| 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 Here are some more details on using a diamond reamer:
Formation evaluation: Before using a diamond reamer, it's essential to conduct a thorough formation evaluation. Understand the geological characteristics of the formation, such as its composition, hardness, and potential presence of interbedded formations or abrasive zones. This information will help in selecting the appropriate diamond reamer design and cutters for optimal performance.
Reamer configuration: Diamond reamers come in various configurations, including concentric, eccentric, and spiral designs. Concentric reamers are commonly used for general reaming applications, while eccentric and spiral reamers are suitable for specific drilling challenges, such as avoiding borehole collapse or maintaining gauge hole size. Choose the reamer configuration that aligns with your specific drilling objectives.
Gauge hole control: Maintaining the desired gauge hole size is crucial during reaming operations. The gauge hole refers to the diameter of the wellbore. Diamond reamers can be equipped with gauge protection features, such as cutting elements or stabilizers, to ensure accurate gauge hole control. Proper gauge hole management helps prevent hole enlargement, wellbore instability, and potential issues during casing installation.
Reaming in stages: In some applications, reaming the wellbore in stages can be advantageous. This involves using multiple diamond reamers with sequentially increasing diameters to achieve the desired final hole size. Reaming in stages allows for better control over drilling parameters, reduces the risk of excessive torque or vibration, and helps ensure smooth drilling progress.
Cuttings management: Proper management of cuttings generated during reaming is essential. The cuttings should be efficiently transported out of the wellbore to maintain a clean and stable hole. Consider using appropriate drilling fluid systems, such as high-viscosity sweeps or specialized reaming fluids, to aid in the removal and suspension of cuttings. Effective cuttings management helps prevent hole plugging and enhances overall drilling performance.
Mitigating vibration and stick-slip: Vibrations and stick-slip are common challenges encountered during reaming operations. Excessive vibration can lead to tool damage, poor hole quality, and decreased drilling performance. Stick-slip refers to the erratic axial movement of the drill string, causing uneven cutting action and reduced drilling efficiency. Implement measures to mitigate vibrations and stick-slip, such as optimizing drilling parameters, using appropriate drilling fluids, and employing vibration-resistant tools or bottom hole assemblies.
Reamer run-in strategy: Plan an appropriate run-in strategy when deploying the diamond reamer downhole. Consider factors such as wellbore conditions, hole trajectory, and operational constraints. Ensure that the reamer is run in smoothly and gradually to minimize the risk of tool damage or sticking. Constant monitoring during the run-in process helps detect any issues early on and allows for timely adjustments if needed.
Post-reaming wellbore evaluation: After the reaming operation is complete, evaluate the quality of the wellbore. Conduct a thorough inspection using wellbore imaging tools or wireline logging techniques to assess the gauge hole size, smoothness, and overall wellbore integrity. This evaluation provides valuable information for subsequent drilling or completion operations.
Continuous learning and improvement: Reaming operations can benefit from continuous learning and improvement. Maintain a repository of drilling data, including performance metrics, lessons learned, and best practices. Analyze the data to identify trends, optimize drilling processes, and enhance the selection and use of diamond reamers for future operations.
It's important to note that the specific details and considerations for using a diamond reamer may vary based on the drilling environment, well objectives, and equipment being used. Always refer to the manufacturer's guidelines, consult with drilling experts, and adhere to industry standards to ensure safe and efficient reaming operations.
Q&A
What is the difference between natural and synthetic diamonds used in diamond reamers?
Natural diamonds are mined from the earth, while synthetic diamonds are artificially created. Synthetic diamonds are often preferred for their consistent quality and lower cost.
Are there different types of diamond reamers?
Yes, there are various types of diamond reamers, including solid diamond reamers, diamond-coated reamers, and polycrystalline diamond (PCD) reamers.
What are solid diamond reamers?
Solid diamond reamers have a cutting edge made entirely of diamond. They are known for their exceptional hardness and wear resistance.
What are diamond-coated reamers?
Diamond-coated reamers have a steel body with a thin diamond coating applied to the cutting edges. They offer a balance between cost and performance.
What are polycrystalline diamond (PCD) reamers?
PCD reamers have a cutting edge made from a layer of polycrystalline diamond material. They are highly wear-resistant and suitable for high-speed machining
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 |
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