Methane Emissions Management at TransCanada PipeLines

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					Methane Emissions Management at
TransCanada PipeLines
by 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 Methodologies
         Research & Development
•Conclusion
 Methane Emissions Management at
 TransCanada PipeLines

TransCanada PipeLines at a Glance
                     million tonnes CO2E




                          10
                               15
                                     20
                                           25




                 0
                     5
                                                38
  Ontario Power
     TransAlta

    SaskPower
   TransCanada

    Imperial Oil

   Atco Power
     Syncrude
                                                                              TransCanada PipeLines




    Westcoast

       Suncor
                                                     Corporate GHG Emitters




       EnCana
      Dofasco

Nova Chemicals
                                                                              Methane Emissions Management at




       Dupont

   Ford Canada
Daimler Chrysler
     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 Strategy
                                     Issue Table Process
Participation in                     Upstream Oil and Gas Working Group
National Processes
                                                Fugitive Emissions Management
             Direct Emissions                   Blowdown Emissions Management
             Reduction
                                                                   Dry Gas Seals
                                Technology                         Methane Biofiltration
                                Development
                                                                   Combustion processes

                                                                              Landfill Gas Reuse
                                          Emissions Offsets
                                                                              CDM/JI


                                                              Business                     CO2
                                                              Opportunities                service ?
 Methane Emissions Management at
 TransCanada PipeLines

                               Source of Greenhouse Gas in
                                      TransCanada




               CO2
               CH4                                                      Electricity
                          Direct                             Indirect
               N2O




Power Plants       Pipelines (include Valves,
                    Compressor and Meter
                           Stations)

                                                             Utility Consumption


                                       - Company Vehicle
Cancarb - Carbon
                                       - Rental Vehicle
  black facility
                                       - Employee Vehicle
                   Methane Emissions Management at
                   TransCanada PipeLines
                  9000


                  8000
                                      2002 vs 2003
                                  GHG Emissions by Type
                  7000


                  6000
kilotonnes CO2E




                  5000


                  4000


                  3000


                  2000

                  1000


                     0
                         Pipe        Power           Indirect
                Methane Emissions Management at
                TransCanada PipeLines
Greenhouse Gas Emissions from Pipeline Operations
              16,000


              14,000


              12,000


              10,000
   kt CO 2E




               8,000


               6,000


               4,000


               2,000


                  0
                       1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003

                                Carbon Dioxide    Methane    Nitrous Oxide   Indirect
  Methane Emissions Management at
  TransCanada PipeLines

Methane Emissions Distribution


         13%
                                  30%
                                                      70%
                            87%
                                        Methane Emissions

 Greenhouse Gas Emissions




     Greenhouse Gas Emissions            Methane Emissions
         Methane Emissions Management at
         TransCanada PipeLines

         TCPL Emissions Management System


Combustion Emissions                               Vented Emissions (CH4, CO2)

 - CO2       - CO
 - CH4       - VOC’s                Fugitive Emissions       Blowdown Emissions
 - N2O       - NOx

                                                            - transfer compression
                          LDAR                              - pipeline inspection tools
Energy Efficiency and     (leak detection      HFS
conservation                                (measurement)
                                                            - buttering and hot tapping
                          & repair)
                                                            - stopple plugs
                                                            - repair sleeves
                                                            - hot line lowering
                        R&D                                 - 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 PipeLines
                        MD
                  BMS   1%    BV
         MSR
                   4%         3%
          2%
       MSW
        3%




      CSR
      22%




                                              CST
                                              62%
            CSE
            3%

   2003 Methane Emissions from system by Faciltiy Type
                         Methane Emissions Management at
                         TransCanada PipeLines
                                           High Flow Sampler Data (1999-2003)

                  3500                                               Total Leaking Components measured = 19457



                  3000




                  2500
number of leaks




                  2000




                  1500




                  1000




                  500




                    0
                            1999    2000                    2001                2002                2003

                                                     CS   MS   BV
                            Methane Emissions Management at
                            TransCanada PipeLines
    Sample Field Measurement Data
    Analysis

