EnCana Weyburn System CO2 Sequestration

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EnCana Weyburn SystemCO2 Sequestration
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Weyburn Background
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Weyburn Project Background

• Field discovered in 1954
• 360 million barrels produced with water injection
  only
• CO2 will add 130 million barrels
• CO2 brought in through a 300 Km pipeline from a
  coal gasification plant in Beulah ND
• More than 700 wells in production
• Current production 30,000 bbl/day
• Expected production 40,000 bbl/day

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Current project facts

• EnCana tripled the production since CO2 injection
  started 6 years ago
• 30,000 bbl/day reached 2 years ahead of schedule
• Since 2000, 8 million tones of CO2 have been
  pumped underground instead of being released into
  the atmosphere
• By the time the project wraps up 30 million tones
  will be sequestered, the equivalent of taken
  nearly 7 million cars off the road
• More than 30 years of production have been added
  to the Weyburn field

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Miscible flood

• How it works
• The miscible displacement process is more than a
  simple pressure maintenance project in that it
  involves introduction of a gas (solvent) into the
  reservoir that will mix with and completely
  dissolve the reservoir oil.
• This allows the CO2-oil mixture to be swept to
  the producing well
• The flood consists of an intermittent injection
  of CO2 followed by water injection

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Injection Procedure
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Why SCADA Vantage

• Because it could handle

• Well monitoring and control
• Processing Plant
• CO2 Compression Plant
• Tank Farm
• CO2 Pipeline Monitoring
• CO2 Nomination
• Dynamometer Cards
• Field ESD
• Automatic Well Test
• Miscible Flood

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Weyburn System Overview
ABB SCADA Vantage is used throughout the field
and facilities
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Weyburn System Overview

• Injection ESD
• Miscible Flood

• Water injection wells
• Major Bingham pump units

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Weyburn System Overview

• CO2 Injection Control

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Dynacard Plot

• Plot multiple cards on screen (current and
  reference)
• View/change load limits, malfunction/ pump-off
  points the points
• Right-Click to upload/download/save data

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CO2 Sequestration
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Cost Breakdown in CO2 Sequestration

• Cost
• Capture 40-60/t CO2 avoided
• Pipeline 0.02-0.06/t .km
• Transportation mileage 300 km
• Storage 5-10/t CO2
• Break even 20 bbl

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Weyburn Background
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IPPC Carbon Capture Storage Report

• Approved by IPCC in September 2005
• Published December 2005
• Written by over 100 authors from 30 countries ,
  all continents
• Extensively reviewed by over 200 experts
• Presented at UNFCCC COP-11/ Kyoto COP/MOP-1 in
  Montreal

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Total SCADA Solution Provider