ZAS-02 (ZAS-03) Sonic logging and cement bond logging tool

The equipment was development by AO NPP VNIIGIS in cooperation with OOO NPC ECO-Technology Foundation

is designed for cement bond logging and investigation of open-hole sections by kinematic and dynamic
parameters of elastic waves.

identification of low-strength cement intervals, detection of volume-contact defects of cement bond;
lithologic segregation of a section, identification of reservoirs and evaluation of reservoir porosity

ZAS-02 and ZAS-03 tools with a three-element probe construction and an electronic circuit are fully compatible with the equipment - UZBA-21 and UZBA-21, widely used in Russia;
Replacement of the out of date downhole tools in UZBA-21 and UZBA-21A equipment by ZAS-02 and ZAS-03 tools keeps up using of the running investigation methods, the respective techniques as well as the interpretation software;
tool conveyance to the investigation interval through the drill pipe with inner diameter 90 mm.

Acoustic sonde formula:	ZAS-02 ZAS-03	T₂0,85T₁1,05R T₂0,5T₁1,5R
Max. operating temperature, °С		120
Max. hydrostatic pressure, MPa		80
Borehole diameter, mm		100-250
Downhole tool dimensions, mm: diameter (without centralizers) length		73 up to 3500
Weight, kg		45