The Guided Wave UT method has been subject of several papers presented and discussed on NDT seminars and conferences worldwide due the method's potential to solve some technological challenges regarding inspection of pipes such as buried pipes, insulated pipes, offshore risers and road crossings. These sections of pipelines are very difficult to inspect using other conventional NDT methods because of limited or no access. A first trial was carried out in Brazil in 2003 and planned to use the two main guided waves systems available on the market at that time to test coated, buried pipelines and insulated pipes. The results obtained in this occasion were not satisfactory for Petrobras targets. In the meantime the guided waves technology has been improved with new developments both on software and hardware and several companies worldwide have increased the use of this technology. Based on the information published claiming good performance of the technology in several applications Petrobras decided to proceed with a second trial divided in two stages: the first one carried out in November of 2005 consisting in an inspection of three rigid risers located on an offshore platform in Brazilian Northeast cost and the second one carried out in August of 2007 on an 8'' gas pipeline onshore. The results achieved in the above mentioned second trial were extremely positive. Based on these results this paper will discuss the future of guided waves in the oil and gas industry.
Ultrasonic guided waves evaluation of trials for pipeline inspection
Bewertung von Versuchen zur Pipelineprüfung mittels geführter Schallwellen
2008
9 Seiten, 20 Bilder, 3 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
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