is designed to determine rock electrical resistivity azimuthal distribution within a borehole with the scanning focused lateral logging sonde array.
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.
Cased well bore:
- Control of string technical condition;
- Detection of perforation holes, including slatted and drilling perforation.
|
Central electrode azimuth segments number |
16/8 |
|
Investigation radial depth in open well bore, m |
min. 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 to 25 |
|
Maximum temperature, ºС |
120 |
|
Maximum hydrostatic pressure, MPa |
60 |
|
Downhole dimensions, mm: diameter length (including centralizers) |
73 4700 |
|
Weight, kg |
up to 46 |
Boreholes measurement results by AESB-73 azimuth electrical scanner