The invention provides a
solid polymer slow-release paraffin control ball and a preparation method and a use method thereof. The
solid polymer slow-release paraffin control ball is formed by a high-molecular
polymer, a surfactant, a density
regulator and an oil auxiliary agent through high-temperature and high-pressure blending injection molding, and paraffin
precipitation of a
wellbore pipe rod of a producing well is delayed and prevented through the combined action of the high-molecular polymer and the surfactant, the high-molecular polymer has a long-chain
alkyl structure similar to a
wax molecule, and a polar
chain link part of the high-molecular polymer enables a
wax crystal and a
crystal form to be distorted, so that the
wax crystal is prevented from continuously depositing and growing; and the surfactant is adsorbed on the wax crystal surface or the
wax precipitation surface, so that the polarity of the wax crystal surface is reversed, and the wax
control effect is achieved. Thesolid polymer slow-release paraffin control ball is periodically and quantitatively added into an oil jacket annulus from a
wellhead manually or in cooperation with automatic filling equipment, can directly reach an oil layer or a designed position, slowly and stably releases effective components in the
oil well produced liquid soaking process, prolongs the paraffin removal period, reduces the
oil well production cost, and guarantees the production efficiency and the
crude oil yield.