Product name: 89mm MRING Overburden Symmetric Concentric Casing Drilling System Bit For Rock Formation
Product category: MRING Overburden Casing Drilling System Bit
MRING-XD integral symmetric casing drilling bit Integral MRING overburden drilling systems are designed to use ring bit which is integrated to casing shoe.This ring bit set is retrieved for multi use.
We have taken structural optimization to the next level, resulting in a drill bit that guarantees improved structural strength. This optimization not only increases the longevity of the bit, but also enhances its ease of operation. No more struggling with difficult drilling tasks – our Hole Opener Drill Bit is designed to make your drilling experience a breeze.
MRING-XD symmetric casing drilling bit technical parameters:
| Model | External Dia.(mm) | Casing Dia.(OD*ID) | Spline |
| MK-MRING90 | 125 | 114*102 | MACH33, DHD3.5 |
| MK-MRING115 | 155 | 139*127 | DHD340, SD4, QL4 |
| MK-MRING140 | 188 | 168*153 | DHD350, SD5, QL5 |
| MK-MRING165 | 215 | 194*181 | DHD360, SD6, QL6 |
| MK-MRING190 | 238 | 219*206 | DHD360, SD6, QL6 |
| MK-MRING215 | 276 | 254*240 | DHD380, SD8, QL8 |
| MK-MRING235 | 293 | 273*254 | DHD380, SD8, QL8 |
| MK-MRING240 | 293 | 273*260 | DHD380, SD8, QL8 |
| MK-MRING280 | 345 | 323*303 | SD10 |
| MK-MRING315 | 375 | 355*335 | SD10 |
| MK-MRING365 | 432 | 406*387 | N120, N125, SD12 |
| MK-MRING460 | 530 | 508*483 | N125, N180 |
| MK-MRING510 | 580 | 559*533 | N180 |
| MK-MRING560 | 635 | 610*584 | N180 |
| MK-MRING610 | 695 | 660*632 | N240 |
| MK-MRING660 | 735 | 711*685 | N240 |
| MK-MRING710 | 785 | 762*736 | N240 |
| MK-MRING745 | 838 | 813*780 | N240 |
| MK-MRING810 | 886 | 864*838 | N240, N240S |
| MK-MRING860 | 935 | 914*884 | N240S |
| MK-MRING910 | 980 | 965*935 | N240S |
| MK-MRING960 | 1038 | 1016*986 | N240S, M330 |
| MK-MRING1010 | 1090 | 1067*1041 | M330 |
How to order:
Casing Tube OD & ID + Ring Bit Diameter + Hammer Shank + Maximal Normal Bit Diameter +
Casings and Casing Shoes Installation Method (if by threads, threads standard must be offered)
Other size of MRS system is available upon customer's request
FAQ:
1. How about the common packing?
A: If there is no special packing demand, we will take it as our normal packing. First in small carton, and then put in the bigger carton together to make sure goods completed.
2. Do you have different type for different kind of rock formation?
Yes, according hardness of stone and stone's feature, we have different type respectively.
3. Can you make the goods according to our drawings or samples
Yes, we have the professional molding department, our technician R&D teams are have rich experience.
4. What is an overburden well?
In general, overburden wells consist of sands and gravels, and they can also be built into the geological materials above bedrock. The majority of water wells have a well screen that allows groundwater to enter the well while excluding debris like sand.
5. What is the purpose of surface casing?
Surface casing is set to provide blowout protection, isolate water sands, and prevent lost circulation. It also often provides adequate shoe strength to drill into high-pressure transition zones
6. How far can you directional bore?
What are the minimum and maximum lengths of crossing? Maximum lengths and hole diameters are determined by project specific geotechnical conditions however effective outside range for heavy rig horizontal directional drilling is 3,000 m
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