Santos Limited · ASX:STO

Santos — Corporate Update (May 2014)

12 slides from Santos's corporate update, May 14, 2014

  1. Slide 1: Narrabri Gas Project – Produced Water Management Plan

    Narrabri Gas Project – Produced Water Management Plan Narrabri CCC 14 May 2014

  2. Slide 2: Produced Water Management Plan (PWMP)

    Produced Water Ensuring management processes for produced water Management Plan are in place (PWMP) PWMP requirement under condition 14 of PEL238 1. Expected sources and estimated quantities of produced water 2. Proposed containment measures 3. Proposed treatment measures 4. Proposed beneficial reus

  3. Slide 3: Appraisal water infrastructure

    Appraisal water infrastructure • This PWMP applies to the management of produced water produced during the exploration and appraisal activities. • Santos will complete an evaluation of treatment and management options for produced water associated with the Narrabri Gas Project during EIS. • PWMP wil

  4. Slide 4: Produced water forecast

    Produced water forecast Stages of produced water and coal seam gas production 4 | SANTOS 2014

  5. Slide 5: Exploration and appraisal program: estimated produced water volume

    Exploration and appraisal Estimated produced water volume program Total Extraction over Maximum Average Pilot operation of pilot – based on Extraction Extraction average extraction rates (ML) (ML/day) (ML/day) Dewhurst 13-18 331.1 0.40 0.30 Dewhurst 22-25 285.1 0.27 0.26 Dewhurst 26-31 413.8 0.45 0.

  6. Slide 6: Exploration and appraisal program: managing water from previous operations

    Exploration and appraisal Managing water from previous operations program Water quality field measurements Volume (ML) (January 2014) Storage name (3 February 2014) Total Dissolved pH Temperature (C) Solids (mg/L) Bibblewindi Water 96 9.35 36.6 33,020 Transfer Facility (Pond 3) Tintsfield Ponds 47 9

  7. Slide 7: Produced Water: average water quality concentrations across Narrabri Gas Development

    Produced Water Average water quality concentrations across Narrabri Gas Development Produced Water Produced Water Parameter Units Parameter Units Average concentration Average concentration Total Dissolved Solids (TDS) mg/L 12,000 – 16,000 Manganese (Total) mg/L 0.009 Temperature °C 15 - 30 Aluminiu

  8. Slide 8: Diagrammatic overview of produced water infrastructure

    Diagrammatic overview of produced water infrastructure 8 |

  9. Slide 9: Proposed containment and treatment processes

    Proposed containment Desalination and Amendment of water for beneficial and treatment processes uses pH pH Control Control and and Oxidise Oxidise Evaporation Evaporation Rainfall Rainfall Brine Brine Brine Containment Desalination Desalination Unit Unit IX Pond Coal seam Feed Buffer Tank Pre-treatm

  10. Slide 10: Proposed beneficial re-use of treated water

    Proposed beneficial re-use Providing a ‘new source’ of water for beneficial re-use of treated water Following treatment, produced water may be directed to beneficial uses that could include: • Dust suppression, use in construction and drilling and firefighting; • Irrigation; and/or • Discharge to su

  11. Slide 11: Containment controls and record keeping

    Containment controls and Ensuring good quality control and assurance processes record keeping Key records associated with this PWMP that will be stored and managed will include: • Inspection and monitoring records for facilities and dams; • Operational monitoring and performance data for treatment s

  12. Slide 12: End.

    End. Santos 12 | SANTOS 2014 We have the energy.

Santos — Corporate Update (May 2014) on 6ix