A5041060375- Hydraulic Fracturing and Reservoir Analysis
- Enhanced Oil Recovery Techniques
- Hydrocarbon exploration and reservoir analysis
- Reservoir Engineering and Simulation Methods
- Coal Properties and Utilization
- Drilling and Well Engineering
- Methane Hydrates and Related Phenomena
- Rock Mechanics and Modeling
- Lattice Boltzmann Simulation Studies
- CO2 Sequestration and Geologic Interactions
- Groundwater flow and contamination studies
- Seismic Imaging and Inversion Techniques
- Atmospheric and Environmental Gas Dynamics
- Geothermal Energy Systems and Applications
- NMR spectroscopy and applications
- Minerals Flotation and Separation Techniques
- Fluid Dynamics and Thin Films
- Carbon Dioxide Capture Technologies
- Material Dynamics and Properties
- Aerosol Filtration and Electrostatic Precipitation
- Heat and Mass Transfer in Porous Media
- Resilience and Mental Health
- Advanced Numerical Methods in Computational Mathematics
- Surface Modification and Superhydrophobicity
- Generative Adversarial Networks and Image Synthesis
Nazarbayev University
2020-2025
University of Tulsa
2013-2019
Clinical Research Solutions
2002-2017
ExxonMobil (United States)
1990-2001
Abstract The increasing atmospheric CO 2 concentration linked to human activity results in global warming by the greenhouse effect. This anthropogenic may be sequestrated into geological formations, e.g., porous basalts, saline aquifers, depleted oil or gas reservoirs, and unmineable coal seams. Furthermore, carbon capture, utilization, storage (CCUS) methods are an acceptable sustainable technology meet goals of Paris Agreement, which Kazakhstan is expected reduce emissions 25% compared...
Research of microstructure and permeability evolution coal following LN2 treatment elucidate the process cryogenic fracturing due to environmentally friendly behavior in comparison with conventional hydraulic fracturing. The 2D bituminous before after was examined using a high-resolution camera. image processing implemented functions from OpenCV Python library that are sequentially applied digital images original samples. were converted into binary pixel matrices identify cracks evaluate...
Abstract Cryogenic fracturing using liquid nitrogen (LN 2 ) is a novel stimulation technology that enhances porosity, permeability, and rock-fluid contact area in subsurface formations targetted for geothermal energy extraction. In our experimental study, granite cores collected from the Zhylgyz region South Kazakhstan were equilibrated at various elevated temperatures before treatments involving LN exposure time. Compression, Brazilian, fracture toughness tests performed on with starting...
The influence of repeated liquid nitrogen (LN2) exposure treatments on the geomechanical integrity granite samples from Kazakhstan was investigated using measures fracture toughness and indirect tensile stress (Brazilian tests) with initial temperatures ranging 100 °C to 500 °C. These tests were compared baseline conducted at 50 without LN2. Our research indicated that LN2 treatment in freezing-thawing cycles can significantly degrade strength, making permeability enhancement mechanical...
Summary High resolution computed microtomography (CMT) with synchrotron X-ray sources provides the ability to obtain three-dimensional (3D) images of specimens a spatial on order micrometers. Microimaging capabilities at Brookhaven Natl. Laboratory's Synchrotron Light Source have been enhanced provide larger and higher 3D renderings pore networks in reservoir rocks fraction time required previous first generation scanning methods. Such data are used model single multiphase flow properties...
Injection of CO2 and subsequent desorption CH4 is considered to be the most efficient enhanced coalbed methane (ECBM) recovery technique date. Meanwhile, CO2-ECBM an excellent option for geo-sequestration extended period. Despite ongoing research efforts several field applications this technology, mechanisms process have yet fully understood. The heterogeneity, fluid interactions with coal, induced swelling, continuous pressure composition changes require outright insights optimal...
Coalbed methane (CBM) is a significant unconventional natural gas resource existing in matrix pores and fractures of coal seams cleaner energy compared to crude oil. To produce CBM, stimulation operations are required, given that the permeability generally too low. Hydraulic fracturing most widely used technology for reservoir stimulation; however, there few challenging issues associated with it, e.g., huge water consumption. In past decade, use liquid nitrogen (LN2) as fluid has been...
Coalbed methane (CBM) production is effectively achieved by utilizing two processes, viz. primary and secondary recovery. In this paper, the recovery of CBM was studied using adsorption isotherm while CO2-ECBM process for simulated with realistic parameters. The CH4 drawn up to pressure 1200 psi four coal samples Langmuir curves both CO2 measured one sample 2000 psi. further utilized finding factor methane, showing that average ~ 54% highest 76% sample. Hence, could be implemented enhance...
Summary A laboratory study of the steady generation and flow gas surfactant solution through an oil-wet porous medium indicates that foam is formed effective in reducing permeability. comparison characteristics water-wet media showed at similar concentrations permeability reduction both systems approximately equal. The ability to form stable situ appears result from alteration initially hydrophobic surface hydrophilic by two mechanisms: tension adsorption. Wettability evidenced a dramatic...
This study evaluated two distinct cryo-fracturing techniques using liquid nitrogen (LN2). The evaluation included tests for peak compression strength, acoustic emission, and energy absorption. experiments compared single-exposure freezing time (FT) multiple-exposure freezing–thawing cycle (FTC) processes on dried specimens. outcomes indicated that FTC demonstrated lower uniaxial stress (UCS) values to FT because, during the thawing phase, ice inside pores reverts as temperature rises....