METHOD AND DEVICE FOR PREVENTION OF RESIN-PARAFFIN DEPOSITS IN TUBING OF WELLS EQUIPPED WITH SUCKER-ROD PUMPS

摘要

FIELD: oil drilling practice. SUBSTANCE: cylindrical chamber installed in upper part of sucker rod string is connected by gland rod with pumping jack. Chamber has the form of plunger with spring-loaded return valve positioned above inlet holes. Outlet holes are located in upper end portion of cylindrical chamber. EFFECT: improved functional and operating characteristics. 2 cl, 1 dwg