On 04-25-17, KEES VAN EETEN said to ROBERT BASHE:

KV>Hello Robert!

KV>25 Apr 17 17:16, you wrote to Michiel van der Vlist:

RB> Don't you mean 2,000 feet? 2,000 meters would be 6,000 feet and that
KV>comes RB> close to some oil well drilling in Texas.

KV>Some Googling told me that the deepest Gold mine in SA is 4kM deep. The
KV>ambient temperature there is 85 deg C. and a lot of ice is pumped down
KV>the mine, to make working possible.

KV>As for depth of drilling for Oil, the first well in the Minas field in
KV>Central Sumatra, where I lived in my youth, produced Oil at a depth
KV>between 650 and 740 meters.

KV>Kees


Back in the early 1970's I worked for a drilling company in Eastern Arizona,
and we were pulling rock cores from deeper than 5000ft.


Sometimes it took a whole shift to pull the rods, change the bit, and return
them into the hole. A shift that produced around thirty feet of core was
considered a pretty good shift.





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*Durango b301 #PE*