Hollow Carrier Gun Perforating Systems
Hollow carrier guns are pressure-tight steel tubes in which shaped charges are positioned. For gun ODs of 2 7/8 in and larger, hollow carrier guns perform better than exposed guns because they use larger charges, optimized phasing, and increased shot density. Hollow carrier guns are also used when debris is unacceptable and in hostile conditions that preclude using exposed guns.
Schlumberger hollow carrier guns are designed as systems, comprising specific carriers, charges, detonating cords, and boosters, to provide maximum perforator performance. All Schlumberger gun systems are manufactured to our rigorous QA standards. The main types of hollow carrier guns are
PowerJet Nova charges are optimized for downhole formation penetration.
PowerJet Omega deep penetrating shaped charge is the latest-generation PowerJet shaped charge from Schlumberger.
The PURE system optimizes dynamic underbalance in the well to consistently eliminate or minimize perforation damage.
HSD guns have a high shot density of 4 spf or higher with optimum phasing patterns and the largest high-performance charges available for natural, stimulated, and sand control completions. For applications that require a large AOF, the Bigshot 21 gun system provides a shot density of 21 spf.
Port Plug guns shoot the charges through replaceable plugs in a reusable gun carrier and feature highly flexible multiple-gun selectivity for remote operations, enabling the perforation of large intervals with minimal hardware. HEGS High-Efficiency Gun Systems are similar to Port Plug guns, with longer, expendable hollow carriers that are faster to load and run.
Setting new standards for alignment accuracy and verification of charge orientation, the OrientXact tubing-conveyed oriented perforating system is ideally suited for long and high-deviation wells.
Engineered for the fracture stimulation of wells, Frac Gun systems have additional applications in slimhole wells, sand control operations, and coalbed methane (CBM) wells.
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