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This page displays all 「FI」 in main group E21B25/00. |
HB:Handbook | ||||
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CC:Concordance | |||||
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Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors (core bits E21B 10/02) [2006.01] | HB | CC | 2D129 | |
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.the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe [2006.01] | HB | CC | 2D129 | |
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..the core receiver having a core forming cutting edge or element, e.g. punch type core barrels [3] | HB | CC | 2D129 | |
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.the core receiver having a flexible liner or inflatable retaining means [3] | HB | CC | 2D129 | |
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.Coating, freezing, consolidating cores (E21B 25/06 takes precedence); Recovering uncontaminated cores or cores at formation pressure [3] | HB | CC | 2D129 | |
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.Formed core retaining or severing means (E21B 25/06, E21B 25/08 take precedence) [3] | HB | CC | 2D129 | |
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..of the sliding wedge type [3] | HB | CC | 2D129 | |
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..mounted on pivot transverse to core axis [3] | HB | CC | 2D129 | |
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.for obtaining oriented cores [3] | HB | CC | 2D129 | |
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.the core receiver being specially adapted for operation under water [3] | HB | CC | 2D129 | |