FIELD: oil and gas production.
SUBSTANCE: bore bit consists of case with washing channels and of locking body with blades; locking body is installed in cavity by means of vertically fixed pin. The bore bit is equipped with several additional channels with back valves; the channels are arranged in symmetry relative to lengthwise axis of the locking body; also the bore bit is made with at least two washing channels arranged symmetrically relative to lengthwise axis of the case.
EFFECT: increased efficiency of bore bit operation due to elimination of waste of time for cleaning drilling column from intruded bottomhole slime.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| BORING BIT FOR WELLS IN HIGH GAS CONTENT RESERVOIR (VERSIONS) | 2008 |
|
RU2376440C1 |
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|
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|
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| DRILLING BIT OF WELLS IN GAS-BEARING FORMATIONS | 2011 |
|
RU2479707C1 |
| BIT FOR DRILLING OF WELLS IN HIGHLY GAS BEARING BEDS | 2012 |
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RU2481460C1 |
| PROJECTILE FOR WELL DRILLING IN HIGHLY GASEOUS SEAMS | 2015 |
|
RU2578216C1 |
| BORE BIT FOR DRILLING OF WELLS IN HIGH-GAS-BEARING BEDS | 2014 |
|
RU2568196C1 |
| DRILL COLUMN FOR DRILLING OF WELLS IN HIGHLY GAS-BEARING BEDS | 2012 |
|
RU2491408C1 |
