Multifunctional cleaning agent for oil fields, preparation method therefor and applications thereof
A multi-functional, cleaning agent technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of short operation cycle, serious and high cost
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Embodiment 1
[0043] Dirt containing only grease, wax and / or heavy grease:
[0044] 1. Preparation of composite nonylphenol polyoxyethylene ether surfactant: mix nonylphenol polyoxyethylene (7) ether and nonylphenol polyoxyethylene (15) ether in a weight ratio of 1:1.
[0045] 2. Prepare compound quaternary ammonium salt cationic surfactant chloride: mix homogeneously with dodecyl trimethyl ammonium chloride and hexadecyl dimethyl benzyl ammonium chloride in a weight ratio of 1:1.
[0046] 3. Prepare grease, wax and (or) heavy grease cleaner: first add water about 1 / 2 of its volume to a 1000-liter enamel reaction kettle, and gradually add 1.0% of the compound nonane prepared in 1. Base phenol polyoxyethylene ether nonionic surfactant, add water to the reaction kettle to 2 / 3 of its volume after adding, stir evenly, measure the pH value of the mixed solution, slowly add the prepared in 2. 1.0% compound quaternary ammonium salt cationic surfactant chloride, finally add water to 1000 liters, s...
Embodiment 2
[0049] The scale contains both CaCO 3 Inorganic chemical scales such as oil scales, wax scales and (or) heavy oil scales and other organic scales:
[0050] 1. Preparation of composite nonylphenol polyoxyethylene ether surfactant: mix nonylphenol polyoxyethylene (9) ether and nonylphenol polyoxyethylene (10) ether in a weight ratio of 1:1.
[0051] 2. Prepare compound quaternary ammonium salt cationic surfactant chloride: mix uniformly with dodecyl dimethyl benzyl ammonium chloride and tetradecyl dimethyl benzyl ammonium chloride in a weight ratio of 1:1.
[0052] 3. Preparation of composite pickling corrosion inhibitor: mix propynyl alcohol and cyclohexylamine in a weight ratio of 1:1 evenly.
[0053] 4. Preparation of composite Fe ion chelating agent: add powdery citric acid into slurry triethanolamine and mix evenly, and measure the pH of the mixture to be 7.
[0054] 5. Preparation of inorganic chemical scale (CaCO 3 etc.) and mixed dirt cleaning agents such as oil dirt,...
Embodiment 3
[0057] CaCO 3 Inorganic chemical scales such as oil scales, wax scales and (or) heavy oil scales and other organic scales:
[0058] 1. Preparation of composite nonylphenol polyoxyethylene ether surfactant: mix nonylphenol polyoxyethylene (9) ether and nonylphenol polyoxyethylene (15) ether in a weight ratio of 1:1.
[0059] 2. Prepare compound quaternary ammonium salt cationic surfactant chloride: dodecyl dimethyl benzyl ammonium chloride and hexadecyl dimethyl benzyl ammonium chloride are mixed uniformly in a weight ratio of 1:1.
[0060] 3. Preparation of composite pickling corrosion inhibitor: mix propynyl alcohol and cyclohexylamine in a weight ratio of 1:1 evenly.
[0061] 4. Preparation of composite Fe ion chelating agent: add powdery citric acid into slurry triethanolamine and mix evenly, and measure the pH of the mixture to be 7.
[0062] 5. Preparation of inorganic chemical scale (CaCO 3 etc.) and mixed dirt cleaning agent such as oil dirt, wax dirt and (or) heavy ...
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