| Customization: | Available |
|---|---|
| Type: | Core Drill |
| Usage: | Coring |
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Here are some more details on the topic of diamond reamers:
Reamer selection for geosteering: Geosteering is the process of adjusting the wellbore trajectory in real-time to stay within a specific target zone, such as a reservoir or a productive formation. Diamond reamers play a crucial role in geosteering by providing accurate and precise control over the wellbore path. Reamers with adjustable cutter configurations or steerable technologies can be used to navigate the wellbore and maintain the desired position within the target zone.
Reamer customization for drilling with casing: Drilling with casing (DwC) involves simultaneously drilling and running casing in a single trip. Diamond reamers can be customized for DwC operations, taking into account the specific challenges associated with drilling through casing, such as reduced annular clearances and the need for efficient cuttings removal. Specialized reamers with casing-friendly designs can ensure smooth drilling progress and effective wellbore cleaning.
Reamer design for drilling in permafrost: Permafrost drilling refers to drilling operations conducted in regions where the ground is permanently frozen. Diamond reamers used in permafrost drilling must be designed to handle the unique challenges posed by the frozen formations, including extreme cold temperatures, ice formations, and the potential for ground heave. Reamers with enhanced thermal insulation and cutter designs that minimize heat generation can help mitigate the risks associated with drilling in permafrost.
Reamer selection for managed annular pressure control (MAPC): Managed annular pressure control is a technique used to maintain the pressure within the wellbore annulus during drilling. Diamond reamers can be selected or customized to be compatible with MAPC systems, allowing for precise pressure management and control while ensuring efficient cutting performance and hole cleaning.
Reamer design for torque and drag reduction: Torque and drag are common challenges encountered during drilling operations, especially in extended reach wells or highly deviated wellbores. Diamond reamers can be designed to minimize torque and drag by incorporating features such as low-friction coatings, optimized cutter placement, or cutter configurations that reduce the contact area with the formation.
Reamer customization for real-time data acquisition: Real-time data acquisition is essential for monitoring drilling parameters, evaluating formation characteristics, and making informed decisions during drilling operations. Diamond reamers can be customized to incorporate sensors or data acquisition systems that provide real-time information on factors such as weight on bit, torque, vibration, and temperature. This data can then be transmitted to the surface for analysis and decision-making.
Reamer selection for extended lateral sections in horizontal drilling: Horizontal drilling involves drilling wells with extended lateral sections, often reaching several thousand feet. Diamond reamers used in horizontal drilling should be designed to maintain stability, improve ROP (Rate of Penetration), and ensure effective cuttings removal in the horizontal section. Reamers with optimized cutter arrangements, gauge cutters, or stabilizer blades can help achieve these objectives.
Reamer design for reducing wellbore tortuosity: Wellbore tortuosity refers to the deviation or irregularity in the wellbore path. Excessive tortuosity can lead to challenges such as restricted access, increased friction, or ineffective production. Diamond reamers can be designed to minimize wellbore tortuosity by incorporating features that promote smooth drilling progress, such as optimized cutter placement, gauge cutters, or stabilization elements.
Reamer customization for underbalanced drilling: Underbalanced drilling involves maintaining the pressure in the wellbore lower than the formation pressure. Diamond reamers used in underbalanced drilling should be designed to handle the specific challenges associated with this technique, such as the potential for fluid influx, differential sticking, or wellbore instability. Customized reamers can incorporate features that enhance wellbore stability, fluid management, and efficient hole cleaning in underbalanced drilling environments.
Reamer selection for hard rock formations: Diamond reamers are particularly effective in drilling hard rock formations, where conventional drilling tools may struggle to achieve satisfactory results. The diamond cutters on the reamer can efficiently penetrate and break down hard rock, allowing for faster drilling rates and improved tool life. Reamers with optimized cutter geometries and enhanced cutter durability can be selected for drilling in hard rock formations.
These additional details provide further insights into the applications, customization options, and challenges addressed by diamond reamers in various drilling scenarios. By considering the specific requirements and conditions of the drilling operation, operators can choose or customize diamond reamers to optimize drilling performance, enhance drilling efficiency, and achieve successful outcomes.
Q&A
Q1: How are reaming operations planned and executed?
A1: Detailed planning considers expected geology, pressures, hole sizes/tolerances needed. Suitable rig, bits, fluids are selected. Operations involve sequencing core/reaming runs with cleaning/surveying between. Parameters are optimized based on penetrometers, surveys and cuttings analysis. Permits/safety are critical.
Q2: Why is optimal fluid selection important for reaming?
A2: Mud properties like viscosity, gel strength and filtrate composition influence bit hydraulics,bore stability and cuttings transport. Hard/abrasive rock requires balanced fluid to facilitate cleaning and avoid washouts/bit stalling. Environmental regulations require non-toxic solutions.
Q3: What formation evaluation tools are used during reaming?
A3: Wireline logging tools like gamma, resistivity, MWD oriented logging-while-reaming help characterize formations, locate hydrocarbon/water zones. Formation tester tools collect pressure/fluid samples. Borehole images assist navigation in complex geology. This data aids production decisions, equipment selection.
Q4: Why are multiple reaming runs sometimes required?
A4: Hard formations may require multiple passes with different bit grades due to depth/pressure intervals. Washouts also necessitate re-reaming. Steeply dipping strata demand successively larger bits exiting zones. Under-reaming precludes full diametral passes eliminating need for single large reamer.
Q5: How does hydraulics influence reamer performance?
A5: Proper flow rate, pressures and fluid viscosity are critical for cutting transport, heat dissipation and supported WOB. Insufficient flow starves the bit while excessive pressure stresses components without improving penetration rates. Hydraulics must match rock properties/reamer requirements.
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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