{"organism":"Page","children":[{"organism":"Container.Raw","children":[{"organism":"Metadata","model":{"title":"Groundwater and geology","text":"\u003Cp\u003E\u003Cspan\u003EWhat does the earth look like in the area QGC is active and how do our activities affect the geology.\u003C/span\u003E\u003Cstrong\u003E\u003Cspan\u003E\u003C/span\u003E\u003C/strong\u003E\u003C/p\u003E\r\n\r\n\r\n","links":[{"name":"Groundwater and geology","value":"https://www.shell.com.au/about-us/projects-and-locations/qgc/environment/water-management/groundwater-and-geology.html"}],"image":{"src":"https://www.shell.com.au/about-us/projects-and-locations/qgc/environment/water-management/groundwater-and-geology/_jcr_content/root/metadata.shellimg.jpeg/1699005852869/western-auger-drilling-at-work-for-qgc.jpeg","alt":"Western Auger Drilling at work for QGC in the Western Downs","width":4945,"height":2793}},"id":"/content/shell/countries/australia/en_au/about-us/projects-and-locations/qgc/environment/water-management/groundwater-and-geology/jcr_content/root/metadata"},{"organism":"ContentOwner","model":{},"id":"/content/shell/countries/australia/en_au/about-us/projects-and-locations/qgc/environment/water-management/groundwater-and-geology/jcr_content/root/contentowner"},{"organism":"Container.Header","children":[{"organism":"Container.Raw","ref":"https://www.shell.com.au/_jcr_content/root/header/inherited.model.json","id":"/content/shell/countries/australia/en_au/about-us/projects-and-locations/qgc/environment/water-management/groundwater-and-geology/jcr_content/root/header/inherited","model":{}},{"organism":"Breadcrumb","model":{"links":[{"name":"Home","value":"https://www.shell.com.au/"},{"name":"About Us","value":"https://www.shell.com.au/about-us.html"},{"name":"Projects and Assets","value":"https://www.shell.com.au/about-us/projects-and-locations.html"},{"name":"Shell’s QGC business","value":"https://www.shell.com.au/about-us/projects-and-locations/qgc.html"},{"name":"Environment","value":"https://www.shell.com.au/about-us/projects-and-locations/qgc/environment.html"},{"name":"Water management","value":"https://www.shell.com.au/about-us/projects-and-locations/qgc/environment/water-management.html"},{"name":"Groundwater and geology","value":"https://www.shell.com.au/about-us/projects-and-locations/qgc/environment/water-management/groundwater-and-geology.html"}]},"id":"/content/shell/countries/australia/en_au/about-us/projects-and-locations/qgc/environment/water-management/groundwater-and-geology/jcr_content/root/header/breadcrumb"}],"id":"/content/shell/countries/australia/en_au/about-us/projects-and-locations/qgc/environment/water-management/groundwater-and-geology/jcr_content/root/header","model":{}},{"organism":"Container.Main","children":[{"organism":"Container.Section","children":[{"organism":"PageHeader","color":"inherited","model":{"title":"Groundwater and geology","text":"\u003Cp\u003EWhat does the earth look like in the area QGC is active and how do our activities affect the geology.\u003C/p\u003E\r\n","image":{"src":"https://www.shell.com.au/about-us/projects-and-locations/qgc/environment/water-management/groundwater-and-geology/_jcr_content/root/main/section/page-header.shellimg.jpeg/1699005870701/western-auger-drilling-at-work-for-qgc.jpeg","alt":"Western Auger Drilling at work for QGC in the Western Downs","width":5000,"height":1250}},"id":"/content/shell/countries/australia/en_au/about-us/projects-and-locations/qgc/environment/water-management/groundwater-and-geology/jcr_content/root/main/section/page-header"},{"organism":"PromoSimple.Text","color":"inherited","id":"/content/shell/countries/australia/en_au/about-us/projects-and-locations/qgc/environment/water-management/groundwater-and-geology/jcr_content/root/main/section/text","model":{"text":"\u003Cp\u003EWe produce gas from the Walloon Coal Measures of the Surat Basin.\u003C/p\u003E\r\n\u003Cp\u003EIn our tenements the Walloon Coal Measures are generally 300 to 400 metres thick but only 10% of the formation actually contains coal. Most of the coal seams are about only 30 to 50 centimetres thick and only a few hundred metres long.\u003C/p\u003E\r\n\u003Cp\u003EThere are a few local exceptions, but these coal seams are generally surrounded by rock such as mudstone and siltstone that is almost impervious and helps to contain the gas.\u003C/p\u003E\r\n\u003Cp\u003EThere are a number of aquifers and aquitards above and below the Walloon Coal Measures. The aquifers are typically sandstone formations and have a high porosity and permeability, allowing water movement within the formation.\u003C/p\u003E\r\n\u003Cp\u003EThe aquitards are typically mudstone and siltstone and have a low porosity and permeability. 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