Acidizing corrosion inhibitor applicable to high temperature of 120 to 140 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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[0056] Example 1:
[0057] A kind of corrosion inhibitor suitable for high temperature acidification at 120℃, the weight percentage of component A is:
[0058] Polycyclic aromatic hydrocarbon chloromethyl pyridine quaternary ammonium salt: 25%;
[0059] 3-methyl-1-pentyn-3-ol: 0.6%;
[0060] Triethanolamine: 2%;
[0061] Flat plus OS-15: 12%;
[0062] Cetyltrimethylammonium chloride: 5%;
[0063] Methanol: 55.4%.
[0064] The weight percentage of component B is:
[0065] Potassium iodide: 18%;
[0066] Cuprous chloride: 3%;
[0067] Bismuth oxide: 25%;
[0068] 1+1 hydrochloric acid: 54%.
[0069] The ingredient composition during use is 1 part by weight of A liquid and 0.3 parts by weight of B liquid.
[0070] The preparation method is:
[0071] The preparation method of component A is:
[0072] First, add the polycyclic aromatic hydrocarbon chloromethyl compound pyridine quaternary ammonium salt, 3-methyl-1-pentyn-3-ol, and Pingping OS-15 into the enamel reactor in proportion. Slowly increase t...
Example Embodiment
[0075] Example 2: A corrosion inhibitor suitable for high temperature acidification at 120°C, the weight percentage of component A is:
[0076] Polycyclic aromatic hydrocarbon chloromethyl pyridine quaternary ammonium salt: 26%;
[0077] 3-methyl-1-pentyn-3-ol: 0.5%;
[0078] Triethanolamine: 3%;
[0079] Flat plus OS-15: 13%;
[0080] Cetyltrimethylammonium chloride: 6%;
[0081] Methanol: 51.5%.
[0082] The weight percentage of component B is:
[0083] Potassium iodide: 16%;
[0084] Cuprous chloride: 2%;
[0085] Bismuth oxide: 30%;
[0086] 1+1 hydrochloric acid: 52%.
[0087] The ingredient composition during use is 1 part by weight of A liquid and 0.3 parts by weight of B liquid.
[0088] Example 2 A preparation method suitable for 120°C high temperature acidification corrosion inhibitor is the same as Example 1.
Example Embodiment
[0089] Example 3: A corrosion inhibitor suitable for high temperature acidification at 130°C, the weight percentage of component A is:
[0090] Polycyclic aromatic hydrocarbon chloromethyl pyridine quaternary ammonium salt: 27%;
[0091] 3-methyl-1-pentyn-3-ol: 0.4%;
[0092] Triethanolamine: 4%;
[0093] Flat plus OS-15: 13%;
[0094] Cetyl-octadecyltrimethylammonium chloride: 7%;
[0095] Methanol: 48.6%.
[0096] The weight percentage of component B is:
[0097] Potassium iodide: 14%;
[0098] Cuprous chloride: 1%;
[0099] Bismuth oxide: 35%;
[0100] 1+1 hydrochloric acid: 50%.
[0101] The ingredient composition when used is 1 part by weight of A liquid and 0.5 parts by weight of B liquid.
[0102] Example 3 A preparation method suitable for 130°C high temperature acidification corrosion inhibitor is the same as Example 1.
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