Assessing Efficiency of Multiwell Retrospective Testing MRT in Analysis of Cross-Well Interference and Prediction of Formation and Bottom- Hole Pressure Dynamics

The paper describes the first use of Multiwell Retrospective Test (MRT) on the Devonian formation of the Romashkinskoye oil field. The paper introduces the technology of MRT and describes the advantages in determining the interference of wells and formation pressure (4-7). The field case cited in the article describes a specific implementation of an MRT, called "radial deconvolution," in which the central (tested) well is equipped with a bottomhole pressure gauge. As a result, the interference of the offset injection and production wells to the tested well is estimated, as well as the properties of the well and reservoir, taking into account the interference with the offset wells. One of the advantages of this technology is the ability to estimate formation pressure without shutting the well. In this research, a comparative test was performed, in which the reservoir pressure predicted by MRT was checked with a field test.