| 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 Wireline drill pipe, is a specialized type of drill pipe used in mineral exploration and geological surveying. Here are some key details about wireline drill pipe:
Purpose and Function: Wireline drill pipe is primarily used for retrieving core samples during diamond core drilling. It serves as the conduit for the drilling tools and wireline system, allowing the core sample to be retrieved without having to remove the entire drill string from the borehole.
Design and Construction: Wireline drill pipe consists of a hollow inner tube made of high-strength steel. The inner tube is typically thinner and lighter compared to the outer drill string. It has a continuous, smooth internal surface to facilitate the efficient retrieval of the core sample.
Wireline System Integration: Wireline drill pipe is an integral part of the wireline coring system. The wireline system includes components such as the wireline winch, wireline cable, and wireline overshot. The overshot is connected to the top end of the wireline drill pipe and is used to engage and retrieve the core sample.
Core Sample Retrieval: The wireline coring process involves drilling the borehole using a conventional drilling assembly, such as a diamond bit, while the wireline drill pipe remains in place. Once the desired depth is reached, the drilling assembly is retrieved, leaving the wireline drill pipe inside the borehole. The wireline overshot is then lowered into the borehole, engaging the core sample, and pulling it to the surface for examination and analysis.
Quick and Efficient Core Recovery: One of the main advantages of wireline drill pipe is its ability to retrieve core samples quickly and efficiently. The wireline overshot can engage and retrieve the core sample in a matter of minutes, allowing for continuous drilling operations with minimal downtime.
Core Orientation and Preservation: Wireline drill pipe facilitates core orientation, which is crucial for accurate geological interpretation. Specialized orientation devices can be attached to the wireline overshot to determine the azimuth and dip of the retrieved core samples, providing valuable information about the geological structure.
Different Sizes and Configurations: Wireline drill pipe comes in various sizes and configurations to accommodate different drilling requirements. The size and configuration depend on factors such as borehole diameter, desired core size, and drilling conditions. Common sizes range from B-size (1.438 inches or 36.5 mm) to P-size (3.345 inches or 84.8 mm).
Core Barrel Parts: The wireline drill pipe consists of several parts that make up the core barrel assembly. These include the inner tube, core lifter, core lifter case, overshot assembly, and core bit. The core lifter and core lifter case are designed to hold the core sample securely within the inner tube during retrieval.
Quality Control and Inspection: Wireline drill pipe undergoes strict quality control measures to ensure its reliability and performance. Manufacturers conduct inspections and testing during the production process to verify compliance with industry standards. Regular inspections of the wireline drill pipe are also conducted during drilling operations to detect any defects or signs of wear.
Safety Considerations: Safety is paramount in wireline coring operations. Proper training and adherence to safety protocols are essential when handling wireline drill pipe and operating the wireline coring system. Following safety guidelines helps prevent accidents, injuries, and damage to the equipment.
Wireline drill pipe plays a crucial role in diamond core drilling, enabling efficient core sample retrieval, core orientation, and geological analysis. Its design, integration with the wireline system, and quality control measures ensure reliable and accurate results in mineral exploration and geological surveying.
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 drilling and what are its applications?
A: Directional drilling is the technique of controlling the downhole tools to intentionally deviate a wellbore from vertical to a predetermined target location using specialized bottomhole assemblies. It allows drilling of long horizontal sections, steering around obstacles, accessing multiple zones from one surface location.
Q2: What is coiled tubing drilling and how is it different from conventional drilling?
A: Coiled tubing uses continuous lengths of small-diameter thin-walled tubing which is spooled and unspooled for running tools into live wells. It avoids having to assemble/disassemble tubing joints. This allows drilling, intervention or cleaning out fluid-producing zones without shutting the well in. However, it has less capacity than conventional drillpipe.
Q3: What are measurement-while-drilling (MWD) and logging-while-drilling (LWD) tools?
A: MWD tools provide downhole wellbore surveys to track inclination/azimuth of borehole trajectory during drilling. LWD tools make downhole formation evaluations via embedded sensors to log properties like resistivity, gamma radiation, porosity without needing wireline runs. Both stream real-time data up the drillstring to optimize directional control and decision making.
Q4: What is casing and what are its functions?
A: Casing refers to steel pipe inserted into a drilled borehole and cemented in place. Its functions include: protecting formations against caving/fluid invasion, providing structural integrity to the borehole for subsequent drilling/completion operations, isolating formations, allowing controlled production/injection intervals. Proper casing design is crucial.
Q5: What are common drilling problems encountered during operations?
A: Examples include lost circulation from fractured formations, wellbore instability/caving, stuck pipe from packed off cuttings/tight spots in hole, blowouts from formation fluid kicks, fires and explosions from hydrocarbons, drillstring failures, debris in hole obstructing BHA, drilling fluid problems like thickening/contamination, downhole equipment failures. Proper prevention/mitigation is required.
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