is used for inspection of coiled tubings (CT) technical condition in units.
DEFECTOSCOPE-COILED-TUBING allows:
• displaying internal and external defects of CT in real-time;
• measuring and displaying diameter, out-of-roundness and average thickness of CT;
• informing an operator about critical defects and exceeding the permissible deviations of the measured parameters;
• indicating dangerous changes of coiled tubing condition in time and decrease the risk of crashes;
• accumulating results and displaying integral characteristics of CT.
Apparatus includes
• sensor unit with integrated unit of signal processing (there are options for CT diameters from 30 to 45 mm);
• device for anchoring of a sensor unit to CT unit;
• emergency alarm unit;
• laptop with technological software.
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Basic advantages
• folding design of sensor unit allows fixing and removing it without necessity of CT lifting and dismantling of injector;
• high acceptable speed of CT motion (up to 0.8 m/s) allows providing inspection not affecting on technological operations;
• high resolution of measurement (2mm) allows detecting defects at the early stage of their development;
• usage non-contact method of measurement allows to reduce the number of wearing parts and prolong the life of the system;
• low power consumption (~120W) allows you to power the system from an on-bort electrical power outlet of CT unit;
• interface with measuring instrument of immersion depth of CT allows organizing integrated relation of measurement results to depth;
• technological software allows displaying data of measurement in real-time on screen of laptop, changing operating modes of system and input commentaries according to estimation of defects;
• opportunity of system adaptation to CT made from various alloys, can improve the accuracy of the measurements;
• usage of vibration resistant laptop with extended temperature range allows placing it in operator’s cab;
• self-testing and automatic control of fixing integrity allows giving signal to operator in case of operation disturbance of system.
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design of sensor unit: |
folding |
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principle of measurement: |
electromagnetic (non-contact) |
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diameter of coiled tubings, mm:
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from 30 to 45 ( one sensor unit for one diameter) |
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maximum thickness of coiled tubing wall, mm: |
up to 5 |
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speed of coiled tubings trip, m/s: |
up to 0.8 |
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acceptable steel grade of coiled tubings: |
ferromagnetic |
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measurement interval, mm: |
~2 |
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the number of sensors: |
16 |
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detectable defects:
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• internal, external buckles and cavities; |
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the number of sensors of external diameter measurement: |
4 |
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range of out-of-roundness measurement, mm: |
from 0 to 3 |
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accuracy of out-of-roundness measurement, mm : |
±0.2 |
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frequency of measurement of average wall thickness, Hz: |
10 |
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accuracy of measurement of average wall thickness, mm: |
±0.5 |
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supply voltage from storage battery, V: |
24±4 |
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power consumption of sensor unit, W : |
less than 60 |
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power consumption of laptop, W: |
less than 60 |
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range of sensor unit operating temperature, °C: |
from -40 to +50 |
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dimensions of sensor unit, mm: |
340 x 300 x 260 |
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weight of sensor unit, kg: |
less than 20 |
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length of connecting cable from sensor unit to laptop, m: |
50 |
Display forms of technological software