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Nurudeen Yekeen,Eswaran Padmanabhan,Thenesh A/L Sevoo,Kamalarasan A/L Kanesen,Oluwagade Adenike Okunade 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.88 No.-
Carbondioxide injection into geological formations is a promising method of optimizing hydrocarbonrecovery, as well as improving CO2 geo-storage security. However, the success of CO2-enhancedhydrocarbon recovery and CO2 geo-storage projects is determined by the wettability of rock/CO2/brinesystems. A critical review of the existing literature that discussed the wettability alteration ofconventional and unconventional reservoir rocks (carbonate, sandstone and shale), as well as theirrepresentative pure minerals (calcite, quartz and mica), on interaction with CO2-water/brine system wasconducted in this study. Wettability influencing parameters and recent advances in wettabilitymodification by nanofluids/nano-surfactants were extensively discussed. Knowledge gaps wereidentified and direction for future studies were suggested.
A review of recent advances in foam-based fracturing fluid application in unconventional reservoirs
Nurudeen Yekeen,Eswaran Padmanabhan,Ahmad Kamal Idris 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.66 No.-
Foam-based fracturing fluid application in unconventional reservoirs has recently attracted prodigious attention, due to their high apparent viscosity and ultra-low water contents, which enhanced their potential applications as proppants carrier fluids in water sensitive formations. A comprehensive review of existing literature on the applications and recent advancement of foam fracturing fluid is conducted in this study. Results of experimental studies, simulations predictions and field applications were extensively discussed. Challenges and knowledge gaps were identified and directions for future studies were suggested. The review literature suggested that stable foam fracturing fluids can increase the productivity of the fractured wells.
Joel Ben-Awuah,Eswaran Padmanabhan,Rajalingam Sokkalingam 한국지질과학협의회 2017 Geosciences Journal Vol.21 No.2
Geochemistry, paleoweathering, provenance, tectonic setting, paleoclimate and paleoenvironment of deposition of offshore Miocene sedimentary rocks in the West Baram Delta have been examined through multi-element geochemistry and mineralogy. Materials and methods used in the study include ninety four core samples from four subsurface wells, XRF, thin sections and FESEM. Four main groups of samples are identified in the wells: porous sandstones, cemented sandstones, siltstones and mudstones. The sandstones are classified as sublitharenites, litharenites and Fe-rich sandstones based on chemical composition and mineralogy. Variations in compositional trends suggest strong lithological and diagenetic controls on the geochemical composition of the samples. Petrography of the samples indicates that they are composed mainly of quartz, K-feldspar, siderite and clay minerals. The samples are characterized by moderate to high degree of chemical weathering with CIA values between 52–76 and PIA values from 65–100. Provenance analysis of the samples shows predominantly felsic and intermediate igneous provenance with minor mafic contribution. The samples are inferred to have originated from a passive margin tectonic setting that followed the continental collision and rifting stages of the foreland basin development phase of the Sarawak Basin. The paleoclimate of deposition of the samples is interpreted to be warm and humid enhancing the chemical weathering. The paleoenvironment of deposition is predominantly suboxic to anoxic.