Discover and read the best of Twitter Threads about #GeothermalDecade
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1/Alright this is an experiment, probably my most obscure thread to date, but I want to talk about one of the step-change tech breakthroughs being applied to geothermal that is transforming the sector: the polycrystalline diamond cutter (PDC) drill bit. THREAD:
2/First, a little overview of the drilling process, which is similar whether you are targeting oil, gas, geothermal, minerals, water, etc. It mostly involves breaking rock down with a drill bit and removing the pieces by circulating them up from the bottom. 
3/A predominant early method of drilling basically involved dropping something hard into the ground over and over again to make a hole, called “percussion drilling”. You can see this technique in action many times in There Will Be Blood.
