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Research Output 2012 2019

  • 4 Citations
  • 1 h-Index
  • 30 Article
  • 15 Conference contribution
  • 2 Conference article
2019
Oil wells
oil well
Phase diagrams
Oils
acoustics
Open Access
rockburst
acoustics
monitoring system
monitoring
inverse problem
2018

Algorithm of modeling of acoustic monitoring of composite hierarchical inclusions

Hachay, O., Khachay, A. & Hachay, O., 1 Jan 2018, 17th International Conference on Geoinformatics - Theoretical and Applied Aspects. European Association of Geoscientists and Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Acoustics
Monitoring
Composite materials
Rocks
Integrodifferential equations

Asymptotics of a Solution of a Three-Dimensional Nonlinear Wave Equation near a Butterfly Catastrophe Point

Khachai, O. Y., 1 Jul 2018, In : Proceedings of the Steklov Institute of Mathematics. 301, p. 72-87 16 p.

Research output: Contribution to journalArticleResearchpeer-review

Catastrophe
Nonlinear Wave Equation
Asymptotic Expansion
Three-dimensional
Ordinary differential equation

Catastrophe theory - One of the basic components in the analysis of the seismic response of rock mass to explosions

Khachay, O. A. & Khachay, O., 28 Mar 2018, In : IOP Conference Series: Earth and Environmental Science. 134, 1, 012026.

Research output: Contribution to journalConference articleResearchpeer-review

catastrophe theory
seismic response
explosion
rock
accident prevention

Modeling algorithm of acoustic waves penetrating through a medium with composite hierarchical inclusions

Hachay, O. A., Khachay, Y. A. & Khachay, Y. O., 19 Dec 2018, Mechanics, Resource and Diagnostics of Materials and Structures, MRDMS 2018: Proceedings of the 12th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. Ramasubbu, S., Gorkunov, E. S. & Panin, V. E. (eds.). American Institute of Physics Inc., Vol. 2053. 030023

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

inclusions
composite materials
acoustics
plastics
elastic media

Modeling and Interpretation Wave Fields in Hierarchical Heterogeneous Medium

Khachay, A. Y., Khachay, O. Y. & Hachay, O. A., 2018, SOIL TESTING, SOIL STABILITY AND GROUND IMPROVEMENT. Frikha, W., Varaksin, S. & DaFonseca, AV. (eds.). Springer, p. 311-319 9 p. (Sustainable Civil Infrastructures).

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Modeling complex state of block-layered rock mass with hierarchic inclusions

Khachay, O. A. & Khachay, O., 28 Mar 2018, In : IOP Conference Series: Earth and Environmental Science. 134, 1, 012025.

Research output: Contribution to journalConference articleResearchpeer-review

wave field
rock
diffraction
modeling
S-wave
2017

Determination of the plastic hierarchical inclusion surface located in layered block media using acoustic monitoring data

Khachay, A. Y., Khachay, O. Y. & Hachay, O. A., 1 Jan 2017, 16th International Conference Geoinformatics - Theoretical and Applied Aspects. European Association of Geoscientists and Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

acoustics
plastics
plastic
Acoustics
inclusions

Reflection of processes of non-equilibrium plastic or two-phase filtration in oil-saturated hierarchic medium

Khachay, O. Y., Khachay, A. Y. & Hachay, O. A., 2017, IOR NORWAY 2017 � 19th European Symposium on Improved Oil Recovery: Sustainable IOR in a Low Oil Price World. European Association of Geoscientists and Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

saturated medium
plastic
Plastics
Electromagnetic induction
oil
electromagnetic field
wave field
inverse problem
acoustics
elastic wave
monitoring system
seismicity
monitoring
rock
heterogeneous medium
2016
rock
energy
explosion
information processing
wave energy

Modeling of longitudinal and transversal wave diffraction on 2-D anomaly density heterogeneity of hierarchic structure, located in the N-layered elastic medium

Hachay, O. A., Khachay, O. Y. & Khachay, A. Y., 2016, Geoinformatics 2016 - XVth International Conference on Geoinformatics - Theoretical and Applied Aspects. European Association of Geoscientists and Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

wave diffraction
Diffraction
Acoustics
anomaly
layered medium

ON SOME NUMERICAL INTEGRATION CURVES FOR PDE IN NEIGHBORHOOD OF "BUTTERFLY" CATASTROPHE POINT

Khachay, O. Y. & Nosov, P. A., 2016, In : URAL MATHEMATICAL JOURNAL. 2, 2(3), p. 127-140 14 p.

