... that the surface equipment also has natural frequencies of vibration. When these natural frequencies are multiples of the ERT frequency, the ERT stimulates the surface equipment vibration modes. directional drilling variation upstream oil & gas hydraulic fracturing amplitude pooh drilling operation...

... gooseneck completion installation and operations modeling application finite element method coiled tubing operations displacement software petroleum engineer upstream oil & gas natural frequency ct stack utilization different loading fem von mise stress Introduction The advent...

... is analyzing the dynamic response of the CT to axial vibrations induced by a downhole extended reach tool [1], and the resulting tubing material response leading to failure. coiled tubing operations drilling operation injector vibrate displacement amplitude natural frequency coiled tubing...

..., a dynamic model for CT string in vertical well is built, and the wave equation is established, then frequency equation is derived and natural frequencies are found. After that, finite difference method is used to conduct numerical calculation. The results show that when system resonates, it must take...