FIELD: oil and gas industry.
SUBSTANCE: invention relates to the oil-producing industry, namely, namely to the tubing joint (tubing), and can be used for the installation of a tubing in oil and gas wells. Tubing joint includes pipes with external tapered threads at the ends, a tapered-threaded coupling on both sides and a sealing collar placed between the ends of the pipes. Sealing collar is made with equally spaced screw rows of through slits providing a change in its size in the axial direction when the thread is tightened.
EFFECT: high reliability, thread protection against abrasive solids.
1 cl, 2 dwg
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