METHOD FOR DETERMINATION OF HYDRO-BREAK PRESSURE OF HERMETIC CONTACT ZONE OF CEMENT STONE AND TESTING CHAMBER WALLS AND INSTALLATION FOR IMPLEMENTING SUCH METHOD

摘要

The object of the group of inventions is a method for determination of the hydro-break pressure of a hermetic contact zone of cement stone and testing chamber walls and an installation for implementation of this method. The sphere of use of the method and installation is oil and gas industry. The method includes locating the cement stone in the testing chamber (3), supply of the fluid to the testing chamber (3) by hydraulic pump (2), gradual increase of pressure, visual observation of the fluid outflow from the testing chamber and observation of the pressure change. Before gradual increase of fluid pressure from the testing chamber the air is blown off. The observation of the pressure change and control of hydraulic pump operation is performed with the help of the information processing device (6). By the data received and processed by this device the approximated curve of pressure change through time is plotted. The hydro-break pressure is determined by the point of outlet of the plotted curve to plateau, averaging out the data of not less than two consequentially conducted researches.