| 摘要 |
FIELD: mining.SUBSTANCE: invention relates to repair of wells, specifically to elements of a downhole tool. Element of downhole tool for extraction of hydrocarbon resources comprises a molded body of resin based on polyglycolic acid blended with an inorganic or organic short-fibre reinforcing material. Material has a characteristic rate of decrease of thickness when held in water at 120 °C, including reducing thickness of initial rate to a maximum value of 0.8 for a molded body only from resin of polyglycolic acid, and also having a final thickness reduction rate greater than 1.5 times initial rate of decrease of thickness.EFFECT: technical result is to obtain a temporary element of a downhole tool for repair of wells and technique for calculating mechanical strength of degradable polymer.7 cl, 5 dwg, 1 tbl, 9 ex |
