Detailed mapping at a scale of 1:10 000 of an area around the head of the Kangerdluarssuk fjord in the southern half of the Ilimaussaq intrusion was made. The purpose of this was to map accurately the relations of naujaite inclusions in the lujavrites. During the work it became clear that a detailed study of the transitions between the lujavrites and kakortokites was of much greater importance. The reader is referred to Ferguson (1970, p. 338) for a summary of the previous ideas about the origin of the lujavrites.

During the 1971 field work mapplng at the scale of 1: 10 000 was continued in the area of Kangerdluarssuk fjord (see Demin, 1971). The most important field observations arising from the mapping are interpreted below. These notes should be viewed in the light of the earlier work on naujaite and lujavrites in the Ilimaussaq intrusion (see references in the text and Ferguson, 1970).

For decades, computer simulation has been an inevitable part of hydrocarbon reservoir development. 3D reservoir models of productive reservoirs and gathering system pipeline models exist for almost all operated fields. The recent concept of digital oilfield relies much upon performing computer simulation in order to automate the development process. Operational field development management is one of the processes that can be automated within this concept. However, conventional computer simulation techniques based on the above-mentioned 3D reservoir models are ill-suited for automation of operational development management. This can be attributed to the fact that creating, history matching, updating, and calculations of such integrated models are very time-consuming. Integrated models based on simplified models of productive reservoirs can be regarded as a basic means of operational field management. A case in point are models built on material balance equations. However, this approach has its drawbacks. The main problem lies in having to do double the work. One has to have two models for each productive reservoir: one model for operational development management (simplified model) and the other for conventional modeling (3D reservoir model). This paper considers solving the stated problem by transforming a conventional 3D reservoir model of a productive reservoir into a material balance model and provides comparative analysis of both modeling approaches.

Relevance In the process of developing the technology for manufacturing and operating multilayer large-sized objects used in aviation, shipbuilding, railway transport, chemical engineering, automotive and many other industries (for example, multilayer large-sized shells, main pipelines, etc.), there arises the need for operational continuous non-destructive testing of structures large areas to determine the thickness and continuity of the connection of layers with subsequent refinement of the identified defects parameters. Aim of research Development of the theory and means for diagnosing of multilayer large-sized objects technical condition to increase the reliability of their diagnostics results. Research methods To achieve the aim, analytical methods for studying the electromagnetic field, the theory of differential and integral calculus, numerical and computer modeling using software tools were used. Results A mathematical model of the electromagnetic field distribution in the multilayer structure of multilayer large-sized objects, as well as an original control device for multilayer large-sized objects, which allows continuous monitoring of their technical condition, have been developed.

Для оценки техногенной безопасности используется показатель риска аварии. Установлено, что риск-ориентированное техническое диагностирование достигло того уровня развития, которое в полной мере обеспечивает реальное использование его при оценке техногенной безопасности технических объектов.