The book “Oil industry chemistry . H. I”, published by the team of authors, is an important work that immerses the reader in the complex and multifaceted world of the oil industry. This publication will become an indispensable assistant for students, graduate students, specialists and anyone interested in the chemical processes occurring in oil fields. In the first part of the book, the authors consider in detail the main aspects of oil field chemistry, including the composition and properties of oil, as well as methods of its processing. Readers will be able to learn about how different chemical reactions affect the quality and quantity of hydrocarbon produced. The book also highlights the importance of studying chemical processes to optimize the operation of oil fields and improve production efficiency. This book will be especially interesting for those who are fond of chemistry, geology, energy and ecology. Students of technical and environmental specialties will find in it a lot of useful information that will help them in their studies and future professional activities. Experts in the oil industry will be able to use this publication as a guide that will help them understand the complex chemical processes occurring in their work. The topics raised in the book cover a wide range of issues, ranging from the basics of petrochemistry to modern methods of oil quality analysis and control. The authors pay attention to both traditional and innovative approaches in the field of oil field chemistry, which makes the book relevant for studying current trends in this field. Readers will be able to learn about new technologies that help minimize the negative impact on the environment, as well as how to properly manage resources to achieve sustainable development. The style of the authors is distinguished by scientific rigor, but at the same time the availability of presentation. They strive to bring complex concepts to a wide audience, which makes the book understandable even for those who are just beginning to get acquainted with oil field chemistry. This publication is not only informative, but also fascinating, thanks to many examples from practice and current research. The book “Oil industry chemistry . H. I" is the first part of a larger project to be continued in the following volumes. This creates intrigue and anticipation among readers who will be able to delve deeper into the study of this topic. It is important to note that the team of authors includes recognized experts in their field, which guarantees the high quality of the material presented. If you are looking for literature on oil field chemistry that combines scientific rigor and practical applicability, then this edition will be an excellent choice. It can be useful not only for professional chemists and engineers, but also for anyone interested in energy resources, their extraction and processing. In conclusion, “Oil industry chemistry . H. I" is not just a book, but a whole world of knowledge that will open doors for you to one of the most important and dynamically developing industries of our time. Do not miss the opportunity to immerse yourself in an exciting journey through the world of petroleum chemistry and learn about how science helps solve practical problems in this area.