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Oilfield Glossary
Oilfield Glossary
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stable arch

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1. n. [Perforating]
The geometric profile around a correctly placed perforation. With the removal of perforating debris and the crushed zone by flushing or stimulation treatment, the exposed formation forms an arch that is capable of withstanding the differential pressure and the forces created by fluid flow during production. An unstable formation interface, such as shattered formation surrounding the perforation tunnel, may result in plugging or collapse of the perforation tunnel.