Explosive shaped charges puneh holes through the easing of oil and gas wells and create tunnels to connect the wallbore to the rock beyond the casing. To determine penetration performance in known conditions, service companies conduct tests at the surface, firing shapsd charges into unstressed concrete targets. After determining that modeling programs may not correctly predict downhole charge performance, Schlumberger scientists developed software that accurately computes depth of penetration, perforation effectiveness and system dynamic responses. They have also used this knowledge to develop charges that are optimized for perforating stressed rocks.
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