Thick-Walled Cylinder

Thick-Walled

Cylinders

Thick-Walled

Cylinders

Internal Internal MonitorinMonitorin

g Is g Is EssentialEssential

Internal Internal MonitorinMonitorin

g Is g Is EssentialEssential

Measure Expelled Fluid to Sense Changes in Internal

Wellbore Volume

Increase Confining Pressure to Simulate

Drawdown/Depletion/Underbalance

Thick-Walled Cylinders

Measure External Strain

Measure External Strain

Measure External Strain

Measure External Strain

Geometric Geometric AnalogAnalog

Geometric Geometric AnalogAnalog

This figure shows the two basic measurements made during the thick-walled cylinder testing. These are the volumetric strain sensed at the outer boundaries of the cylinder and the fluid expelled from the central

wellbore (indicating changes in dimensions of this inner wellbore analog).

This figure shows the two basic measurements made during the thick-walled cylinder testing. These are the volumetric strain sensed at the outer boundaries of the cylinder and the fluid expelled from the central

wellbore (indicating changes in dimensions of this inner wellbore analog).

This figure shows the methodology for estimating the initiation and accelerated deformation from the volume of

fluid expelled from a central wellbore during the thick-walled cylinder testing. Log-log plotting is used to

emphasize inflections

This figure shows the methodology for estimating the initiation and accelerated deformation from the volume of

fluid expelled from a central wellbore during the thick-walled cylinder testing. Log-log plotting is used to

emphasize inflections

Pre-Test

Thick Walled Cylinder CT Scans

Post-TestPost-Test

Thick Walled Cylinder CT Scans

Pre-TestPre-Test

Post-TestPost-Test

Thick Walled Cylinder CT Scans

Pre-TestPre-Test

Post-TestPost-Test

Thick Walled Cylinder CT Scans

Pre-TestPre-Test

Post-TestPost-Test

Thick Walled Cylinder CT Scans

Pre-TestPre-Test

Post-TestPost-Test

Thick Walled Cylinder CT Scans

Pre-TestPre-Test

Post-TestPost-Test