In the context of high hydrocarbon price volatility on the global market and worsening resource structure an increasingly greater attention is paid to the search of effective and economically sound tools for production and exploitation process management and control, including in horizontal and directional wells. Traditional approaches to horizontal well surveys by PLT using CT come with low industrial safety of work performance, high cost and, therefore, limitation in wide use. One of the alternative approaches is to use well marker monitoring system enabling to obtain unlimited information about inflow profile and composition along a horizontal well without interventions on a long-term basis. This paper describes an approach of placing the marker monitoring systems as a part of completions and carrying out 3-phase monitoring for oil, water and gas, including off-shore project conditions.

During the well operation, it is important to monitor the current state of production on an ongoing basis, identify water or gas breakthroughs, analyze the reservoir depletion, and predict the well operation parameters. Production logging is a key stage of the efficient field development management. This paper presents for the first time the results of the three-phase well surveillance on the North Caspian shelf. The specific features of the wells being studied are the presence of a motherbore and sidetracks as well as a multi-phase flow. The purpose of the studies was to acquire information on the actual inflow profile distribution and its composition, borehole contribution ratio, as well as water and gas breakthroughs in the boreholes of the wells in question based on the results of the long-term production surveillance using the innovative technology – markers for the oil, water and gas inflow. The collected data improve the quality of technological decision-making, which further contributes to enhanced hydrocarbon recovery and reduces operating costs. The paper presents the accumulated experience in conducting the studies of horizontal and multilateral wells at the North Caspian offshore fields.

The article analyzes the reason and factors of declining in key indicators of quality and efficiency of well construction and operation, which have led to a long-term stagnation in drilling technology. To handle the urgent issues, a systematic approach to implement the complex of hydro-mechanical hardening of an open-hole well by the synchronous and coordinated action of hydraulic monitoring strings of drilling fluids is proposed. The indicators of quality and efficiency of the complex compared to the traditional ones, which exceed the former by two or more times, are provided.

The results of forest regeneration studies on pine felling were described, the sample of the architectural and planning of the territory was ordered in the article.

Studies described in this paper were aimed at solving a set of problems related to selection, technological justification and design of enhanced oil recovery. Theoretical and laboratory studies of remaining reserves production were conducted, as well as prediction of their efficiency if applied to formation of Las Eganskoye oilfield.