| Issue 38, November 2011 |
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| DEVELOPMENT OF AND RESULTS FROM A NEW COILED TUBING INSPECTION SYSTEM |
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Roderic K. STANLEY, ItRobotics, IOS-PCI, and Coiled Tube Resource Management
We have now built systems that will perform NDE inspections of the body and seam
weld of new and used electric-weld coiled carbon steel tubulars. The full body
inspection system provides 4 functions: OD and ovality measurement, internal and
external imperfection detection and assessment, and wall thickness measurement,
all by non-contact measurements. The magnetizing system places a high magnetic
field across the seam weld, and searches for either flaws or permeability variations
there-in. Advanced forms of data processing are used to image the magnetic flux
leakage (MFL) from wall anomalies. Systems may be built into coiled tubing (CT)
rigs, and can be configured to add fatigue models, so that fatigue loss due to
tubing defects can be assessed. Two systems are in operation in CT mills, while
one operates for a commercial oil country tubular goods (OCTG) inspection company.
Results from inspections using these tools are presented. full text of the article | all articles of this issue
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