Increasing the filtration characteristics of rocks in areas of high temperatures

Authors

DOI:

https://doi.org/10.15587/2706-5448.2022.264134

Keywords:

production characteristics of wells, hydrocarbon recovery factor, solution of chemical compositions, carbonate and terrigenous reservoirs

Abstract

One of the important problems of the oil and gas industry is the decrease in the production characteristics of wells in fields that are at the final stage of development. In addition, the drop in well production below their potential and the decrease in hydrocarbon recovery factors are often due to the deterioration of the reservoir properties of rocks in the process of drilling in productive formations, well workover, as well as the imperfection of production processes and means of their implementation.

The object of research is the technology of treatment of the bottomhole formation zone with non-acidic systems based on ammonium salts for the intensification of hydrocarbon production.

The paper considers a number of methods that allow solving the above problems, taking into account their complexity, efficiency and duration of the positive effect of processing. The main acid methods of influencing the bottomhole formation zone and their modifications are analyzed. The authors, using the results of the research and experience gained, proposed a non-acidic system of chemical treatment of oil and gas wells based on ammonium salts. Their influence on the rocks occurs more long-term and does not lead to the destruction of reservoirs.

During the research, physical, chemical, physicochemical methods and techniques developed by the authors for processing and analyzing field data, statistical methods for processing experimental studies were used. Modeling of deep processes was carried out on the installation developed and created by the authors.

The mechanism of interaction of ammonium salt solutions with terrigenous and carbonate rocks is revealed. Experimental studies have confirmed and theoretically substantiated the effectiveness of the use of ammonium salts to improve the filtration characteristics of reservoirs.

The effect of ammonium salt solutions on the change in the permeability of sandy and carbonate reservoirs in the Dnipro-Donetsk depression (DDD, Ukraine) has been studied. And also a mathematical model of the process of increasing the permeability of rocks during their dissolution by the studied chemical reagents was created. The mathematical model is available for its wide application in the practice of technological calculations and designing measures for the stimulation of oil and gas production.

Author Biographies

Yuliia Kovalchuk, Kyiv National University of Construction and Architecture

PhD, Associate Professor

Department of Chemistry

Viktor Svitlytskyi, Odessa National Technological University

Doctor of Technical Sciences, Professor

Department of Oil and Gas Technologies, Engineering and Heat Power Engineering

Olga Ivankiv, LLC «Research and Production Center Actual Oil and Gas Technologies»

PhD, Technical Director

Valentin Shinkarenko, Poltava V. G. Korolenko National Pedagogical University

PhD

Department of Chemistry and Methods of Teaching Chemistry

Irуna Boshkova, Odessa National Technological University

Doctor of Technical Sciences, Professor

Department of Oil and Gas Technologies, Engineering and Heat Power Engineering

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Published

2022-08-31

How to Cite

Kovalchuk, Y., Svitlytskyi, V., Ivankiv, O., Shinkarenko, V., & Boshkova, I. (2022). Increasing the filtration characteristics of rocks in areas of high temperatures. Technology Audit and Production Reserves, 4(3(66), 16–23. https://doi.org/10.15587/2706-5448.2022.264134

Issue

Vol. 4 No. 3(66) (2022): Chemical engineering

Section

Chemical and Technological Systems: Reports on Research Projects

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Copyright (c) 2022 Yuliia Kovalchuk, Viktor Svitlytskyi, Olga Ivankiv, Valentin Shinkarenko, Irуna Boshkova

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