| 21. | It is also possible once a borehole is complete to measure the permeability.
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| 22. | This could result in key seating and pipe digging into the borehole wall.
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| 23. | After drilling, the module will place a time capsule into the borehole.
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| 24. | The Askam Borehole discharges of acid mine drainage per minute into Nanticoke Creek.
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| 25. | Permeable sections of a borehole wall develop a thick layer of mudcake during drilling.
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| 26. | Modern neutron logging tools usually include two detectors to compensate for some borehole effects.
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| 27. | Chinese borehole sites could reach as deep as 600 m ( 2000 ft ).
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| 28. | For many years, the world s deepest borehole was the Kola Superdeep Borehole.
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| 29. | For many years, the world s deepest borehole was the Kola Superdeep Borehole.
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| 30. | The borehole is operated by Severn Trent Water.
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