Custom High Strength Alloy Steel Lifting Sub For Oil And Gas Drilling

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Product overview:

The Lifting Sub produced and sold by our company Huichi Petro is a core tool for connecting drill pipes or drill collars in oil, gas and geological exploration drilling operations, and is used to safely lift and lower drill collars and other drilling tools. It uses high-strength alloy steel materials and standardized design to connect drill collars and elevators. During operations such as drilling and casing, it can withstand the huge pressure and torque during drilling, ensuring the stability and safety of the drill tool assembly during drilling, and is widely used in complex drilling environments on land and at sea.
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Working principle:

During the oilfield drilling lifting operation, one end of the Lifting Sub is firmly connected to the drill string or other downhole tools through threads, and the other end is connected to the lifting equipment (such as lifting rings, faucets, etc.). When the lifting equipment is started, the lifting force generated is transmitted to the drill string through the Lifting Sub to achieve the lifting or lowering of the drill string. At the same time, during the rotary drilling process, torque is also transmitted through the Lifting Sub to ensure that the drill bit can effectively break the rock and complete the drilling task.
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Core functions:

• Adaptable elevator structure: Two structures are provided: 18° inclined shoulder (Type A) and 90° straight shoulder (Type B), which can flexibly match the requirements of different types of elevators.
• Efficient load transfer: Forged with high-strength alloy steel, it can withstand extreme tension and torque, ensuring the stability of power transmission during the lifting of drilling tools.
• Standardized interface: The thread buckle type strictly follows API specifications (such as NC23, NC26, NC50, etc.) to ensure seamless compatibility with the drill string system.
• Resistant to harsh working conditions: In view of the high humidity and high salinity in the oilfield drilling environment, the surface of Lifting Sub has undergone special anti-corrosion treatment, such as hot-dip galvanizing and nickel plating. These anti-corrosion coatings can effectively resist the erosion of various chemical substances, extend the service life of the product, reduce maintenance costs, and maintain good performance even in long-term harsh underground environments.

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Technical parameters:

• Material: high-quality alloy structural steel (such as 4145H/4140), tempered and heat treated to improve comprehensive mechanical properties.
• Specification range:

         o Outer diameter (OD): 2-7/8" to 9", suitable for a variety of drilling tool combinations.
         o Length: 36" to 300", support non-standard customization.

• Thread type standard: API standard threads such as NC, FH, REG, support special thread type customization.
• Inspection and certification: 100% ultrasonic flaw detection (UT) + magnetic particle inspection (MPI), in line with API SPEC 7-1 specifications.

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Applicable scenarios:

The Lifting Sub produced and sold by our company Huichi petro is widely used in the exploration and development of mineral resources such as oil and natural gas.
    1. Drilling operation: During drilling operations such as changing the drill bit and checking the drilling tools, the Lifting Sub, as a connecting hub, frequently bears the weight and lifting force of the drill string to ensure that the drill string is lifted and lowered smoothly and safely.
    2. Casing operation: During the casing operation, the Lifting Sub connects the casing and the lifting equipment to ensure that the casing can be accurately lowered to the predetermined depth. In this process, it bears the weight of the casing itself and the impact force during the lowering to ensure the smooth operation.
    3. Special drilling operations: In special drilling processes such as directional drilling and horizontal drilling, the Lifting Sub not only needs to transmit lifting force and torque, but also needs to adapt to complex wellbore trajectories to ensure that the drilling tools can drill in the predetermined direction.
    4. Land deep well, ultra-deep well and horizontal well operations.
    5. Offshore platform drilling tool lifting and lowering operations.
    6. Complex geological conditions such as sulfur-containing formations and hard formations.
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Product advantages:

• High safety: The structural strength reaches the mechanical performance standard of drill collars, ensuring zero failure in underground operations.
• Flexible customization: Support non-standard sizes, buckle types and surface treatments (such as nitriding/chrome plating) to meet special working conditions.
• Convenient maintenance: Surface hardening treatment reduces wear rate and maintenance costs by more than 30%.

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Reasons for choosing Huichi petro:

    1. Professional manufacturing: With advanced production equipment and mature manufacturing processes, we strictly follow international and domestic standards for production. From raw material procurement to finished product delivery, every link is strictly tested to ensure reliable product quality.
    2. Rich industry experience: After years of deep cultivation in the field of oilfield drilling equipment, we have accumulated rich practical experience and can provide professional selection suggestions and solutions according to different drilling conditions and technical requirements of customers.
    3. Perfect after-sales service: We have established a perfect after-sales service system, and the professional after-sales team provides technical support and product maintenance services to customers at any time, global rapid response, and 48-hour emergency logistics services. During the product warranty period, if there is any quality problem, we will replace or repair it for free, so you don’t have to worry about it.
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Contact us:

Get the lifting short section technical manual and customized solution immediately to provide reliable protection for your drilling project!
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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