Geochemical Criteria for Assessing Prospects for Oil and Gas Bearing Capacity of Pliocene Sediments

Authors: Deryaev A

DOI: 10.23880/ppej-16000401

Volume 8, Issue 4

Abstract

Studies are based on the identification of gas distribution patterns in Pliocene sediments that were obtained from perforated wells. These studies include analyses of various forms of gases: free, associated (dissolved in oil) and water-dissolved. This integrated approach allows for a more accurate determination of gas accumulations and their characteristics within the study areas. The main direction of our research is a detailed study and analysis of gas composition, which allows us to identify dependencies and regularities of their distribution in Pliocene-age rocks. Using data on free gases, associated gases dissolved in oil, and water-soluble gases, we aim not only to determine their concentration, but also to understand the conditions of their formation and accumulation. This includes the study of gas migration processes, their interaction with surrounding rocks and fluids, and the influence of geological factors such as tectonics and lithology on the distribution of hydrocarbon gases. Another area of our research is based on the identification of productive and water-bearing targets in the study of uncased wellbores using geophysical methods. In particular, we use integrated methods of geophysical well testing (GWT) and open formation tests (OPT), which allow us to obtain detailed information on the fluid saturation of formations and their productive characteristics.

Keywords: Geochemical Criteria; Rocks; Pliocene Sediments; Physical and Chemical Parameters; Geophysical Well Testing; Formation Tests

View PDF