Customization: | Available |
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Type: | Wireline Drill Rod |
Usage: | Core Drilling |
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When using a wireline drill rod, there are several precautions you can take to avoid problems and ensure safe and efficient drilling operations. Here are some guidelines to follow:
Equipment Inspection and Maintenance:
Correct Handling and Assembly:
Drilling Operation Precautions:
Safety Measures:
By following these guidelines, you can minimize the risk of problems when using a wireline drill rod and ensure safe and efficient drilling operations. Remember to always prioritize safety, regular maintenance, and adherence to manufacturer's guidelines.
Parameter table
Size | Outer Diameter (mm) | Inner Diameter(mm) |
AQ | 44.7 | 37.3 |
BQ | 55.7 | 46.1 |
NQ | 70.0 | 60.2 |
HQ | 89.0 | 78.0 |
PQ(PHD) | 114.5 | 101.5 |
BTW | 56.3 | 48.0 |
NTW | 73.3 | 64.0 |
HTW | 91.3 | 81.0 |
AW/AWJ/AWY | 43.7 | 30.7 |
BW/BWJ/BWY | 54.0 | 38.0 |
NW/NWY | 66.8 | 51.0 |
HW | 89.0 | 71.0 |
42mm | 42.0 | 30.0 |
50mm | 50.0 | 37.0 |
60mm | 60.0 | 48.0 |
70mm | 73.0 | 54.6 |
90mm | 89.0 | 69.0 |
S75A | 71.0 | 60.0 |
S95A | 89.0 | 78.0 |
S110 | 110.0 | 98.0 |
S130 | 129.0 | 117.0 |
Name: | Wireline Drill Rod |
Product Basic parameters | |
Model: | AQ,BQ,LTK48,NQ,NQ3,HQ,HQ3,PQ,PQ3 NTW, BTW, HTW |
Material: | Alloy Steel Tubing |
Dimensions: | 0.5,1m, 1.5m, 2m,2.5,3m length or customized |
Color: | Black or customized |
Applications: | Drilling Tools |
Standard: | ISO-9001 |
Application: | Mining or geological Drilling |
Rod Model | OD (mm) | ID (mm) | Thread Pitch(mm) | Pin Length(mm) | Rod Length(m) | Unit Bundle Qty (pcs) |
BAU(Q) | 55.6 | 46.1 | 8.5 | 44.5 | 3 | 19/25/30 |
NAU(Q) | 69.9 | 60.3 | 8.5 | 44.45 | 3 | 19/25/30 |
HAU(Q) | 88.9 | 77.8 | 8.5 | 44.45 | 3 | 19/25/30 |
BRAU(RQ) | 55.6 | 46.1 | 8.5 | 42 | 3 | 19/25/30 |
NRAU(RQ) | 69.6 | 60.3 | 8.5 | 42 | 3 | 19/25/30 |
HRAU(RQ) | 88.9 | 77.8 | 8.5 | 42 | 3 | 19/25/30 |
PHD | 114 | 102 | 10.2 | 63 | 3 | 79/25/30 |
FAQ:
Q1: What causes a core barrel to get stuck?
A: Compacted cuttings, tight spots in the hole, ledges in the formation, swelling reactive shales can all cause the core barrel to bind up and prevent retrieval to surface.
Q2: How do you free a stuck core barrel?
A: Try jarring or applying a jarring sequence, rotating and applying weight to help break it loose. Circulate heavy fluid for support. Mill or drill if mechanical attempts fail.
Q3: What causes core to be washed away during coring?
A: Insufficient fluid circulation and cleaning around the core face, insufficient viscosity of drilling fluid, excessive flow rate, turbulent fluid flow can all wash away weak formation before being cut.
Q4: How do you prevent core washout?
A: Optimize drilling fluid properties and ensure laminar flow past the core face area. Potential options include foam or polymer-treated mud, reduced pump rates and proper reaming techniques.
Q5: What causes core to break up on retrieval?
A: Excessive shocks or vibration tripping in/out, fluid pressure changes degrading the core integrity downhole, insufficient sleeving support during handling and extraction.
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