METHOD FOR ASSEMBLY OF TRAVEL LIMITERS ON PUMPING ROD FOR PARAFFIN-REMOVING CENTERING SCRAPERS

摘要

FIELD: oil production industry. SUBSTANCE: according to method, integral metal bushes preliminarily manufactured from metal which is more plastic than pumping rod metal are slipped over pumping rod at interference fit at points of scraper travel limit. After that, each of bushes are seated over entire length in two symmetrical half-dies for compression in cold state by force of 40-50 tf with squeezing out excessive metal until creation of two diametrically opposite shoulders. Thus produced limiters can endure shear force equal to 1.5 tf. EFFECT: higher efficiency. 1 cl, 3 dwg