MODELING OF HORIZONTAL OIL WELL OPERATION IN THE STRATIFIED BED

Abstract

The problem of inflow to the horizontal perforated hole of the oil well in the stationary mode is considered. This problem is solved using the point flow function. A system of equations describing the process of oil inflow in the stratified bed to the horizontal well and the oil movement in the horizontal perforated hole was received. A combined solution of the obtained equations system enables to calculate the profile of inflow to the horizontal hole, the pressure drop in the hole and the increase of velocity of the developing stream through the hole depending on geological and physical parameters of each interlayer, the well path, the arrangement of perforation intervals and other parameters. An example is shown of calculation of horizontal oil well with three perforation intervals located in differently permeable interlayers. The inflow profile change at increasing the density of perforations placement in different perforation intervals is shown.