presentation 25-07-10
TRANSCRIPT
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Foreword Summary
Transmission System
Demand Supply Scenario
Gas Production
Drilling Program
Evacuation Needs
Simulation ResultsEvacuation Options
Evaluation of Options
Sector Capabilit ies
Major Challenges
Conclusions
Contents___________________
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Foreword________________ PB and its companies are implementing a
number of projects to improve current gas
supply situation at the earliest. Among IOCs,Chevron plans to increase BY, JB & MB fieldproductions over the next 3 years.
Chevrons plan was reviewed by EMRD on23 June 2010. Findings of a simulation exercisedone by PB were also placed in the reviewmeeting.
A comprehensive gas evacuation plan has nowbeen drawn as directed. Results of the analysiswith particular focus on evacuation ofChevrons additional gas are now presented forreview and decision by EMRD.
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A network simulation exercise was done under thesupervision of PB using GTCLs Pi p el i n e St u d i o Software.
Planned gas production from various fields and
demand projection (mmscfd) up to Y 2015 wereused as inputs in the exercise:
New Pipelines required for full evacuation of
additional gas were identified through carefulexamination/evaluation of options.
Pipelines include long distance new trunk linesand also loop-lines required for de-bottlenecking of
existing system, targeted for completion withinnext 2-4 years.
Summary___________________
37823412340228222487Production
37463591334130432520Demand
20152014201320122011
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BKB
Hub
CGS
Demra
Siddhir-
ganj
TFA
TFA
Feni GF
BKB
BFA
BFA
BFA
20
30
LEGEND
Firm lines: Existing
Dotted lines: Under Implementation/Proposed
KTL
JB
BY
BB
FNG
24
24
14 20
1230
JFA
RSD
HBJ
2014
30 24
30 24
24
JFA
MBMuchai
HBJ Hub
TGF
Bangura GF
24
24
30
30 30
AshuganjMS
APS/AFC
DhanuaMS
WestZone
TFA TFATFA/
GPS/
UFFL/
PUFF
24
3012
3030
30
24
1212
Elenga
MS
TFA/
RPCLTFA/
JFCL
MonohordiMS
24
Meghna
Salda
Gas Transmission System____
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DemandSupply Scenario____
Present demand-supply scenario is imbalanced by nearly a 20% gap based on daytotal demand. At peak hourly demand rates, gas off-take exceeds throughput by a
higher margin to the tune of 30%.
Gas demand projection (mmscfd) of six PB marketing companies upto Y 2015 is asfollows:
The production augmentation plan of Petrobangla including that of IOCs, Chevron in
particular, is aimed at minimizing the demand-supply imbalance at the fastestpossible time
4162398937123382280119812363Gross Demand
37463591334130432520Demand at 90% LF
16716010468777BAPEX/SGCL
2021991971361027691PGCL
305303301308181131131JGTDCL
530523512502485250380KGDCL
120110105100905472BGSL
2838269424932268193614701689TGTDCL
20152014201320122011
Future DemandPresent
Availability
Present
Demand
Company
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Gas Production_____________ Total gas production in the country is around 2000 mmscfd.
PB companies produce 947 mmscfd (47% of total). 393 mmscfd will badded by Y 2012 and 180 mmscfd by Y 2015.
Chevron fields produce 900 mmscfd (45% of total). 180 mmscfd will beadded by Y 2011, 380 mmscfd by Y 2012 and 380 mmscfd by Y 2013.
Remaining 160 mmscfd (8% of total) is produced by two other IOCs:Tullow (120 mmscfd) and Cairn (40 mmscfd). Cairn will add 30 mmscfdfrom Sangu (south) by Dec 2010.
Total additional PB + Chevron + Cairn production will be:
210 mmscfd by Y 2011
+ 773 mmscfd by Y 2012
+ 380 mmscfd by Y 2013
+ 180 mmscfd by Y 2015.
