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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?

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pump off controllers

Pump-Off Controllers

Chris Patterson

Production Group

Athabasca Oil Sub Business Unit

Canadian Foothills & Frontier Region

August 23, 2004

agenda

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
pelican lake oil

Pump-Off Controllers

Pelican Lake Oil
  • 500 Producing Horizontal
  • Wells
  • 22,000 Barrels/Day (Heavy Oil)
  • Secondary Recovery –
  • Waterflood
  • 180 Water Injectors
current well optimization technique

Pump-Off Controllers

Current Well Optimization Technique

Fluid Shot -> Change Speed -> Fluid Shot -> Change Speed

Echo

Meter

Fluid Gun

calling to change speed

Pump-Off Controllers

Calling to Change Speed

Control Room:

Please speed up from

100 to 130 rpm

project scope

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.
vendor controllers evaluated

Pump-Off Controllers

Vendor/Controllers Evaluated:

Pump-Off Controller Units

  • StellarTech
  • Grizzly Electric
  • Lufkin Automation

VFD Pump-Off Controllers (Software Upload)

  • Wermac Electric
what we currently have

Pump-Off Controllers

What we currently have

Wermac

Variable Frequency

Drive

Top Drive

SCADA

where the pump off controller fits in

Pump-Off Controllers

Where the Pump-Off Controller Fits In

Wermac

VFD

Top Drive

Controller

SCADA

Flow Sensor

vfd pump off controllers

Pump-Off Controllers

VFD Pump-Off Controllers

Wermac

VFD

SCADA

Top Drive

Software

Upload

Wermac Flow Sensor

test results

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.
controller evaluation wermac

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.
results controller off

Pump-Off Controllers

Results – Controller Off

RPM

Floco Flow

(m^3/day)

Accumulated

Volume (m^3)

Average Production:

41 m^3/day

results controller on

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

economic results

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!

recommendations

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.