ZAS-TSh-42 Combinable Thermal-Noise Sonic Log Tool

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

Designed for cement bond quality control of casing strings, location of behind-the casing cross flows, casing leak intervals, evaluation of perforation effect on cement, control of hydro swabbing

the tool operates on a single-core cable up to 6000 m length;
the tool enables to be delivered to the interval of survey through a 2.5” diameter tubing;
the tool allows to measure dynamic and kinematic parameters of elastic waves, has passive noise logging mode and temperature logging;

Probe scheme	T₂0,25T₁1,5R
Centralizers	Bow spring
Transmitters	magnetostriction, radial
Receivers	piezoceramic
Measurement range: Transit time, mcs/m Attenuation rate, dB/m Noise period, mcs Temperature, °C Well/ string diameter range	120–160 no less 36 300–3000 0–120(150) 60–168 мм / 2,5’’–7’’
Max hydrostatic pressure, MPa	80
Max operating temperature, °С Modification 1: Modification 2:	120 150
Tool dimensions, mm diameter (without centralizers) length	42 2450
Number of cores used, pcs	1
Tool weight, kg	max 12