Numerical Simulation on Open Wellbore Shrinkage and Casing Equivalent Stress in Bedded Salt Rock Stratum

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="left" rowspan="2">Shrinkage place</td><td align="center" colspan="3">Elasticity modulus of mudstone interbed (GPa)</td></tr><tr class="thead"><td align="center">10</td><td align="center">20</td><td align="center">30</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left">Middle of salt rock</td><td align="center">0.3134</td><td align="center">0.2817</td><td align="center">0.2243</td></tr><tr><td align="left">Middle of mudstone interbed</td><td align="center">0.1951</td><td align="center">0.1426</td><td align="center">0.1023</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

The radial displacement of shrinkage per unit time under different elasticity modulus of mudstone interbed (mm).

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tab6

Table 6

Table 6: Numerical Simulation on Open Wellbore Shrinkage and Casing Equivalent Stress in Bedded Salt Rock Stratum 