000lbs Max. Compressive Strength:78000lbs

Operating voltage and current:180VAC,6-10mA Detector Type:Proportional Counter

Source Type:Am241-Be Source Strength:18Curie—4.5MeV neutron scattering