加拿大油气运输公司

Methane Emissions Management at TransCanada PipeLinesby Hasan Imran (2004 Natural Gas STAR Technology Transfer Workshop, Houston, Texas. Sept. 2004)

Methane Emissions Management at TransCanada PipeLines

AGENDA TransCanada PipeLines Ltd.

Introduction & Background

TransCanada Climate Change Strategy Greenhouse Gas Emissions Emissions Management Strategy TransCanada’s Experience

Control MethodologiesResearch & Development

Conclusion

Methane Emissions Management at TransCanada PipeLines

TransCanada PipeLines at a Glance

million tonnes CO2E 10 15 20 25 038

5

Ontario Power TransAlta SaskPower TransCanada Imperial Oil Atco Power Syncrude Westcoast Suncor EnCana Dofasco Nova Chemicals Dupont Ford Canada Daimler Chrysler

Corporate GHG Emitters

Methane Emissions Management at TransCanada PipeLines

Methane Emissions Management at TransCanada PipeLines

Climate Change Policy Climate Change issue is not going away. Greenhouse Gas Emissions is potential liability for TransCanada. We have a plan in place to manage climate change. TransCanada believes in promoting global solutions to this global challenge. TransCanada believes prudent action is required. TransCanada believes in a strong commitment to technological innovation.

Methane Emissions Management at TransCanada PipeLines

Climate Change StrategyIssue Table Process

Participation in National Processes

Upstream Oil and Gas Working Group Fugitive Emissions Management

Direct Emissions Reduction

Blowdown Emissions Management Dry Gas Seals

Technology Development

Methane BiofiltrationCombustion processes Landfill Gas Reuse

Emissions Offsets

CDM/JICO2 service ?

Business Opportunities

Methane Emissions Management at TransCanada PipeLinesSource of Greenhouse Gas in TransCanada

CO2 CH4 N2O

Direct

Indirect

Electricity

Power Plants

Pipelines (include Valves, Compressor and Meter Stations) Utility Consumption - Company Vehicle - Rental Vehicle - Employee Vehicle

Cancarb - Carbon black facility

Methane Emissions Management at TransCanada PipeLines9000 8000 7000 6000

2002 vs 2003 GHG Emissions by Type

kilotonnes CO2E

5000 4000 3000 2000 1000 0 Pipe Power Indirect

Methane Emissions Management at TransCanada PipeLines

Greenhouse Gas Emissions from Pipeline Operations16,000 14,000 12,000 10,000 8,000 6,000 4,000 2,000 0 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003

kt CO 2E

Carbon Dioxide

Methane

Nitrous Oxide

Indirect

Methane Emissions Management at TransCanada PipeLines

Methane Emissions Distribution

13% 87%Greenhouse Gas Emissions

30% 70%

Methane Emissions

Greenhouse Gas Emissions

Methane Emissions

Methane Emissions Management at TransCanada PipeLines

TCPL Emissions Management System

Combustion Emissions- CO2 - CH4 - N2O - CO - VOC’s - NOx

Vented Emissions (CH4, CO2)Fugitive Emissions Blowdown Emissions

- transfer

Energy Efficiency and conservation

LDAR(leak det

ection & repair)

HFS(measurement)

R&D

compression - pipeline inspection tools - buttering and hot tapping - stopple plugs - repair sleeves - hot line lowering - incineration

Methane Emissions Management at TransCanada PipeLines

Fugitive Emissions Management(LDAR vs Measurement) High Flow Sampler Measurement - Accuracy; + 25% - identification of most “cost effective fixes” Bacharach HFS - NEW

Methane Emissions Management at TransCanada PipeLinesMSR 2% MSW 3% BMS 4% MD 1% BV 3%

CSR 22%

CST 62% CSE 3%

2003 Methane Emissions from system by Faciltiy Type

Methane Emissions Management at TransCanada PipeLinesHigh Flow Sampler Data (1999-2003)3500

Total Leaking Components measured = 19457

3000

2500

number of leaks

2000

1500

1000

500

0 1999 2000 CS 2001 MS BV 2002 2003

Methane Emissions Management at TransCanada PipeLines

Sample Field Measurement Data Analysis1.2Cumulative Fraction of Total Leak Rate

1 0.8 0.6 0.4 0.2 0 0.00

0.20

0.40

0.60

0.80

1.00

1.20

Cum ulative Fraction of Leaking Com ponents

Methane Emissions Management at TransCanada PipeLines

Benefit - Cost Effective RepairsNumber of leaking Components by Category at CS, MS & BV in 200360 % of total

TCP TCT

VS

VP

GP

HV

O

GS

PRV

FC

IC

OM

RC

CC

BL

BE

MC

RV

HA

GC

RP

Methane Emissions Management at TransCanada PipeLines

LDAR Program Achievements$3.4M $2.6 Mkilo tonne CO2E

223

191

0.454

Bcf

0.528Bcf

2002

2003

2002

2003

$ Value of gas saved Natural gas volume saved

Emissions saved

Methane Emissions Management at TransCanada PipeLines

TransCanada’s Contribution to Environment Emissions saved in no. of Tree Equivalents Total Equivalent Cars taken off the road = 42,330 Total Equivalent Homes which can be heated for one year = 3,427

280,000 270,000 270,630

no. of trees

260,000 250,000 240,000 230,000 220,000 210,000 2002 2003 232,000

Methane Emissions Management at TransCanada PipeLines

Blowdown Emissions Management (Control Methods and Technologies Used) Scheduling Practices Operational Adjustments Transfer (Pull-down) Compressors Buttered Stubs Hot Tapping Sleeves Stopples Hot line lowering

Methane Emissions Management at TransCanada Pipelines

Reducing Emissions by using Transfer Compressor

Outcome from Reduction Programs

2003 Summary of Savings from Methane Emission Reduction ProgramsMinimizing Blowdown Emissions Transfer Compression Valve Sealing Buttering & Hot Tapping Repair Sleeves Reducing Fugitive Emissions 1,132 tonnes of CO2E 626,966 61,678 154,632 164,949 223,270

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