| Customization: | Available |
|---|---|
| Type: | Core Drill |
| Usage: | Coring |
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Here are some additional points about diamond reamers:
Types of diamond reamers: Diamond reamers come in various types based on their design and application. Some common types include surface-set diamond reamers, impregnated diamond reamers, and polycrystalline diamond compact (PDC) reamers. Surface-set diamond reamers feature natural diamonds set on the surface of the reamer, while impregnated diamond reamers have synthetic diamonds dispersed throughout the matrix. PDC reamers utilize a compact of synthetic diamond grit bonded to a tungsten carbide substrate.
Formation compatibility: Diamond reamers are well-suited for drilling through a wide range of formations. They can effectively handle soft formations, such as clay and shale, as well as hard formations, including limestone, sandstone, and granite. Diamond reamers are particularly advantageous in abrasive formations where conventional reamers may experience excessive wear or poor performance.
Downhole dynamics: The performance of diamond reamers is influenced by downhole dynamics, including weight on bit (WOB), rotary speed, drilling fluid properties, and the interaction between the reamer and formation. Optimization of these parameters is crucial to maximize drilling efficiency and tool longevity. Adjusting WOB and rotary speed based on formation characteristics can help achieve the optimal balance between cutting efficiency and tool wear.
Cooling and lubrication: Diamond reamers require effective cooling and lubrication to manage heat generated during the drilling process. Drilling fluids, such as water-based mud or oil-based mud, are commonly used to provide cooling and lubrication to the reamer and cutters. Proper maintenance of drilling fluid properties, including viscosity, pH balance, and solids control, is essential to ensure adequate cooling and lubrication.
Integrated systems: Diamond reamers can be utilized as part of integrated drilling systems, particularly in situations where multiple drilling challenges need to be addressed simultaneously. For example, reamers can be combined with other downhole tools, such as stabilizers, hole openers, or drill bits, to optimize drilling performance, maintain wellbore stability, and achieve desired borehole size.
Advanced technologies: Ongoing advancements in diamond reamer technology continue to improve their performance and extend their capabilities. These advancements include the development of advanced diamond coatings, improved cutter geometries, and enhanced cutter materials. These technologies aim to enhance cutting efficiency, increase tool durability, and reduce the overall cost of drilling operations.
Environmental considerations: Diamond reamers offer environmental advantages compared to other drilling methods. Their efficient cutting action can reduce the energy required for drilling, resulting in lower carbon emissions. Additionally, the durability and longer lifespan of diamond reamers contribute to reduced waste generation and lower environmental impact.
As with any drilling tool, proper training, maintenance, and adherence to safety protocols are essential when using diamond reamers. Consulting with industry professionals and manufacturers can provide specific guidance and recommendations based on the unique drilling conditions and objectives.
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 |
|
| 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 |
Q&A:
Q1: How do shales impact reaming operations compared to competent rock?
A1: Low strength, swellability necessitate chemical inhibition, controlled fluid pressures avoiding induced fracturing weakening integrity long term. Drag/vibration requires stabilization for smoother reaming at lower WOBs than hard rocks.
Q2: Why is directional survey critical for extended reach S-curves?
A2: Tight radii curvature builds require downhole steering maintaining preplanned profile dimensions within tolerance preventing defects weakening Production tubulars later installed precisely following the curved path.
Q3: How do carbonate formations affect reaming compared to clastics?
A3: Cavernous, vuggy heterogeneity, dissolution risks unstable control if muds alter soluble rock. Inhibition, non-weighted fluids minimize erosion inducing washouts unevenly. Stabilization handles irregular hole conditions.
Q4: Why are directional limitations important for reaming design?
A4: Build rates, minimum curve radii constraints by BHA/reamer capabilities influence trajectory planning avoiding downhole sticking/damage if exceeded. Steering accordingly prevents incorrect paths risking well objective.
Q5: How do pressure/temperature extremes impact equipment selection?
A5: HT/HP conditions necessitate resistant alloys, polycrystallines withstand thermal degradation and pressures without failure jeopardizing zonal isolation, personnel safety long term. Engineered systems withstand extremes
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