the wallumbilla hub: integrating queensland’s pipeline ... · the wallumbilla hub: integrating...
TRANSCRIPT
Craig Clarke, Manager Construction Engineering APGA Annual Convention, Gold Coast
October 2015
The Wallumbilla Hub: Integrating Queensland’s Pipeline Infrastructure to Meet the Changing Demands of the East Coast Gas Grid
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Outline
East Coast Gas Grid
Changes in the Market
Wallumbilla Development
Wallumbilla Hub Services
APA Wallumbilla Hub Project
Project Challenges
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APA Pipeline Network & East Coast Grid
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The Changing Market
Previously – Point to Point Pipelines
Customers Now – Integrated Delivery and Services
– Multiple Receipt & Delivery Points
– Storage Services
– Gas Processing & Quality Management
– Gas Trading Markets
Enabled by the development of:
– Pipeline Bi-directional Capabilities
– Pipeline & Producer Interconnections
– Interruptible Haulage & Storage Services
– Service Hubs
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Wallumbilla Development Timeline
Development of Roma Fields & RBP Pipeline 1960s
Kincora and Silver Springs Gas 1970s
State Gas Pipeline (QGP) 1989
RBP Looping completed 2002
SWQP Pipeline 1996 – Ballera Gas
Spring Gully & Fairview CSG 2005 & 2007
QSN Link 2009 - SEA Markets
Berwyndale & Darling Downs Pipelines 2009
Top – Wallumbilla Facility Circa 90’s Lower – Roma Fields Receipt Piping
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APA Wallumbilla Hub - The Last 5 Years SWQP & QSN Looping 2012
Wallumbilla Compressor Station No. 2 (WCS2) 2012
SWQP Bi-Directional Flow 2014
BWP Bi-Directional Flow 2014
Easternhaul Interconnect Services 2014/15
Wallumbilla Compressor Station No. 3 (WCS3) 2015
GLNG CRWP Supply Commissioned 2015
RBP Bi-Directional Flow 2015
APA Wallumbilla Hub – August 2015
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Wallumbilla Hub
Interconnection of 3 Main Transmission Pipelines
CSG & Conventional Gas Producers
Connections to LNG Export Pipelines
Number of New & Expanded Services
– Compression & Pressure Management
– Redirection Services
– Gas Storage & Processing
– Quality Monitoring
– Trading Market
Wallumbilla Gas Hub – August 2015
QGP
AGL LPG
Santos
GLNG Origin
BWP
SWQP
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The APA Wallumbilla Hub Project
SWQP Bi-Directional Flow
Expanded Pressure Management Services
– Interconnect Gas Producers & Pipeline Systems
– Pressure & Flow Control Services
– Additional Compression Services
New Redirection Services
– Gas Quality Monitoring & Measurement
Pipeline Bi-Directional Flow Services
– RBP & BWP
Top – Brownfield Piping Modifications Lower – Receipt Flow Control Skid
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APA Hub Project - Pressure & Flow Services
Interconnection of Delivery & Receipt Points
Pressure Reduction & Compression Services
– 12 Pressure / Flow Control Skids
– WCS3 Compressor Services
Multiple Headers
– Four Pressure Headers
– Lean & Conventional Headers
Nomination Management
Multiple Operating Configurations
– Automated Controls for Mode Switching
WCS3 - 3x M90-C406 Compressor Sets (250 TJ/day/unit)
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APA Hub Project - Redirection & Gas Quality
Redirection Services
– Gas Delivery & Receipt Routing
– CSG – Conventional Gas Swaps
Gas Quality Monitoring & Management
– Out-of-Specification Gas Management
Bi-Directional Transmission Pipeline Flows
– Market Nominations – Domestic & LNG Export
– Lean and Conventional Operation
• RBP – 10” Conventional Easternhaul
• RBP – 16” Lean Gas Westernhaul
Top – Skids on N-S Pipe Racks
Lower – BWP Flow Reversal Skid
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Other Hub Services – Storage & Processing
Underground Storage using Depleted Reservoirs
– CSG Ramp-up Gas Management
– Production Maintenance & Gas Continuity
Gas Processing
– Clean-up of NG Heavies in Stored Gas
– Reprocessing for Sales Gas Specification
Recommissioned Wallumbilla LPG Plant
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Wallumbilla Gas Trading Market
Gas Commodity Trading
– Voluntary market
– Gas sale & purchase bids
– Does not include pipeline transportation
Pipeline Capacity Trading
Hub Facilities Facilitate:
– Physical Gas Receipt & Delivery
– Pressure Management Services
– Measurement & Gas Quality Monitoring
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APA Hub Facilities at a Glance
9 Receipt Connections & 9 Delivery Connections
9 Compressor Units
– 6 Reciprocating Compressor Sets
– 3 Centrifugal Compressors
11 Gas Chromatographs
– 6 C6, 3 C9+ & 2 Sulphur Analysers
17 Flow Meters
19 Pressure / Flow Control Facilities
Above: Wallumbilla Control Room HMI
Lower: WCS2 Cat G3608LE driven JGD/4
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APA Wallumbilla Simplified Schematic
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APA Wallumbilla Simplified Schematic
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Project Design Challenges
Scope Growth & Schedule
Design Pressure, Temperature, & Flow Constraints
Physical Layout Design
– > 130 P&ID’s
– Integrating Existing Assets
– Brownfields Tie-ins
Maintaining Existing Services
– Decommissioning & Relocation
Legacy Records & Information
Redirection & Pressure Management Layout Model
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Project Construction Challenges
Brownfield Works
Maintaining Service
Multiple Work Fronts
Project Complexity – Easternhaul Project
– 19 process skids and 500 pipe spools
– More than 70 site hydrotests
– >3300 diameter inch of field welds
– 96 tie-in’s to existing plant over 13 shuts
– > 400 new instruments, 13.5km of new cabling
34 Systems & 105 Sub-systems Commissioned
Above: Brownfield Skid Tie-in
Lower: RBP Flow Reversal Model
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Summary
After 40 years Wallumbilla remains significant to the east coast gas market
– The Wallumbilla Hub has undergone rapid expansion over the past 5 years
Pipeline Hubs provide a range of mid stream services
– Compression Services, Quality Management, Storage & Processing
Hubs assist extract greater value from existing assets
– Easier access between gas market participants
The Wallumbilla Hub range of services continues to diversify
– Gas sources, LNG projects, international oil prices & the changing domestic market
The east coast pipeline system continues to become more interlinked
– Hub facilities assist realize maximum synergies between assets
visit APA’s website www.apa.com.au
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