| 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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some additional details about drill rods in the drilling industry:
Material Selection: Drill rods are typically made from high-quality steel alloys that offer excellent strength, durability, and resistance to wear and fatigue. Common steel grades used for drill rods include AISI 4145H, AISI 4130, and AISI 4140. These grades are known for their high tensile strength, toughness, and corrosion resistance, making them suitable for demanding drilling applications.
In addition to steel, other materials such as aluminum, titanium, and composite materials are being explored for specific drilling applications where weight reduction or specialized properties are required.
Drill Rod Lengths: Drill rods come in various lengths, typically ranging from 1 meter to 3 meters , depending on the drilling method and specific requirements of the project. Longer drill rods allow for deeper drilling without the need for frequent rod changes, thus improving drilling efficiency and reducing downtime.
Thread Types: Drill rods feature threaded connections on each end, allowing them to be joined together to form a drill string. There are several standard thread types used in the drilling industry, including API (American Petroleum Institute) threads, IF (Internal Flush) threads, and REG (Regular) threads. The selection of thread type depends on factors such as drilling method, equipment compatibility, and regional standards.
Thread Protectors: Thread protectors are used to safeguard the threaded connections of drill rods during transportation, storage, and handling. They are typically made of plastic or metal and are designed to prevent damage to the threads, corrosion, and contamination. Thread protectors ensure that the threaded connections remain in optimal condition, allowing for secure and leak-free connections during drilling operations.
Drill Rod Inspection: Regular inspection of drill rods is crucial to ensure their integrity and reliability. Visual inspection is often performed to identify any visible defects, such as cracks, bends, or excessive wear. Additionally, non-destructive testing techniques, such as magnetic particle inspection or ultrasonic testing, may be employed to detect hidden defects or discontinuities that could compromise the strength and performance of the drill rods.
Drill Rod Failure Prevention: To prevent drill rod failures that can lead to costly downtime and potential safety hazards, several measures can be taken:
Proper Torqueing: Ensuring that threaded connections are properly torqued helps prevent connection failures. Under-tightening can lead to loose connections, while over-tightening can cause thread damage or galling.
Avoiding Excessive Bending: Excessive bending of drill rods can lead to fatigue failure. Care should be taken to avoid excessive bending during drilling operations, especially in deviated or horizontal wells.
Regular Maintenance: Regular maintenance, including cleaning, lubrication, and inspection, helps identify and address any issues with the drill rods before they escalate into failures. It is important to follow manufacturer recommendations for maintenance intervals and procedures.
Proper Handling and Storage: Drill rods should be handled and stored properly to prevent damage. They should be protected from impacts, extreme temperatures, and corrosive substances. Using appropriate lifting equipment, such as rod handlers or elevators, helps prevent bending or distortion during handling.
Drill Rod Recycling and Disposal: When drill rods reach the end of their service life or become damaged beyond repair, proper recycling or disposal methods should be followed. Many drill rod manufacturers have recycling programs in place to reclaim and recycle the steel materials. It is important to adhere to local regulations and guidelines for the disposal of drill rods to minimize environmental impact.
Drill rods are critical components in drilling operations across various industries, including oil and gas exploration, mining, geotechnical investigations, and environmental drilling. The selection, maintenance, and proper handling of drill rods are essential for safe and efficient drilling operations, maximizing productivity and minimizing downtime.
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 purpose of drilling mud or fluid?
A: Drilling fluid circulates down and back up, lubricating and removing cuttings, suspending if needed, controlling pressure, and cooling the bit.
Q2: What types of drilling fluid are commonly used?
A: Types include water-based mud, oil-based mud, synthetic-based mud, foam, air/foam, and mist/foam. The type used depends on conditions. Water-based is most common.
Q3: What is the purpose of mud motor or turbine?
A: A positive displacement mud motor or turbine attached below the bit uses drilling mud flow to rotate only the bit, allowing for directional drilling techniques.
Q4: What are the advantages of using mud motors?
A: Benefits include steering ability, drilling curves, more weight on bit, and flexible operations like underreaming.
Q5: What determines the drill string design?
A: Key factors include formation, geometry, depth, method, conditions, fluids, size, rate, and equipment limitations. Proper design is critical.
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