Smirnov A. Substantiation of parameters the electrobit method of wells for demudding

The dissertation is devoted to a substantiation of parameters o electrodischarge method for well demudding, which increase the efficiency of clearing well bottom zone from a different sort of sediments and expansions and also for amplification the area of effective application of electrodischarge method for well demudding. By means of the mathematical model, developed in this work, researches of parameters influence of modes of electrodischarge influence on behaviour of viscous sediments have been executed. It has been established that it is necessary to fill in a well by oil or water-oil emulsion before electrodischarge treatment. On the basis of results of experimental researches of parameters influence of modes of an electrodischarge method the recommendation for carry out electrodischarge treatment of wells on a mode with optimum value of interelectrode interval have been given, which provides maximal amplitude of pressure wave. Experimental researches of elements of the electrodischarge device (electrode system and a high-voltage discharger have been executed. Their results have allowed to expand borders of effective application of electrodischarge method for well demudding, to increase a resource of elements of the electrodischarge device and efficiency of well treatment. By means of this results it has been chosen the material of shell of the closed electrode system - rubber pressure sleeve and the conditions effective application under hydrostatic pressure in a well more than 1,8 МPа. The research of a high-voltage discharger has allowed to establish the reasons of instability of its work and to offer a procedure of tuning it stable. Industrial trials of electrodischarge method for well demudding on four oil wells of Ukrainian oilfield have shown, that the oil yield had been increased in 2-4 times after electrodischarge treatment.