Junk Sub (Fishing Cup) is normally used to catch and remove junks that are too heavy to be circulated preventing them from settling at the bottom of the well-bore. Typical junks are shivers and fallen objects such as carbide tooth, drill bit and bearings which are too heavy to be removed from the well- hole through conventional fluid circulation. Junk Sub’s main function is to keep well bottom clean to increase bit service life, reduce and prevent drill bit from unexpected damage.
The Junk Sub, also known as a Fishing Cup, is an essential downhole tool designed to catch and remove heavy debris and junk that cannot be lifted by conventional circulation methods. It plays a crucial role in keeping the wellbore clean, increasing the service life of the drill bit, and preventing unexpected damage during drilling operations.
Our company specializes in providing high-quality oilfield tools and drilling equipment worldwide. With extensive experience in the industry, we offer reliable solutions tailored to the needs of oil and gas exploration. Our products comply with international standards, ensuring efficiency and durability in demanding drilling applications.
Material Selection: Customizable based on drilling conditions.
Size and Connection Type: Various sizes and connection options available to fit different rigs.
Special Coatings: Anti-corrosion and wear-resistant coatings can be added as per requirements.
High-Quality Manufacturing: Made according to API Spec 7-1 standards, ensuring top-notch performance.
Effective Debris Removal: Keeps the wellbore clean, enhancing drilling efficiency.
Extended Tool Life: Reduces the chances of drill bit wear and failure.
Customizable Solutions: Available in multiple sizes with tailored specifications.
Global Availability: We supply our products to drilling operations.
A Junk Sub is used to collect and remove debris from the bottom of the wellbore that cannot be lifted by fluid circulation. It ensures a cleaner well environment and extends drill bit life.
It uses a cup-like mechanism to trap and retrieve heavy debris, preventing blockages and damage to drilling equipment.
Our Junk Subs are made from high-strength steel with optional anti-corrosion coatings for durability in harsh drilling conditions.
Yes, we offer customization in terms of material, size, connection types, and additional protective coatings.
Regular inspection and cleaning are required to ensure optimal performance. Checking for wear and tear before and after use is also recommended.
The Junk Sub, also known as a Fishing Cup, is an essential downhole tool designed to catch and remove heavy debris and junk that cannot be lifted by conventional circulation methods. It plays a crucial role in keeping the wellbore clean, increasing the service life of the drill bit, and preventing unexpected damage during drilling operations.
The Junk Sub is particularly effective in capturing fallen objects such as carbide teeth, drill bit fragments, bearings, and other heavy shivers that accumulate at the bottom of the well. By maintaining a cleaner well bottom, it enhances operational efficiency and reduces downtime caused by tool failures.
Designed and manufactured according to API Spec 7-1 standards, the Junk Sub ensures durability, reliability, and compatibility with various drilling environments. Its high-strength materials and precise engineering allow operators to perform quick and effective junk removal, ensuring a safer and more efficient drilling process.
Efficient Debris Removal: Designed to capture and remove heavy debris that cannot be lifted through normal fluid circulation.
Improved Drill Bit Longevity: Helps prevent premature drill bit wear and damage by keeping the wellbore clean.
Enhanced Operational Efficiency: Allows for quicker and cleaner scraping jobs, reducing operational downtime.
API Standard Manufacturing: Complies with API Spec 7-1 for reliable performance in demanding drilling conditions.
Multiple Size Options: Available in various sizes to accommodate different wellbore dimensions and drilling requirements.
| Model | Bottom Connection × Top Connection | Cup Outer Diameter (mm) | Upper End Outer Diameter (mm) | Inner Diameter (mm) | Cup Length (mm) | Overall Length (mm) | Hole Size (mm) |
|---|---|---|---|---|---|---|---|
| LB79 | 2 3/8REG B × 2 3/8REG P | 79 | 79 | 19 | 250 | 845 | 88.9–98.4 |
| LB89 | 2 3/8REG B × 2 3/8REG P | 89 | 78 | 19 | 250 | 845 | 108–117.5 |
| LB102 | 2 7/8REG B × 2 7/8REG P | 102 | 93.5 | 31.8 | 250 | 850 | 117.5–124 |
| LB140 | 3 1/2REG B × 3 1/2REG P | 140 | 108 | 38.1 | 250 | 875 | 165–190.5 |
| LB178 | 4 1/2REG B × 4 1/2REG P | 178 | 146 | 57.2 | 250 | 915 | 219–244.5 |
| LB241 | 6 5/8REG B × 6 5/8REG P | 241 | 197 | 76.2 | 250 | 950 | 292–330 |
| LB327 | 7 5/8REG B × 7 5/8REG P | 327 | 241.3 | 76.2 | 250 | 1050 | 375–444.5 |
| LB381 | 7 5/8REG B × 7 5/8REG P | 381 | 241.3 | 76.2 | 250 | 1065 | 432–508 |
Reliable Performance: Designed for long-term use in harsh drilling environments.
Heavy-Duty Construction: Manufactured from high-strength materials to withstand extreme pressure and stress.
Optimized Design: Ensures effective junk retrieval with minimal operational interruption.
Easy Integration: Compatible with various drilling systems and configurations.
Packaging: Securely packed in wooden crates or metal containers for safe transportation.
Shipping Options: Available for air, sea, and land transport, depending on customer requirements.
Lead Time: Typically 7–15 days based on order quantity and customization.
Technical Assistance: Our team of experts is available for guidance on product selection and usage.
After-Sales Support: We provide troubleshooting and maintenance services.
Global Delivery: We ship our products worldwide with flexible delivery options.
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