The Electro-magnetic Defect Detection Instrument have successfully resolved the problems of detecting the thickness, corrosion, deformation, cracks and other problems of casing in tube. It displays accurately the downhole pipe string, tool location, and it can also detect the magnetic material outside casing (such as casing centralizer, surface casing and so on).
Technical parameters
| Max working temperature: | 175℃ |
| Max pressure: | 14500PSI（100Mpa） |
| Working voltage: | 90V DC(Typical) |
| Working current: | 80mA～150mA |
| Logging speed: | 300m/h |
| Applicable casing(tubing) | 2.44″-9.21″（62mm-324mm） |
| Length: | 2.3m (without stabilizer) |
| Diameter: | 1.69″（43mm） |
|
Basic error of wall thickness
Single layer: Double layer: |
0.5mm 1.5mm |
|
Min length of axial crack defects of string inspection
2.5” single layer string: 5.5” single layer string: Double layer string: |
50mm 70mm 150mm |
| Min length of horizontal crack defects of string inspection: |
1/6 circle |
| Min diameter of hole defects: | 30mm |
| Detecting range of single layer wall thickness: | 3-12mm |
| Detecting range of double layer wall thickness: | max 25mm |