                                    1.2
Cumulative Fraction of Total Leak




                                     1

                                    0.8
              Rate




                                    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 Repairs
                             Number of leaking Components by Category at CS, MS & BV in 2003




                 60 % 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                                            223




                                    kilo tonne CO2E
 $2.6 M


                                                      191

             Bcf      0.528
     0.454
                              Bcf

                                                      2002         2003
   2002              2003
                                                        Emissions saved
   $ Value of gas saved
   Natural gas volume 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

                        260,000
         no. of trees




                        250,000
                        240,000   232,000
                        230,000
                        220,000
                        210,000
                                               2002   2003
    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 Programs
Minimizing Blowdown       1,132 tonnes of CO2E
Emissions
Transfer Compression      626,966


Valve Sealing             61,678


Buttering & Hot Tapping   154,632


Repair Sleeves            164,949


Reducing Fugitive         223,270
Emissions
   Savings Outcome

Methane Emissions and Savings
(million tonnes of carbon dioxide
equivalent - Mt CO2E)

                      1995   1996   1997   1998   1999   2000   2001   2002   2003

Methane Emissions     3.29   2.82   2.55   2.45   2.37   2.15   1.06   0.82   0.81
Savings               0.15   0.23   1.74   1.26   1.20   2.10   1.59   1.24   1.13
  Methane Emissions Management at
  TransCanada PipeLines

Research & Development

Incineration of Blowdown Gas using new Technology
Biofilter for Meter station methane emissions oxidation
Dry Gas Seal Emissions capture technology
Incineration Methane emissions by the use of CH4Reactor
Fuel Cells
              Methane Emissions Management at
              TransCanada PipeLines
Technology R&D at TCPL
(use of incinerator for blowdowns)

•Incineration of blowdown gas instead of
venting (after transfer compression)
•At Caron Compressor Station, Moose Jaw,
November 2002

             GHG Emission Comparison with & without
              Incineration after Transfer Compression

                               1315
             1500
tonne CO2E




             1000
                                                   212
             500

               0
                    CO2 equivalent from   CO2 from methane
                     methane venting        incineration     Emission savings of 1,100 t CO2E
      Methane Emissions Management at
      TransCanada PipeLines

   Biofilter Pilot Plant for Methane Emissions
   Reduction
                                    Meter Station, Alberta

Research at University of Calgary




                                             Biofilter
  Methane Emissions Management at
  TransCanada PipeLines
                                              100.0

Biofilter Pilot Plant for                               80.0


Methane Emissions




                            % Oxidation
                                                        60.0


Reduction                                               40.0

                                                        20.0

                                                         0.0
                                                               1   2   3   4      5    6    7    8    9    10    11   12
                                                                                        Month

                                                                               Predicted        observed



                                                         100

                                                          80




                                          % oxidation
                                                          60

                                                          40

                                                          20

                                                           0
                                                           9:00 AM     12:00 PM       3:00 PM    6:00 PM        9:00 PM
                                                                                        Time
    Methane Emissions Management at
    TransCanada PipeLines
Compressor Dry Gas Seal Emissions
Mitigation Research Project

•Use of gas-gas ejector to recompress seal gas emissions
•Re-injecting to high pressure system
•Application to TransCanada Compressors would save
   538   MMSCF/yr. of natural gas

   227,000   tCO2E/yr. of greenhouse gas emissions

•Negligible operating cost
 Methane Emissions Management at
 TransCanada PipeLines
Compressor Dry Gas Seal Emissions
Mitigation Research Project
  Methane Emissions Management at
  TransCanada PipeLines
Compressor Dry Gas Seal Emissions
Mitigation Research Project
                                  227 kt CO2 E/yr.
653 t CO2 E/yr.                      (538 MMCF/yr)


   1 seal
                                     348 seals

Emissions Value = $ 0.68 M

Market value of gas = $   3.70M
@ $6.84/1000 ft3
 Methane Emissions Management at
 TransCanada PipeLines
CONCLUSION - Cost Curve
                                  Methane
                                  Management
                                  Programs in
                                  place
  Cost to Reduce GHGs ($/tonne)




                                  GHG Emissions Reductions Required(million tonnes CO2e)
Methane Emissions Management at
TransCanada PipeLines

				
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