A preparation method of polymer gelling agent for high temperature and high salt profile control and water plugging
A profile control water plugging and polymer technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problem of macromolecule retention damage in reservoir channels, groundwater pollution by heavy metal ions, thermal stability of chromium gel In order to achieve the effect of smooth granulation and drying process, improve temperature and salt resistance and thermal stability, and strong resistance to high temperature and high salt
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Embodiment 1
[0027] Add acrylamide crystals to the batching container, add deionized water to fully dissolve, then add 2-acrylamido-2-methylpropanesulfonic acid, methacrylamide, N-tert-butylacrylamide to fully dissolve, and then add The pH is adjusted to 7.5 by adding ion-exchange membrane liquid caustic soda with a concentration of 32wt%. Lower the temperature of the prepared material to 8°C and move it into the polymerization reactor, add the emulsion additive first when blowing nitrogen to drive oxygen to 30 minutes, add 5% modification additive when blowing nitrogen to 35 minutes, and blow nitrogen to 40 minutes Add 1% potassium persulfate and 1% sodium bisulfite successively to initiate the reaction at 8°C, continue to pass nitrogen for 5 minutes, stop and seal, conduct adiabatic polymerization for 4 hours, and keep warm for 2 hours after rising to the highest temperature Get glue. Take out the rubber block, cut and granulate, take 300g of the rubber particle and add 1.5g of stabiliz...
Embodiment 2
[0030] Add acrylamide crystals to the batching container, add deionized water to fully dissolve, then add 2-acrylamido-2-methylpropanesulfonic acid, methacrylamide, N-tert-butylacrylamide to fully dissolve, and then add The pH is adjusted to 7 by adding ion-exchange membrane liquid caustic soda with a concentration of 32wt%. Lower the temperature of the prepared material to 5°C and move it into the polymerization reactor, add the emulsion additive first when blowing nitrogen to drive oxygen to 30 minutes, add 5% modification additive when blowing nitrogen to 35 minutes, and blow nitrogen to 40 minutes Add 1% potassium persulfate and 1% sodium bisulfite successively to initiate the reaction at 9°C, continue to pass nitrogen for 5 minutes, stop and seal, conduct adiabatic polymerization for 5 hours, and keep warm for 2 hours after rising to the highest temperature Get glue. Take out the rubber block, cut and granulate, take 300g of the rubber particle and add 3g of stabilizer t...
Embodiment 3
[0033] Add acrylamide crystals to the batching container, add deionized water to fully dissolve, then add 2-acrylamido-2-methylpropanesulfonic acid, methacrylamide, N-tert-butylacrylamide to fully dissolve, and then add The pH was adjusted to 8 by adding ion-exchange membrane liquid caustic soda with a concentration of 32wt%. Lower the temperature of the prepared material to 7°C and move it into the polymerization reactor, add the emulsion additive first when blowing nitrogen to drive oxygen to 30 minutes, add 5% modification additive when blowing nitrogen to 35 minutes, and blow nitrogen to 40 minutes Add 1% potassium persulfate and 1% sodium bisulfite successively to initiate the reaction at 10°C, continue to pass nitrogen for 5 minutes, stop and seal, conduct adiabatic polymerization for 6 hours, and keep warm for 2 hours after rising to the highest temperature Get glue. Take out the rubber block, cut and granulate, take 300g of the rubber particle and add 2.4g of stabiliz...
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