RESEARCHING ON THE REASONS OF CROSS-COLUMN SHOWS IN OIL AND GAS WELLS
Was made the analysis of known technological reasons of emersion of channels when cementing wells in cross-column space. With the help of computer modeling were graphically researched the hydraulic processes of cementing wells. The calculation method determined the conditions for the qualitative replacement of drilling mud with cement during the formation of the borehole. Has been calculated that during the exploitation of the well, the wellbore, because of the thermobaric processes flowing in the production column and annulus casing, experiences significant loads, which leads to the appearance of channels in the cemented production casing. The results of these studies will help for better understanding of the nature of annulus casing channels and take measures to prevent it when building and exploitation wells.