Complaint
| ROLLER CONE BITS(IADC) | ROLLER CONE(m/h) | FORMATION HARDNESS | FORMATION | ROCK TYPE | COMPRESS STRENGTH | |
| WEM | OBM | |||||
| 111/124 | 15-30 | 18-33 | Very soft | Soft formation with sticky layers and lom compressive strength | Clay,Silts,Sands | <25MPa |
| 116/137/437 | 9-15 | 12-18 | Soft | Soft formation with lom compressive strength and high drillability | Claystone,Marl,Lignite,Sandstone,Tuff | 25-50MPa |
| 136/137/517/527 | 4.5-9 | 6-12 | Medium soft | Soft to medium formation with lom compressive strength interbed with hard layers | Claystone,Marl,Lignite,Sandstone,Silts ,Anhydrites,Tuff | 50-75MPa |
| 211/217/517/537 | 2.5-6 | 3-6 | Medium | Medium to hard formation with high compressivestrength and small abrasive layers | Mudstone Limestone Anhydrite Sandstone(Calcareous) | 75-100MPa |
| 211/236/537/617 | 1.5-2.5 | 1.5-3 | Medium Hard | Hard and dense formation with very high compressivestrength but non abrasive | Limestone,Anhydrite,Dolomite | 100-120MPa |
| 311/347/627/637 | 1-1.5 | 1-1.5 | Hard | Hard and dense formation with very high compressivestrengthand some abrasive layers | Shale(Calcareous),Sandstone(Siliceous) ,Siltstone | 100-200MPa |
| 637/737/837 | 1 | 1 | Very Hard | Extremely hard and abrasive formations | Quartzite,Igneous rocks | >200MPa |
FAQ
Q: Are you original manufacturer?
A: Yes, we JCDRILL is a official leading manufacture in drilling machinery in China and we have the whole series products you need.
Q: Which payment terms are available to us?
A: T/T term or L/C term. On T/T term, 30% down payment is required in advance, and 70% balance shall be settled before shipment.On L/C term, a 100% irrevocable L/C without "soft clauses" can be accepted.
Q: How long will the delivery time take?
A: Normally mud pump products will take about 3-15 days to produce the ordered machines. Most of the time, we can have an immediate delivery of our regular machines in 15 days.
Q: How about after sales service?
A: 365×24 Year-round Service We are committed to year-round 24-hour service even during holidays, in line with our policy of always providing "a response within 15 minutes and job completion within 24 hours."
Q:Spare Parts When You Need Them
A:We have spare parts centers across continents that stock specialist spare parts. We promise that spare parts will be delivered within 72 hours or no more than one week.
