FIELD: hole drilling, particularly, paddle wheels for removing of drillings. SUBSTANCE: paddle wheel has a body and many paddles protruding from the body. One or several paddles have hollow on their from surface in direction of paddle wheel rotation. Radial external surface of one or several paddles (II version) has one or several changeable wearing members. Said members may have nylon inserts installed in holes of paddle radial external surfaces. EFFECT: higher efficiency of removal of drillings by paddle wheel. 14 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DRILL PIPE STRING AND ASSEMBLY ROD REDUCTION OF DRILL PIPE STRING TORQUE | 1994 |
|
RU2123099C1 |
| WELL DRILLING METHOD | 2003 |
|
RU2320840C2 |
| DEVICE FOR CLEANING DIRECTIONAL AND HORIZONTAL WELLBORES FROM SLIME | 2015 |
|
RU2630497C2 |
| METHOD FOR FORCING FLUID SUBSTANCE INTO BOREHOLE INTO ZONE IN FRONT OF DRILLING BIT | 2002 |
|
RU2287662C2 |
| BLADE REAMER | 2007 |
|
RU2345209C1 |
| DRILLING SYSTEMS AND HYBRID DRILL BITS FOR DRILLING IN SUBTERRANEAN FORMATION AND METHODS RELATING THERETO | 2014 |
|
RU2669623C1 |
| DRILLING SYSTEM WITH BARREL EXPANSION UNIT | 2016 |
|
RU2712866C2 |
| DEVICE FOR DRILLING CURVED BORE-HOLE | 1992 |
|
RU2072419C1 |
| DRILLING BITS WITH SUPPORTING ELEMENTS PROVIDING DECREASE OF CUTTING ELEMENTS PROTRUSION | 2006 |
|
RU2421589C2 |
| DIAMOND BLADE DRILL BIT | 2017 |
|
RU2652775C1 |
