High Performance Die Collar For Making Buckles On Oil Pipes And Drill Pipes
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Product Overview
Die Collar produced and sold by our company Huichi petro is the core tool used for casing connection and repair in oilfield drilling and repair operations. It is specially designed to efficiently deal with downhole casing fracture, deformation or drilling problems. It uses high-strength alloy material and precision thread processing technology, and is suitable for casing of various specifications, which can quickly complete casing repair or salvage operations, improving drilling efficiency and wellbore integrity.
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Core Functions And Features
1. High strength sleeve connection
o Precision-machined thread design complies with API standards, ensuring firm connection and excellent sealing of casing, suitable for high pressure (up to 10000psi) and complex well conditions.
o Supports multiple casing specifications (5″-13⅜″), suitable for the operation needs of conventional drill pipes and continuous oil pipes.
2. Multifunctional repair and salvage
- It can be combined with hydraulic disassembly and other tools to achieve rapid repair or salvage of casing fractures, reduce residual fragments of the wellbore and ensure safety of subsequent operations.
- Modular design supports rapid replacement of worn parts, reducing maintenance costs and downtime.
3. Corrosion resistance and long life
- It is made of chromium molybdenum steel or nickel-based alloy, which withstands high temperature (-30℃ to 150℃), acidic media and underground corrosion environment, and extends the service life of the tool.
4. Various specifications are available
- Depending on the drilling needs and collar sizes, Die Collar offers a variety of specifications and models for users to choose from to meet the needs of different drilling operations.
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Product Type
The Die Collar products produced and sold by Huichi petro are diverse in specifications and can be adapted to drilling tools of different inner diameters. Common female cone specifications cover the internal hole size range of commonly used drill tools in oil fields, from smaller diameters to larger diameters, and there are corresponding models to choose from. At the same time, special specifications of female cones can be customized according to customers' special needs to meet the diverse oil field salvage operation needs.
- Ordinary female cone: suitable for drilling tool salvage with conventional sizes and standard inner hole structures. Its design meets industry-wide standards and can cope with most general salvage operation scenarios. Its operation is relatively simple and is the first choice tool for daily oil field salvage operations.
- Variable buckle female cone: When encountering drill holes of different specifications or special buckle types, the Variable buckle female cone plays a role. It can be adapted to a variety of different types of inner hole buckle types through a special variable buckle structure.
- High-strength female cone: For some drilling tools that fall off in deep wells, ultra-deep wells or harsh geological conditions, this type of female cone is made of high-strength alloy steel, and has a special heat treatment process to make it stronger. Tensile, impact and wear resistance, can still reliably connect and salvage drill tools while withstanding huge tension and complex stresses.
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Main Technical Parameters
- Applicable casing type: API standard casing (J55, K55, N80, etc.)
- Working pressure: ≤10000psi
- Adaptation tools: hydraulic disassembly (maximum torque of 300kN·m), continuous oil pipe operation system
- Thread accuracy: Comply with API Spec 5B standard
| Typre | Connection | Fishing Range mm(in) |
| MZ/NC26 | NC26 | 48(1 7/8)~50(2) |
| MZ/NC26 | NC26 | 59(2 5/16)~60(2 3/8) |
| MZ/NC26 | NC26 | 68(2 4/9)~73(2 7/8) |
| MZ/NC31 | NC31 | 69(2 3/4)~73(2 7/8) |
| MZ/NC31 | NC31 | 71(2 4/5)~82(3 1/4) |
| MZ/NC31 | NC31 | 89(3 1/2)~93(3 5/8) |
| MZ/NC38 | NC38 | 95(3 3/4)~118(4 5/8) |
| MZ/NC38 | NC38 | 90(3 9/16) |
| MZ/NC50 | NC50 | 127(5) |
| MZ/4 1/2″FH | 4 1/2″FH | 120(4 3/4) |
| MZ/4 1/2″FH | 4 1/2″FH | 141(10 1/5) |
| MZ/6 5/8″REG | 6 5/8″REG | 168(6 5/8) |
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Product Advantages
- Efficient operation: The casing repair or salvage can be completed in a single operation, reducing the number of drilling and saving work time by more than 30%.
- Strong compatibility: adapted to mainstream drilling platforms and well repair equipment, and supports a variety of well types such as straight wells and horizontal wells.
- Safety and reliability: Passed ISO 9001 quality certification, strictly followed HSE standards, and avoided wellbore pollution and operation risks.
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Application Scenarios
Die Collar is widely used in marine and terrestrial oil drilling operations, especially in scenarios where drilling collars need to be fixed and supported, ensuring safe and smooth drilling operations. It is one of the indispensable and important components in oil drilling equipment.
- Casing repair: Quickly repair downhole casing deformation or breakage to restore the structural integrity of the wellbore.
- Salvage operation: Use salvage tools (such as shockers, grinding shoes) to remove foreign objects in the drilling hole.
- Discarded well sealing: Accurately cut and recycle the discarded casing to facilitate subsequent cement sealing.
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After-sales Service
- Provides 24-hour global technical support, covering major oil-producing areas such as North America, the Middle East, and Southeast Asia.
- Free replacement and repair services for non-humanly damaged parts during the warranty period.
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Product display:
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Product package:
Product packaging: iron box or iron frame, wooden pallet, wooden box, bulk or customized according to customer requirements.
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Product detection:
100% inspection will be carried out before shipment, and video image data and inspection reports will be provided.
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Accepted delivery terms:
FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, DES.
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About HuiChi (HC) petro:
Shandong Huichi Industry & Trade is a professional supplier of drilling equipment for the oil and gas industry. We are committed to providing the best products and services to customers around the world.
We HuiChi (HC) Petro always regard our customers as our partners and aim to achieve long-term cooperation value. Our Huichi products cover different fields such as oil fields, water wells, HDD, etc.
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Why choose HuiChi (HC) petro?
One-stop drilling equipment supply;
Employee engineers have more than 10 years of experience in supplying drilling equipment;
More than 10 people engaged in export business;
More than 40 partner countries and regions;
More than 200 customers having close cooperative relationships;
More than 250+ partner factories as suppliers.
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Focus on well drilling equipment , we have been working hard and hope to become your most professional oil & gas equipment supplier and the best partner!
Sales Manager:Cherry Chi
Email: cherry@huichipetro.com
Mob/WhatsApp/We chat: +86 15553820372
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.



