Ann: Nomgon CBM Project Flows - Gas & Water to Surface, page-40

"A test well is a CSG well used to investigate the potential gas reserves in an area. A testing program involves the drilling of a group of test wells (up to 5) to just below the coal seam. These wells are used to measure the flow of gas and the volume of brine wastewater released from the targeted coal seam.Once drilled a submersible pump is installed to remove brine water from the coal seam. The reduction of water pressure in the coal seam allows gas to release from the coal and flow to the surface. Once a CSG company has perforated a coal seam, this depressurisation is permanent and the gas is able to migrate continually from this point on. A test well generally operates for several months. Once sufficient data on both gas and water production has been collected the testing is complete. The site may remain in place to allow for testing of other coal seams or the well may be removed."

Bringing up water is all apart of the pilot production testing that will be occurring over the next 12 months. Water volume generally decreases as water saturation falls and gas permeability rises.