A5003006670- Hydrocarbon exploration and reservoir analysis
- Hydraulic Fracturing and Reservoir Analysis
- Drilling and Well Engineering
- NMR spectroscopy and applications
- Coal Properties and Utilization
- Rock Mechanics and Modeling
- Seismic Imaging and Inversion Techniques
- Petroleum Processing and Analysis
- Geomechanics and Mining Engineering
Indian Institute of Technology Kanpur
2021-2024
Understanding gas flow in depleted unconventional reservoirs is crucial but limited, particularly organic-rich shale with ultrafine nanopores and high matrix compressibility. Here, we assess the apparent permeability (kapp) along perpendicular parallel to bedding, as well through fractures─using samples from three petroliferous basins India. Our experiments simulate reservoir conditions varying mean pore pressures (Pm), using both sorbing (N2, CO2) nonsorbing (He, Ar) gases, results are...
Mineralogical composition and porosity significantly influence the mechanical behavior of hydrocarbon reservoir rocks in crustal conditions. To understand failure dynamic changes with axial loading, triaxial compression experiments were conducted, three distinct rock types: KG Basin Sandstone, Bombay High limestone, Boise Sandstone. Initial porosities collected samples varied; sandstone at 30%-32%, limestone 9.5%-12.7%, 20.6%-25%, determined under dry testing A range effective pressures...
Heterogeneous nanopore structure and distribution regulate the gas trapping, desorption kinetics, diffusion in shale matrices. In shale, pores range from continuous micro- mesopore size distributions, varying with organic (total matter-TOC) inorganic constituents (clay content, Fe-bearing minerals, quartz, etc. ). Previous research only showed a linear relationship of pore parameters these intrinsic properties which limits our understanding concurrent influence multiple rock properties. As...
Thermal stimulation is emerging as a promising method for enhancing shale gas recovery by changing matrice's poromechanical and dynamic sorption behaviors. This study delves into the transformation of physio-morpho-nanopores within Barren measure matrices in Jharia coal field under elevated thermal stimulation, aiming to elucidate impact nearby fires on intrinsic properties verify applicability mine fire shales. Employing comprehensive multiple-multiscale analysis, we integrated low-pressure...
We report apparent permeabilities (ka) of coal samples from Bansgara, Jharia, and Bokaro collieries Gondwana coalfield (India) to assess the Klinkenberg coefficients (b) intrinsic (k∞) owing their characteristic pore-size distributions. All ka values were measured with N2 at room temperature, constant 6.2 MPa effective stress, up 7.6 pore pressures (Pp), except for (maximum 3.5 Pp). The Bansgara also CO2 Pp MPa. distributions using low-pressure adsorption–desorption. determined b k∞ plots...
ABSTRACT: Accessible to inaccessible nanopore structure, distribution and complexity controls the storage, transport, recovery of gas-shale. Fluid- (low-pressure N2 CO2 adsorption) radiation-based (small-angle scattering) methods used characterize connected isolated nanopores in early Tertiary sequence (1043-2573 m) Cambay basin, India. The obtained continuous pore size was deconvoluted into12 families. mean width (w) micropore mesopore families are w~0.50, 0.61, 0.77, 1.11 nm, ~4.85, 8.0,...
<p>We investigated the nanopore structures of shale samples obtained from Cambay and Krishna-Godavari (KG) basins in India using low-pressure N<sub>2</sub> sorption method. The occurred at variable depths (1403-2574m 2599-2987m for KG basins, respectively) have wide ranges clay contents (56-90%) both volume mineralogy. results this study indicate specific surface area (SSA) pore diameters share a non-linear negative correlation. SSA is strong...