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  • Five Essential Wellhead Tools – Elevator Link

    Wellhead tools are essential equipment used on the drill floor for wellhead operations. These tools include elevator links, elevators, slips, safety slips, manual tongs, and roller Kelly bushings. Mastering their use is crucial, as oilfield workers interact with them daily during drilling and wel...
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  • The Working Principle and Application of the Reamer

    The reamer is a tool commonly used in the field of oil drilling. Its main function is to expand the diameter of the wellbore during the drilling process to improve the efficiency of oil and gas extraction.   1. The structure of the reamer The reamer is mainly composed of a drill bit, a reame...
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  • Common defects in forgings

    Common defects in forgings

    Shrinkage and shrinkage: These defects form larger holes at the head or inside of the ingot. Shrinkage is caused by the failure of timely replenishment of metal cooling shrinkage, while shrinkage is often caused by improper cutting of risers during forging or poor mold design. Loose: There is a d...
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  • Working Principle of the Casing Centralizer

    Working Principle of the Casing Centralizer

    In oil drilling operations, the casing centralizer is an essential downhole tool that plays a vital role in ensuring the correct positioning of the casing within the wellbore. By preventing contact between the casing and the wellbore wall, the centralizer reduces the risk of wear, sticking, an...
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  • Heat Treatment Processes to Enhance the Wear Resistance and Service Life of Mandrel Bars

    Heat Treatment Processes to Enhance the Wear Resistance and Service Life of Mandrel Bars

    Mandrel bars play a critical role in the production of seamless steel tubes, undergoing extreme mechanical and thermal stresses during the rolling process. To enhance their wear resistance and prolong their service life, a series of specialized heat treatment processes are required. The primar...
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  • Would you like to know the Core Alloy Components of 4145H Steel?

    Would you like to know the Core Alloy Components of 4145H Steel?

    4145H steel, from the perspective of its alloy composition, belongs to low-alloy high-strength steel. In low-alloy structural steels, the addition of certain amounts of Mn, Cr, Mo, Si, and other alloy elements can effectively improve the hardness, toughness, ductility, and wear resistance of t...
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  • Five Essential Wellhead Tools – Casing Slip

    Five Essential Wellhead Tools – Casing Slip

    Casing Slips are essential wellhead tools used on drilling platforms to operate with other lifting equipment. They play a crucial role in handling drill pipe, casing, and tubing during drilling and well servicing operations. At China Welong, we provide high-quality Casing Slips designed for du...
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  • Introduction to Reamer

    Introduction to Reamer

    1. Types of reamer There are many types of reamer, mainly including expansion and contraction wellbore reamer, sliding keyway reamer and fixed rib reamer with carbide. These tools are different from spiral stabilizers. Their upper and lower inclined shoulders are welded into a cone with carbid...
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  • Classification of stabilizer

    Classification of stabilizer

    In the petroleum industry, stabilizers are mainly used to ensure that downhole tools or tubing are centered in the wellbore, in order to improve operational efficiency and safety. According to different application scenarios and functions, stabilizers can be divided into the following categori...
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  • The Crucial Role and Importance of Oil Casing in Drilling Operations

    The Crucial Role and Importance of Oil Casing in Drilling Operations

    Oil casing plays an essential role in drilling operations by ensuring the stability of the borehole and acting as a protective barrier for the integrity of oil and gas reservoirs. Understanding the basic functions, types, and materials of oil casing is critical for anyone involved in the oil a...
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  • Differences Between Types of Oil Drill Rods

    Oil drill rods are crucial components in drilling operations, and their various types differ significantly in terms of material, structure, function, and application scenarios. Understanding these differences is essential for selecting the right drill rod to enhance drilling efficiency, ensure...
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  • What is the Difference Between String Stabilizer and Near-Bit Stabilizer?

    What is the Difference Between String Stabilizer and Near-Bit Stabilizer?

    Stabilizers are essential tools in drilling operations, designed to maintain the trajectory of the drill string and minimize unwanted vibrations. Two common types of stabilizers used in the oil and gas industry are string stabilizers and near-bit stabilizers. Although they serve similar purpos...
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