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China, Chinese Variable Buckle Joint Tubing Eue1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Petroleum Equipment MachineryCementing ToolOil Field EquipmentTubing
Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
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Product Description description of products1. Product OverviewThe tubing adapter (also known as "conversion joint", "reducer" or "transition joint") is a crucial wellhead tool and tubing accessory in oil and gas drilling and workover operations. Its primary function is to connect tubing, drill pipe or downhole tools with different thread types and/or different nominal sizes, forming a complete and sealed pressure pipeline system. It resolves the on-site problem of inability to directly connect due to inconsistent tool threads, and is a key component for ensuring the continuity of operations and enhancing the flexibility of pipe string assembly. 2. Main Functions and ApplicationsThread Conversion: Connects pipe strings with different thread standards (such as API, BTC, LTC, VAM, NEW VAM, etc.). Size transition: Connecting pipe strings with different nominal outside diameters (OD) or weights (such as 2-7/8" UP TBG connecting to 3-1/2" EUE). Pressure seal: Provides reliable high-pressure sealing between two different connections, capable of withstanding the fluid pressure within the wellbore. Stress transition: Through its structural design, it alleviates stress concentration at the connection points of pipe columns of different sizes. Widely applied: used in pipe string combinations for drilling, well completion, workover, fracturing, well testing and other operations. 3. Product Structural FeaturesMaterial: Generally, high-quality alloy steel (such as AISI 4140, 4145H, 4137, etc.) is used, which undergoes strict heat treatment (quenching and tempering) processes to achieve high strength, high toughness, and excellent fatigue resistance. Threads: Both ends are machined with high-precision threads that comply with API Spec 5CT, API Spec 7-1 or other customer-specified standards. The threads are precisely turned, polished and inspected. Sealing form: Metal-to-metal seal: The most common sealing form, which achieves the main seal through the interference fit of precisely machined sealing surfaces (such as conical and spherical surfaces) on the threads. It is reliable and resistant to high temperatures and high pressures. Elastic sealing rings: Some special joints add elastic sealing elements such as O-rings at the root of the threads as auxiliary seals to further enhance the airtightness. Surface treatment: The threaded parts are usually coated with an environmentally friendly anti-corrosion coating or copper-plated to prevent rusting during transportation and storage and to provide lubrication. The surface of the main body can be treated with phosphating or spraying for rust prevention.
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