Research output: Contribution to journalArticleResearchpeer-review

Catastrophe
Numerical integration
Nonlinear ODE
Curve
Matched Asymptotic Expansions

Precursors of rock bursts in rock massive according to detailed seismological catalogue data

Hachay, O. A. & Khachay, O. Y., 2016, 7th EAGE Saint Petersburg International Conference and Exhibition: Understanding the Harmony of the Earth's Resources Through Integration of Geosciences. European Association of Geoscientists and Engineers, p. 927-931 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Rock bursts
catalogs
bursts
releasing
Rocks
2015

Interpretation algorithm for active electromagnetic monitoring data within double-rank hierarchical model of geological environment

Khachay, O. Y., 1 Jan 2015, 2015 2ND INTERNATIONAL CONFERENCE ON INFORMATION SCIENCE AND CONTROL ENGINEERING ICISCE 2015. Li, SZ., Dai, Y. & Cheng, Y. (eds.). IEEE Computer Society, p. 785-789 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

New method of modeling and interpretation wave fields monitoring data in hierarchic medium

Hachay, O. A., Khachay, O. Y. & Khachay, A. Y., 2015, 14th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects, Geoinformatics 2015. European Association of Geoscientists and Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Inverse problems
Monitoring
Electromagnetic fields
Differential equations

Research the Dynamical Characteristics of Slow Deformation Waves as a Rock Massif Response to Explosions during its Outworking

Hachay, O., Khachay, O. & Shipeev, O., 2015, Energy Procedia. Elsevier, Vol. 76. p. 421-426 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Explosions
Rocks
Information use
Wave propagation
Phase diagrams
explosion
diagram
rock
energy
trajectory
2014
1 Citation (Scopus)

New method of active electromagnetic induction and seismic monitoring in oil saturated media

Hachay, O., Khachay, O. & Khachay, A., 2014, European Geosciences Union General Assembly 2014, EGU Division Energy, Resources and the Environment (ERE). Elsevier, Vol. 59. p. 28-35 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Electromagnetic induction
Monitoring
Drainage
Acoustics
Phase diagrams

On the application of the method of matching asymptotic expansions to a singular system of ordinary differential equations with a small parameter

Khachai, O. Y., May 2014, In : Differential Equations. 50, 5, p. 608-622 15 p.

Research output: Contribution to journalArticleResearchpeer-review

Singular Systems
System of Ordinary Differential Equations
Small Parameter
Asymptotic Expansion
Uniform Estimates
2013
1 Citation (Scopus)

Monitoring rock and foundation stability by observing the electromagnetic fields, city of 15th of May, Cairo, Egypt

Atya, M. A., Hachay, O. H., Hachay, O. Y. & Ragab, A. A., 2013, 2nd International Conference on Engineering Geophysics. European Association of Geoscientists and Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Egypt
electromagnetic field
electromagnetic fields
rocks
monitoring

New method of active electromagnetic induction and seismic monitoring in oilsaturated media

Hachay, O. A., Khachay, O. Y. & Khachay, A. Y., 2013, Saint Petersburg Russia - From Fundamental Science to Deployment: 17th European Symposium on Improved Oil Recovery, IOR. European Association of Geoscientists and Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

oil
acoustics
diagram
drainage
heterogeneous medium
2012

Estimating the geotechnical parameters from CSEM monitoring data at the city of 15th May, Egypt

Atya, M. A., Oleg Hachay, A., Hachay, O. Y. & El Said Ragab, A., 2012, Near Surface Geoscience 2012. European Association of Geoscientists and Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Egypt
estimating
electromagnetic field
profiles
crack

Reflection of no equilibrium two phase processes of filtration in heterogeneous media in the active seism acoustic borehole monitoring data

Hachay, O. A., Dryagin, V. V., Igolkina, G. V. & Khachay, O. Y., 2012, Saint Petersburg 2012 - Geosciences: Making the Most of the Earth's Resources. European Association of Geoscientists and Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2 Citations (Scopus)

Structure of boundary layers in singular problems

Il'In, A. M. & Khachai, O. Y., Jul 2012, In : Doklady Mathematics. 86, 1, p. 497-499 3 p.

Research output: Contribution to journalArticleResearchpeer-review