▎ 摘　　要

NOVELTY - A polymer-based elastomer plugging agent comprises 50-60 %mass polymer elastomer matrix material, 1-2 %mass initiator, 0-20 %mass reinforced polymer elastomer material, 10-30 %mass reinforcing material and 10-20 %mass functional filler. The initiator is photoinitiator or thermal initiator. USE - Polymer-based elastomer plugging agent for drilling fluid. ADVANTAGE - The method can effectively solve the problem of low plugging success rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of polymer-based elastomer plugging agent, which involves mixing the raw materials, melting and processing using twin-screw extruder, extruding and granulating. When the initiator is photoinitiator, it is irradiated for 25-35 minutes under the light of 250-420 nm wavelength. The specific wavelength value is determined according to the maximum absorption wavelength of different photoinitiators.