A5034363980- Drilling and Well Engineering
- Mining and Gasification Technologies
- Industrial Engineering and Technologies
- Tunneling and Rock Mechanics
- Geotechnical and Geomechanical Engineering
- Reservoir Engineering and Simulation Methods
- Oil and Gas Production Techniques
- Hydraulic Fracturing and Reservoir Analysis
- Rock Mechanics and Modeling
- Concrete and Cement Materials Research
- Engineering Diagnostics and Reliability
- Coal Combustion and Slurry Processing
- Atomic and Subatomic Physics Research
- earthquake and tectonic studies
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Geophysical and Geoelectrical Methods
- Quantum Chromodynamics and Particle Interactions
- Engineering and Environmental Studies
- Earthquake Detection and Analysis
- Chemical and Physical Properties in Aqueous Solutions
- Magnetic confinement fusion research
- Astronomy and Astrophysical Research
- Advanced Cellulose Research Studies
- Building materials and conservation
Saint Petersburg Mining University
2016-2021
Admiral Ushakov State Maritime University
2018-2021
International Institute of Management Arkhangelsk
2019
Mineral Resources
2014-2017
Landau Institute for Theoretical Physics
2012-2014
Forschungszentrum Jülich
1998-2014
All-Russian Scientific-Research Institute Of Mineral Resources named after N.M. Fedorovsky
2014
Lomonosov Moscow State University
1974
The $\mathrm{pp}\ensuremath{\rightarrow}\mathrm{pp}{\ensuremath{\eta}}^{\ensuremath{'}}(958)$ reaction has been measured at the cooler synchrotron COSY J\"ulich using internal beam and COSY-11 facility. total cross sections four different excess energies $Q\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.5,1.7,2.9$, $4.1\mathrm{MeV}$ have evaluated to be...
The PAX Collaboration has successfully performed a spin-filtering experiment with protons at the COSY-ring. measurement allowed determination of spin-dependent polarizing cross section, that compares well theoretical prediction from nucleon–nucleon potential. test confirms can be adopted as method to polarize stored beam and present interpretation mechanism in terms proton–proton interaction is correct. outcome utmost importance view possible application antiprotons.
Based on the characteristics of gas hydrate bearing permafrost in western China, and application alcohols drilling fluid, performances composite alcohol fluid composed by polyethylene glycol propylene at low temperatures were comprehensively studied this paper. The results show that has a reasonable density, good low-temperature rheology, lubricity, shale hydration inhibition formation inhibition, which can effectively inhibit expansion long time, prevent from small amount free released...
Worldwide growth in hydrocarbon and energy demand is driving the oil gas companies to drill more wells complex situations such as areas with high-pressure, high-temperature conditions. As a result, recent years number of these conditions have been increased significantly. Wellbore instability one main issues during drilling operation especially for directional horizontal wells. Many researchers studied wellbore stability developed mathematical models mitigate problems before operation. In...
The paper focuses on the problems of oil and gas well cementation. It has been established that main reason why formation fluids leak behind casing is due to poor isolation annulus caused by incomplete cleaning filter cake, which results in weak or absent adhesion between cement rock. authors demonstrate adding polymer modifier GM-II spacer fluid strengthens cement-to-rock contact several times. Moreover, mixing with slurry does not degrade such important properties as spreadability...
We present an experiment to measure the spin-correlation coefficients for double-polarized deuteron-fusion in energy range of 10–100 keV determine quintet suppression factor. The setup and future upgrade plans are described. possible gain thermonuclear fusion reactors is discussed as well.
The paper considers variants of lightweight cement compositions with additives various substances, such as clay components, ash systems, silica additives, kerogen, gilsonite, microspheres, well the process slurry aeration. Recommendations on use in different conditions are presented. A decrease density solution is achieved not only due to low materials used, but also a result an increase water-cement ratio. In conditions, it possible ensure formation durable and impermeable stone well, which...
Article is devoted to creation of new compositions process solutions for lining directional wells at high temperatures. Developed provide durability characteristics cement stone. It shown that with an increase in packing density cementing slurry components and porosity permeability stone decrease, whereas temperature pressure leads a significant compressive bending durability, which associated presence quartz them.
 has been established introduction special structure-forming additives...
Summary To satisfy the growing worldwide demand in hydrocarbons and energy, more hostile oil gas fields terms of pressure temperature are under drilling development recent years. Modified technologies, materials precise planning essential requirements for successful drilling, completion such fields. Wellbore stability studies required to mitigate problems related failure rock around drilled borehole. This work aims present a thermo-poro-elastic model investigate effects elevated temperatures...
Summary Wellbore instability problems are often complicated and costly to solve may endanger the success of complete well construction process. For many years, different wellbore stability models presented study state stresses around borehole finally evaluate its or failure under given circumstances. As majority input parameters subjected errors uncertainties, therefore model output, which is minimum mud pressure required prevent from collapse, considered as an uncertain parameter. In this...
This project exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM, $\vec d$) aligned along the particle spin axis. Statistical sensitivities can approach $10^{-29}$~e$\cdot$cm. The challenge will be reduce systematic errors similar levels. adjusted preserve polarization, initially parallel velocity, times in excess of 15 minutes. Large radial fields, acting through EDM, rotate polarization ($\vec...
Abstract This article deals with the possibility of adding carbon materials to cement system. The obtained experimental results are able analyze physical and mechanical properties grouting mixtures modified graphite its derivatives. solution highly efficient well cementing fixing operations should be done by introduction chemical additives slurry. It is necessary conduct laboratory investigation respect certain geological, technical technological features mine. That why several types were...
Abstract Worldwide growing in hydrocarbon demand is driving the oil and gas companies to explore areas with more hostile conditions, such as high-pressure, high-temperature conditions. By increasing number of projects these conditions improved technology, material selection testing procedures are required overcome challenges. One main reasons, causing cement systems fail environments, concentration stresses inside wellbore induced by downhole changes temperature pressure. Therefore objective...
The high-pressure, high-temperature cement systems usually contain high concentration of solid materials to adjust their properties and meet the essential requirements these conditions. However presence limit application for construction directional wells, as speed material precipitation will increase by increasing inclination angle. In this work using experimental methods stability specially developed have been investigated. New additives applied get stable cements. Also ensure that problem...
Summary Horizontal wells is becoming a routine tool field development. Their successful drilling and completion of great importance are investigated in many research studies. Numerous problems wellbore instability reported during horizontal drilling. Therefore, complete stability analysis required before to minimize the possible failure mechanisms avoid costly workover operations. The value direction in-situ stresses one most important factors, which affects stability. In this study, effect...
The article deals with ways of rock weakening for efficiency increase hard rocks drilling, also development drilling fluid composition is considered. Aim the project to develop which increases destruction. Authors conducted experimental investigation and their main structural rheological filter characteristics. Influence various solutions, including developed one, on destruction process evaluated introduced testing bench. Investigation results indicate that characteristics positively...
The paper presents properties of the rocks according to their resistance drilling. effects differential pressure on rock drillability and changes in strength depending depth occurrence crushing conditions are examined. interlinkage between technological processes for at borehole bottom breaking stresses has been analyzed. loads deformations with account structural rate loading assessed. relevance applicability identified regularities stresses, solving practical tasks efficient course...