1543 mmscfd
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152013501340134011851055947977Sub-total :
Kapasia/
Mubarakpur
60606060601500
Sundalpur/
Srikail/
15151515151500Semutang
15151515151500Meghna
888888815Shahbazpur
5656565636363634Bakhrabad
383838383823811Salda
3333333333333335Narsingdi
25251515151572Sylhet
1616161616161618Beanibazar
12797979797979797Kailashtila
6565656565452532Fenchuganj
12484848449494953Rashidpur
260260260260260260260260Habiganj
678578578578478428408420Titas
Dec-15Dec-14Dec-13Dec-12Dec-11Dec-10Existing
Production
Existing
Capacity
PRODUCTION AUGMENTATION PLAN (mmscfd) - Petrobangla Fields
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42823912390233222487217720392020Total :
5005005005000000
LNG IMPORT (Equivalent mmscfd)
22622062206214821302112210921043Sub-total:
00000000Block-7
2000000000Offshore bidding 2008
30303030303000Sangu (South)
4040404040404035Sangu
22222223Feni
120120120120120120120100Bangura
108010801080900720720720600Bibiyana
360360360160160606075Moulvibazar
430430430230230150150230Jalalabad
Dec-15Dec-14Dec-13Dec-12Dec-11Dec-10ExistingProduction
ExistingCapacity
PRODUCTION AUGMENTATION PLAN (mmscfd) - IOC FIELDS
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13931223122312231068938893919Sub-total :
1515151515000Mubarakpur
1515151515000Kapasia
1515151515000Srikail
15151515151500Sundalpur
15151515151500Meghna
5656565636363634Bakhrabad
383838383823811Salda
3333333333333335Narsingdi
10474747474747474Kailashtila
6565656565452532Fenchuganj
12484848449494953Rashidpur
220220220220220220260260Habiganj
678578578578478428408420Titas
Dec-15Dec-14Dec-13Dec-12Dec-11Dec-10
Grid Intake VolumesExisting
Production
Existing
Capacity
PROJECTED GRID INTAKE VOLUMES AGAINST AUGMENTED PRODUCTION (mmscfd) - By Petrobangla
Fields
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39653595359532152330202019451927Total :
5005005005000000
LNG Import (Equivalent to mmscfd)
20721872187214921262108210521008Sub-total:
00000000Block-7
2000000000Offshore bidding 2008
30303030303000Sangu (South)
22222223Feni
120120120120120120120100Bangura930930930750720720720600Bibiyana
360360360360160606075Moulvibazar
430430430230230150150230Jalalabad
Dec-15Dec-14Dec-13Dec-12Dec-11Dec-10
Grid Intake VolumesExistingProduction
ExistingCapacity
PROJECTED GRID INTAKE VOLUMES AGAINST AUGMENTED PRODUCTION (mmscfd) - By IOC Fields
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Drilling Program ___________
Short Term (Up to Dec. 2010)
- Work over : 6 wells
- Appraisal : -
- Exploration : 1 well
Mid Term ( Up to Dec. 2013)
- Work over : 1 well- Appraisal : 10 wells
- Exploration : 3 wells
Long Term ( Up to Dec. 2015)
- Appraisal : 9 wells
- Development : -
- Exploration : -
Short Term (Up to Dec. 2010)
- Work over : -
- Appraisal : -
- Exploration : 1 well
Mid Term ( Up to Dec. 2013)
- Work over : -- Appraisal : -
- Development :19 wells
Long Term ( Up to Dec. 2015)
- Appraisal : -
- Development : 3 wells
- Exploration : -
PB Chevron
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Evacuation Needs________
For increased Production - PB
Among PB fields, the entire increased production of TGF (270 mmscfd) can/would be
evacuated without flowing through Compressor Stations. To this end 30 inch dia. 61 km
loop line project has been taken up for completion by Y 2013.
Increased production of other three PB fields KGF, FGF & RGF (145 mmscfd) over the
existing production of 150 mmscfd (total 295 mmscfd) will be needed to be evacuated
through Muchai & Ashuganj Compressor Stations by Y 2012.
For increased Product ion Chevron
JBF :
Present production of 150 mmscfd is being evacuated by existing pipelines leaving
behind a stranded production of 80 mmscfd.
Total 230 mmscfd existing production capacity can/would be evacuated once MuchaiCompressor Station is commissioned by Y 2011 followed by Ashuganj Compressor
Station to be commissioned by Y 2012.
Additional 200 mmscfd in Y 2013 would require a new evacuation route because this
volume can not be passed through existing pipelines and Compressor Stations to be
installed.
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MBF: Present production of 60 mmscfd is being evacuated by existing pipelines.
Total additional production of 300 mmscfd by Y 2012 together with existing 60 mmscfd
(total 360 mmscfd) can/would be evacuated once Muchai Compressor Station is
commissioned by Y 2011 followed by Ashuganj Compressor Station to be commissioned by
Y 2012.
BYF
Present production of 720 mmscfd is being evacuated by existing pipelines.
150 mmscfd out of total additional production of 360 mmscfd by Y 2013 would be required
by and supplied to the two Bibiyana IPPs targeted for completion by Y 2013 leaving 210
mmscfd for evacuation to the national gas grid
Total additional production of 210 mmscfd by Y 2013 available for national gas grid together
with existing 720 mmscfd (total 930 mmscfd) can not all be evacuated by the existing
pipelines and Compressor Stations.
