Post on 15-Mar-2020
transcript
Robert Blackmun18/11/2014
High Pressure & Deepwater RisersThe Nimway Connector
Content
Subsea system integrity & risers
A brief history of boring old steel risers
Nimway CWOR connector Connector overview Proof of Concept Qualification
Subsea System Integrity Status and challenges of subsea standardisation Life extension of subsea assets Inspection techniques – subsea systems Condition monitoring Data management Industry collaboration The subsea factory Life extension for risers, flowlines, tiebacks, umbilicals and subsea control systems Integrity management of flexible risers Flow assurance Pipeline integrity Pipeline inspection techniques
Intervention – what can be done?
Light Well Intervention Coiled Tubing
DeploymentRiserless
Intervention
What can risers do?
CWOR
CompletionTubing
installation
Pressure testing
Bullheading
WorkoverExtended well test
Early production
Suspension
Wireline logging
Coiled tubing ops
Completion and Workover Riser (CWOR)
What challenges do we face?
Higher Pressure
Higher Temperature
Deeper Water Manufacturing Challenges
What can we make?
Boring old steel risers 80ksi NACE (22HRC / 250HV10) Low alloy / carbon steels Q&T pipe & forgings
Welded construction 45ft joints Fatigue qualified Inconel weld inlay
CWOR Connector
Nimway features
Tensioned sleeve Evolved from a flange Reliable preload 2 minute make up Hands free make up
Virtually unlimited make/break No torque = no galling, no wear Weld repairable seal pockets Replaceable CRA metal seal Replaceable components
Shoulder flange
Hub flange
Collar
Metal /metal seal
Sleeve
Bolting up a flange
Bolt Tensioning
• Hydraulic cylinder stretches stud• Wind nut down by hand• Nut locks stretch in stud
Evolution of Bolt Array to Sleeve
Collar = NutsSleeve = Studs
External section removed
What have we done? Proof of Concept Test
Produce 5” 15,000psi Nimway test specimen
Simple MUT (tensioning tool) Make / break tests Hydrotest to 22,500psi Strain gauge make / break Repeatability within 2.5%
Validation of FEA Preloading accuracy 2% Hydrotest accuracy 3%
What are we going to do?
Nimway 710 – mid 2015 Nimway 510 – end 2015 ISO 13628‐7 Annex I API 17G WD5 Annex I Connector and weld qualification Project materials Project fabrication Accelerated first project delivery schedule
ConnectorTest
Connector 1
Connector 2
Connector 3
Seal Fixture
Annex I.5.3.1 Hydrostatic body test
o o o o
Annex I.5.3.2 Make/Break Testo o o
Annex I.5.3.3 Seal/gasket test procedure to
ISO 10423 F.1.11o o
Annex I.5.3.3 Seal/gasket test procedure to ISO 10423
F.1.13.5.3o
Annex I.5.3.6 Cyclic load testo o o
Annex I.5.3.5 External load test
o
Annex I.5.3.6 Cyclic load test to Failure
o
Annex I.5.3.5 External load test to failure
o
Annex I.5.3.3 External Pressure Test
o
Annex I.5.3.4 Internal pressure (burst) strength
o
Thank You for Listening