Entity: direct push
URI: https://data.geoscience.earth/ncl/DrillingMethod/directPush
Type: Concept
no description supplied
experimental
| broader |
core drilling
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| definition |
Direct push technology includes several types of drilling rigs and drilling equipment which advances a drill string by pushing or hammering without rotating the drill string. Direct push rigs include both cone penetration testing rigs and direct push sampling rigs such as a PowerProbe or Geoprobe. Direct push rigs typically are limited to drilling in unconsolidated soil materials and very soft rock. Direct push drilling rigs use hydraulic cylinders and a hydraulic hammer in advancing a hollow core sampler, typically no longer than 2 metres, to gather soil and groundwater samples. The core pipe has a valve on top that is used to create a vacuum at the top of the core when pulling the core out of the sediment. The method can be used in up to 5m of water.
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| narrower |
mackereth core
| gravity core
| window sampler
| delft sampler
| geoprobe core
| kasten core
| piston core
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| notation |
4.2
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| pref label |
direct push
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| source |
direct push rigs
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| type |
Concept
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| date accepted |
23 janv. 2019 11:20:30.862
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| date submitted |
23 janv. 2019 11:20:10.729
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| definition |
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| item class |
Concept
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| label |
direct push
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| modified |
26 févr. 2019 16:35:17.886
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| notation |
directPush
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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 |
5
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