Hydrate inhibitor as well as preparation method and application thereof
A technology of hydrate inhibitor and dispersant, which is applied in the field of oil and gas fields, can solve the problems of limited inhibitory effect, achieve obvious inhibitory effect, less environmental hazards, and enhance solubility
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Embodiment 1
[0022] 1. A hydrate inhibitor, consisting of the following components in weight percentage: terpolymer 10%, ether cosolvent 85%, dispersant 5%;
[0023] Wherein, the dispersant is methyl cellulose; the ether cosolvent is propylene glycol methyl ether;
[0024] The terpolymer is a terpolymer of vinylpyrrolidone, vinylcaprolactam, and isopropylene-methacrylamide, with an average molecular weight of 10000-18000g / mol;
[0025] 2. The preparation method of the hydrate inhibitor:
[0026] (1) Preparation of terpolymer: Add vinylpyrrolidone, vinylcaprolactam, isopropylene-methacrylamide and initiator to alcohol solvent according to the molar ratio of 1:1:1, pass N 2 After deoxygenation, stir and react at 85°C for 5h, after cooling to room temperature, stand in an oven at 40°C for 3h, filter, wash the filter residue with water for 3 times, and dry to constant weight in a vacuum oven to obtain vinylpyrrolidone , vinyl caprolactam, terpolymer of isopropylene-methacrylamide; wherein, t...
Embodiment 2
[0030] 1. A hydrate inhibitor, consisting of the following components by weight percentage: terpolymer 50%, ether cosolvent 49%, dispersant 1%;
[0031] Wherein, the dispersant is sodium carboxymethyl cellulose; the ether cosolvent is propylene glycol ether;
[0032] The terpolymer is a terpolymer prepared from vinylpyrrolidone, vinylcaprolactam, and isopropylene-methacrylamide, with an average molecular weight of 10000-18000g / mol;
[0033] 2. The preparation method of the hydrate inhibitor:
[0034] (1) Preparation of terpolymer: Add vinylpyrrolidone, vinylcaprolactam, isopropylene-methacrylamide and initiator to alcohol solvent according to the molar ratio of 1:85:10, pass N 2 After deoxygenation, stirred and reacted at 40°C for 16h, cooled to room temperature, stood still in an oven at 50°C for 2h, filtered, washed the filter residue with water for 3 times, and dried to constant weight in a vacuum oven to obtain vinylpyrrolidone , vinyl caprolactam, terpolymer of isopropy...
Embodiment 3
[0038] 1. A hydrate inhibitor, consisting of the following components by weight percentage: terpolymer 15%, ether cosolvent 55%, dispersant 30%;
[0039] Wherein, the dispersant is hydroxyethyl cellulose; the ether cosolvent is propylene glycol butyl ether;
[0040] The terpolymer is a terpolymer prepared from vinylpyrrolidone, vinylcaprolactam, and isopropylene-methacrylamide, with an average molecular weight of 10000-18000g / mol;
[0041] 2. The preparation method of the hydrate inhibitor:
[0042] (1) Preparation of terpolymer: Add vinylpyrrolidone, vinylcaprolactam, isopropylene-methacrylamide and initiator to alcohol solvent according to the molar ratio of 25:85:10, and pass N 2 After deoxygenation, stir and react at 85°C for 5h, after cooling to room temperature, stand in an oven at 40°C for 3h, filter, wash the filter residue with water for 3 times, and dry to constant weight in a vacuum oven to obtain vinylpyrrolidone , vinyl caprolactam, terpolymer of isopropylene-me...
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