A preparation method of a heavy oil viscosity-reducing and production-increasing agent, a heavy oil viscosity-reducing and production-increasing agent and its application
A technology for reducing viscosity and heavy oil, applied in chemical instruments and methods, production fluids, earthwork drilling, etc. Simple preparation method
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Embodiment 1
[0041] The viscosity-reducing and recovery-increasing agent for heavy oil provided by the present embodiment is obtained through the following steps:
[0042] In the reactor, add 20kg of water, then add 10kg of lignin, and stir to obtain an aqueous lignin solution;
[0043] Add 0.5 kg of 95 mass % sulfuric acid and 0.5 kg of 60 mass % nitric acid to the above lignin aqueous solution, and stir and react at 100° C. for 2 h;
[0044] Then add 1kg of diol and 1kg of acetaldehyde, and continue to react for 2h under stirring at 100°C;
[0045] Then continue to add 1kg of sodium hydroxide and 0.5kg of sodium carbonate, stir evenly, then add 1kg of ethylenediamine, and continue to react at 100°C for 2h;
[0046] Cool to 60°C, continue to add 1 kg of fatty alcohol polyoxyethylene alcohol sodium sulfate, 0.5 kg of fatty alcohol polyoxyethylene ether and 0.5 kg of fatty acid potassium, and continue stirring for 2 hours.
[0047] The obtained self-emulsifying viscosity-reducing and reco...
Embodiment 2
[0050] The viscosity-reducing and recovery-increasing agent for heavy oil provided by the present embodiment is obtained through the following steps:
[0051] In the reactor, add 20kg of water, then add 10kg of lignin, and stir to obtain an aqueous lignin solution;
[0052] To the above lignin aqueous solution, 0.5 kg of 95 mass % sulfuric acid and 0.5 kg of 60 mass % nitric acid were added, and the reaction was stirred at 100° C. for 2 h;
[0053] Then add 1kg of diol and 1kg of acetaldehyde, and continue to react for 2h under stirring at 100°C;
[0054] Then continue to add 1kg sodium hydroxide and 0.5kg sodium carbonate, stir evenly;
[0055] Cool to 60°C, continue to add 1 kg of fatty alcohol polyoxyethylene alcohol sodium sulfate, 0.5 kg of fatty alcohol polyoxyethylene ether and 0.5 kg of fatty acid potassium, continue to stir for 2 hours, and after cooling, the heavy oil self-emulsifying viscosity reducing and recovery enhancing agent is obtained.
[0056] The obtaine...
Embodiment 3
[0058] The viscosity-reducing and recovery-increasing agent for heavy oil provided by the present embodiment is obtained through the following steps:
[0059] In the reactor, add 20kg of water, then add 10kg of lignin, and stir to obtain an aqueous lignin solution;
[0060] To the above lignin aqueous solution, 0.5 kg of 95 mass % sulfuric acid and 0.5 kg of 60 mass % nitric acid were added, and the reaction was stirred at 100° C. for 2 h;
[0061] Then continue to add 1kg of sodium hydroxide and 0.5kg of sodium carbonate, stir evenly, then add 1kg of ethylenediamine, and continue to react at 100°C for 2h;
[0062] Cool to 60°C, continue to add 1 kg of fatty alcohol polyoxyethylene alcohol sodium sulfate, 0.5 kg of fatty alcohol polyoxyethylene ether and 0.5 kg of fatty acid potassium, continue to stir for 2 hours, and after cooling, the heavy oil self-emulsifying viscosity reducing and recovery enhancing agent is obtained.
[0063] The obtained self-emulsifying viscosity-red...
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