Guinness World Records - Officially Amazing

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For the record

  • Who: MAERSK Oil Qatar AS

  • What: Longest drilled oil well

  • Where: Qatar

The worlds longest drilled oil well is BD-04-A, with a total length of 40,320 ft MDRT. It was completed in May 2008 by Maersk Oil Qatar and Qatar Petroleum, in the Al-Shaheen offshore oil field off the coast of Qatar. The well includes a horizontal section measuring 35,770 ft.

MDRT (measured depth below rotary table).


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