| 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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Here are some additional details about diamond reamers:
Reamer hydraulics: The hydraulic design of diamond reamers is crucial for efficient drilling and debris removal. The reamer is designed to optimize fluid flow, ensuring effective cooling of the cutters and efficient removal of drilling cuttings from the wellbore. Well-designed hydraulic features help prevent clogging, reduce friction, and enhance overall drilling performance.
Reamer stabilization and hole quality: Diamond reamers contribute to stabilizing the wellbore and improving hole quality. By enlarging the wellbore diameter to the desired size, reamers help create a more stable and consistent wellbore, reducing the risk of hole collapse or formation damage. This is especially important in formations with varying hardness, unstable shales, or weak formations.
Reamer deployment challenges: Deploying diamond reamers can present challenges in certain drilling scenarios. For example, in deviated or horizontal wells, the reamer may encounter torque and drag issues due to the tool's contact with the wellbore wall. Specialized deployment techniques, such as using rotary steerable systems or adjustable reamers, are employed to mitigate these challenges and achieve efficient reaming operations.
Reamer compatibility with other drilling tools: Diamond reamers need to be compatible with other drilling tools and equipment used in the drilling assembly. This includes compatibility with drill bits, downhole motors, drilling jars, and other bottom-hole assembly components. Ensuring proper compatibility and integration of the reamer with the rest of the drilling system is essential for smooth and efficient drilling operations.
Reamer size control and accuracy: Diamond reamers are designed to achieve precise wellbore enlargement within specified tolerances. The reamer's cutting structure, design features, and control mechanisms help ensure accurate hole sizing, preventing over-reaming or under-reaming. This level of size control is crucial for successful casing installation, well completion, and subsequent production operations.
Reamer advancements for unconventional drilling: Diamond reamers play a vital role in unconventional drilling techniques such as hydraulic fracturing (fracking) and directional drilling. In these operations, reamers are used to create wellbores with specific profiles, including multi-lateral or radial wellbores. Advanced reamer designs and technologies are developed to meet the unique challenges of unconventional drilling, such as complex well trajectories and optimizing reservoir exposure.
Reamer data integration and automation: Diamond reamers are integrated with drilling data systems to enable real-time monitoring, data analysis, and decision-making. This integration allows drilling engineers and operators to assess reamer performance, analyze drilling parameters, and make adjustments as needed. Automation technologies are also employed to optimize reamer operations, such as automated control systems that adjust reamer settings based on real-time data feedback.
Reamer research for extreme drilling conditions: Research and development efforts are focused on improving diamond reamer performance in extreme drilling conditions. These conditions may include ultra-high-temperature environments, high-pressure formations, or challenging drilling fluids. Advanced materials, coatings, and cutter technologies are being explored to enhance reamer durability, wear resistance, and cutting efficiency in these demanding drilling environments.
Diamond reamers continue to evolve and adapt to meet the growing demands of the drilling industry. Ongoing research, technological advancements, and collaboration between manufacturers, service providers, and drilling operators contribute to the continuous improvement of diamond reamer designs, performance, and overall drilling efficiency.
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 |
Q&A:
Q1. What type of BHA configuration is suitable for reaming?
A1. A heavy-duty assembly with necessary motor/MWD capabilities and sufficient bearing/threaded connections handles abrasive loads and transfers weight. IADC bits optimize hydraulics at high RPMs.
Q2. Why is surveying important for reaming laterals?
A2. Measurements maintain planned inclination/azimuth for productive intervals, confirm laterals stay within defined tolerances, and detect any steering corrections needed for wellbore quality.
Q3. What challenges arise with depleted/compromised formations?
A3. Subsidence risks require pressure control to prevent losses without fracture reactivation that causes further damage. Strength evaluation guides WOB and stabilization needs.
Q4. How do casing cementing operations benefit from reaming?
A4. Clean, stable boreholes provide consistent cement distribution without channeling for zonal isolation. Reaming lays the foundation by preparing an annulus before cement is displaced.
Q5. Why is rate of penetration important when reaming?
A5. Higher ROPs improve efficiency by reducing drilling time spent in the hole. Monitoring ROP also indicates if adjustments are needed to bit parameters or prevent premature damage.
Q6. What factors influence friction and drag during reaming?
A6. Inclination, roughness, mud properties, flow/pressure rates, stabilization, and bit design all affect coefficient of friction. Proper management prevents complications.
Q7. What considerations apply for expandable liner installations?
A7. Smooth, centralized reaming prepares concentric, debris-free paths to facilitate predictable setting of expansion-actuated sand/production control equipment in open holes.
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