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API 11V Task Group

API 11V Task Group. 15 November, 2007 Houston, USA. Agenda. Introduction What is the pertinent API Organization? What is an API Recommended Practice (RP)? What is the typical API RP development process? What is the typical API RP development time line?

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API 11V Task Group

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  1. API 11V Task Group 15 November, 2007Houston, USA

  2. Agenda • Introduction • What is the pertinent API Organization? • What is an API Recommended Practice (RP)? • What is the typical API RP development process? • What is the typical API RP development time line? • What commitment is required to complete this document? • API Procedures for Standards Development • 11V Task Group Process • Revise, Modify/Confirm Objectives • Revise, Modify/Confirm Content Structure and Scope (draft provided below) • Tasks definition and distribution (option to volunteer) • Discuss/agree on this RP document development/review process • Discuss potential project time line • Agree on place, date of next meeting

  3. API Organisation

  4. Gas-Lift Task Group Organization • Task Group Chairman – Jim Hall, Shell Int’l E&P • Secretary – Cleon Dunham, Oilfield Automation Consulting • Active Projects: • RP11V5 – Chairman, Cleon Dunham • RP11V6 – Chairman, Joe Clegg, Integrity Consulting • RP11V8 – Chairman, John Martinez, Production Associates • RP11V9 – Chairman, Cleon Dunham • RP11V10 – Chairman, Steve Gossell, Saudi Aramco • RP11V11 – Chairman, Juan Carlos Mantecon, SPT GROUP

  5. API Spec./RP Process 11V Task Group determines need for new work Work Group chairman enlists members Work Group prepares an API NWI (new work item) Sub-Committee 11 approves NWI Work Group develops the Spec / RP 11V Task Group requests SC11 approval Sub-Committee 11 requests comments and approval from members Spec. / RP is approved and published Spec. / RP is reviewed every 5 years Revise, Reaffirm, Withdraw

  6. Nominal Timeline for a document

  7. Gas-Lift Specifications and Recommended Practices - Published • Specification (Spec)11V1 - Specification for Gas Lift Equipment (41 pages)* • Recommended Practice (RP)11V2 - Gas-lift Valve Performance Testing (60)* • RP11V5 – Recommended Practice for Operations, Maintenance, and Trouble-Shooting of Gas Lift Installations (34) Soon to be updated • RP11V6 – Recommended Practice for Design of Continuous Flow Gas Lift Installations Using Injection Pressure Operated Valves (88) • RP11V7 – Recommended Practice for Repair, Testing, and Setting Gas Lift Valves (26)* • RP11V8 – Recommended Practice for Gas Lift System Design and Performance Prediction (94) • * To be replaced by ISO 17708-2

  8. Gas-Lift Specifications and Recommended Practices – being developed • 11V9 – Recommended Practice for Operation, Maintenance, Troubleshooting and Design/Re-Design of Dual Gas-Lift Systems • 11V10 – Recommended Practice for Design of Intermittent and Chamber Gas-Lift Wells and Systems

  9. Gas-Lift Specifications and Recommended Practices – New Work Item • Recommended Practice for Dynamic Simulation of Gas Lift Wells and Systems

  10. RP – Dynamic Simulation od Gas Lift Wells and Systems – Team • Juan Mantecon, SPT Group - Chairperson • Cleon Dunham, Oilfield Automation - Secretary • Adam Ballard, BP • Arne Valle, Hydro • Dan Dees, AppSmiths • Egil Henrik Uv, Hydro • Fernado Ascencio Candejas, PEMEX • Dr. Fernando Samaniego, UNAM (Mexico Autonomous Nacional Uni) • Galileu Paulo Henke A. Oliveira, Petrobras • Greg Stephenson, ep-solutions • Kallal Arunachalam, ConocoPhillips • Ken Decker, Decker Technology • Murat Kerem, Shell • Shanhong Song, Chevron • Torbjørg Klara Fosum, Statoil • Yula Tang, Chevron

  11. Content / Scope (1) • Purpose of this document • Who is the target audience of this RP? • Researchers • Engineers • Analysts • Operators • What are the objectives of this RP? • Science • Improved knowledge/awareness • Training • Improved designs • Improved operations • Other

  12. Content / Scope (2) • Typical Gas Lift Operations • Continuous Gas Lift • Dual gas-lift • Gas-lift of gas wells • Intermittent gas Lift • Single Point Gas Lift Injection • Subsea Interventionless Gas Lift • Well Kick-off • Well Clean-up • Riser Gas Lift • Dry Gas Injection • When to start Gas Lifting • Dynamic Simulation vs NODAL Analysis • Black Oil vs Fluid Composition

  13. Content / Scope (3) • Flow Stability • Cause of Slugging Conditions • Slug Size and Frequency • Operational instability – heading • Determine cause(s) of heading • Determine possible cures • Water Accumulation • Corrosion Rate • Corrosion Inhibition • Production Chemistry – Flow Assurance • Hydrates Dissociation/Formation • Wax Appearance Pressure-Temperature • Hydrates/Wax Avoidance Method • Pressure-Temperature Control • Remove Supply of Water • Hot-Cold Re-Start • Flowline Depressurization • Insulation • Inhibition

  14. Content / Scope (4) • Shut-in / Start-up • Watercut Limit • Liquid Loading • Crossflow / Commingling Fluids • Well design and Operations • Horizontal Wells • Multi-Lateral Wells • Intelligent Wells • Well-Clean-up • Well Kick-off • WAG Injection • Integrated Modelling (well+flowline+riser) • Real-time Modelling

  15. Content / Scope (5) • Recommended approaches to use dynamic simulation for gas-lift • Purposes of dynamic modeling of gas-lift wells • Design • Design confirmation • Problem identification • Problem diagnosis • Operational optimization • Recommended modeling techniques • Recommended ways to implement dynamic models • Engineering studies • Operational systems • Case histories – how models are used, what are the benefits

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