API Oilfield Drilling And Workover Tools And Equipment Carbide Surfacing Grinding Shoes

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Product Overview

Milling Shoes produced and sold by our company Huichi petro is an important tool for grinding and milling downhole obstacles in oilfield drilling operations. It is suitable for most common downhole obstacle removal. It is mainly used to grind the well drops (such as gears, cavities, deep well pump accessories, etc.) in complex drilling processes or to repair abnormal structures in the casing (such as burrs, corrosion, deformation sections). It uses special materials and designs, and its surface is surfacing cemented carbide particles, which achieves efficient grinding through rotary cutting, ensures the smoothness of the wellbore and lays the foundation for subsequent operations.

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Product Type

The specifications of milling shoes are rich and varied to meet different borehole sizes and operating requirements. Common outer diameter dimensions range from a few inches to a dozen inches and can be accurately matched according to the actual borehole diameter. At the same time, there are also many choices in terms of the number, shape and arrangement of cutting edges to meet different milling needs.

1. Regular milling shoes: It has universal milling function, suitable for most common underground obstacle removal. Its cutting edge design can effectively break ordinary fall objects and soft cement plugs. It is a relatively basic and commonly used type in drilling operations. It is widely used in general well repair and eyelet expansion operations.
2. Cemented carbide milling shoes: Cemented carbide materials are inlaid on the cutting edge, which greatly enhances the wear resistance and cutting ability of the milling shoes. This type of milling shoes is mainly used to deal with obstacles with higher hardness, such as solid cement rings, metal casing fragments, etc., which can maintain stable milling performance under harsh working conditions.
3. Conical milling shoes: Its appearance is conical, and its unique design allows it to gradually expand the diameter of the wellbore during the milling process and trim the well wall at the same time. Commonly used in directional drilling and horizontal drilling, conical milling shoes can play an important role in encountering situations where the wellbore trajectory needs to be changed or the well wall is repaired.

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Core Functions And Features

      1. Efficient grinding and crushing

        o Carbide surfacing layer provides high wear resistance and impact resistance, and can crush hard falling objects such as tooth wheels, shell skins, metal debris, etc. to prevent the wellbore from being blocked.

        o It is suitable for various structural designs such as flat bottom, concave bottom, and collar eye to meet the needs of different well conditions (such as directional wells and horizontal wells).

      2. Protect wellbore integrity

        o The precision-machined outer diameter matches the casing to reduce secondary damage to the casing and avoid the risk of scratches or drilling.

        o In drilling operations, the well wall may be damaged or irregular. The grinding and milling shoes can repair the well wall through grinding and milling. The well wall after grinding is smooth to ensure the smooth drop of the packer, test tools, etc.

      3. Diversified adaptation and high compatibility

        o Depending on the downhole environment and obstacle type, grinding shoes are available in a variety of specifications and models for users to choose from to meet the needs of different drilling operations, supporting multiple specifications of outer diameters (80mm to 425mm).

        o API standard threaded interface (such as NC31, 6 5/8REG), suitable for different casing sizes and drilling tools combinations.

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Technical Parameters

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Product Advantages

• High durability: The cemented carbide surfacing layer has heat treatment process, and its wear resistance is improved by more than 30%, extending the tool life.
• Flexible operation: Flat-soled grinding shoes are suitable for large-area grinding, concave grinding shoes focus on local repair, and collar eye grinding shoes are suitable for directional drilling.
• Safety and reliability: Comply with API standards and ISO quality system, and ensures underground operation stability through strict tensile and torsional tests (such as tensile 1400kN, torsional 40kN·m).

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Applicable Scenarios

Milling Shoes produced and sold by our Huichi petro company are widely used in marine and terrestrial oil drilling operations, especially in handling downhole obstacles, repairing well walls and improving drilling efficiency. It is suitable for drilling operations of various well depths and casing sizes. Different types of milling shoes can be selected for different downhole working conditions and obstacle types. Whether it is soft sediment or hard metal objects, suitable milling shoes can be found to meet the diverse drilling operation needs. include:

• Treatment of well drops: grind metal residues such as cava teeth and drill bit fragments to restore drilling progress.
• Casing repair: remove rust, burrs or deformation sections, and repair the smoothness of the inner wall of the wellbore.
• Combined construction: Used in conjunction with shock absorbers and salvage tools to improve the efficiency of handling complex well conditions.

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Maintenance And Construction Suggestions

• Pre-operation inspection: Confirm the matching of the outer diameter of the grinding shoe with the sleeve, check the integrity of the carbide layer, and avoid the risk of downhole falloff.
• Operation control: Maintain a stable rotation speed during grinding (30-60rpm recommended), and circulate drilling fluid to flush and adjust the pressure when encountering resistance.
• Maintenance: Clean surface debris after use, regularly detect wear of the welding layer, and return to the factory to repair or replace it in time.

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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