is designed for natural radioactive element content quantitative measurements: thorium (Th), uranium (U) and potassium (K) in rocks while different wells surveying.

 

Description

Features and advantages

  • interval-by-interval full gamma-spectra accumulation and further digitized data telemetering;
  • improved accuracy in Th, U, K detection;
  • borehole design effect analytical accounting (diameter, casing, cement bond);
  • referenceless energy scale stabilization and calibration, gain control.

The digital gamma-ray spectral logging tool contains registration and processing electronic module, telemetry system and scintillator detector with a gamma-ray photoelectronic multiplier. The tool is equipped with full software for Vulkan, Gektor recorder and interpretation software for logging in open and cased boreholes.

The tool can be run with one-core and tree-core cable.

Specifications

Weight content measurements range, %

Th

U

K

 

(1-100)·10-4

(1-100)·10-4

0.1÷20

Gamma-ray energy recording range, MeV

0.06-3.0

Measurement basic relative error, %

up to 5

Scintillator detector type

NaI(Tl),CsI(Na), BGO

Energy resolution of gamma-ray line 660 KeV, %          

up to 12/14/15

Energy channel quantity

256

Power supply voltage, V

50-75

Current consumption, milliampere

up to 100

Maximal operating temperature, °C

120

Maximal operating pressure, MPa

60

Downhole tool dimensions, mm

diameter

length

 

60/73/76/90

up to 1200

Weight, kg

up to  8/10/15/20

Certificate

*The tool is certified.