1、 Downhole Perforating ToolsAPI SPECIFICATION 19PTFIRST EDITION,MAY 2022Special NotesAPI publications necessarily address problems of a general nature.With respect to particular circumstances,local,state,and federal laws and regulations should be reviewed.The use of API publications is voluntary.In s
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8、resent,warrant,or guarantee that such products do in fact conform to the applicable API standard.Users of this specification should not rely exclusively on the information contained in this document.Sound business,scientific,engineering,and safety judgment should be used in employing the information
9、 contained herein.Where applicable,authorities having jurisdiction should be consulted.Work sites and equipment operations may differ.Users are solely responsible for assessing their specific equipment and premises in determining the appropriateness of applying the specification.At all times users s
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14、ollows.Shall:As used in a standard,“shall”denotes a minimum requirement to conform to the standard.Should:As used in a standard,“should”denotes a recommendation or that which is advised but not required to conform to the standard.May:As used in a standard,“may”denotes a course of action permissible
15、within the limits of a standard.Can:As used in a standard,“can”denotes a statement of possibility or capability.This document was produced under API standardization procedures that ensure appropriate notification and participation in the developmental process and is designated as an API standard.Que
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