ANALYSIS OF THE RESULTS OF THE YuS2 FORMATION INTERFERENCE TEST IN THE VISHNEVSKOE OIL FIELD

Abstract

The relevance of the study is caused by the need to conduct and interpret hydrodynamic studies of wells, in particular, interference testing, for the design of field development. Interference test allows clarifying the features of the formation structure, the presence or absence of a hydrodynamic relation between wells, as well as increasing the accuracy of determining the filtration characteristics of the formation. The main aim of the research is using the results of well test analysis identify the mode of operation of the disturbing wells, which makes it possible to identify the signal in the reacting well without shutting it down, and calculate the filtration characteristics of the formation. Objects: YuS2 formation of the Vishnevskoe field. Methods: interference design in the Kappa-Workstation (module Saphir) software package; field research on the possibility of determining the pressure pulse in the reacting wells; interpretation of the results of well test in the Kappa software package. Results. The paper introduces the results of hydrodynamic studies of wells in two regions of the YuS2 formation of the Vishnevskoe oil field by well testing. The influence of various factors on the quality of studies is considered, the permeability, piezo- and hydraulic conductivity in the area of reacting wells are calculated. In the first region of the formation, an injection well was used as a disturbing well. During the study, two cycles of shutdown and subsequent start-up of the injection well were implemented. As a result of the interpretation of the studies, the filtration characteristics of the reservoir were calculated, the values of which are consistent with the data of petrophysical studies. For the second of the considered regions, modeling was performed in order to determine the possibility of implementing well test study without stopping the reacting well. Based on the simulation results of the well survey, it was concluded that to determine the effect of injection (disturbing) wells on production (reacting) wells, shutdown of the reacting wells is not required. In this case, it is necessary to stop only disturbing wells. Three disturbing and one reacting wells were involved in this well test. The results of the studies made it possible to identify the mode of operation of the disturbing wells, which makes it possible to identify the signal in the reacting well without shutting it down. An interpretation of the studies was made, based on the results of which the filtration parameters of the reservoir were calculated.

Keywords

• interference test
• hydrodynamic studies
• thermomanometric systems
• hydrodynamic modeling
• disturbing well
• reacting well