A kind of cross-linked polymer oil displacing agent synthesized by teramine and its preparation method
An oil displacing agent and a cross-linked technology, which is applied in the field of partially branched and partially cross-linked polymer oil displacing agents and their preparation, and can solve the problems of regulating permeability, unfavorable heterogeneous formations, poor adaptability of heterogeneous formations, etc. , to achieve the effects of good elasticity and shear resistance, good suspension performance, and efficient profile adjustment
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Embodiment 1
[0048] (1) Preparation of solution
[0049] Dissolve 100 parts of acrylamide in 180 parts of deionized water to make a solution, dissolve 0.104 parts of pentamethyldiethylenetriamine in 40 parts of deionized water to make a solution, and dissolve 0.05 parts of potassium persulfate in 50 parts of deionized water. Deionized water is made into a solution, and 0.03 parts of sodium bisulfite is dissolved in 30 parts of deionized water to make a solution;
[0050] (2) Preparation of oil displacement agent by polymerization reaction
[0051] Add the acrylamide solution and the pentamethyldiethylenetriamine solution prepared in step (1) into the reactor in sequence, and remove the oxygen in the reactor and the reaction solution by passing nitrogen at a temperature of 12°C for 15 minutes while stirring, and then add in sequence Potassium persulfate solution and sodium bisulfite solution initiate the polymerization reaction. After the reaction is polymerized until the viscosity of the ...
Embodiment 2
[0055] (1) Preparation of solution
[0056] Dissolve 100 parts of acrylamide in 180 parts of deionized water to make a solution, dissolve 0.025 parts of pentamethyldiethylenetriamine in 40 parts of deionized water to make a solution, and dissolve 0.05 parts of potassium persulfate in 50 parts of deionized water. Make a solution in deionized water, and dissolve 0.05 parts of sodium bisulfite in 50 parts of deionized water to make a solution;
[0057] (2) Preparation of oil displacement agent by polymerization reaction
[0058] Add the acrylamide solution and the pentamethyldiethylenetriamine solution prepared in step (1) into the reactor in sequence, and remove the oxygen in the reactor and the reaction solution by passing nitrogen at a temperature of 12°C for 15 minutes while stirring, and then add in sequence Potassium persulfate solution and sodium bisulfite solution initiate the polymerization reaction. After the reaction is polymerized until the viscosity of the system in...
Embodiment 3
[0062] (1) Preparation of solution
[0063] Dissolve 100 parts of acrylamide in 180 parts of deionized water to make a solution, dissolve 0.073 parts of pentamethyldiethylenetriamine in 40 parts of deionized water to make a solution, and dissolve 0.05 parts of potassium persulfate in 50 parts of deionized water. Make a solution in deionized water, and dissolve 0.04 parts of sodium bisulfite in 50 parts of deionized water to make a solution;
[0064] (2) Preparation of oil displacement agent by polymerization reaction
[0065] Add the acrylamide solution and the pentamethyldiethylenetriamine solution prepared in step (1) into the reactor in sequence, and remove the oxygen in the reactor and the reaction solution by passing nitrogen at a temperature of 12°C for 15 minutes while stirring, and then add in sequence Potassium persulfate solution and sodium bisulfite solution initiate the polymerization reaction. After the reaction is polymerized until the viscosity of the system in...
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