Drilling Specialty Tools
Standard DS-1, Volume 4 establishes an industry-wide standard for drill string specialty tools, which is defined as a component that operates in or is attached to the drill string having two or more parts. Examples are a kelly valve, mud motor, MWD or jar. Coverage includes:
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• Design limits and constraints
• Inspection, assembly and testing procedures
• Return, repair, re-inspection and restocking procedures
• Specific specialty requirements
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