| 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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Here are some additional details about drill rods:
Thread Types: Drill rods feature threaded connections on each end to facilitate their assembly and disassembly. There are various thread types used in drill rods, and the selection depends on factors such as the drilling method, equipment compatibility, and regional standards. Some common thread types include:
API Threads: The American Petroleum Institute (API) sets standards for drill pipe threads, including API Regular (REG) and API Internal Flush (IF) threads. These threads are widely used in the oil and gas industry.
Mayhew Junior (MJ) Threads: MJ threads are commonly used in wireline drilling applications. They have a coarse thread profile and provide a reliable connection for quick assembly and disassembly.
Remet Threads: Remet threads are widely used in diamond core drilling. They have a flush joint design that allows for easy retrieval of the core sample without removing the entire drill string from the borehole.
Metzke Threads: Metzke threads are another type of thread used in diamond core drilling. They feature a double-start thread profile that ensures a secure connection and provides excellent resistance to torsional forces.
API Reg Box x Pin: This thread type features a box connection on one end and a pin connection on the other. It allows for the connection of different types of drill rods or tooling with compatible thread configurations.
Drill Rod Length: Drill rods come in various standard lengths, typically ranging from 1 to 6 meters (3 to 20 feet). The length of the drill rod affects the drilling depth that can be achieved without adding additional rods. Longer drill rods are generally used for deeper drilling applications, while shorter rods are suitable for shallower holes or areas with space constraints.
Rod Joints and Couplings: Drill rods are typically connected to each other using rod joints or couplings. These components allow for the extension of the drill string to reach the desired drilling depth. Rod joints are threaded connections that join two drill rods together, while couplings are shorter sections with male and female threads on each end that enable the connection of multiple rods.
Rod Inspection and Testing: Drill rods undergo rigorous inspection and testing to ensure their quality, performance, and safety. Some common inspection and testing techniques include:
Visual Inspection: Visual examination is conducted to detect any visible defects, such as cracks, wear, or thread damage. It is an essential first step in assessing the condition of the drill rods.
Ultrasonic Testing: Ultrasonic testing uses high-frequency sound waves to detect internal flaws or defects in the drill rods. It can identify cracks, voids, or other anomalies that may not be visible to the naked eye.
Magnetic Particle Inspection: Magnetic particle inspection involves applying a magnetic field to the drill rods and then applying iron particles to the surface. This method can reveal surface cracks or defects that can affect the integrity of the rods.
Hardness Testing: Hardness testing is performed to assess the hardness and strength of the drill rod material. It helps ensure that the rods meet the required specifications and can withstand the drilling forces.
Load Testing: Load testing involves applying a specified load to the drill rods to evaluate their strength and resistance to deformation. It helps verify the structural integrity and performance of the rods under realistic drilling conditions.
Environmental Considerations: In certain drilling applications, such as environmental or geotechnical drilling, special considerations may be required to minimize environmental impact. For example, drill rods used in groundwater monitoring wells may need to be made of non-contaminating materials to prevent the introduction of foreign substances into the groundwater.
Drill rods are crucial components in drilling operations, and their selection, compatibility, inspection, and testing play a vital role in the overall drilling process. By understanding the different thread types, rod lengths, jointing methods, inspection techniques, and environmental considerations, drilling professionals can make informed decisions and ensure the safe and efficient use of drill rods in their projects.
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 directional well surveying?
A: Periodic inclination/azimuth measurements track wellbore trajectory using gyro/accelerometer instruments and ensure planned profile is maintained safely.
Q2: What is logging-while-drilling (LWD)?
A: LWD tools transmit downhole formation measurements in real-time as drilling progresses to identify payzones for targeting without separate wireline logs.
Q3: What problems can cause stuck pipe?
A: Formation issues like hole sloughing, washouts, swellable shales, losses, overgauge borehole, ledges, fractures around bit, and tight spots increase risk if circulation is lost.
Q4: What events require NPT reports?
A: Issues causing tripouts, stuck pipe, well control incidents, equipment failures, prolonged weather delays, fishing jobs, mechanical problems, hole condition stalling progress, and similar productivity losses over time.
Q5: What is managed pressure drilling?
A: MPD uses precise annular pressure control and monitoring during operations to reduce formation
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