Oil and gas cementing is a critical process to ensure the integrity and stability of wellbores. A S Harrison & Co offers a range of advanced cementing additives designed to address common challenges and enhance the effectiveness of cementing operations.
A S Harrison & Co’s Wellbore Guard Spacer is engineered to prevent fluid penetration into formations, thereby mitigating lost circulation concerns before cement enters the wellbore. This spacer forms a unique seal that raises the formation’s fracture pressure, allowing cement to be placed at casing depth with higher equivalent circulating densities (ECDs) without risking formation breakdown. This capability is particularly beneficial in wells with a narrow margin between the fracture gradient and pore pressure gradient, ensuring successful cement placement and wellbore integrity.
Elastomers are essential additives in oil and gas cementing, providing enhanced mechanical properties and ensuring well integrity. One standout elastomer product from A S Harrison & Co is Self-Seal, a self-sealing cement additive with remarkable capabilities. Self-Seal is designed to automatically seal the cement sheath upon hydrocarbon invasion, preventing further cement fractures and maintaining well security. This innovative additive also reduces the Young’s modulus of cement systems, offering greater resilience and the ability to absorb hydrocarbon fluids effectively.
Lost Circulation Additives (LCAs) are vital for ensuring wellbore stability and preventing formation breakdown during cementing operations. Among the leading LCA solutions from A S Harrison & Co are Safe-Shield Spacer and Safe-Shield LC4k.
Safe-Shield Spacer allows operators to perform cement jobs with higher ECDs without increasing the risk of formation breakdown. It is particularly beneficial for fragile, unconsolidated, and high-permeability formations. Safe-Shield Spacer is ideal for wells with a narrow margin between fracture gradient and pore pressure gradient, ensuring formation integrity during cementing operations.
Safe-Shield LC4k is designed for lost circulation remediation, effectively sealing fractures ranging from 10 to 4,000 microns. It enhances the ability to address partial to total lost circulation, especially in high-permeability, unconsolidated, and fractured formations. When used with Safe-Shield Spacer systems, it ensures successful cementing even in the most challenging conditions.
The integration of additives such as Self-Seal, Safe-Shield Spacer, and Safe-Shield LC4k in oil and gas cementing operations represents a significant advancement in cementing technology. These additives enhance mechanical properties, ensure wellbore stability, and provide robust solutions to common cementing challenges, ensuring the integrity and efficiency of well operations.
Product and customer insights
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