is designed to determine rock electrical resistivity azimuthal distribution within a borehole with the scanning focused lateral logging sonde array.

Description

Problems to be solved

Open well bore:

  • geological formation azimuthal heterogeneities estimation;
  • determination of layer bedding elements (dipmeter logging);
  • reservoir quality discrimination and estimation of their anisotropy by electric properties;
  • identification of vertical fracturing.
  • strata inclination determination.

Cased well bore:

  • Control of string technical condition;
  • Detection of perforation holes, including slatted and drilling perforation.

Specifications

Central electrode azimuth segments number

16/8

Investigation radial depth in open well bore, m

from 0.5

Vertical resolution, mm

15/30

Azimuthal resolution, degree

22.5 /45

Measurements range:

resistivity, Ohm•m

azimuth, degree

zenith, degree

 

0.05÷1000

0 ÷360

0 ÷180

Bed dip error:

dip angle 5-10 degree , degree

dip angle 10-50 degree , %

 

up to ±2

up to ±10

Power consumption, W

up to25

Maximum temperature, ºС

120

Maximum hydrostatic pressure, MPa

Downhole dimensions, mm:

diameter

length (including centralizers)

 

73

4700

Weight, kg

up to 46

Results

Boreholes measurement results by AESB-73 azimuth electrical scanner

Certificate