The LDLT measures the bulk density and lithology of the formation. Two scintillation detectors (long-spaced and short-spaced detectors) positioned at different spacing from the Cs137 source. 2 spectrum from 2 detectors are acquired and processed while logging. 2Ci Cs137 source must be used.

The electronic circuits are installed inside the probe with lighter weight, shorter length; Dual windows display of long-spaced and short-spaced spectrum, more intuitive to monitor instrument state; Without source installed, it can evaluate the state of the instrument via spectrum peak by using verification jig to improve the success rate

and keep safety.

Specification:

Max. Temperature:175℃,4h Max. Pressure:140Mpa OD:124mm/4.88inches

Min. Hole Diameter:152.4mm/6inches Max. Hole Diameter:558.8mm/22inches Make-up Length:3406mm/134.09 inches Shipping Length: 3792mm/149.29 inches Max. Logging Speed:30ft/min

Record Logging Speed:<30ft/min Measuring Range: 1.3-3.0g/cm3

Repeatability:DEN: ±0.015g/ cm3(2～3g/ cm3)

Photoelectric absorption coefficient PE value: ±0.2b/e(no mud cake) Measuring Accuracy: DEN:±0.025g/ cm3(2～3g/ cm3) Photoelectric absorption coefficient PE value:

±0.2b/e(1.3 b/e ~6.0 b/e)

Measuring arm: ±7.6mm (152.4mm/6inches~406.4mm/16inches) Depth of investigation:203.2mm/8inches estimated for a 200mm/7.88 inches water-filled borehole with nominal 20% porosity formation Vertical Resolution:482.6mm/19inches given proper formation contrast above and below zone of interest

Wireline Requirement:7conductor cable Operating Voltage & Current:180VAC,6-10mA Source Type:Cs137,Source Strength:2Curie Max. Tensile Strength:78000lb

Max. Compressive Strength:7450lb Possible Combination:All GTS Tools