ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Failure of the drill pipe thread is always a very serious problem which may result inserious accidents and rework during the drilling of oil wells. Rupture crack of the drill pipe threadmay result in great economic and labour losses, so they need to be inspected periodically. As thedrill pipe thread is not a smooth surface and is in the end area of drill pipes, it is very difficult to beinspected by traditional Non-destructive testing (NDT) methods. According to the experimentresults and the requirement of the working conditions in the field, a local MFL inspection method,which is the most adaptive inspection method, is determined. Laboratory testing and fieldexperience show that this inspection method can detect the crack as small as 0.6mm (depth) in thethread root and thus reduces the risks of drilling failure. This local MFL inspection method caninspect flaws of the drill pipe thread that occur in practice exactly and quickly, and it has very wideapplication perspectives
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.321-323.472.pdf
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