| 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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Q&A
Q1: Why are cementing operations important after lateral reaming?
A1: Cleaning removes cuttings/debris preparing smooth zonal isolation between the borehole and subsequent casing strings maintaining well integrity with centralized cement placement eliminating bridging/channeling weaknesses vital for lateral productivity.
Q2: What challenges arise when reaming inclined/horizontal intervals?
A2: Increased friction/vibration requires stabilization. Pressure spikes from fractures/cavities pose control risks. Tight clearances necessitate specialized cleaning. Directional control maintaining build/azimuth necessitates proper steering/logging while reaming laterally as planned without spiraling off path.
Q3: How does gas influx impact managed pressure reaming operations?
A3: Surface equipment precisely controls downhole pressures counteracting gas zones to prevent kicks without swabbing or fractures if pressure inadvertently decreases below formation strength. Special techniques like foams safely displace gas while maintaining well control for personnel protection.
Q4: What factors are considered when pressure controlling extended reach laterals?
A4: Pressure losses increase due to friction/pipe resistance across long reaches necessitating automated surface pumps precisely delivering optimized flow/pressures maintaining cleaning/directional control despite pump pressures degrading far into extended laterals. Proper fluid properties are critical.
Q5: Why is cement evaluation important post-reaming complex profiles?
A5: Validating zonal isolation through logging detects potential cement defects from channeling/washouts in reamed trajectories before production commences. Remediation protects reservoirs through verified barriers in complex wells with annular spaces difficult to cement across multiple intervals and orientations.
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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