FIELD: mining.
SUBSTANCE: claimed method comprises the locking of rod with crown bit by mid element and the transfer of lengthwise forces thereto to opposite sides. Said lengthwise forces are created by the expansion of freezing fluid filling the cavities of the drill bit and rod. Thereafter, drill bit and rod are placed in the reinforced sealed vessel to be placed in refrigerator.
EFFECT: higher efficiency of removal.
2 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| REMOVAL OF DRILL BIT FROM ROD | 2015 |
|
RU2568651C1 |
| REMOVAL OF DRILL BIT FROM ROD | 2015 |
|
RU2568649C1 |
| REMOVAL OF DRILL BIT FROM ROD | 2015 |
|
RU2568631C1 |
| CROWN BIT REMOVAL FROM ROD | 2015 |
|
RU2568648C1 |
| METHOD FOR REMOVING DRILLING BIT FROM ROD | 2011 |
|
RU2479710C1 |
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| DIAMOND DRILLING BIT AND PRODUCTION METHOD | 2005 |
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| DRILLING BIT REMOVING DEVICE | 2008 |
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| PROJECTILE FOR WELL DRILLING IN HIGHLY GASEOUS SEAMS | 2015 |
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| DRILLING BIT OF WELLS IN HIGH-GAS-BEARING FORMATIONS | 2011 |
|
RU2479709C1 |
