RE: Yesterday's Origin presentation21 Feb 2018 16:58
Haven't found the actual presentation yet, but I found an Abstract/preview from the recent Kyalla presentation:
COULD THE MESOPROTEROZOIC KYALLA FORMATION EMERGE AS A VIABLE GAS CONDENSATE SOURCE ROCK RESERVOR PLAY IN THE BEETALOO SUB-BASIN?
Carl Altmann1*, Elizabeth Baruch2, David Close3, Alexander Cote4, Brenton Richards5, Mohinudeen Faiz 6
The Mesoproterozoic Kyalla Formation (Kyalla) in the Beetaloo Sub-Basin has historically yielded consistent high mud gas shows, and exhibited evidence of oil and gas in cores from exploration wells. Despite positive hydrocarbon indicators, the Kyalla is often overlooked as a potential regional unconventional resource play due to the apparent high clay content (50-70 wt%) thought to affect the potential for effective hydraulic fracture stimulation.
Preliminary petrophysical, core and gas analysis from exploration wells drilled by Origin Energy in 2015-16 revealed positive reservoir quality indicators including high total porosity (8-10 %BV), moderate hydrocarbon saturations (40-60% PV), geochemical indicators consistent with an adequate indigenous hydrocarbon source (2-3 wt% TOC, Type I/II Kerogen, VReq 1.3-1.5) and moderate to high qualitative gas condensate potential as indicated by gas chromatographic analysis on mud gas and drill cuttings headspace gas. Furthermore, geomechanical testing on recovered core indicates properties conducive to hydraulic fracture stimulation.
Fourier transform infrared spectroscopy (FTIR) analysis indicates bulk clay content is primarily comprised of mica species, in particular muscovite. The relative abundance of muscovite over other clay types may play a key role in explaining the observed geomechanical properties of the Kyalla despite its overall high bulk clay content.
If the Kyalla is technically viable, it will add an alternative or additional play in a Basin that has the potential to be key to long term supply stability to domestic and export gas markets.