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The float collar is a key tool in oil drilling cementing operations, installed at the lower part of the casing string to control the flow of cement slurry, prevent backflow, and ensure the quality of cementing.

Float shoes are key tools in petroleum drilling cementing operations, installed at the very bottom of the casing string. They serve the dual functions of guiding the casing downward and preventing backflow during cementing, making them one of the core components ensuring cementing quality.

The thermal compensator is a key tool in oil drilling and completion operations, mainly used to compensate for the tensile and compressive stresses caused by temperature changes in the tubing string, preventing buckling, fracture, or sealing failure of the casing or tubing under high temperature and high pressure conditions, thereby ensuring the structural integrity of the wellbore.

Casing couplings and tubing couplings are core connectors in petroleum drilling, completion, and production strings. They are used for threaded connections of casings or tubing of the same specifications, ensuring the sealing, strength, and continuity of the string, and are key guarantees of wellbore structural integrity.

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