Cang Zhou Creator Drill Equipment Scinence And Technology Co.,LTD
JianShi (China) Drilling Tools Co., Ltd.
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139.7mm single roller core bits for drilling
This series of bits suitable for slim hole drilling operations such as sidetracking and reentry operations
The size range of YC series bir is 3 1/2-6 1/2inch and its IADC code is 437-637
Main structure features:
.with particular structure of the cone,equal worn of the compacts in permanent contact area and alternative contact area of the bit is realized
.wear resistance of the cutting structure is enhanced by setting PDC cutters in the permanent contact area of the cone where compacts are most severely worm
.optimized hydraulics structure improved the cleaning anility of hydraulic system on cone and bottom hole,and assure higher ROP.
.the bit has excellent gage protection and up reaming abilities by setting active cutting conical spherical gage compacts on head body.
| Bit size | Bit type | |
| Inch | mm | |
| 3 3/4 | 95.3 | YC537 YC617 |
| 4 1/8 | 104.8 | YC517 YC527 YC537 YC617 |
| 4 1/2 | 114.3 | YC517 YC527 YC537 |
| 4 5/8 | 117.5 | YC427 YC437 YC517 YC527 YC537 |
| 4 3/4 | 120.7 | YC437 YC517 YC537 |
| 5 1/2 | 139.7 | YC517 YC537 YC617 YC637 |
| 5 7/8 | 149.2 | YC517 YC537 YC617 YC637 |
| 6 | 152.4 | YC517 YC537 YC617 YC637 |
| 6 1/8 | 155.6 | YC517 YC537 YC617 YC637 |
| 6 1/2 | 165.1 | YC517 YC537 YC617 YC637 |
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