API 11V Task Group

15 November, 2007Houston, 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? • 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 OrganizationTask Group Chairman – Jim Hall, Shell Int’l E&PSecretary – Cleon Dunham, Oilfield Automation ConsultingActive 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 Process11V 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

approvalSub-

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 - PublishedSpecification (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 updatedRP11V6 – 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 - ChairpersonCleon Dunham, Oilfield Automation - SecretaryAdam Ballard, BPArne Valle, HydroDan Dees, AppSmithsEgil Henrik Uv, HydroFernado Ascencio Candejas, PEMEXDr. Fernando Samaniego, UNAM (Mexico Autonomous Nacional Uni) Galileu Paulo Henke A. Oliveira, PetrobrasGreg Stephenson, ep-solutionsKallal Arunachalam, ConocoPhillipsKen Decker, Decker TechnologyMurat Kerem, Shell Shanhong Song, ChevronTorbjørg Klara Fosum, StatoilYula 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 • 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

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

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

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