Research on Formation Identification Based on Drilling Shock and Vibration Parameters and Energy Principle

<table class="table-group" id="tab16"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Parameter</td><td class="align_center" colspan="2">Rock classification</td><td class="align_center" colspan="2">Compressive strength/MPa</td></tr><tr class="thead"><td class="align_center">Formula</td><td class="align_center"><i>R </i><sup>2</sup></td><td class="align_center">Formula</td><td class="align_center"><i>R </i><sup>2</sup></td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Drilling specific energy</td><td class="align_center"><span style="width: 116.128ptpx;"><svg height="15.535pt" id="M95" style="vertical-align:-3.9436pt" version="1.1" viewbox="-0.0498162 -11.5914 116.128 15.535" width="116.128pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M631 18C609 24 585 35 559 65C534 91 514 117 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<div>Rock strength prediction model based on drilling specific energy.</div>

Shock and Vibration

tab16

Table 16

Table 16: Research on Formation Identification Based on Drilling Shock and Vibration Parameters and Energy Principle 