is designed for defect detection and separate casing wall thickness measuring.
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.
|
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: along the pipe axis – first (inner) pipe – second pipe across the pipe 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.
The results of EMDS-TM-42E tool measurement in models
Intensive corrosion in inner (third) column with the diameter 340 mm