Development of theoretical-calculated technology for estimation of sustainability of breeds of horizontal steam

Abstract

In this paper we analyze the reasons for the disturbance of the stability of the borehole rocks of the horizontal section of the wells. For this purpose, a mechanical and mathematical model of rock loading has been developed in the near-bottomhole zone of the horizontal section of the borehole. For the uniqueness of the solution, the equations of motion, physical relationships and deformation compatibility equations are included in the mathematical model of the problem under consideration, and the boundary conditions are determined taking into account the loads according to the mechanical model of deformation behavior. The mathematical model of the problem of the deformational behavior of the rocks in the near-bottomholewell zone has been solved by a finite-difference method, for which a special calculation procedure has been developed. Based on the obtained solutions, the damage to the rocks of the near-horizontal zone of the wellborehole under different loading modifications is evaluated