RE: Schlumberger unveils stand-alone directional drilling system
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Hello friend, I don't know if when you say drill you mean the drill bit or the drill rig, as I don't know which is the case, I will answer you in both cases.
What are the sizes of the drills that are used?
That is going to depend on the holes to be drilled, for example if you are going to drill the conductor hole, the drill bit size should be 17.5 inches in diameter, now if you are drilling for example the intermediate hole you should use a 12.5 inch drill bit, and for the production hole you should drill with an 8 inch drill bit.
In the case that your question refers to the size of the drilling rigs, it will depend on the depth of the well to be drilled, for example if you are going to drill a well of 18000 feet deep you would use a drilling rig of 3000 horsepower (HP).
Truth is, you answered several of my curiosities all at once by giving those specifics... mind blown. Thank you! 😊