is designed to determine rock density and rock effective atomic number in oil-and-gas wells.

Description

Problems to be solved:

• lithology definition;
• porosity estimation in two-component rock matrix.

Features and Advantages

• simultaneous density estimation ρ and rock effective atomic number determination Zeff;
• ρ and Zeff determination improved accuracy at the expense of scattered GR full spectrum analysis when Zeff determining.

Specifications

Measurements range:

    rock density, g/cm3

    effective atomic number, unit

 

1.5-3

10-20

Measurement error:

    density, %

    effective atomic number, unit

 

±2

±0.25

Spectrometer quantization levels number

128

Maximum operating temperature, °C

120

Maximum operating pressure, MPa

80

Downhole tool dimensions, mm:

    diameter

    length

 

48; 90

1500; 2500

Weight, kg

70

Results

Lithology log results usage for elaboration cross-section lithology and rock density estimation.

Certificate