Dmitry Tananykhin

Saint Petersburg Mining University · Department of Petroleum Engineering

There are many technologies to implement sand control in sand-prone wells, drilled in either weakly or nonconsolidated sandstones. Technologies that are used to prevent sanding can be divided into the following groups: screens (wire-wrapped screens, slotted liners, premium screens, and mesh screens), gravel packs, chemical consolidation, and techno...

This paper investigates the deposition of asphaltenes in the porous medium of the studied field in Russia and predicts production profiles based on uncertainty evaluation. This problem can be solved by dynamic modeling, during which production profiles are estimated in two scenarios: with and without the activation of the asphaltene option. Calcula...

This paper considers a field with high-viscosity oil in a terrigenous weakly consolidated reservoir (sandstone) with a massive gas cap and an aquifer. The major challenge in the field operation is the migration of solid sand particles into the well, accompanied by a breakthrough of water and/or gas. The goal of the investigation was to evaluate the...

Sand production is one of the major issues in the development of reservoirs in poorly cemented rocks. Geomechanical modeling gives us an opportunity to calculate the reservoir stress state, a major parameter that determines the stable pressure required in the bottomhole formation zone to prevent sand production, decrease the likelihood of a well co...

Chemically enhanced oil recovery techniques have been considered efficient tertiary methods to improve the oil production from oil reservoirs regarding their compatibility with the reservoir characteristics. Moreover, gravity segregation and viscous fingering during carbon dioxide flooding would be the main problems of oil recovery techniques. In t...

The problem of scale is very common in the process of oil production at the initial and the final stages of field development. Inorganic scale may precipitate from the formation fluids in various elements of the oilfield system in the oil extraction process. These scales, which collect under certain thermodynamic and physical-technical conditions,...

This article pays attention to the issues of increasing the efficiency of the development of oil fields with low-permeable polymictic reservoirs. It is possible to increase the efficiency of this process by improving the technology of their artificial water-flooding. This goal is being realized by identifying the features of the development of low-...

A significant share of Russian oil fields has entered the final stage of development and is characterized by a drop in production. It comes true due to the depletion of active oil reserves, and, as a consequence, an increase in the proportion of residual oil trapped in areas which are not covered by flooding, and physically or chemically associated...

This paper studies the issue of optimizing the development of a reservoir with complex geological structure based on a comprehensive analysis of production logging (PLT) and well testing data. The relevance of the research topic is caused by growing share of hard-to-recover reserves assigned to lowpermeable highly heterogeneous reservoirs. The deve...

One of the fastest growing areas of the gas industry is low-tonnage LNG production, which allows to improve the efficiency of the gas distribution process due to the flexibility of the supply routes. A small number of articles devoted to this field, indicate that LNG is less attractive than pipeline gas from an economic point of view, however, such...

Nowadays more and more oil and gas fields are developed in unconsolidated sandstones. Sand production is becoming more common process and complicates the work of downhole equipment and also can lead to higher production prime cost and increase the frequency of repair works. The study of features of oil and gas fields' development in unconsolidated...

The Article Is Devoted to Solving One of the Most Important Prob. of the Oil Indust. -the High Level of Water Cut. Different Kinds of Water Shutoff Agents Were Studied in the Wk. and Its Advantages and Disadvantages Were Claimed. the Authors Proved An Actuality of the Water Inflow Limitation Prob. in Fractured and Fractured-porous Reservoirs. the L...

This study includes an environmental and social baseline of the oil sector in the region, an analysis of the potential key environmental and social issues, with which an assessment of impacts was made. The authors studied the key geological and physical parameters of productive formations. The authors found out that one of the main problems of the...

The article shows the various types of water-shutoff agents including the advantages and disadvantages of each type. Water-shutoff composition based on carboxymethylcellulose was developed to limit the water inflow in the fracture-porous type of the reservoir. Chromium acetate is used as a stitcher, copper sulfate is recommended as a densifier. The...

The authors describe the main problems and challenges facing the Russian oil industry. In particular, they present the relevance of the field development with hard-to-recover oil reserves, including abnormally viscous oil deposits, using new high-performance technologies. A review of the existing and perspective enhanced oil recovery methods, the r...

The article describes the features of the structure, the basic operational complexity of carbonate reservoirs of Tatarstan region. Thurn-Famennian complex of the Menzelinsky oilfield is studied in detail. Authors analyzed the drawbacks of applied oil recovery methods and recommended ways to overcome them. The methods of enhanced oil recovery for Th...

The authors consider the various types of water-shutoff agents including the advantages and disadvantages of each type. Water-shutoff composition based on carboxymethyl cellulose was developed to limit the water inflow in the fracture-porous type of the reservoir. Chromium acetate is used as a stitcher, copper sulfate is recommended as a densifier....

The buildup of inside wellbores is often a serious cause of energy losses, it reduce the productivity of the wells, leading to the current unplanned and costly workovers. Fight with scale in the well operation is one of the most important ways to increase the efficiency of oil production. The research results show that active organic compounds of o...

The article presents the results of experimental studies of technology of plasma-pulse impacts on the surface properties of the productive formations. Upcoming trend of research to increase overhaul period of engine driven wells is proposed. Prospect and feasibility of further research on the development of innovative technological solutions of rat...

This paper presents an overview of currently available technologies and different ways of sand consolidation. The results of laboratory studies show the increase in the strength of core samples compression up to 3,5 times, which testifies of high cementing ability of chemical compositions. The developed chemical method for consolidation of the bott...

The method and results of laboratory studies of the plasma-impulse exposure to the diffusion process of the oil soluble components of nonionogenic surfactants (NIS) into the high-viscosity oil are presented. There is a scheme of experimental bench for simulating highly-viscous oil treatment with plasma-impulse technology. The optimal concentrations...

Fight with scale in the well operation is one of the most important ways to increase the efficiency of oil production. Scale formation in the bottom hole reservoir and downhole equipment reduce their productivity, leading to the current unplanned and costly workovers. The piper describes the characteristics of the process of scaling in wells in the...

Oil complex objects have an effect on the geological environment, soil, subsurface hydrosphere and atmosphere, animal and vegetable worlds. Currently, among the sources of anthropogenic impact on the environment is isolated, primary, secondary and tertiary. The major direction of oil waste minimization is the development and implementation of evide...