How do chlorite coatings form on quartz surface?
نویسندگان
چکیده
Chlorite-coats on quartz surfaces are ubiquitous in various sedimentary environments. shield the surface of from cement overgrowths, thus preserving anomalously high porosity deeply buried sandstone reservoirs. The inhibition implies that chlorite-coats grains can significantly influence physicochemical behavior grains. Therefore, failure to notice initial thin microscale coatings forming during deposition have serious consequences for modeling several geochemical reactions occurring at liquid-solid interfaces. Despite this huge implication, fundamental mechanisms involved chlorite-coat formation is not well understood. Here we present an experimental study determine parameters control batch experiments were conducted a concoction and chlorite under different conditions ionic strength, pH, presence humic acid (HA), iron- (Fe) aluminum (Al) oxides). HA, Fe- Al oxides suggested aid emplacement precursors. At pH 7, quartz–chlorite quartz–chlorite–Fe/Al-oxides mixing performed saline non-saline solution result equal coverages, suggesting neither salinity nor Fe Al-oxides explain formation. 5 9, however coverage was superior only solution, indicating differences coat may be caused by variable electrokinetic charge distribution due transport dissolved salt. barely formed contain HA mixtures regardless strength pH. Against long-standing notion, organic matter cannot necessarily prerequisites binding dynamic interactions between chemistry solid phases (quartz, chlorite, oxides) changing properties region near mineral-solution We therefore propose response arises heterogeneous systems
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ژورنال
عنوان ژورنال: Journal of Petroleum Science and Engineering
سال: 2022
ISSN: ['0920-4105', '1873-4715']
DOI: https://doi.org/10.1016/j.petrol.2022.110682