ASSESSMENT OF THE INFLUENCE OF ABNORMALLY HIGH RESERVOIR PRESSURE ON THE DEVELOPMENT OF OIL AND GAS FIELDS

Abstract

From the results, it is known that due to the deformation of the volume of rocks during the drilling process, the depth change intensity of the horizontal (radial and azimuthal) components of the tension manifested in the well walls, the inhomogeneity of the rock massif structure, and the density of the drilling clay solution are complicated by the influence of anomalously high layer pressure. However, the bottom pressure created by the clay solution to the drill selected according to the anomalously high layer pressure zone balances the side pressure created by them in the well walls by adjusting the horizontal stresses. Due to the effect of anomalous high layer pressure, a dec- rease in azimuthal tension is observed, and as a result, the permeability of productive collectors inc- reases, the percolation area expands due to the washing of clay particles entering the conduction zo- ne in the area around the well, and liquid flow to the well occurs. The characteristics of the change in anomalously high reservoir pressure in the rock massif of the study area, as well as the development of local processes occurring due to the disruption of the natural stress field in the wellbore zone, their nonlinear nature, their interaction characteristics, the large number of parameters regulating these processes, and the new geotectonic stress field formed on the well walls have their impact on the migration and development of fluid in various geological conditions. Therefore, the great role of anomalously high reservoir pressure in the migration, accumulation, formation and develop- ment of hydrocarbons makes it necessary to take it into account in the exploration and evaluation of oil and gas fields, as well as in the efficient implementation of well drilling operations there.