Maximize productivity by minimizing perforation damage with dynamic underbalance

Harness the power of dynamic underbalance to consistently minimize or even eliminate perforation damage.

The PURE™ clean perforations system is designed to optimize your well’s dynamic underbalance, the transient underbalance that happens right after creating the perforation cavity. With our proprietary design software, we can specify a custom perforating configuration and the optimal completion process for your well.

Unlike conventional methods that rely on estimated reservoir pressure, our approach generates and controls the dynamic underbalance. The PURE system has been successfully used in various environments, including hard- and soft-rock formations, oil and gas reservoirs, sandstones, and carbonates. Plus, it minimizes disruption to the cement or sandface hydraulic bond.

• Hard- and soft-rock formations
• Oil and gas reservoirs
• Sandstones and carbonates

• Minimizes or eliminates perforation damage using dynamic underbalance
• Generates and controls dynamic underbalance independent of estimated reservoir pressure
• Uses proprietary software to design unique perforating and completion process
• Removes perforation debris and crushed-zone damage
• Ensures efficient communication between the reservoir and wellbore for enhanced operations
• Maximizes production through optimized perforation cleanup
• Conducts extensive experiments to validate dynamic underbalance effectiveness

Remove perforation debris and crushed-zone damage

The PURE system’s perforation cleanup process doesn’t depend on the initial underbalance like conventional methods do. Extensive experiments at the SLB Productivity Enhancement Research Facility (PERF) have shown that it’s the maximum dynamic underbalance—not the initial underbalance before the guns fire—that governs perforation cleanup. To achieve this optimal dynamic underbalance, our design method considers the reservoir, wellbore, fluids, perforating hardware, and completion geometry.

Cleaner perforations mean better communication between the reservoir and wellbore, enhancing acidizing and hydraulic fracturing operations and, ultimately, maximizing production.