Formula, preparation method of solid corrosion inhibitor and its using method
A corrosion inhibitor and solid technology, applied in the direction of mining fluid, earthwork drilling, wellbore/well parts, etc., can solve the problems of difficult to reach the bottom of the well, inconvenient operation, large dosage, etc., to increase crude oil production and anti-corrosion efficiency High and prolong oil recovery effect
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[0024] Formulation example, the solid corrosion inhibitor of the present invention is prepared from the following raw materials with a weight ratio: a certain dibasic acid, 34%; diethylenetriamine, 12%; chloroacetic acid, 10%; dodecyl Sodium benzenesulfonate, 10%; hexamethylenetetramine, 8%; hydrolyzed polymaleic anhydride (HPMA), 8%; polyepoxysuccinic acid, 8%; epoxy resin, 4%; polyamide resin, 4%.
[0025] The specific preparation method embodiment of the present invention adopts the formula in the formula embodiment and includes the following steps:
[0026] A. Synthesis of intermediates: Put a certain dibasic acid in the reaction tank, turn on the heater, and stir while heating. When the temperature reaches 150°C, add diethylenetriamine and stir continuously. The temperature is kept for 130 minutes, and the temperature is raised to React at 200°C for 4 hours at a constant temperature. Stop heating, cool to 80°C, add chloroacetic acid dropwise, react for 1.5 hours, and finally ...
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