Experimental Study of Genesis of Geologically Activated Cementing Materials for Deep Wellbore Plugging and Its Self-Healing Behavior for the Resilient P&A System
As the harsh conditions (high-temperature, high-pressure, the presence of CO2, etc.) of deep-water wells in the Gulf of Mexico (GoM) continually threaten the integrity of traditional well barriers, investigating and understanding what can be done
Smart Expandable Fiber Additive to Improve Zonal Isolation in Geothermal Wells
One of the critical issues that might happen in some geothermal wells is the failure of the cement sheaths and its debonding from the casing string.
Experimental Method Development to Evaluate Cements at Elevated Pressure and Temperature
A team from Sandia and Brookhaven National Labs is evaluating high temperature cements for the DOE Geothermal Technologies Office.
Self-Repairing Polymer-Modified Wellbore Cements with High Thermal and Chemical Stability for Enhanced Geothermal Systems
Wellbore cement in geothermal environments is subjected to a number of mechanical, thermal (up to 450C), and chemical (CO2, H2S, mineral acids, concentrated brines) stress regimes over its lifetime.
A Discussion on Casing-Cement Bonding at Elevated Temperatures and Its Implications to Well Integrity
Casing-cement interaction is considered to be the critical element in maintaining the correct well integrity for life of the well.
Technical Challenges for Cementing Super-Hot Geothermal Wells
Cementing casing in a super-hot, 350 – 500°C, geothermal well is a very important part of well construction operation.