Schlumberger Launches EcoShield Geopolymer-Based Well Cementing Solution
In March 2023, Schlumberger Ltd., the world's leading oilfield services company, launched EcoShield, a revolutionary geopolymer-based well cementing solution. This industry-leading cement-free solution reduces the upstream oil and gas production's environmental footprint considerably without sacrificing industry-standard zonal isolation capability needed during well construction.
EcoShield utilizes the latest in geopolymer chemistry, a sustainable replacement for traditional cement-based systems. In contrast to carbon-emitting materials and processes of traditional well cement, EcoShield is developed from industrial by-products like fly ash and slag, thus making it much greener. The action is part of Schlumberger's ongoing endeavors to reduce the carbon footprint of oil and gas production and enhance the sustainability of energy production.
Zonal Isolation and Well Integrity Performance
One of the most significant features of EcoShield is the potential for strong zonal isolation—separation of various fluid and gas zones within a wellbore, critical to performance and safety.Zonal isolation is important to avoiding unwanted migration of fluid, preserving fresh water sources, and reducing environmental risk in oil and gas production. Even though it is cement-free, EcoShield has the same mechanical performance and behavior as conventional well cement with the same high level of sealing capacity and durability that is needed in well integrity.
Further, EcoShield delivers enhanced resistance to harsh conditions of high pressure, temperature, and chemical exposure, rendering it perfect for hostile drilling conditions. The application will substantially enhance the environmental savings of the oil and gas industry, while delivering a clean solution to well cementing with the assurance of the industry progressing towards cleaner technology.
