Dynegy Midstream Services, L.P.Experience with the …ameritech.net . Title: Dynegy Midstream...
Transcript of Dynegy Midstream Services, L.P.Experience with the …ameritech.net . Title: Dynegy Midstream...
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Dynegy Midstream Services, L.P.Experience with the Natural Gas STARProgram
11th Annual Implementation WorkshopOctober 25 - 27, 2004Houston, Texas
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Outline
�Background
�Gas Processing Plant’s study
�Pipeline Leak Study
�Monument Gas Plant
�Future Plans.
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Background
�Dynegy Midstream Services, L.P.
�Corporate vs. Field staff
�Number of DMS facilities
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Gas Plant’s Study
�Two DMS facilities in study
�Cost was $ 30 K
�Amount methane saved = 100 MMSCF/yr
($600K @ $6/MSCF)
�Savings Realized within 18 Months – Largest
Cost-Effective Leaks Repaired
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Chico Gas Plant
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0 1
Feet
/min i i
ir
Economics of LAUF
Lost and Unaccounted For Product Potential $ Savings
Equating Pure Methane Leak Rate to Dollars
$0.00
$500.00
$1,000.00
$1,500.00
$2,000.00
$2,500.00
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Cubic Feet Per Minute
Ann
ual $
In L
ost P
rodu
ct
At $4 Per 1000 Cubic
0.238 cu ftEst mated Econom cal to Repa
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Optical Remote Leak Detection
Infrared Differential Absorption � µm � µm �Visible �Near IR -0.9 to 1.6 Microns
Remote sensing is the science and art of obtaining information about an object, area, or phenomenon through the analysis of data acquired by a device that is not in contact with the object, area, or phenomenon under investigation.
1987
Mid wave Infrared - 3 to 5 Long wave Infrared - 8 to 11
- 0.4 to 1.0 Microns
From Remote Sensing and Image Interpretation,
Lilles and and Kiefer,
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Ab
sorb
ance
1.2
1
0.8
0.6
0.4
0.2
0
Similar to Gas Chromatography
3.31µm
NIST
butane ethane propane methane water CO2
3.1 3.2 3.3 3.4 3.5 3.6
Wavelength (microns) 3.7
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Active vs. Passive Imaging
�Active techniques employ an artificial radiation source (e.g. a microwave transmitter, a laser, a thermal heater, etc.) for illumination of the target area �Passive techniques utilize the naturally occurring
ambient radiation
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Passive Remote Optical Infrared Leak Detection, Quantification, and Speciation
LSI
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LSI Camera Visualizes Gasoline Vapor
�Field Portable �Rugged �Reliable
�Repeatable
�Sensitivity
�Ease of Use - Doesn’t Require Frequent Adjustment �Capable of Identifying
“Inaccessible” Leaks
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LSI Leak Surveys Video Imagery
Flange Leak Buried Pipeline Leak
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Pipeline Leak Study
�Driving – visible signs (e.g. vegetation
stress)
�Driving with sniffer trucks twice a year
�25 – 40 miles per day
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Pipeline Leak Study
� Mass Balance Discrepancy Identified Need for
Survey
�Infrared Remote Sensing from helicopter
� 200-400 miles per day
� Amount of methane estimated at ~146 MM SCF /yr
or (0.5 MMSCFD)
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Monument Gas Plant
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Monument Gas Plant
�Original plant built in 1936
�Modifications in 1963 & 1976
�31 engines for combined 25, 000 hp
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Monument Gas Plant
�26 engines to be replaced with integral
electric compression
�18, 500 HP Replaced
�Amount of fuel saved is 1.5 BCF/yr and
Corresponding CO2 Reductions
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Monument Gas Plant
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Monument Gas Plant
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Monument Gas Plant
�Cost of this project $ 7 MM
�Amount of fugitive methane losses saved is
~41 MMSCF/yr
�Ancillary Benefit - Criteria (e.g. NOx) and
HAPs pollutant reduction
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Monument Gas Plant
� Infrared survey conducted to identify sources of
leakage
�~200 leaking sources identified
�Largest opportunities - blow down vents and valve
packing
�Amount of methane saved is ~146 MMSCF/yr $876K @
$6/MSCF
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Future Plans
�Study at least two additional gas plants and upstream
compressor stations within 12 months
�Evaluate gathering system opportunities
�Apply the information from previous studies to other
facilities
�Plan to implement DI&M surveys every two years at
gas plants/compressor stations
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Future Plans (contd.)
�Coordinated Efforts for Sharing BMPs with Field
Operations and Maintenance Personnel in 2005.
� Increase management commitment through
awareness of cost effective opportunities
� Involve the Company media relation’s more
effectively
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Acknowledgement
�David Harris
Team Advisor
Monument Gas Plant
Dynegy Midstream Services, L.P.
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Contact Information
Shankar Ananthakrishna Senior Environmental Engineer
Jeffrey A. Panek Princi lpa
Dynegy Midstream Services, L.P.Phone #: (713)-507-6753
Email: [email protected]
David FurryLeak Surveys Inc.P.O. Box 30661102 Early Blvd. Early, Texas 76802-2261 (325) 641-8147 Website: http://www.leaksurveysinc.com/
Innovative Environmental Solutions, Inc. P.O. Box 177Cary, Il 60013-0177 (847)516-3658 [email protected]