Analysis and prospects for the development of indicator (tracer) methods for studying oil and gas reservoirs

Abstract

Rapid development of the methodology for conducting and interpreting the results of tracer studies, which requires systematization of data. At present, indicator studies are practically the only non-alternative method that allows one to objectively evaluate real hydrodynamic connections between wells from a physical point of view. The importance of the information obtained as a result of interpreting the tracer studies lies in its reliability and unambiguity, which can significantly reduce uncertainties regarding fluid filtration paths, the presence of heterogeneity and peculiar features of hydrodynamic connectivity in productive formations. Aim. To create a set of systematical recommendations on the methodology for conducting and interpreting the results of tracer studies when developing oil and gas fields. Methods. The paper analyzes technologies for conducting and interpreting tracer tests using such methods as the Stationary Tracer Source, including Single Well Chemical Tracer Tests, Partitioning Inter-Well Tracer Test, as well as Inter-Well Tracer Test. Results and conclusions. As a result of the analysis of tracer methods for studying reservoir layers of oil and gas fields, the authors have classified the substances used as indicators, and carried out a comparison of the main goals achieved with the help of indicator studies in accordance with the object of study and the research method. The paper describes the strong and weak features of conducting and processing the results of the analyzed tracer research methods. The paper introduces the prospects for the development of indicator research methods, primarily related to the development of new types of tracers and methods for interpreting results.