The Experiment Study Of Magnetization-Vibration For Increasing Injection Rate

The porosity channel of low permeable or ultra-low permeable reservoir is very small compared with the high permeable reservoir; the flow velocity will be greatly reduced at the same pressure gradient. So it can not meet the demand of increasing injection rate in oilfield by using conventional methods such as fracturing and acidification, and there is a certain degree of pollution. Aiming at this practical situation, on the basis of magnetization, vibration stimulation mechanism of our predecessors, combining these two kinds of actual applied circumstances on the spot, the author imitated the stratum with the artificial core indoors, imitated the formation water with the mineralized water, and imitated the downhole vibrator with electromagnetic valve, then carried out the contrast experiment under non-increasing injection rate function, vibration function and combined function of the hydraulic vibration and magnetization to discuss the feasibility of combined utilization of vibration and magnetization.A large number of experimental data show that frequency vibration can be used as a short-term quick method of increasing injection rate; the effect is particularly prominent in large displacement and low frequency. The magnetic effect in the short term is not obvious, so the magnetized time should be increased in the course of the experiment, which can help magnetic effect playing fully. The combined function of the vibration and magnetization has strong complementarily of time and theory, which can maintain the continuity of increasing injection rate.