The first phase of subcycle AC12 formation on the example of the southern part of the Priobskoye field is considered. The job is done based on 3d seismic and geological model complexing with the using log interpretation. The erosion zone that violates the original structure of the upper part of the deep-sea clay pack III of akhskaya formation by paleochannels was revealed. These erosions form lithologic traps, isolated from the top productive reservoirs of subcycle AC12.

This article is concerned with the application experience of cutting-edge technology for surface and downhole well testing equipment which is used while well test operations and hydrodynamic well study. The results of operations and equipment performance are presented as well as recommendations on technology application at offshore and onshore projects.

Tyumen formation is a formation with very considerably lateral heterogeneity. It influences on process of exploration oil and gas traps. No one can deny that seismic survey is a main method for prediction lateral heterogeneity. Nowadays, geoscientists can model different useful seismic attributes, apart from structural maps. Seismic inversion is most effective tool for transformation amplitude seismic data into elastic properties. However, sometimes result of seismic inversion is very hard to understand and analyze. In this work, authors will show additional methods for better understanding results of seismic inversion using Impedance Poisson. Area of research is located in the Western Siberia.

The state of the mineral resource base of hydrocarbons in recent years has been characterized by a decrease in proven reserves and extremely low rates of their reproduction. In Western Siberia, as in other oil-bearing provinces of Russia, economically profitable oil reserves are decreasing. It is obvious that the development of the fuel and energy complex is becoming more focused on the development of hard-to-recover reserves, which account for almost 2/3 of the proven oil reserves. Technologies for the extraction of such raw materials are characterized by higher capital costs, which requires the search for new ways to increase the profitability of projects. One of these areas is the extraction of metals from the associated water of oil and gas fields. In this paper, the possibility of using the technology for extracting lithium from the associated waters of the Orenburg oil and gas condensate field is evaluated, and the boundary conditions for the implementation of this technology are determined.

The paper considers a new engineering analytical tool for express oil reserves assessment. Proposed method is based on classifying oil reserves by complexity – reservoir complexity index (RCI). It allows to optimize the development system and form a well interventions program.
The method is suggested to use three main parameters for development complexity estimation: reservoir permeability, start watercut (which contains the parameters of the curve of relative permeability, saturation and viscosity) and geological heterogeneity (pattern efficiency).
An economic estimation of the well profitability is carried out by calculating PV UDC indicator (unit development cost, CAPEX / total oil production). The advantages of this indicator is that it allows to determine the economic attractiveness and does not require macro parameters and costs for the building well pads
Due to the economic assessment and well ranking, it is possible to obtain profitable well pads and select candidates for sidetracking.
The novelty of the work lies in the use of an updated methodology for the reservoir complexity index estimation for the remaining recoverable reserves classification.
As a result, high-quality tool is created that integrates RCI and economic model. It is aimed for solving reservoir engineering problems and increasing the project cost
The proposed method can be applied to other fields with minor modifications.

The paper presents the results of laboratory studies of polymer-surfactant flooding on core samples of different permeability. The obtained data are used in hydrodynamic modeling.
Experimental studies included:
• study of the dynamics of oil displacement, plotting the dependence of the residual oil saturation on the surfactant concentration – interfacial tension at the interface of the surfactant-oil solution;
• comparative experimental studies of residual oil saturation when oil is displaced by surfactant compositions of various manufacturers;
• comparative studies of phase permeability in flood experiments for the filtration of oil and water, oil and polymer-surfactant solution at different ratios in the flow.

The results of acid tunneling on carbonate reservoirs of the Orenburg region for the increase of drainage area are considered. Weaknesses of the technology are considered, ways to improve efficiency are proposed. The technology made it possible to obtain stable increments of oil production at pilot wells.

The ESP reliability analysis was conducted to determine the correlation between ESP operation mode and ESP component reliability. The analysis was based on operation data of more than 700 ESP. The reliability of operating mode-dependent ESP components was analyzed. ESP and seal section test results under cyclic and constant operation conditions were shown. As a result, it was determined that periodic operation negatively affect ESP components lifetime. Recommendations for ESP cyclic operation were proposed.

The paper presents an analysis of the terms “energy efficiency” and “energy conservation” in relation to oil production. The consumption of fuel and energy resources of an oil and gas company is increasing from year to year, and taking into account the growth of tariffs for energy resources, the introduction of energy-efficient technologies is one of the urgent problems of production.

The article provides an analysis of shale oil production and artificial lift equipment world market for choosing the optimal method for oil production from the Bazhenov formation. The result of the analysis is the identification of prospective complexes of artificial lift (wellhead and downhole) equipment that meet the following conditions:
• artificial lift equipment is used in operating conditions that are similar to those, which planned for the Bazhenov formation development: for wells with a long horizontal wellbore and multi-stage hydraulic fracturing; conditions similar to the Bazhenov formation in terms of the depth of the deposit, production volumes (production curve, initial flow rates, gas-oil ratio (GOR), reservoir temperature, etc ).;
• the properties of the produced fluid are similar to the Bazhenov formation reservoir fluid (light oil, GOR increase over production time, water cut drop over time, etc.
Analysis includes wellhead equipment, downhole equipment, and control stations for wellhead and downhole equipment.
Based on the analysis results, the main selection criteria are given, a comparative analysis of the main types of artificial lift equipment is carried out, and promising types of artificial lift for oil production from the Bazhenov formation are identified.

The article proposes solving way the problem of reduction in the expenditure on the permanent construction of oil and gas fields using systems engineering methods. There is shown system engineering ability to reduce permanent construction costs. The text considered an example of systems engineering using the conceptual design stage for the location of a well cluster.

The article substantiates the need to perform additional experimental studies of reservoir fluids, the results of which are used as input data for the implementation of oil field development projects. The methods of experimental research used in «Giprotyumenneftegaz» are briefly described and their main features are described.

This article reflects the main points of the influence of light hydrocarbons on the physicochemical composition and properties of marketable oil of the Novy Port oil and gas condensate field, describes the uncertainties that should be taken into account by the time gas reserves are involved. For a specific task, the risks of influencing the key indicator according to GOST R – 51858-2002 (saturated vapor pressure) were removed. For the first time, a shift of the critical point of paraffin formation has been revealed. The result of the work will be the predicted behavior of the fluid when gas reserves are involved, as well as a decrease in energy consumption for heating the pipeline of external transport, an increase in the cleanup period, a decrease in the specific energy consumption (specific energy consumption) of pumping equipment, as a result – a decrease in operating costs.

At the oil production wells of Gazpromneft Vostok LLC, with the problem of scale formation, there was made an assessment of the possibility of using an encapsulated scale inhibitor. According to the test results, it’s found that the reagent provides effective protection of production wells from salt deposits. There are noted such a positive aspects of this inhibitory protection technology as the absence of corrosive effects on downhole equipment, the possibility of quick organization of well protection, not using metering equipment, independence from the infrastructure and the convenience of loading capsules during workover. A comparative analysis with the classical inhibitor protection with liquid scale inhibitors has been carried out. It is shown that with a water flow rate of up to 38 m3 / day, the use of encapsulated reagents is more cost effective. The limitations of the application of the technology are noted – the difficulty in carrying out additional loading of the reagent into the well without lifting the downhole equipment, application in horizontal and directional wells.

The purpose of research is to propose a model contained integrated approach. It allows realizing synthesis of Christmas tree well (X-Tree) elements through attribute description based on engineering survey and reservoir data.