Request for a Startup: Drilling Tech for Heat Pumps
jacek.migdal.pl
jacek.migdal.pl
Lol way overpriced and definitely not suitable for all ground types.
BQ core drill on a udr1200 is what ya want. HQ Rock roll for the first 20m or til you hit solid, leave the casing in and then slam down that first hundred in NQ then switch to BQ for everything deeper. You'd need probably two trucks just for tailings from the cut. You gotta pump mud down, bring it back up, floc drop the particles out and recycle it back down the hole. Could do it using a series of tanks on some trucks for cleanliness and transportability.
Look in good ground you'll get 100m with a killer crew in a 12 hour shift. In shit ground you'll get 20m. Whatever you do only take rock doctor (geologists) reports with a God damn Boulder of salt. Those Muppets only have the vaguest idea of what to expect down hole. They over exaggerate how much they know about what's under the ground and what effect it will have on drilling. Their whole field it hypothetical when it comes to drilling. They got nfi until after the jobs done.
Source. Worked on a prototype deep hole drill rig and a bunch of udr1200s punching holes in and around Wiluna,WA. Deepest was >1600m.
Quote "Dandelion developed an innovative and proprietary sonic drill suite that’s lighter, cleaner, and can install 14x faster than a conventional well drill."
The thesis in the article goes against some conventional wisdom, but some engineers validated the potential of that approach.
The state of art you mention would already make it quite expensive (e.g. mud causes mess, making it less appealing for retrofits, and two trucks add costs).
A sonic drill rig is exactly like a normal conventional core drill rig it just has the capacity to set a vibration frequency down the rod string. So you can twist and shake rather than just twist.
It still needs mud pumped down hole to remove cuttings. Only reason it wouldn't need mud is if your doing like 10m holes and you raw dog it or your drilling RC (which uses air to blast the cuttings out). Which is waaaaay to loud for operation near town.
It's basically a small drill rig w a vibrator on it. Those sonics are only good for 1000' (I assume that's ft... which is hilariously small, even at yards it's only just scratching 900m which is 300m less than a low end old world UDR1000 can punch day in day out with its eyes closed.)