Highly- tight threaded joint
作者： Anna Pshelenskaj , Viacheslav Osiko , Yurii Danileiko , Sergei Frolov , Viktor Salyuk
DOI:
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摘要: The invention relates to building oil and gas wells can be used in casing strings tubings. inventive highly-tight screw joint comprises internal external mating elements with conical surfaces. are provided a thread. Said thread has supporting embedded faces. A sealing unit is made the form of wedge on side small diameter. elements. consists parts formed by radial stop face at an angle 25°-35° normal axis. surface 10°-25° makes it possible increase reliability, tightness strength joint, ease assembly disassembly thereof, improve abrasion resistance extend service life thereof.
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