The EMDS tool detects the tubing or casing thickness, corrosion, deformation, cracks etc.in tubing, indicating downhole string structure, tool location and detecting the ferromagnetic material (such as casing centralizers, surface casing, etc.) outside casing.
Due to the unique structure and measurement principle, logging can be performed in the course of normal production of oil/water/gas wells, reducing operating cost in inspection and increasing efficiency, giving the extent of damage of casing in time.
Features
Full function: The damage and thickness of tubing and casing, temperature, gamma, etc. can be measured in just one trip.
Easy maintenance: Simple mechanical structure, easy disassembly and easy maintenance.
Various operating modes: Cascade connection, connection with MFC, etc.or independent operating.
Maximum temperature | 177℃ |
Maximum pressure | 103.4MPa(15000psi) |
OD | 43mm(1.69in) |
length | 2300mm |
weight | 10Kg |
Operating voltage | 90±8V/18V |
Operating currency | (135±5)mA/(550±50)mA |
Maximum logging speed | 400m/h |
Measuring range of pipe diameter and thickness | |
Measuring range of pipe diameter | 62~324mm(2.44in~12.75 in) |
pipe thickness | 3~12mm(0.11in~12.75 in) |
Total maximum thickness of double pipes | 25mm(0.98in) |
Measuring error of single pipe thickness | 0.5mm(0.019in) |
Measuring error of casing through tubing | 1.5mm(0.059in) |
Minimum length of longitudinal damage | 50mm(1.96in) 2.5" single pipe 70mm(2.75in)5.5" single pipe 150mm(5.90in.)5.5" casing through tubing |
Minimum length of transversal damage | 1/4 circumference |
Minimum diameter hole damage | 30mm(1.18in.) |
Measuring range of Gamma | (0～2000)cps |
Gamma sensitivity | 1cps |
Measuring range of temperature | -40℃~177℃ |
Temperature resolution | 0.1℃ |
Temperature accuracy | ±1℃ |
Housing material | Tc4 |
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