| Type: | Core Drill |
|---|---|
| Usage: | Coring |
| Certification: | CE, ISO |
| Application: | Reaming |
| Industry: | Geological Survey |
| Payment Term: | Tt or LC |
| Samples: |
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| Customization: |
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Audited Supplier A diamond reaming shell is necessary in core drilling for several reasons:
Borehole Enlargement: Core drilling involves extracting cylindrical samples (cores) from the subsurface. To obtain larger-diameter core samples or to accommodate other drilling tools, the borehole diameter needs to be enlarged. The diamond reaming shell is capable of precisely and efficiently enlarging the borehole diameter to the desired size, allowing for the successful retrieval of larger diameter core samples.
Core Barrel Alignment: Core barrels are used in core drilling to collect and retrieve core samples. The diamond reaming shell is often placed above the core barrel to provide alignment and stability during the drilling process. It helps guide the core barrel, preventing it from deviating or getting stuck in the borehole, ensuring accurate and centered core recovery.
Smoother Borehole Walls: The diamond reaming shell contributes to smoothing and polishing the borehole walls during core drilling. As the diamonds on the shell interact with the formation, they help remove any irregularities, rough surfaces, or drilling-induced damage. This results in smoother borehole walls, which are beneficial for core recovery and maintaining the integrity of the core sample.
Debris Removal and Fluid Circulation: During core drilling, the diamond reaming shell assists in the removal of cuttings and debris from the borehole. The cutting action of the diamonds grinds and shears the formation, generating rock chips and fragments. The drilling fluid or mud, circulated through the drill string and the reaming shell, carries away these cuttings, preventing them from obstructing the drilling process or hindering core recovery.
Core Sample Preservation: The diamond reaming shell helps protect the integrity of the core sample during core drilling. By smoothing the borehole walls, it reduces the risk of core damage during retrieval. Additionally, the removal of debris and cuttings by the reaming shell minimizes the chances of contamination or loss of the core sample, ensuring a high-quality and representative core for geological analysis.
Efficiency and Productivity: The use of a diamond reaming shell in core drilling enhances drilling efficiency and productivity. It allows for faster drilling progress by enabling the deployment of larger-sized core barrels, reducing the number of drilling runs required to achieve the desired core diameter. The efficient enlargement of the borehole diameter with the diamond reaming shell improves drilling performance and optimizes core drilling operations.
In summary, the diamond reaming shell is necessary in core drilling to facilitate borehole enlargement, ensure core barrel alignment, smooth borehole walls, remove debris, and preserve the integrity of the core sample. Its use enhances drilling efficiency, productivity, and the quality of core samples retrieved for geological analysis and mineral exploration.
Model or type:
Specifications
| ITEM | DIAMOND BIT | Reaming shell | |||||
| "Q" Series Wireline assembly |
Size | Bit Outer Diameter | Bit Inner Diameter | ||||
| mm | inch | mm | inch | mm | inch | ||
| AQ | 47.60 | 1.88 | 26.97 | 1.06 | 48.00 | 1.89 | |
| BQ | 59.50 | 2.35 | 36.40 | 1.43 | 59.90 | 2.36 | |
| NQ | 75.30 | 2.97 | 47.60 | 1.88 | 75.70 | 2.98 | |
| HQ | 95.58 | 3.77 | 63.50 | 2.50 | 96.00 | 3.78 | |
| PQ | 122.00 | 4.80 | 84.96 | 3.35 | 122.60 | 4.83 | |
| Metric T2 Series | 36 | 36.0 | 1.417 | 22.0 | 0.866 | 36.3 | 1.429 |
| 46 | 46.0 | 1.811 | 32.0 | 1.260 | 46.3 | 1.823 | |
| 56 | 56.0 | 2.205 | 42.0 | 1.654 | 56.3 | 2.217 | |
| 66 | 66.0 | 2.598 | 52.0 | 2.047 | 66.3 | 2.610 | |
| 76 | 76.0 | 2.992 | 62.0 | 2.441 | 76.3 | 3.004 | |
| 86 | 86.0 | 3.386 | 72.0 | 2.835 | 86.3 | 3.398 | |
| 101 | 101.0 | 3.976 | 84.0 | 3.307 | 101.3 | 3.988 | |
T Series |
TAW | 47.6 | 1.875 | 23.2 | 1.31 | 48.0 | 1.89 |
| TBW | 59.5 | 2.345 | 44.9 | 1.77 | 59.9 | 2.36 | |
| TNW | 75.3 | 2.965 | 60.5 | 2.38 | 75.7 | 2.98 |
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| Reaming classification | |
| T series | T36,T46,T56,T66,T76,T86 |
| Cable series | AWL,BWL,NWL,HWL,PWL(Front end,rear end) |
| WT series | RWT,EWT,AWT,BWT,NWT,HWT(single tube/double tube) |
| T2/T series | T256,T266,T276,T286,T2101,T676,T686,T6101,T6116,T6131,T6146,T6H |
| WF series | HWF,PWF,SWF,UWF,ZWF |
| WG series | EWG,AWG,BWG,NWG,HWG(single tube/double tube |
| WM series | EWM,AWM,BWM,NWM |
| Others | NMLC,HMLC,LTK48,LTK60,TBW,TNW,ATW,BTW,NTW,AQTK NXD3,NXC,T6H,SK6L146,TT46,TB56,TS116,CHD101 |
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