Mechanism And Experiment Of Scale Control, Paraffin Control And Corrosion Control By Electrochemical Method

Scale,wax deposition and corrosion affect severely the normal production of oil field.Now we always use chemical method on scale control, paraffin control and corrosion control.But the cost is high and the craft is complex, moreover which can create the second pollutions to the oil reservoir,and they can only keep efficient a short time.In order to decrease the times of workover and reduse the cost of workover and decrease the second pollutions,we should study on the technology of scale control, paraffin control and corrosion control by electrochemical method.The technology is effective because of the catalytic treatment of highly active metal.And when the fluid including paraffin flows through the electrical double layers on the metal surface,the paraffin will happen molecular fracture and won't aggregate together. The paper analyses the mechanism of the chemical method on scale control, paraffin control and corrosion control. The paper introduces some components of alloys and electrochemical performance.And it has made out of the alloys used in experiment and measure the electrochemical performance of the alloys. Some experiments about scale control are made in the lab.The experiments validate the effects of scale prevention.The experiments use weight gain method.In the experiments we can prove that the electrochemical method of scale control is effective by observing the different scale grains under the microscope. Experimental study of scale prevention by electrochemical method has shown that the functions of electrochemical method can effectively hold over and prevent the occurrence of scaling buildup. Pilot tests of paraffin control by electrochemical method have verified that the paraffin control by electrochemical method is feasible. Electrochemical method providing a new way for preventing scaling in oil production with physical field means.