Xuanhua Jinke Drilling Machinery Co.,Ltd.
Xuanhua Jinke Drilling Machinery Co.,Ltd. Jinke provide users high quality drilling solutions,we always focus on the strategic conception of “Survival by quality, Development by credit’’.
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Cutting Structure
The durability of premium tungsten carbide insert is improved with new formulas and new techniques and new techniques. The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces.
Bearing Structure
Non-sealed roller bearing. Drilling fluid can enter the bearing directly for cooling; Balls lock the cone which reduces the probability of cone dropping to minimum.
Product Application
It is suitable for the shallow well, water well and geothermal well.
Recommended Drilling Parameter
|
IADC |
WOB (KN/mm) |
RPM (r/min) |
Applicable Formations |
|
111 |
0.3~0.75 |
200~80 |
Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, etc. |
|
121 |
0.3~0.85 |
200~80 |
Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt,soft limestone, etc. |
|
131 |
0.3~0.95 |
180~80 |
Soft to medium formations with low compressive strength and high drillability, such as medium soft shale, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbed, etc. |
|
211 |
0.35~0.95 |
180~80 |
Medium formations with high compress strength, such as medium soft shale, hard gypsum , medium soft limestone, medium soft sandstone, soft formation with harder interbed, etc. |
|
241 |
0.35~0.95 |
180~70 |
Medium hard formations with high compressive strength, such as abrasive shale, limestone,sandstone, dolomite, hard gypsum, marble,etc |
|
321 |
0.4~1.0 |
150~70 |
Hard semi-abrasive formations, such as abrasive shale,limestone,sand stone, dolomite,hard gypsum,marble,etc. |
|
Note: The upper limits of WOB and RPM in above table should not be used simultaneously. |
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