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Borehole Deepest facts

While investigating facts about Russian Borehole Deepest and Kola Borehole Deepest Hole, I found out little known, but curios details like:

The deepest artificial point on the Earth, the Kola Borehole, has been abandoned since 2006 and only a small metal wield covers the 40,000 ft+ hole.

how deep is the deepest borehole?

The deepest man-made hole in the world is the Kola Superdeep Borehole in northwest Russia. The hole was drilled from 1970 to 1994, reached an ultimate depth of 7.5 miles, and led to the discovery of microscopic plankton fossils 4 miles beneath the surface of the earth.

What is the deepest borehole?

In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across answering what is the deepest borehole in the world. Here are 24 of the best facts about Deepest Borehole In The World and Deepest Borehole Ever Drilled I managed to collect.

what is the deepest borehole ever drilled?

  1. Soviet scientists tried to dig the deepest borehole ever through the Earth’s crust in the 1970’s. The Kola Superdeep Borehole reached 40,318 feet deep before they stopped due to higher-than-expected temperatures of 356 degree Fahrenheit making the project infeasible.

  2. Scientists discovered that there was water deep in the earth where it should not have been. The water that was found in the cracks in the rock kilometers below the earth's surface is believed to have been squeezed out of rock by the pressure and held below by impermeable rock above.

  3. In 2005 the Kola Superdeep Borehole project was permanently abandoned. Money was not available to continue and the drilling rig, research equipment, and other items were sold to a scrap yard.

  4. Scientists were expecting to find a transition at 7km deep of granite to basalt while drilling but did not.

  5. Drilling at such low depths at the Kola Superdeep Borehole meant drilling in extremely high temperatures. The rock density was also more like plastic than rock and it also contributed to the difficulty in drilling and eventually having to stop.

  6. The deepest hole ever drilled was the Kola Superdeep Borehole in Russia. For 20 years they drilled to a depth of over 12000 meters!

  7. In 2008 the Kola Superdeep Borehole was sealed.

  8. The only on-site evidence of the Kola Superdeep Borehole today is the rusty metal cap that sits above the boreholes.

  9. While drilling the Kola Superdeep Borehole a large and unexpected amount of hydrogen gas was discovered. It mixed with mud and appeared to be "boiling" as it flowed from the hole during drilling.

  10. Biological activity has been found to exist in the rock estimated to be 2.5 billion years old. 24 single-cell marine plants have been found in the form of microscopic fossils.

borehole deepest facts
What are the best facts about Borehole Deepest?

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The drilling of the Kola Superdeep Borehole was overshadowed by the race between the world's super powers to reach the moon.

Despite being dismantled and sealed the Kola Superdeep Borehole is considered to be one of the Soviet-era's most important science relics.

Core samples of the Kola Superdeep Borehole can be seen at the repository in Zapolyarny, a town about 10km from the borehole's location.

Although the Kola Superdeep Borehole retains the world record for depth of the hole, there have been other boreholes with longer boreholes including the BD-04A in Qatar, and the Odoptu OP-11 on Sakhalin Island in Russia.

In 1957 the U.S. started a project on the Pacific Ocean similar to the Kola Superdeep Borehole, called "Project Molehole". They abandoned it in 1966 because they could not fund the project to continue.

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The Kola Superdeep Borehole, the deepest hole ever created, at 12,300 meters. It would take you almost a minute to fall to the bottom.

The world deepest hole ever dug is the Kola Superdeep Borehole and it is 12,262-metre-deep (7,619 miles).

The Kola Borehole is the deepest hole in the world. It would take nearly 5 minutes to free fall to the bottom.

Russian's tried to dig the world's deepest borehole to see how far they could get.

The deepest artificial point on earth is the Kola Superdeep Borehole located in Murmansk Oblast, Russia with a depth of 12,000 meters (40,000 ft).

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The Kola Superdeep Borehole is the deepest in the Earth mankind has ever reached and is deeper than the Mariana Trench by 1,228 meters

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