Improvement of oil field development using enhanced oil recovery methods

Abstract

Purpose. To develop a technology to increase the oil recovery of formations using injection of polymer compositions. Methodology. For this study, practical methods were used such as enhanced oil recovery using stimulating technologies, technology using polymer systems based on a water-soluble polymer acrylamide, and emulsion-polymer technology. To achieve the conformance control, which was a prerequisite for testing, a thorough selection of wells was carried out, as well as an analysis of their hydrodynamic connection. Findings. As a result of using the method for limiting water inflows in the development of oil-bearing formations, redistribution of filtration channels, and a decrease in the production of fossil water as well as stabilisation of water cut were achieved. Originality. The scientific novelty of the study is the withdrawal of wells that are able to redistribute the volume of water injection at perforation intervals. Increased sweep efficiency and pressure at the wellhead at the beginning and at the end of the conformance control indicate a decrease in the conductivity of high-permeability formation intervals. Practical value. Application of the proposed technology for limiting water inflows will make it possible to develop low-permeability interlayers with filtration flows. The wells brought to a stable production rate during the study will ensure a decrease in formation water production and the water cut of the produced products, as well as stabilisation of the water cut over a certain period.

Digital Simulation of Open-Pit Mining Organisation System

“…By utilizing digital mining technology processes, it is possible to create a digital twin of the enterprise. This allows for the integration of various tasks, such as mining design and planning, safety management through equipment dispatching, and personnel movement, all in a single virtual space [24].…”

Improving a geophysical method to determine the boundaries of ore-bearing rocks considering certain tectonic disturbances

“…Ore seismic exploration is classified as a wide-range method used both in regional studies and while solving multi-scale problems of structural control of ore deposits in geological environments being more complex than the ones studied by traditional seismic exploration during oil prospecting [41]- [44].…”

Geological structure and oil-and-gas occurrence of Prorva group of the Southern deposits of the Caspian Depression in terms of geophysical information

“…In this area, carbonates of subsalt Palaeozoic were exposed within Yuzhnoe elevations; the results were negative. Nevertheless, the available geological and geophysical data speak for the necessity of the detailed analysis to forecast oiland-gas occurrence potential of subsalt Palaeozoic within the area [18,19].…”