Multiple-Echo Suppression Modeling and Experimental Verification for Acoustic Transmission along Periodic Drillstring Using Dual Receivers

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left"> </td><td align="center">Cross-sectional area (m<sup>2</sup>)</td><td align="center">Length (m)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left">Circular pipe</td><td align="center">0.75 × 10<sup>−3</sup></td><td align="center">1.5</td></tr><tr><td align="left">Tool joint</td><td align="center">1.13 × 10<sup>−3</sup></td><td align="center">0.1</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Shock and Vibration

tab2

Table 2

Table 2: Multiple-Echo Suppression Modeling and Experimental Verification for Acoustic Transmission along Periodic Drillstring Using Dual Receivers 