@seasong7655
Love how this channel keeps drilling deep into interesting topics.
@UncleWermus
Always a good day when New Mind uploads
@abdulhalim6596
The most critical and problem in deep drilling is BLOW OUT, the bottom hole overpressure that is exerted due to the massive overburden. This pressure can be prevented from blow out by running drilling fluid system which is made from mud + weighting agent. To keep the mud weight in consistent with the bore hole pressure so that blow out won't happen is the most important part of deep drilling. The weight of the mud must be havier as drill hole goes deeper. And the mud must be thick enough to hold the weighting agent floats in the drilling fluid. This requires a good stable (heat proof) viscosifier material (polymer) that can withstand high temperature at the bottom hole. When facing an HTHP ('high pressure high temperature) of the down hole we experienced a big problem to keep the drilling fluid in stable condition. Apparently we expected a BLOW OUT will occur when the viscosifier becomes degraded (loss its viscosity) by high temperature heating and the thinning of the mud will no longer able to hold the weighting agent afloat and further a sudden drop of mud weight will happen. Next when the mud no longer hold the bottom hole pressure, a massive blow out can't be avoided.
I wonder what type of polymer is used that can withstand above boiling point temperature condition in 9km drilling those days, even today we haven't had yet.
From Ex Drilling fluid engineer. Malaysia
@alericwil
Great unique presentation on a popular topic. I learned stuff that I'd never heard from loads of other channels. Nice work
@shaneej3095
I worked on a drilling rig for most of my life and must say you did a good job explaining the process. Keep up the good work.
@levanthasis
Thank You! Because this video was the first information bit I collided in trying to find from the net - almost in vain - information about working principle(s) of these Deep Earth's Crust DRILLS & BITS and HOW THEY ACTUALLY WORK IN PRACTICE. This video explained things, at least partly. So, THANK YOU once more for posting this very interesting video!
@GediMini
One of the most interesting videos about rocks that I've seen today. great job!
@fridaycaliforniaa236
As a KSP player, I eventually understand what the "Mohole" name came from
@aion2177
What worries me is we infer all this info from only 1 hole. We should make 500 holes just as deep or deeper in other parts of the world to be sure we dont draw conclusions too quickly. Thanks for the video.
@bharathch8304
I need confirmation that I'm not hearing things.. 7:43 Use headphones?
@TheAhmet15
I love your videos. You pack so much information into a short period of time and make things so clear. Keep up the great content!
@nerobernardino88
This content sure isn't boring!
@eSKAone-
1:26 This is a mirrored image (look at Italy)
@kairon156
very cool video. I've heard of a few attempts to dig deep but this is the first through overview I've seen on the different digging events.
@awerellwv
1:23 - 1:29 the image is flipped left to right
@gargert1433
amazing video, loved the whole thing
@mortkebab2849
Geology totally rocks!
@waynep343
Drilled into magma chamber in hawaii already. Nothing happened for years till a fissure erupted and almost deep sixed a large corner of the island. Drilling toward magma in the south east corner of the salton sea. And in central cal called the geysers.
@altimmons
The Perot nature museum in Dallas tx was 4 floors and one of the 4 floors was entirely devoted to drilling. On one hand I thought it was inappropriate. On the other, it was also fascinating, because you don’t often see how drilling is done. I think the museum in Houston had the same thing though less prominently. Oil was big in Texas as you might expect but it’s surprising to see how far it extends
@landonsmith7629