WellDog and Arrow Energy publish GasSpotter case study
WellDog announced today that it has co-published with one of its key customers, Arrow Energy, a case study describing the results of using its GasSpotterTM service to assess key production factors in Queensland coal seam gas wells under dewatering.
WellDog’s GasSpotter provides data key to optimising CSG field development and production planning. The purpose of the field trials was to assess the relevance of the service, which was proven in hundreds of coal seam gas wells across several basins in North America, to coal seam gas wells in Australia.
The results showed close correlation of gas critical desorption pressure and gas content between WellDog’s downhole results and those measured via laboratory testing of nearby cores. The work was carried out on wells that had already been completed and were undergoing dewatering prior to production. Due to WellDog’s proprietary technology platform, the tests did not disrupt or delay the dewatering process.
WellDog is the only company in the world that possesses the underlying technical capability, which also underpins the company’s successful GasMapper technical service, which helps underground coal miners identify and mitigate gas risks and reduce greenhouse gas emissions, and its SweetSpotter service, which measures concurrently gas and permeability in coal seam gas reservoirs and is scheduled for market introduction in the first quarter of next year.
Arrow Energy, a 50/50 joint venture partnership between Royal Dutch Shell and PetroChina, is one of the largest integrated energy companies in Australia with five gas producing projects in the Surat and Bowen Basins, ownership of a gas-fired power station and interests in two others. Arrow provides approximately 20 per cent of Queensland’s gas supply, most of which is used to generate electricity.
The paper (SPE 167034), entitled “Surface Well Test Of Methane Gas Saturation In CSG Lateral Completions During Dewatering Using Raman Spectroscopy,” was co-authored by Arrow Energy staff members Saikat Mazumder and Michael Scott, and WellDog staff members Quentin Morgan, Peter Ramsay, and John Pope.
Coal seam gas (coalbed methane) activity in eastern Australia continues to increase in order to supply natural gas to liquefied natural gas export terminals under construction in Queensland. As activity shifts from exploration to development and production, production optimisation tools such as the GasSpotter are becoming increasingly important.
