Effect of Annular Gas-Liquid Two-Phase Flow on Dynamic Characteristics of Drill String

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">The total number of elements</td><td class="align_center">108354</td><td class="align_center">151864</td><td class="align_center">201034</td><td class="align_center">256845</td><td class="align_center">305983</td></tr><tr><td class="align_left">Maximum equivalent stress</td><td class="align_center">0.41585</td><td class="align_center">0.42256</td><td class="align_center">0.42598</td><td class="align_center">0.42687</td><td class="align_center">0.42691</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Grid independence verification.</div>

Shock and Vibration

tab2

Table 2

Table 2: Effect of Annular Gas-Liquid Two-Phase Flow on Dynamic Characteristics of Drill String 