1 / 19

Pump-Off Controllers

Pump-Off Controllers. Chris Patterson Production Group Athabasca Oil Sub Business Unit Canadian Foothills & Frontier Region August 23, 2004. Pump-Off Controllers. Agenda. Pelican Lake Overview Theory of Pumped-Off Current Well Optimization Techniques What are Pump-Off Controllers?

gavrilla
Télécharger la présentation

Pump-Off Controllers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Pump-Off Controllers Chris Patterson Production Group Athabasca Oil Sub Business Unit Canadian Foothills & Frontier Region August 23, 2004

  2. Pump-Off Controllers Agenda • Pelican Lake Overview • Theory of Pumped-Off • Current Well Optimization Techniques • What are Pump-Off Controllers? • Results from Pump-Off Controller Test • Economic Evaluation • Recommendations

  3. Pump-Off Controllers Pelican Lake Oil • 500 Producing Horizontal • Wells • 22,000 Barrels/Day (Heavy Oil) • Secondary Recovery – • Waterflood • 180 Water Injectors

  4. Pump-Off Controllers What is Pumped Off? Darcy’s Eqn Flow αΔP

  5. Pump-Off Controllers Current Well Optimization Technique Fluid Shot -> Change Speed -> Fluid Shot -> Change Speed Echo Meter Fluid Gun

  6. Pump-Off Controllers Calling to Change Speed Control Room: Please speed up from 100 to 130 rpm

  7. Pump-Off Controllers Current Optimization Techniques

  8. Pump-Off Controllers Project Scope • Researched potential vendors with pump-off controllers. • Installed 8 Pump-Off Controllers from 4 vendors and ran trials – No cost to EnCana. • Reviewed results. • Obtained formal quotes c/w installation costs. • Recommended pump-off controller strategy with economic justification.

  9. Pump-Off Controllers Vendor/Controllers Evaluated: Pump-Off Controller Units • StellarTech • Grizzly Electric • Lufkin Automation VFD Pump-Off Controllers (Software Upload) • Wermac Electric

  10. Pump-Off Controllers What we currently have Wermac Variable Frequency Drive Top Drive SCADA

  11. Pump-Off Controllers Where the Pump-Off Controller Fits In Wermac VFD Top Drive Controller SCADA Flow Sensor

  12. Pump-Off Controllers VFD Pump-Off Controllers Wermac VFD SCADA Top Drive Software Upload Wermac Flow Sensor

  13. Pump-Off Controllers Test Results • StellarTech – Controller unsuited for application. • Grizzly Electric – 15% increase in production. Controller algorithm requires further modification. • Lufkin Automation – Initial install problems. Just installed (no data). • Wermac Electric – 28% increase in production. Best overall Pump-Off Controller.

  14. Pump-Off Controllers Controller Evaluation – Wermac • Operator’s are familiar with Wermac VFD’s. • No need for physical controller. • No cost for software. • Controller algorithm is robust and versatile. • Proven in Pelican Lake field trials. • Good customer service and technical help.

  15. Pump-Off Controllers Results – Controller Off RPM Floco Flow (m^3/day) Accumulated Volume (m^3) Average Production: 41 m^3/day

  16. Pump-Off Controllers Results – Controller On RPM Thermal Flow % Floco Flow (m^3/day) Accumulated Volume (m^3) Average Production: 52.5 m^3/day 28% Increase in Production

  17. Pump-Off Controllers Economic Results: • NPV After Tax @ 9%: 68 M$ • After Tax ROR: 100% • Payout Period: 7.1 months • PIR @ 9%: 3.92 M$/M$ All EnCana economic hurdles met and exceeded!

  18. Pump-Off Controllers Pump-Off Controllers:

  19. Pump-Off Controllers Recommendations: • Continue testing of controllers. • Install Wermac controllers on new infill pad under primary production (Pad NE-65) – in progress. • Include funds in 2005 Capital Budget for Wermac pump-off control – accepted. • Test using existing floco meter to replace thermal flow sensor.

More Related