| Customization: | Available |
|---|---|
| Type: | Core Drill |
| Usage: | Coring |
|
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Here are some more details on the topic of diamond reamers:
Reamer design for underreaming operations: Underreaming is a process used to enlarge the wellbore diameter below the casing shoe or previously drilled section. Diamond reamers designed for underreaming operations should have robust construction and cutting structures capable of removing a significant amount of formation material. They may feature expandable cutter arms or blades that can be deployed to achieve the desired wellbore diameter.
Reamer selection for wellbore cleanout: Wellbore cleanout operations involve removing debris, cuttings, or other obstructions from the wellbore to ensure optimal well performance. Diamond reamers can be selected based on their ability to effectively clean the wellbore while minimizing the risk of getting stuck or creating additional debris. Reamers with large junk slots or specialized cutter designs for efficient cuttings evacuation are commonly used for wellbore cleanout.
Reamer customization for abrasive mud systems: The drilling mud used in drilling operations can vary in composition, and some mud systems contain abrasive particles that can accelerate cutter wear. Diamond reamers can be customized to withstand the abrasive nature of specific mud systems by incorporating wear-resistant materials, advanced cutter designs, or protective coatings that enhance cutter durability and maintain cutting efficiency.
Reamer design for high-speed drilling: High-speed drilling refers to drilling operations that aim to achieve faster penetration rates. Diamond reamers designed for high-speed drilling should have optimized cutter configurations and geometries to maximize cutting efficiency and minimize frictional forces. These reamers may incorporate features such as low-friction coatings, reduced cutter spacing, or enhanced hydraulic designs to enable high-performance drilling.
Reamer selection for geothermal drilling: Geothermal drilling involves drilling wells to access and extract heat from the Earth's subsurface. Diamond reamers used in geothermal drilling should be capable of withstanding high temperatures and abrasive formations commonly encountered in geothermal reservoirs. They may feature specialized cutter materials, advanced cooling systems, and robust cutter designs to ensure effective drilling in geothermal environments.
Reamer customization for extended reach drilling: Extended reach drilling (ERD) involves drilling wells with extended lateral sections or significant vertical depth. Diamond reamers customized for ERD operations should have optimized cutter configurations, stabilizer blades, or gauge cutters to maintain stability, enhance ROP, and ensure effective cuttings removal in challenging ERD environments.
Reamer design for slimhole drilling: Slimhole drilling refers to drilling wells with smaller diameters than conventional wells. Diamond reamers designed for slimhole drilling should have compact sizes and slim profiles to fit through restricted wellbore dimensions while maintaining efficient cutting performance. These reamers may incorporate specialized cutter arrangements or innovative cutter technologies to address the challenges associated with drilling in slimhole applications.
Reamer selection for carbonate formations: Carbonate formations, such as limestone or dolomite, present specific challenges in drilling operations due to their varying hardness and abrasive nature. Diamond reamers can be selected based on their ability to effectively drill through carbonate formations, taking into account factors such as cutter hardness, cutter spacing, and cutter exposure to optimize cutting efficiency and tool life.
Reamer customization for environmental considerations: Environmental considerations are becoming increasingly important in drilling operations. Diamond reamers can be customized to address environmental concerns by incorporating features such as environmentally friendly lubricants, reduced energy consumption, or improved waste management systems. These customization options help minimize the environmental impact of drilling activities.
Reamer design for enhanced wellbore quality: Diamond reamers can contribute to achieving high-quality wellbores with smooth surfaces, minimal ledges, and accurate dimensions. Reamers designed for enhanced wellbore quality may include features such as optimized cutting structures, gauge cutters, or stabilization elements that ensure precise wellbore geometry and reduced drilling-induced damage.
These additional details provide further insights into the applications, customization options, and considerations related to diamond reamers in various drilling scenarios. By selecting or customizing diamond reamers to address specific drilling challenges, operators can optimize drilling performance, improve efficiency, and achieve successful outcomes in diverse drilling operations.
Q&A
Q1: What maintenance is required for diamond reamers?
A1: Periodic cleaning, inspection and storage is needed between jobs. Damaged/worn components like bushings, seals and diamonds require timely replacement. Resharpening by dressing restores dull cutters. Proper lubrication protects threads during transportation/storage. Hydraulic systems maintenance ensures efficient reaming.
Q2: What non-productive time affects reaming operations?
A2: Downtime is incurred due to required maintenance/repairs, weather delays, supply issues, rig moves, crew changes, fishing/sidetracking operations and unplanned bit changes when reamers fail prematurely due to misapplication or downhole problems. Risk mitigation and contingency planning aims to minimize NPT.
Q3: Why is rate of penetration important for reaming?
A3: Higher ROP improves efficiency by reducing time spent reaming. It indicates optimal parameters that help avoid bit/tool damage from excessive drilling times.
Q4: What causes reaming pressures to fluctuate?
A4: Varying lithology, fractures, cavities influence pressure spikes and drops monitored at the surface. Compressed cuttings within tight formations and lost returns into formations create peaks requiring well control.
Q5: How does formation productivity impact reaming operations?
A5: Productive zones require specialized non-damaging techniques to prevent losses/fractures. Gas/fluid influxes into holes necessitate blowout preventers, increased surveillance for HSE. Zonal isolation preserves future well architecture.
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 |
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