| 摘要 |
FIELD: mining.SUBSTANCE: claimed equipment comprises the production string and the assembly with sliding coupling. The latter included the pipe section with recess and bore as well as pipe coupling made to slide in the recess. The seal is fitted at the coupling outer surface, Note here that said recess houses the flow control valve.EFFECT: higher efficiency and higher reliability of well fluid flow control.8 cl, 6 dwg |
