Entry: air core
URI: https://data.geoscience.earth/ncl/DrillingMethod/airCore
Air core drilling and related methods use hardened steel or tungsten blades to bore a hole into unconsolidated ground. The drill bit has three blades arranged around the bit head, which cut the unconsolidated ground. The rods are hollow and contain an inner tube which sits inside the hollow outer rod barrel. The drill cuttings are removed by injection of compressed air into the hole via the annular area between the innertube and the drill rod. The cuttings are then blown back to surface up the inner tube where they pass through the sample separating system and are collected if needed. Drilling continues with the addition of rods to the top of the drill string. Air core drilling can occasionally produce small chunks of cored rock.
Core metadata
| is a | Concept |
| submitted by | Abdel FELIACHI |
| accepted on | 23 Jan 2019 10:20:30.844 |
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All metadata properties
| date accepted |
23 Jan 2019 10:20:30.844
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| date submitted |
23 Jan 2019 10:20:10.694
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| definition |
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| item class |
Concept
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| label |
air core
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| notation |
airCore
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| register |
drilling method
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| status |
status experimental
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| submitter |
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| type |
register item
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| version info |
2
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Definition
| definition |
Air core drilling and related methods use hardened steel or tungsten blades to bore a hole into unconsolidated ground. The drill bit has three blades arranged around the bit head, which cut the unconsolidated ground. The rods are hollow and contain an inner tube which sits inside the hollow outer rod barrel. The drill cuttings are removed by injection of compressed air into the hole via the annular area between the innertube and the drill rod. The cuttings are then blown back to surface up the inner tube where they pass through the sample separating system and are collected if needed. Drilling continues with the addition of rods to the top of the drill string. Air core drilling can occasionally produce small chunks of cored rock.
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| notation |
6
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| pref label |
air core
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| source |
air core drilling
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| top concept of |
Borehole Drilling Method
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| type |
Concept
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