is designed for defect detection and separate casing wall thickness measuring.

Description

Features and Advantages

• detection of defects (cracks, pipe break-off, corrosion intervals and mechanical wear zones, explosion perforation zones and filters, collar corrosion);
• two inner pipes separate wall thickness measurement (after computer processing), without retrieving the internal pipe;
• wellbore construction investigation: collars location within the internal pipes, depth referencing of all pipes, pads/packers/valves depth location, etc.

Wellbore diagram with all the defects, collars, pads (both two pipes); signal isoline diagram (prolonged measurement time) is represented by the means of processing program.

Specifications

Pipe inner size, mm

62÷340

Max. two pipes wall thickness

25

Wall thickness measurements error, mm:

for single-pipe configuration

for multicolumn configuration

 

5

10

Longitudinal crack minimal length, mm:

– first (inner) pipe

– second pipe

– cross-axis

 

1/9 circumference

1/4 circumference

1/6 circumference

Temperature measurement absolute error, °C

1

Response threshold, °C

0.01

GR intensity registration range, µR/hr

3-100

Inner diameter error, mm

1

Max. hydrostatic pressure, MPa

60, 80*

Max. operating temperature, °C

120, 150, 175*

Cable

one-core cable

Tool dimentions, mm

diameter

length (without centralizers)

 

42

2100

* – depends on tool modification.

Results

The results of EMDS-TM-42E tool measurement in models

Intensive corrosion in inner (third) column with the diameter 340 mm

Certificate