POSC License Agreement
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<xsd:documentation>The use of shaped explosive charges to create perforation
tunnels. The explosive charge produces an extremely high-pressure jet that
penetrates the casing or liner.</xsd:documentation>
<xsd:documentation>An interval where communication tunnels have been created
from the casing or liner into the reservoir formation.</xsd:documentation>
<xsd:documentation>The value is not known. This value should not be used
in normal situations. All reasonable attempts should be made to determine
the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>