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A technology of wax remover and emulsifier, which is applied in the field of wax remover and its preparation, can solve the problems of unsuitable oil, low relative density, poor fluidity, etc., and achieve the improvement of unusable difficulties, good solubility, and lower freezing point Effect
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Problems solved by technology
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Problems solved by technology
Its disadvantages are: low relative density, not suitable for oil with high water content, low ignition point, easy to catch fire, strict fire prevention measures must be taken when using
Its disadvantage is that it is slow to take effect when added to oil wells; although the freezing point of water-based wax remover and anti-wax agent can reach -20°C, its fluidity is very poor when used in severe winter
Method used
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Examples
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Comparison scheme
Effect test
Embodiment 1
[0012] A wax remover, characterized in that its composition (weight ratio) includes 25% alcohol ether, 12% fatty alcohol polyoxyethylene ether, 0.2% alkali content, 15% antifreeze, 10% ethylene glycol, emulsification Agent 30%. The emulsifier is a mixture of compound vinegar of oleic acid, linoleic acid and resin and triethanolamine. The antifreeze is composed of propylene glycol butyl ether and ethylene glycol butyl ether acetate, and the weight ratio is 30%:70%. The base is potassium hydroxide.
Embodiment 2
[0014] A wax remover, characterized in that its composition (weight ratio) includes 20% alcohol ether, 10% fatty alcohol polyoxyethylene ether, 0.25% alkali content, 15% antifreeze, 10% ethylene glycol, emulsification Agent 40%. The emulsifier is a mixture of compound vinegar of oleic acid, linoleic acid and resin and triethanolamine. The antifreeze is composed of propylene glycol butyl ether and ethylene glycol butyl ether acetate, and the weight ratio is 40%:60%. The base is sodium hydroxide.
Embodiment 3
[0016] A wax removal agent, characterized in that its composition (weight ratio) includes 25% alcohol ether, 8% fatty alcohol polyoxyethylene ether, 0.25% alkali content, 12% antifreeze, 10% ethylene glycol, emulsification Agent 40%. Further, the emulsifier is a mixture of a compound vinegar of oleic acid, linoleic acid and resin and triethanolamine, and the antifreeze is composed of propylene glycol butyl ether and ethylene glycol butyl ether acetate, and the weight ratio is 50%:50 %. The base is potassium hydroxide.
[0017] The above examples are prepared by the following method:
[0018] Add alkali to fatty alcohol polyoxyethylene ether to generate surfactant, add it to alcohol ether and stir, stir for 30min, stirring speed 250r / min, and then add antifreeze, ethylene glycol, emulsifier in sequence to get clear Wax agent. The performance of the prepared wax remover showed excellent performance, as shown in the following table:
[0019] Performance index of wax remover
[0020]...
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Abstract
The invention provides a paraffin remover and a preparation method thereof. The paraffin remover comprises the following components (in percentage by weight): 15%-25% of alcohol ether, 7%-12% of fatty alcohol-polyoxyethylene ether, 0.15%-0.25% of alkali, 13%-15% of antifreezing fluids, 5%-10% of ethylene glycol and 30%-40% of emulsifying agents, wherein the emulsifying agent is a mixture of oleic acid, linoleic acid, composite vinegar of resin and triethanolamine, the antifreezing fluids comprise propylene glycol butyl ether acetate and ethylene glycol butyl ether acetate, and the alkali is any one of sodium hydroxide or potassium hydroxide. The preparation method of the paraffin remover comprises the following steps: adding the alkali to the fatty alcohol-polyoxyethylene ether to generate a surface active agent; adding the surface active agent to alcohol ether, and stirring under the condition of normal temperature and pressure; and then sequentially adding the antifreezing fluids, the ethylene glycol and the emulsifying agents so as to obtain the paraffin remover. The paraffin remover provided by the invention has the advantages of safety in use, low possibility in ignition and low solidifying point and meets the requirement for usage under the condition of extreme cold.
Description
Technical field [0001] The invention belongs to the field of oil field chemistry application, and specifically relates to a wax removing agent and a preparation method thereof. Background technique [0002] Wax usually exists in a liquid state under formation conditions. However, during the mining process, as the temperature and pressure drop and the light components continue to escape, the wax in the crude oil will gradually precipitate and deposit around the borehole wall and in the production casing, causing damage to the reservoir and restricting the normal production of the oilfield. . According to reports in the literature, most of my country's exploited oil fields are rich in wax, which is more than 20%, and some even 40%. Therefore, oil well wax removal is a very important technical measure to ensure the normal production of waxy crude oil. [0003] Commonly used oil well wax removal technologies in oil fields mainly include mechanical wax removal technology, thermal wax ...
Claims
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