Drill String and BHA Management Standards

Drill String and BHA Management Standards

This document provides the minimum standard for drill string management


API Specification 5DP/ISO11961: Specification for Drill Pipes

API Specification 7-1/ISO10424-1: Specification for Rotary Drill Stem Elements

T.H. Hill Standards DS1: Drill Stem Design and Inspection

API Specification 7-2/ISO10424-2: Specification for threading and gauging of rotary shouldered threaded connections


1. All Drill String components supplied to COMPANY by contractors shall be manufactured with the relevant API specification as referenced above. Manufacturers must . . .

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