| Type: | Wireline Drill Rod |
|---|---|
| Usage: | Core Drilling |
| Certification: | CE, ISO |
| Material: | Cr-Mo Steel, 4130 |
| Surface Treatment: | Heat Treatment |
| Industry: | Rock Coring Survey |
| Samples: |
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| Customization: |
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Audited Supplier Drill rods play a crucial role in the process of rock coring. Here's a description of their specific functions:
Transmission of Force: Drill rods serve as a conduit for transmitting rotational and axial forces from the drilling equipment to the core bit. The rotary motion and downward thrust applied to the drill rods by the drilling rig or equipment help drive the core bit into the rock formation.
Stability and Alignment: Drill rods provide stability and alignment to the core bit during the coring process. They ensure that the core bit remains in the desired position and orientation while penetrating the rock, minimizing deviation or deflection that could affect the quality and accuracy of the core sample.
Core Sample Retrieval: As the core bit cuts into the rock, the drill rods facilitate the retrieval of the core sample. The core sample is collected in the inner tube or barrel of the core bit, which is attached to the drill rods. The drill rods act as a conduit for the extracted core sample to be raised to the surface for analysis and testing.
Depth Measurement: Drill rods often incorporate depth marks or indicators that allow operators to track the depth of the coring operation. These markings help monitor the progress of the drilling process and ensure that the desired depth is reached.
Compatibility with Accessories: Drill rods are designed to be compatible with various accessories and tools used in the coring process. These may include core barrels, core catchers, or overshot assemblies. The drill rods provide the necessary connection points for attaching these accessories, enabling efficient and effective coring operations.
Containment and Protection: Drill rods help contain and protect the inner components of the coring system. They shield the inner tube or barrel of the core bit, preventing damage or contamination of the core sample during the drilling process. Additionally, drill rods often incorporate protective thread covers or caps to safeguard the threaded connections from debris, impacts, or corrosion when not in use.
Overall, drill rods are essential components in rock coring operations, providing stability, force transmission, core sample retrieval, depth measurement, compatibility with accessories, and protection for the core bit and extracted core samples. Their proper selection, handling, and maintenance are critical to ensure successful and accurate rock coring.
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 is the benefit of continuous core sampling?
A: It provides an intact sample of the lithology for a given depth interval, capturing detail not seen in cuttings or geophysical logs alone for structure/stratigraphy studies.
Q2: How does coring improve geological understanding?
A: Physical rock samples allow direct examination of minerals, textures, fossils and internal structures with a microscope. This reveals depositional and structural clues not detectable through indirect measurement.
Q3: What advantages does coring offer over conventional drilling?
A: In addition to core samples, it also collects oriented formation data with tools like LWD without needing wireline runs later. This improves decision making and saves rig time versus drilling and logging in separate stages.
Q4: How does coring benefit completion design?
A: Detailed core analysis guides perforating and stimulation intervals by identifying reservoirs, fractures and mechanical properties critical for optimizing fluid injection and production profiles.
Q5: How does coring aid reservoir modeling?
A: Permeability, porosity and saturation data from plug analysis combined with identification of lithologies and depositional facies enables more refined 3D numerical fluid flow models for producing zones.
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