Transcript Document 7740649

API 11V Task Group
15 November, 2007
Houston, USA
Agenda
• Introduction
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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
API Organisation
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
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
Nominal Timeline for a document
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 TroubleShooting 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
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
Gas-Lift Specifications and
Recommended Practices – New Work Item
Recommended Practice for Dynamic Simulation of Gas Lift Wells and
Systems
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
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
Content / Scope (2)
• Typical Gas Lift Operations
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Continuous Gas Lift
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Dual gas-lift
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Gas-lift of gas wells
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Intermittent gas Lift
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Single Point Gas Lift Injection
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Subsea Interventionless Gas Lift
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Well Kick-off
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Well Clean-up
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Riser Gas Lift
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Dry Gas Injection
• When to start Gas Lifting
• Dynamic Simulation vs NODAL Analysis
• Black Oil vs Fluid Composition
Content / Scope (3)
Flow Stability
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Cause of Slugging Conditions
Slug Size and Frequency
Operational instability – heading
Determine cause(s) of heading
Determine possible cures
Water Accumulation
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Corrosion Rate
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Corrosion Inhibition
Production Chemistry – Flow Assurance
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Hydrates Dissociation/Formation
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Wax Appearance Pressure-Temperature
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Hydrates/Wax Avoidance Method
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Pressure-Temperature Control
Remove Supply of Water
Hot-Cold Re-Start
Flowline Depressurization
Insulation
Inhibition
Content / Scope (4)
• Shut-in / Start-up
• Watercut Limit
• Liquid Loading
• Crossflow / Commingling Fluids
• Well design and Operations
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Horizontal Wells
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Multi-Lateral Wells
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Intelligent Wells
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Well-Clean-up
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Well Kick-off
• WAG Injection
• Integrated Modelling (well+flowline+riser)
• Real-time Modelling
Content / Scope (5)
Recommended approaches to use dynamic
simulation for gas-lift
Purposes of dynamic modeling of gas-lift wells
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Design
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Design confirmation
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Problem identification
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Problem diagnosis
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Operational optimization
Recommended modeling techniques
Recommended ways to implement dynamic
models
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Engineering studies
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Operational systems
Case histories – how models are used, what are
the benefits