The Wallumbilla Hub: Integrating Queensland s Pipeline Infrastructure to Meet the Changing Demands of the East Coast Gas Grid

Transcription

1 The Wallumbilla Hub: Integrating Queensland s Pipeline Infrastructure to Meet the Changing Demands of the East Coast Gas Grid Craig Clarke, Manager Construction Engineering APGA Annual Convention, Gold Coast October 2015

2 Outline East Coast Gas Grid Changes in the Market Wallumbilla Development Wallumbilla Hub Services APA Wallumbilla Hub Project Project Challenges 2

3 APA Pipeline Network & East Coast Grid 3

4 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 4

5 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 SEA Markets Berwyndale & Darling Downs Pipelines 2009 Top Wallumbilla Facility Circa 90 s Lower Roma Fields Receipt Piping 5

6 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

7 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 GLNG QGP Origin AGL LPG BWP Santos Wallumbilla Gas Hub August 2015 SWQP 7

8 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 8

9 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) 9

10 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 10

11 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 11

12 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 12

13 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 13

14 APA Wallumbilla Simplified Schematic 14

15 APA Wallumbilla Simplified Schematic 15

16 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 16

17 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 17

18 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 18

19 Delivering Australia s Energy visit APA s website