API SPEC 7-1 drill collar is made with rolling or forging AISI4145H chromium molybdenum alloy steel. Therefore, it needs to control chemical composition and the content of trace elements effectively.

Drill collar is a specialized tool used in the drilling of oil and gas wells. It is a heavy and thick-walled tube that is made of high-strength steel. The drill collar is attached to the drill string and is located directly above the drill bit. Its primary function is to provide weight on the drill bit, which helps to maintain a consistent rate of penetration and prevent deviation of the borehole.

One of the key advantages of drill collars is their ability to provide directional control during drilling. By adding more weight to the drill bit, the drill collar helps to keep the bit aligned with the desired direction of the borehole. This is especially important in directional drilling, where precise control of the wellbore trajectory is required.

Drill collars also play an essential role in the transmission of drilling torque from the drilling rig to the drill bit. The heavy weight of the drill collar helps to transfer the rotational force from the drill string to the drill bit, enabling efficient and effective drilling.

In addition to its primary functions, the drill collar can also be equipped with additional tools and accessories to enhance its capabilities. For example, stabilizers can be attached to the drill collar to help maintain the stability of the drill string and prevent it from deviating from the desired path.

Overall, drill collars are crucial components in the drilling of oil and gas wells. Their ability to provide weight, directional control, and torque transmission makes them essential tools for efficient and effective drilling operations. With their high-strength construction and versatility, drill collars are widely used in the oil and gas industry to achieve optimal drilling results.

Specification

Warehouse Storage

Shandong Juhuo Special Steel Co., Ltd. is a comprehensive enterpriseintegrating steel supply and processing. The company has a large inventory of metal materials such as stainless steel, galvanized, profiles, aluminum.copper, lead, etc, which can meet the needs of customers in different fields.The company has strong strength and has a professional team with excellent technology and rich experience.The company has also introduced advanced production equipment and processing technology, which can provide customers with steel products of various specifications and processing requirements.

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We provide the products consultation , purchase plan suggestion , logistic service ( including the shipment service , custom works ,etc ).

Application field

Taking technology as the guide, quality as the guarantee, and service as the purpose, the company actively explores the market, expands the scale of operation, and constantly improves enterprise management to ensure product quality and service quality.