What is API data and how does it relate to QC data?
API (American Petroleum Institute) has initiated a standard set of criteria to test perforating systems for the presence of charge interference. This test data must be recorded and reflect the test parameters. QC data is recorded in order to insure charge performance falls within usual or acceptable statistical variations. On any particular charge it can range from one in 25 to one in 500 depending on the manufacturer and its policies.