DEVELOPING THE LABORATORY STAND FOR SIMULATION AND WORK SETTINGS RESEARCH OF HYDRODYNAMIC WELL GENERATOR VALVE

Abstract

Impact on the near-well and remote reservoir areas by wave methods are becoming more common in the practice of drilling and well operations, both in Russia and abroad. The most effective and positive impact on the near-well formation zone (NWFZ) has elastic vibrations of the low frequency range. Such fluctuations in the designated frequency range provide vibro-wave method of influence on NWFZ. Vibro-wave impact is implemented by different constructions of hydrodynamic well generators (HWG) which use hydraulic power of the pumped into the well process liquid for its work. The design of laboratory stand (Figure 1) and the procedure for researches on it has been developed for determining the flow rate regime areas of HWG and the degree of influence of various constructional parameters of HWG on their flow rate regime areas. The construction and operating principle of the multi-purpose laboratory stand has been described in this paper. The stand allows to research the work settings of the new devices, as well as comparative tests of existing down hole equipment up to modern level with digital recording results to the personal computer. The method for determining the parameters of the hydrodynamic pulses of hydrodynamic well generators has been proposed. The investigations of identifying areas of flow rates of the hydrodynamic well generator are presented. During the conducted studies it’s established that the amplitudes of the pressure oscillations generated by HWG tend to increase with increasing fluid pressure. The intensity of this increase is determined by the flow rate of the working fluid passing through the HWG. During bench tests there is a conclusion that the increase of the amplitudes of pressure oscillations can be characterized by a tangent function of the approximating line slope.