Data Mining Operator Benchmarking Studies for Artificial Lift Statistics, Technology Trends and Equipment
Details
Wonuola Scott & Aaron Duffus: Rushmore Reviews
Cameron Laing: Laing Engineering & Training Services Ltd.
17th June 2014
“The prime objective of benchmarking is to
understand those practices which will
provide a competitive advantage in the
market place; target setting is secondary.”
Benchmarking…
Paul Allaire Chairman, Xerox Corporation
Reviewing Best Practice
“Every day that a better idea goes unused is a
lost opportunity! We have to share more and
faster to drive learning and improvement.”
-
“We emphasize shopping for knowledge
outside…rather than inventing everything
ourselves.” Ken Derr Former CEO, Chevron
Rushmore Reviews
• Drilling Performance Review, since 1989
• Completions Performance Review, since 1994
• Well Abandonment Performance Review, since 2008
• Well Interventions Performance Review, since 2011
• Shale Performance Review, since 2012
• Data from hundreds of Operating Companies in 100 countries
• Over 52,000 DPR wells & 12,000 CPR completions
– WellViewTM / OpenWellsTM / DataNetTM etc. compatible for data input
– Web based search & analysis tools
Completions Review - Data & Uses
• 143 Data Items & Text Comments covering
– Well Description
• Depths /Temp /Press /Angle/ Multilaterals/Zonal Isolation/ PDHG /Compl fluid/ Csg-Liner-Tbg-
OH/Perforation Conveyance /Materials /H2S-CO2/Sand Control Equipt/Tree type/ Artificial Lift
/ Workover Reasons & remedial ops/Stimulation & other ops/ New Technology etc.
– Operational Timing
• Activity time / Non-productive time / WOW time
– Well Cost
• Total Cost / Overheads / Tangibles
– Completion Diagram
– Some Time/Event Plots
• Used for Planning / Timing /Budgets /Economics / Performance
Comparison / Experience Sharing / Peer to Peer Contacts / Ideas!
Norway, Denmark & UK
• Producing Oil Wells with AL
• Number of Completions per Year
– Platform and Subsea • 2013 data not yet fully published
Subsea Platform
Well
co
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Significance of Artificial Lift
• 80% of UK Subsea Well Completions are designed for Artificial Lift
• 67% of North Sea Offshore Completions are designed for Artificial Lift
– >75% in UK and ~50% in Norway
No UK/Norway government statistics on Artificial Lifted Production
– no special R&D emphasis.
Rushmore Reviews Database Global Offshore Artificial Lift Types
UK/NO/DK
GL, 80.19%
Rest of the world Other, 0.32%
Rushmore Reviews Database Global Offshore Artificial Lift Types
GL, 80.19%
UK/NO/DK Rest of the world
(Platform) ESP (Subsea), 2.70%
Other, 0.32%
Combinations & Innovations found in the Review data
• ESP with Gas Lift back-up
– UK “subsea” / West Africa “platform”
• Gas Lift with Hydraulic Jet Pump option (Pakistan “land”)
• Deepwater wells with lift on seafloor (ESP/Multi-phase pump)
• Auto ”Gas Cap” Gas Lift (hydraulic control) subsea
• Water Injectors / Gas Wells with AL (ESP/GL/HJP) for clean
up / back flow
• Can-K Twin Screw PDP (ESP motor drive)
ESP Equipment Trends: Last 30 UK Offshore ESP Completions
• Location
– 21 platform & 9 subsea (30%)
• 4 Operators
– Chevron: 11 / Ithaca: 10 / EnQuest: 7 / Talisman-Sinopec: 2
– Subsea: Ithaca:5 / Enquest:2 / Talisman-Sinopec: 2
• Dual ESPs
– 15 (50%) / 6 Platform & 9 Subsea (100% of Subsea ESP completions)
• Pod ESPs
– 23 (77%) / 16 Platform & 7 Subsea (78% of Subsea ESP completions)
– 13 Dual Pods / 6 Platform & 7 Subsea
• Workovers
– 15 W/O: 14 Platform & 1 Subsea
– Average time since last installation: 3.3 years
– Average time since last installation (excluding unique cases*): 1.5 years
– Subsea well time since last installation: ~2 years
* two platform well re-entries 12 & 15 years after last installation
Gas Lift Equipment Trends: Last 30 UK Offshore GL Completions
• Location
– 13 Platform & 17 Subsea (57%)
• Annular Safety Valves
– 3 Platform (23%) & 0 Subsea
– 1 Dual Tubing Hanger (no ASV)
•Number of Mandrels
– Maximum: 7
– 10 or more seen in older North Sea Completions
– Average: 2.75
•Dual Gas Lift Completions
– None since original Union Oil Heather completions?
Well Interventions Review
• New Review with 130+ well interventions and growing
• 7 interventions involved gas lift work - at least 1 GLV change out required multiple runs
• 1 intervention was related to confirming a successful switch between dual ESPs