Taking into account 1160 mmscfd (max) capacity of Muchai Compressor Station and
considering the production of above mentioned PB & Chevron fields which must be routed
through the Muchai Compressor station, the calculated volume of BYF that can be
passed through this compressor station is only 275 mmscfd.
Therefore, the remainder 930-275 = 655 mmscfd of BYF production must have a altogethernew evacuation route to be established at the soonest.
Evacuation Needs (contd.)____
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Evacuation of Chevrons planned additional 300 mmscfd from Moulvibazar GF :
Construction of 22 km parallel pipeline from Moulvibazar GF to Muchai Manifold
Station.
2.
Evacuation of Chevrons planned additional 560 mmscfd from Jalalabad GF
and Bibiyana GF :
Option-A : JBF-BYF-Muchai-Ashuganj-Monohordi through Compressor
Stations at Muchai & Ashuganj(210 km)
Option-B : JBF-BYF-Dhanua bypassing Compressor Stations (190 km)
Option-C : JBF-BYF-Muchai-Ashuganj-Monohordi Dhanua- Elenga
Bypassing Compressor Stations at Muchai & Ashuganj (300 km)
1.
Description of PipelineSl. No
Simulation Results__________
Pipelines required to evacuate additional production from upstream of Muchai
Compressor Station
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Dhanua to Elenga : This section of pipeline (30 inch dia. 52 km) is part of
approved project namely Monohordi-Dhanua-Elenga-East bank of Jamuna Bridge
project. Construction of Monohordi-Dhanua and Elenga-East Bank section is
ongoing under ADB finance. Financing for Dhanua-Elenga section need to bearranged.
2.
Khatihata to BhadugarB.Baria (TGF L-A): Construction 24 inch dia. 12 km high
pressure (1135 psig) pipeline to evacuate 200 mmscfd additional gas productionfrom Titas Gas Fields.
1.
Bangabandhu Bridge West End to Nalka: This section of pipeline (30 inch dia.
15 km) is part of approved project namely East Bank of Jamuna Bridge to Nalka,
Hatikamrul to Ishwardi to Bheramara project. Construction of Hatikamrul to
Ishwardi to Bheramara section is ongoing under ADB finance. Financing for
Bangabandhu Bridge West End to Nalka section need to be arranged.
3.
Description of PipelineSl. No
Pipelines required for de-bottlenecking of existing transmission system.
Simulation Results (Contd.)_______
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Mubarakpur GF to Baghabari: Construction of 12 inch ND X 30 km pipeline from Mubarakpur gas field to
Baghabari CGS is needed for evacuation of gas from Mubarakpur gas field.4.
Srikail GF to AB Pipeline: Construction of 8 inch ND X 3 km pipeline from Srikail gas field to AB pipeline MLV-
2 (Karoibari) intake point is needed for evacuation of gas from Srikail gas field.3.
Description of PipelineSl.
No
Sundalpur GF to Feni : Construction of 12 inch ND X 30 km pipeline from Sundalpur gas field to Bakhrabad-
Chittagong pipeline intake point at Feni is needed for evacuation of gas from Sundalpur gas field.2.
Kapasia GF to Amraid: Construction of 12 inch ND X 4 km pipeline from Kapasia gas field to Monohordi-
Dhahua pipeline intake point at Amraid is needed for evacuation of gas from Kapasia gas field.
1.
Simulation Results (Contd.)_______
Pipelines required for hook up of new gas fields.
Pipeline required for evacuation of LNG.
Description of PipelineSl. No
Maheshkhali to Rangadia: Construction of 30 inch Dia X 90 km pipeline from Maheshkhali LNG receiving
station to Rangadia hook-up point of Chittagong Ring Main for evacuation of LNG.
1.
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Evacuation Options_____________
Evacuation Route : Option-A : JB-BY-Muchai-Ashuganj-Monohordi (210 km)
Flow through Compressor Stations, required Comp cap (Muchai 2010, Ashuganj-2350 mmscfd)
Evacuation Route : Option-B : JB-BY-Dhanua (190 km)
Flow through Compressor Stations, required Comp cap (Muchai 1160, Ashuganj-1500 mmscfd)
Evacuation Route: Option-C : JB-BY-Muchai-Ashuganj-Elenga (300 km)
Flow not through Compressor Stations, required Comp cap (Muchai 1160, Ashuganj-1500
mmscfd)
Simulation exercise was carried out for evacuation of 790 mmscfd out of a total 940 mmscfd
additional gas production by Chevron from its three fields by Y 2013 considering the balance 150
mmscfd to remain dedicated for the two Bibiyana IPPs.
