petroleum-engineering

Shale reservoirs influenced by multiscale factors such as mineral composition and depositional processes, are characterized by the development of micro-to nanopores and pronounced bedding structures. These features lead to extreme fluid occurrence states and significantly increased structural complexity of fracture networks after hydraulic fracturing. In the case of degassed crude oil, particular…

Thin-interbedded low-permeability sandstone reservoirs are characterized by frequent sand–mudstone alternations and strong vertical heterogeneity, which make accurate sweet-spot identification and reliable development-performance prediction difficult. Conventional sweet-spot evaluation methods commonly rely on fixed weighting or linear parameter superposition, and thus cannot fully represent the …

Scientific Reports, Published online: 07 August 2026; doi:10.1038/s41598-026-66071-6 Velocity deviation-based pore type classification in an Iranian carbonate gas reservoir using multiscale integrated data

Scientific Reports, Published online: 28 July 2026; doi:10.1038/s41598-026-63939-5 Experimental and simulation study of preformed particle gel-assisted conformance control in dual sandpack systems for enhanced oil recovery

Accurate evaluation of transmissibility is central to reliable numerical simulation of gas flow in porous media, because of its pressure-dependent properties such as density and viscosity. In commercial reservoir simulators, inter-block transmissibility is calculated using upstream averaging and in the well-containing grid-block, it is evaluated at the grid-block pressure. This procedure does not…

Journal of Computer Science, Published online: 15 June 2026; doi:10.3844/jcssp.2026.1835.1842 Reservoir characterization is a fundamental process in estimating reserves within petroleum and hydrogeological systems, where the precise determination of pore space dictates the validity of fluid fl...

Successful unconventional oil and gas production relies on horizontal drilling and hydraulic stimulation. Wellbore casing deformation–including distributed bending (buckling), zones of ovality, and discrete shearing–can hinder deployment of downhole tools and, in severe cases, lead to complete well loss. Geological factors (e.g., stress and pore pressure states, rock properties) represent root ca…

Scientific Reports, Published online: 06 June 2026; doi:10.1038/s41598-026-54830-4 Permeability calculation for glutenite reservoirs based on variable T 2 cutoff value in nuclear magnetic resonance logging

Pore volume compressibility (PVC) is a key petrophysical parameter controlling the mechanical response and production performance of reservoir rocks. However, the complex and heterogeneous pore systems of carbonate reservoirs make it difficult for traditional empirical models developed for sandstone to accurately predict PVC. In this study, an interpretable PVC prediction framework based on XGBoo…

Oil wells often dry up far earlier than predicted, leaving companies baffled about the “missing” reserves. A Penn State team tackled this puzzle by harnessing PSC’s Bridges-2 supercomputer, adding a time dimension and amplitude analysis to traditional seismic data. Their findings revealed hidden rock structures blocking oil flow, meaning reserves weren’t gone—they were trapped.

The following information is more towards the Oil and Gas field, especially exploration and production area. Check out the infos that was delivered to my mailbox. Hart Energy Publishing and E&P are pleased to announce that RPSEA will co-present BOMA 2007. Hart Enery Publishing and E&P Magazine announce the Research Partnership to Secure Energy for America (RPSEA) has agreed to co-present the 3rd …