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viewsPremium casing is a special connection that provides a gas-tight seal and 100% connection efficiency in severe well conditions. These conditions include high pressure, typically greater than 5,000 psi.
some examples of premium casing:
JST premium connection casing and tubing: Widely applied in various gas well, oil well, and thermal recovery well
USS-LIBERTY TC Premium OCTG Connections: Ideal for surface casing applications and intermediate offshore strings
API Buttress Thread: Casing (BTC) connection resists jumpout and offers relatively high joint strengths
Premium casing connectors are designed and tested to ensure compatibility with the pipe's strength and capacities. Premium threaded and coupled connections use metal-to-metal seals to ensure both liquid and gas sealability. Most use proprietary thread forms to enhance both the tension and compression efficiencies.