Recognising the need to transition to a low-carbon economy, Senex is committed to evaluating and implementing operational initiatives that will reduce our emissions in areas such as energy use, water management and waste management.
Senex has recorded its emissions under the National Greenhouse and Energy Reporting Act 2007 (NGER) since 2011. This scheme measures energy produced, energy consumed and greenhouse gas emissions. Since 2013, we have reported to the National Pollution Inventory (NPI) on emissions to air, land and water. The report provides these emissions calculations for FY17, as the FY18 calculations are completed late in the calendar year.
Reduced energy production consumption and greenhouse gas emissions
- 25,699 tonnes of CO2 equivalent in FY17 vs 28,973 tonnes in FY16
Noting the lag in reported data, this result for FY17 is consistent with reduced activity levels, including lower production, flaring and field and facilities development. For FY18, we expect a measured increase in emissions proportionate to additional exploration and production activity across the Cooper Basin and Surat Basin projects.
Increased water production
- 2,222 megalitres of water produced in FY18 vs 2,010 megalitres in FY17
The increase in water production levels can be primarily attributed to new wells coming online, water-cut increases from producing wells in the Cooper Basin and appraisal activities on the Western Surat Gas Project.
Decreased water usage
- 92 megalitres in FY18 (71% of total from Senex water storage ponds) vs 109 megalitres in FY17.
In FY18 Senex successfully achieved a reduction in water use as well as a significant increase in the re-use of water for construction and drilling activity in the Cooper Basin and on the Western Surat Gas Project. Senex continues to supply treated and tested produced water to local graziers in the Cooper Basin, helping them to maintain their livestock watering. In the Surat Basin Senex is prioritising the beneficial reuse of produced water, including for construction, drilling and dust suppression. The opportunity to irrigate adjacent farm land using produced water is being investigated and would further promote the co-existence of gas activities with surrounding agricultural land use.