| 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 placement and deployment: Diamond reamers can be placed at various positions in the drill string depending on the specific drilling objectives. They can be used as part of the bottom hole assembly (BHA) or in combination with other drilling tools. The reamer is typically located above the drill bit or at a specific depth in the drill string to achieve the desired wellbore enlargement.
Reamer selection factors: When selecting a diamond reamer, several factors should be considered. These include the formation type, hardness, and abrasiveness, as well as the desired wellbore size and drilling parameters. The cutter grade, size, and arrangement should be chosen based on the anticipated formation conditions and the expected drilling performance.
Reamer maintenance and refurbishment: Proper maintenance and periodic refurbishment are essential to ensure optimal performance and extended tool life. Regular inspections are conducted to identify any worn or damaged cutters that need replacement. The reamer can be refurbished by replacing worn cutters, repairing damaged components, and restoring the tool to its original specifications. This helps maintain consistent drilling performance and reduces downtime.
Reamer applications in well completion: Diamond reamers are also used in well completion operations. After the drilling phase, reaming can be performed to enlarge the wellbore diameter in specific sections to accommodate the installation of casing or completion equipment. The use of diamond reamers ensures accurate wellbore dimensions and proper well completion.
Reamer designs for specific challenges: Diamond reamers are designed to address specific drilling challenges. For example, in drilling highly deviated or horizontal wells, expandable diamond reamers can be used. These reamers have the ability to expand their diameter while drilling, allowing for efficient hole enlargement in challenging well trajectories.
Reamer optimization and performance modeling: Advanced modeling techniques, such as computational fluid dynamics (CFD) and finite element analysis (FEA), are employed to optimize diamond reamer performance. These modeling approaches analyze factors such as fluid flow, cutter-rock interaction, and heat transfer to optimize the reamer design, cutter arrangement, and drilling parameters.
Research on new diamond reamer technologies: Ongoing research focuses on developing new technologies to enhance diamond reamer performance. This includes the investigation of novel cutter materials, advanced cutter geometries, and hybrid reamer designs. Additionally, research is being conducted to improve the understanding of the fundamental mechanisms involved in diamond reaming processes.
Environmental benefits: Diamond reamers offer environmental benefits in drilling operations. By enabling efficient drilling and reducing the time required for drilling operations, they contribute to lower energy consumption and reduced carbon emissions. Additionally, their extended tool life reduces the amount of waste generated from drilling activities.
Diamond reamers continue to evolve and be optimized for various drilling applications. Advances in materials, manufacturing processes, and drilling technologies contribute to the ongoing improvement of diamond reamer performance, durability, 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 |
|
| 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 does reaming prepare wellbores for horizontal completion?
A1: Cleaning debris prepares central path accommodating expandable liners, screens, gravel packs installed to complete long productive intervals. Smooth tapering profiles optimize multistage completions integrity in laterals prepared by directional reaming techniques.
Q2: What challenges arise when reaming through fractured zones?
A2: Lost returns, tight rubble formations prematurely wear bits due to impact/abrasion. Stabilization, penetration rates require optimization. Drilling fluids manage fractures without inducing instability. Underbalanced/foam applications mitigate problems.
Q3: Why is directional surveying important for complex well architectures?
A3: Intersecting multilateral branches within tolerance ensures productive zones are accurately accessed installing completion equipment as designed. Steering uphole/downhole intersections facilitate productive interval access.
Q4: What challenges arise when reaming highly deviated/horizontal sections?
A4: Increased friction/vibration due to inclination requires stabilization. Directional control maintaining build/azimuth necessitates proper steering/LWD. Pressure spikes from buried fractures/cavities pose control risks. Tight clearances necessitate specialized cleaning techniques.
Q5: Why is controlling bubble point important for reaming gas zones?
A5: Maintaining pressures counteracting formation prevents kicks/losses from underbalanced conditions whilst cleaning. Special fluids like foams displace gas safely for well integrity during operations near productive intervals.
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