Impact of downhole pressure and fluid-access on the effectiveness of wellbore cement expansion additives

Keyphrases

• Wellbore Cement 100%
• Downhole Pressure 100%
• Autogenous Shrinkage 66%
• MgO-based Cement 66%
• Porosity 33%
• Confining Pressure 33%
• Stress State 33%
• Elevated Pressure 33%
• Crystal Growth 33%
• Expansion Potential 33%
• Volume Change 33%
• Overpressure 33%
• Pore Water 33%
• Pore Pressure 33%
• External Fluid 33%
• Subsurface Environment 33%
• Water Consumption 33%
• Effective Confining Pressure 33%
• Bulk Volume 33%
• Shrinkage Behavior 33%
• Displacive 33%
• Slurry 33%
• Pressure Decrease 33%
• Volumetric Response 33%
• Zonal Isolation 33%
• Microannulus 33%
• Annulus Formation 33%
• Water Supply Pressure 33%
• Fluid Supply 33%
• MgO Hydration 33%
• Additive Concentration 33%
• Net Expansions 33%
• Low Cement Content 33%

Engineering

• Wellbore 100%
• Autogenous Shrinkage 66%
• Stress State 33%
• Elevated Pressure 33%
• Subsurface 33%
• Effective Confining Pressure 33%
• Bulk Volume 33%
• Growth Process 33%
• Confining Pressure 33%
• Porosity 33%

Material Science

• Magnesium Oxide 100%
• Crystal Growth 25%