Oil companies aim to increase their return on investment by extending the productive life of their existing oilfields. For that purpose, a better understanding of the physical phenomena which occur during waterflooding and enhanced oil recovery (EOR) is needed to optimise the oil recovery. In this thesis, Nuclear Magnetic Resonance (NMR) has been e...
Published in Arabian Journal of Geosciences
Eastern Tunisia is a semi-arid to arid area, located in the southern Mediterranean side, in North Africa. It is facing water scarcity, overexploitation, and decreasing water quality of the phreatic water table. Water supply and storage do not respond to the demographic and economic growth and demand. In addition, only 5 109 m3 of water from 35 109 ...
Published in Arabian Journal of Geosciences
The aim of this paper is to elucidate the impact of unconformity surfaces on diagenetic alterations and their influence on reservoir quality evolution of the siliciclastic sequence. Samples were collected from the sandstones above and below two major unconformity surfaces in the Paleozoic successions of Saudi Arabia, including the Permo-Carbonifero...
Published in Heliyon
Rock coasts are perceived to be stable, however, recent occurrence of stacks of rocks and subsequent loss of some rocky coasts poses a challenge for research. This study sought to assess the impact of waves on the compressive/tensile strength of the rocks and further investigated the lithological properties of coastal material that influence shorel...
An appropriated wettability characterization is crucial for the successful implementation of waterflooding operations. Understanding how crude oil adsorption takes place on different mineral surfaces and how these processes impact reservoir wettability are essential aspects that can help unlock and produce large underground oil reserves. Polar orga...
Published in Applied Water Science
The geo-electric properties of the granular sandstone aquifer of Lafia and environs were evaluated for the purpose of groundwater management. Vertical electrical sounding (VES) using Schlumberger electrode array with a maximum half current electrode separation of 400 m was employed. Interpretation of the VES results showed that the area is characte...
Published in Environmental Earth Sciences
Dimension stones of the central German Saale–Unstrut Region were investigated with regard to petrographic and petrophysical properties as well as their weathering behaviour, onsite and in laboratory. To evaluate the suitability of building stones in this region, different buildings (the Rudelsburg Castle, Memleben Monastery, and vineyard walls) and...
This note deals with the study of stress-sensitive relative permeability experimentally observed in low permeable sandstones. These sandstones are made up of quartz grains surrounded by permeable interfaces between grains and pores. A micromechanical model of relative permeability behaviour under loading highlights the role of the closure of interf...
Published in Arabian Journal of Geosciences
This study aims to establish new correlations to assess uniaxial compressive strength (UCS) of northern Algeria sedimentary rocks. This estimation is based on the measurements of density, porosity, and Schmidt hammer hardness. To achieve this goal, a geological and geotechnical characterization campaign was conducted on 19 types of sandstone and ca...
Published in Environmental Earth Sciences
This paper presents the results of a comprehensive study on the morphology of weathering profiles developed on metamorphic and sedimentary rocks under subtropical climate, focusing on its influence on geotechnical parameters of weathering materials. Several cut and natural slopes were selected for more detailed descriptions of their physical, miner...
