Heavy oil reservoir profile control and viscosity reduction integral foam agent and preparation method thereof
A heavy oil reservoir and foaming agent technology, which is applied in the field of foaming agents, can solve problems such as inability to use, and achieve the effects of high foam strength, improved temperature resistance, and good flexibility
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Embodiment 1
[0026] (1) Add 1 mol of decylphenol polyoxyethylene ether and 20 mol of pyridine into a four-neck flask equipped with a thermometer, a reflux condenser, and a stirrer, and heat while stirring. The stirring rate is 300 rpm, and the heating temperature is 45°C; Next, 1.1 mol of thionyl chloride was slowly added dropwise into a four-neck flask with a constant pressure dropping funnel at a rate of 5 drops / min. After stirring for 2 hours, it was lowered to room temperature. The mixed solution was poured into a beaker, and 10% NaOH solution was added. Neutralize the pH of the solution to 7, add ethanol to extract 3 times after cooling, wash the extract once with 3% acetic acid, then wash twice with distilled water, finally remove the solvent with a rotary evaporator, and put it in an oven at 100°C After drying for 24 hours, chlorodecylphenol polyoxyethylene ether was obtained.
[0027] (2) Put the above-mentioned chlorodecylphenol polyoxyethylene ether in a high-pressure reactor, ad...
Embodiment 2
[0031] (1) Add 1 mol of cetylphenol ethoxylate and 25 mol of pyridine into a four-neck flask equipped with a thermometer, reflux condenser, and stirrer, and heat while stirring. The stirring rate is 420rpm, and the heating temperature is 55°C ; Next, slowly drop 1.2mol thionyl chloride into a four-neck flask with a constant pressure dropping funnel at a rate of 5 drops / min, stir for 2 hours and drop to room temperature, pour the mixture into a beaker, and add 10% NaOH solution , neutralize the pH of the solution to 7, add ethanol to extract 4 times after cooling, wash the extract with 3% acetic acid for 2 times, then wash with distilled water for 2 times, and finally remove the solvent with a rotary evaporator, and put it in a 105°C oven Drying in medium for 35h to obtain chlorinated hexadecylphenol polyoxyethylene ether.
[0032] (2) Put the above chlorinated hexadecylphenol polyoxyethylene ether in a high-pressure reactor, add 1.3mol potassium sulfite and 30mol water, heat u...
Embodiment 3
[0037](1) Add 1 mol of eicosylphenol ethoxylate and 30 mol of pyridine into a four-necked flask equipped with a thermometer, a reflux condenser, and a stirrer, and heat while stirring. The stirring rate is 500 rpm, and the heating temperature is 65°C ; Next, slowly drop 1.5 mol of thionyl chloride into a four-necked flask with a constant pressure dropping funnel at a rate of 5 drops / min, stir for 3 hours and drop to room temperature, pour the mixed solution into a beaker, and add 10% NaOH solution , neutralize the pH of the solution to 8, add ethanol to extract 5 times after cooling, wash the extract 2 times with 3% acetic acid, then wash 3 times with distilled water, finally remove the solvent with a rotary evaporator, and put it in a 120°C oven Drying in medium for 48h to obtain chlorinated eicosylphenol polyoxyethylene ether.
[0038] (2) Put the above-mentioned chlorinated eicosylphenol polyoxyethylene ether in a high-pressure reactor, add 1.6mol potassium sulfite and 60mo...
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