Failed Double Studded Adapter (Choke Manifold Test - PowerPoint PPT Presentation

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Failed Double Studded Adapter (Choke Manifold Test

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Title: Rig Commissionning - Nabors F11 Subject: Failure of a double studded adapter Author: Allen Cook Keywords: IM, Double Studded Adapter, Rig Commissioning – PowerPoint PPT presentation

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Title: Failed Double Studded Adapter (Choke Manifold Test


1
Failed Double Studded Adapter(Choke Manifold
Test 4th test _at_ 10,000 psi equipment failed)
  • Rig Commissioning Yard (Jan 28, 2010)
  • New double studded adapter (DSA) delivered from
    pressure testers ready to go
  • Made up the equipment and readied for testing
    failed at /- 10,000 psi (5 minutes into a 10
    minute test)
  • Root Cause Failure
  • Studs not made-up to the DSA properly had lt ½
    make-up
  • No equipment verification both long bolting /
    short bolting evident
  • Action Everyone
  • Trust-n-verify ensure equipment is inspected
    ready to go
  • Question stud length anomalies (upon make-up)
  • Establish maintain buffer zones
  • Ensure CoW

4 1/16 10K x 2 1/16 10K DSA
Barely threaded into DSA
For more information contact Don
McKelvey 1-307-413-4585
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