RE: Humongous sell21 Mar 2023 13:51
ART - the second part of my answer was actually for Stockraiser.
From the photos, they've already installed the Conductor, and given the potential shallow depth at which hydrocarbons could be encountered, I suspect they will likely put a Divertor on (can't shut in at that depth, which is what a BOP does, so use a Divertor to divert any flow away from the Rig so the crew can 'evacuate'...) before the Rig gets there and just drill to TD.
That would tie-in with using a mining rig, which don't run casing or use BOP's / Divertors in the holes that they drill.
If they put in a surface casing, the final hole size would likely be too small for conventional tools, which creates problems further down the line with any potential completion as well. Besides, with seeps being so shallow, where to set the surface casing so it would be of benefit would be problematical.
Given their forecasted cost, they won't be using MWD/LWD tools, but should (emphasis on the should!) be using mud logging.
On a normal Well, you are correct that they would then run W/Line logs to evaluate the formation.
However, here given the shallow depth and that any production is likely through fractures (which is how the fluids are seeping up close to surface), I suspect they may not run any logs at all.
Instead, I think they'll run Open Hole DST's using a dual packer testing assembly - this saves time and money on running & cementing casing and also means that the casing cement job won't mess up any potential production from fractures.
The reason why I think they've gone down the ultra-cheap road is that the forecast well cost has been reduced from the original $660k to $400k at a time when the drilling industry is seeing substantial price rises in manpower, equipment and consumables.
WRT duration, mining rigs are sloooooowwwwww. Yes, a conventional rig should take 7-10 days to reach TD, but I don't think they are going that route.