Taking into account Muchai Compressor Station designed capacity of 1160 mmscfd and that of
Ashuganj Compressor Station 1500 mmscfd, a quantity of 850 mmscfd gas will be needed to be
evacuated bypassing the Muchai & Ashuganj Compressor Stations.
To address the above evacuation need the simulation exercise presents three different options
complying with steady state convergence which are as follows and pictorially depicted in the next
three linked slides:
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Does not converge due to pressure
mismatch
Converges with a 34 inch dia pipelineConverges with a 34 inch dia pipelineSimulation
convergence
Option-COption-BOption-ACriteria
JBF-BYF-Muchai-Ashuganj-Elenga
bypassing compressors
JBF-BYF-DhanuaJBF-BYF-Muchai-Ashuganj-Monohordi
through compressors
Route
BDT 3500-4000 CroresBDT 2300-2500 CroresBDT 3200-3500 CroresEstimated Cost
Will be limited to existing gas fields
only
Proximity to future gas source locations in
Sunamganj & Netrakona Districts.
Will be limited to existing gas fields onlyConnectivity
Same evacuation corridor as the
existing one requiring additional land
acquisition
Alternative evacuation corridor will be
developed under this option offering
increased operational flexibility & overall
system reliability
Same evacuation corridor as the existing
one requiring additional land acquisition
which presents difficulties at many
locations due to infrastructure development
Corridor
Bypasses Muchai & Ashuganj
Compressor Loop, but this option
does not converge in the simulation
Route is different from Muchai & Ashuganj
Compressor Loop enhance no additional
compression capacity needed.
Passes through Muchai & Ashuganj
Compressor Loop and Muchai & Ashuganj
Compressor capacities need to be almost
doubled.
Compression
Developed terrain, Hilly area 2 km,
Tea & Rubber Garden 10 km.
Remaining 288 km is normal cross-country land. Involves major river
crossings (Meghna & 9 others)
30 km out 190 km is Haor area, remaining
160 km is normal cross-country land. About
40 km falls under forest area. Haor arearemains dry for nearly 5 months with paddy
cultivation. Water table is learnt to remain
20 feet below land surface and cultivation
requires irrigations
Developed terrain, Hilly area 2 km, Tea &
Rubber Garden 10 km. Remaining 198
km is normal cross-country land. Involvesmajor river crossings (Meghna & 6 others)
Terrain Condition
300 km190 km210 kmLength
Evaluation of Options________
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GTCL operates 9 major high-pressure transmissionpipeline systems (20-30 inches Dia).
Out of these pipelines initial 5 were built by expatriateEPC contractors.
Subsequent 4 pipelines were designed & materialsprocured by GTCLs personnel and construction doneby local contractors under GTCL supervision.
Currently 7 pipeline (12-30 inches Dia) projects underimplementation out of which 3 are near completion.
Sector Capabilities______________
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GTCL now has proven capabilities for Front End Engineering Design and
Detailed Engineering Design for high pressure transmission pipelines
Presently 14 nos. of local contractors of Category-1.4 have the proven
capabilities for constructing high pressure transmission pipelines pipelines
upto 30 inches Dia
Regulating & Metering Station FEED is done by GTCL but constructed by
expatriate EPC contractors. Recently the EPCs use local contractors for in-
situ fabrication, erection & installation of the stations
HDD River Crossing work are needed to be done by expatriate EPCs.
Sector Capabilities (Contd.)__________
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Land Acquisition/Requisition for Right of Way (ROW) involves huge
complication and unexpected delays.
Long Lead Times are needed for Material Procurement typically
divided in 7-10 bid packages often requiring re-biddings.
Pipeline Construction activity is season-bound. Window of
opportunity typically lasts for maximum six months of the year.
Financing and project approval is a very protracted process causing
delay in project implementation.
Environmental study and clearance is also a circuitous and long
drawn process. Due to a number of large size transmission pipeline projects being
implemented, GTCL has human resource limitations as well.
Major Challenges_____________
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Conclusions_______________ Petrobangla observes Option-B (JB-BY-Dhanua) pipeline as the preferred solution
from operational point of view.
Considered from route/terrain characteristics point of view, about 30 km length (15%
of total) presents some challenge which may be overcome by technological
alternatives for construction to be decided in due course.
For expeditious implementation the pipeline is recommended for construction under
a turn-key contract for which necessary draft bid documents are available in GTCL.
Land acquisition for the ROW need to be started from next dry season (beginning
Nov 2010). The construction of the pipeline can commence from Nov 2011
provided the land acquisition is completed by that time.
The financing of the project to be decided by the GoB expeditiously.