... 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...

... 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...

... vibrations have damaged surface equipment. Directional Drilling case 2 Force Amplitude surface equipment drilling operation vertical section weight amplitude coiled tubing waveform frequency horizontal section amplitude resonance length resonance society of petroleum engineers Upstream...

... minutes to reach large stress amplitude of the CT string enough to make damage on it. The field recorded data indicate that there maybe exists resonance actually. After synthesizing the information above, an image of the process how LPM is formed has been constructed. Finally, the measures to reduce LPM...

... of petroleum engineers velocity pulse poppet valve amplitude pulse amplitude valve Completion Installation and Operations production enhancement pressure pulse Case History rarefaction pulse spwh tool amplification Introduction Water hammer tools are commonly used to improve weight transfer...

... with 45.72mm, 50.8mm and 55.88mm. OD respectively. The effect of the wavelength on the maximum rigid passage length is shown in Fig.5 . The amplitude of the buckled tubing is set to π 3 . The maximum passage length increases with the growth of the wavelength, which is consistent with practical...

...-hammer pulse flow rate amplitude inclination valve Introduction As horizontal wells have come to dominate well completions, the need to re-enter these wells for intervention work has increased. The record lateral extent of a horizontal well is now 39,468 feet (12,033 m) ( World Oil 2015...

... pressure oscillation tool be developed that provides the capability to manage downhole pressure oscillation amplitude independent of flow rate. It is also proposed that such a tool, operating at low frequencies, could simultaneously encode downhole measurements within the pressure pulse signal. This paper...

... simulation time step drillstring design fd scheme tool string spring constant athena matrix equation amplitude reflection coefficient friction coefficient dynamic friction coefficient cable vertical well Introduction Types of Models There are many numerical models available...

... groove spe 100161 characterization imperfection inspection unit specimen amplitude defect centerline stanley mfl solenoid Introduction End-users of coiled tubing are keenly aware and much has been published concerning the fact that bending fatigue is one of the primary threats...

... demonstrate that the abrasion process causes compressive residual surface stresses that somewhat offset the detrimental effect of a rougher surface. curvature regime alloy Upstream Oil & Gas Mean stress stress amplitude fatigue damage polished sample Completion Installation and Operations...

... cone production control production logging dia 2 Reservoir Surveillance Coiled tubing operations information production monitoring Completion Installation and Operations edm ball cutter dia 2 radial amplitude duration radial component number sensor number sensor number flaw edm flat...

... the effect of the initial amplitude on both sinusoidal and helical buckling behavior of CT in curved wells. The results indicate that the radius of curvature of a borehole is a governing parameter to influence CT buckling/bending behavior in a curved well. The effect of CT initial configuration on sinusoidal...

... with fatigue life of the coiled tubing. P. 71 fatigue damage qt-800 fatigue lifetime amplitude barkhausen measurement specimen magnetic parameter ferromagnetic material artificial intelligence coercivity barkhausen activity macrocrack dislocation hysteresis measurement variation fatigue...