Demonstration Project (PCD)

To obtain information for the design for a potential commercial facility, LCK has constructed, operated and decommissioned an in-situ gasification (ISG) demonstration plant during 2018/19.  This involved the construction of an above ground plant (and associated service infrastructure) and the establishment of a below ground single ISG gasifier chamber. The demonstration plant successfully produced syngas, proving that the technical and environmental performance of the process could be successfully confirmed at Leigh Creek.  

The information gained from the Demonstration is being used in LCK’s feasibility studies for the commercial phase of the project.

For the Demonstration Project, the ISG configuration consisted of two wells drilled into a deep coal seam over 500m below the surface, one for an inlet well for the addition of air and water, and the other for the outlet well for the extraction of synthesis gas (syngas). A combination of one horizontal well and one vertical well was used for the demonstration plant gasifier to create a direct linked system in which the two wells meet.

Learn more about ISG and its benefits

The inlet and outlet wells were designed to meet international petroleum industry standards for the pressures, temperatures, operational stresses and loads that were expected to occur during operation of the gasifier.

The Demonstration Project is regulated as an exploration activity under the Petroleum and Geothermal Energy Act 2000 and as an exploration activity the syngas produced was unable to be sold for commercial use and was therefore treated on site in a thermal oxidiser as part of the process.


LCK Demonstration Plant


PCD success

  • Successful Demonstration project;
  • PRMS gas reserve 2P 1,153PJ;

Site Monitoring

12 months of site monitoring completed after PCD operations resulted in:

  • No groundwater contamination issues;
  • No air quality issues;
  • No subsurface subsidence;


Safety Stats for the duration of the PCD:

  • Zero fatalities;
  • Lost time injury frequency rate (LTIFR) =  0;
  • Total recordable injury frequency rate (TRIFR) =  0.


Photos: Water sampling and Plant Operators during PCD

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