Acidizing corrosion inhibitor applicable to high temperature of 140 to 160 DEG C, and preparation and application thereof
A technology of acidizing corrosion inhibitor and high temperature, applied in chemical instruments and methods, production fluids, wellbore/well components, etc., can solve the problems of easy coking, corrosion inhibitor damage, decline in corrosion inhibition effect, etc., and achieve a simple production process. , good surface activity, low freezing point effect
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[0061] Example 1: A corrosion inhibitor suitable for high temperature acidification at 140°C, the weight percentage of component A is:
[0062] Polycyclic aromatic hydrocarbon chloromethyl pyridine quaternary ammonium salt: 30%;
[0063] 3-methyl-1-pentyn-3-ol: 0.6%;
[0064] Glyoxal: 0.1%;
[0065] Dimethylformamide: 2%;
[0066] Hydroxyethyl cellulose: 0.5%;
[0067] Emulsifier OPE-20: 15%;
[0068] Methanol; 51.8%.
[0069] The weight percentage of component B is:
[0070] Potassium antimony tartrate: 15%;
[0071] Bismuth oxide: 15%;
[0072] Vitamin C: 10%;
[0073] 1+1 hydrochloric acid: 60%.
[0074] The ingredients used when used consist of 3 parts by weight of A liquid and 1 part by weight of B liquid.
[0075] The preparation method is:
[0076] The preparation method of component A is:
[0077] Add 50% methanol to the enamel reactor in proportion, slowly increase the temperature to 55~60℃, add hydroxyethyl cellulose under constant stirring, stir until all the hydroxyethyl cellulose is c...
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[0080] Example 2: A corrosion inhibitor suitable for high temperature acidification at 140°C, the weight percentage of component A is:
[0081] Polycyclic aromatic hydrocarbon chloromethyl pyridine quaternary ammonium salt: 31%;
[0082] 3-methyl-1-pentyn-3-ol: 0.5%;
[0083] Glyoxal: 0.15%;
[0084] Dimethylformamide: 3%;
[0085] Hydroxyethyl cellulose: 1%;
[0086] Emulsifier OPE-20: 15.5%;
[0087] Methanol; 48.85%.
[0088] The weight percentage of component B is:
[0089] Potassium antimony tartrate: 16%;
[0090] Bismuth oxide: 14%;
[0091] Vitamin C: 11%;
[0092] 1+1 hydrochloric acid: 59%.
[0093] The ingredients used when used consist of 3 parts by weight of A liquid and 1 part by weight of B liquid.
[0094] Example 2 A preparation method suitable for 140°C high temperature acidification corrosion inhibitor is the same as Example 1.
Example Embodiment
[0095] Example 3: A corrosion inhibitor suitable for high temperature acidification at 150°C, the weight percentage of component A is:
[0096] Polycyclic aromatic hydrocarbon chloromethyl pyridine quaternary ammonium salt: 33%;
[0097] 3-methyl-1-pentyn-3-ol: 0.4%;
[0098] Glyoxal: 0.2%;
[0099] Dimethylformamide: 4%;
[0100] Hydroxyethyl cellulose: 1.5%;
[0101] Emulsifier OPE-20: 16%;
[0102] Methanol; 44.9%.
[0103] The weight percentage of component B is:
[0104] Potassium antimony tartrate: 17%;
[0105] Bismuth oxide: 13%;
[0106] Vitamin C: 13%;
[0107] 1+1 hydrochloric acid: 57%.
[0108] The ingredients used when used consist of 2.5 parts by weight of A liquid and 1 part by weight of B liquid.
[0109] Example 3 A preparation method suitable for 150°C high temperature acidification corrosion inhibitor is the same as that of Example 1.
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