Info!
UPDATED 1 Sept: The EI library in London is temporarily closed to the public, as a precautionary measure in light of the ongoing COVID-19 situation. The Knowledge Service will still be answering email queries via email , or via live chats during working hours (09:15-17:00 GMT). Our e-library is always open for members here: eLibrary , for full-text access to over 200 e-books and millions of articles. Thank you for your patience.
UPDATED 1 Sept: The EI library in London is temporarily closed to the public, as a precautionary measure in light of the ongoing COVID-19 situation. The Knowledge Service will still be answering email queries via email , or via live chats during working hours (09:15-17:00 GMT). Our e-library is always open for members here: eLibrary , for full-text access to over 200 e-books and millions of articles. Thank you for your patience.
Mechanical oscillator frees stuck pipe strings using resonance technology. B. Bernat and H. Bernat. OGJ, 3 November 1997, 95(44), 68--71.
Resonant vibration technologies provide an alternative method for freeing stuck coiled-tubing, liners, and drillstrings. Situations where the axial reciprocation of pipe, the use of large tensile, compressive, or percussive forces; or where pipe/well bore friction prohibits movement of the string may respond favourably to the use of pipe vibration. Consideration is given to advantages of the technology, practical considerations, tubular connections, fatigue stress, and attenuation. Recent examples are presented and discussed. 2 refs.
Abstract details
Journal title: Oil and Gas Journal
Subjects: Noise and vibration abatement (excluding workplace protection), Health and safety, Pipeline, Oil and gas, Oil
