A Kind of Novel Chemical Plugging Removal Technology Study for Polymer Flooding Wells

Aiming at plugging removal issues of polymer flooding well, first of all, the mechanism of formation plugging is analyzed, and then, we discuss the reasons of bottom borehole block in polymer water flooding well and block laws. Finally, some typical indoor experiments are designed, during testing; some chemicals are tested, such as CJN-x, sodium nitrite, sodium sulfite etc. are tested. Through these experiments, these different effect of materials reducing viscosity is compared, among them, the CJN-1x and hydrogen peroxide possess better effect of plugging removal for polymer flooding wells.