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τρύπα

A common term which usually refers to the well bore. Mouse Hole and Rat Hole are shallow bores under the derrick in which the kelly joint and joints of drill pipe are temporarily suspended while making a connection. Rat Hole also refers to a hole of reduced size in the bottom of the regular well bore. Sometimes the driller "rat holes ahead" to facilitate the taking of a drill stem test when it appears that such tests will be desirable.

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  • ml09s5k
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