| 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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some additional details about diamond reamers:
Reamer application in wellbore enlargement: Diamond reamers are commonly used for wellbore enlargement operations, where they are deployed to increase the diameter of the existing wellbore. This is often done to accommodate larger casing sizes, improve well productivity, or facilitate well intervention operations. Reamers are designed to remove material from the wellbore wall while maintaining hole integrity and stability.
Reamer deployment methods: Diamond reamers can be deployed in various ways, depending on the specific drilling operation and wellbore conditions. One common method is to run the reamer as part of the bottom-hole assembly, where it is placed above the drill bit and rotates with the drilling assembly. Another method is to use a dedicated reamer run, where the reamer is run separately from the drilling assembly, allowing for more flexibility in reaming operations.
Reamer selection criteria: When selecting a diamond reamer, several factors are considered, including the formation type, wellbore conditions, drilling objectives, and desired wellbore diameter. The selection process involves assessing the rock hardness, abrasiveness, and presence of any specific drilling challenges, such as drilling through interbedded formations or encountering unstable zones. This information helps determine the appropriate reamer design, cutter type, and other specifications.
Reamer optimization for specific formations: Diamond reamers can be optimized for specific formation types to maximize their performance. For example, in hard formations, reamers with high-density diamond cutters or enhanced wear-resistant coatings may be used. In abrasive formations, reamers with specialized cutter geometries or self-sharpening features can help maintain cutting efficiency. These optimizations ensure effective drilling and reaming in different formation conditions.
Reamer maintenance and refurbishment techniques: Proper maintenance and refurbishment are essential for prolonging the life of diamond reamers. Regular maintenance involves cleaning the reamer, inspecting for wear or damage, and replacing worn or damaged components. Refurbishment techniques may include reapplying protective coatings, replacing cutters, or repairing any structural damage. These maintenance practices help optimize reamer performance and ensure reliable operation.
Reamer advancements in cutter technology: Ongoing advancements in cutter technology contribute to the improved performance and longevity of diamond reamers. Manufacturers are continually developing new cutter materials, coatings, and cutting structures to enhance cutter durability, cutting efficiency, and resistance to wear and abrasion. These advancements result in increased drilling speed, reduced downtime, and improved overall drilling economics.
Reamer monitoring and data analytics: Real-time monitoring and data analytics play a significant role in optimizing reamer performance. Sensors integrated into the reamer can collect data on parameters such as temperature, pressure, torque, and vibration. This data is analyzed to assess the condition of the reamer, identify potential issues or anomalies, and optimize drilling parameters for improved efficiency and tool reliability.
Reamer advancements for extended reach drilling: Extended reach drilling (ERD) involves drilling horizontally or at high inclinations over long distances. Diamond reamers are crucial in ERD operations, as they help maintain wellbore stability, control hole size, and facilitate casing installation. Advanced reamer designs and stability-enhancing features are developed to address the unique challenges of ERD, such as maintaining accurate wellbore trajectory and preventing wellbore collapse or washout.
Diamond reamers continue to be an important tool in the drilling industry, offering versatility, durability, and efficiency in wellbore enlargement operations. Ongoing research, technological advancements, and industry collaborations contribute to the development of innovative reamer designs and optimized drilling practices, ensuring improved drilling performance and cost-effectiveness.
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. Why is directional reaming important for complex well architectures?
A1. Accurately placing long, intersecting laterals within tight tolerance is critical for optimal well performance and productivity. Directional reaming enables precise wellbore positioning.
Q2. What challenges arise when reaming depleted, fragile formations?
A2. Managing pressure perturbations to avoid losses or further weakening integrity requires specialized BHAs, controlled hydraulics, and caution not to cause additional damage to compromised reservoirs.
Q3. How does complex lithology impact reaming considerations?
A3. Rapid changes in rock properties along the borehole dictate careful mud design, WOB adjustments, tighter cleaning maintenance to prevent issues like stuck pipe or irregular hole quality.
Q4. Why is surge and swab pressure control beneficial during reaming?
A4. Inducing intermittent pressure fluctuations enhances circulation to more efficiently flush cuttings through tight annuli or voids where flow alone proves insufficient for cleaning effectiveness.
Q5. What challenges arise when re-entering old, deviated wellbores?
A5. Deteriorated holes require precise steering to re-intersect original path years later within strict tolerances using LWD imaging and MWD in addition to reamer-conveyed measurements.
Q6. How does managed pressure reaming benefit high-pressure reservoirs?
A6. Minimizing pressure fluctuations prevents losses/kicks while maintaining optimal hydraulics without swabbing or needing heavier muds that could damage formations under extremes.
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