ACCOUNTING FOR FLUID FLOW IN DETERMINING THE PRESSURE DROP IN FORMATIONS SEPARATED BY A CLAY INTERLAYER

The article deals with the problem of determining the pressure drop in two parallel formations operated by horizontal wells. At the same time, the layers are separated by a low permeable clay partition. The problem is solved analytically by the method of Laplace and Fourier transformations. For convenient practical use, the solutions obtained are transformed into a dimensionless form. In this paper, graphs of the dependences of pressure drops in both layers on time are constructed and the analysis of the solutions obtained is carried out depending on the ratios of the permeability of the layers and the bridge. The solutions obtained can be used to estimate the pressure drop during the development of layers alternating with clay interlayer.