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2019
DOI: 10.1016/j.marpetgeo.2018.10.039
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Characterization of lacustrine mixed fine-grained sedimentary rocks using coupled chemostratigraphic-petrographic analysis: A case study from a tight oil reservoir in the Jimusar Sag, Junggar Basin

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Cited by 44 publications
(31 citation statements)
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“…(a) Correlation between the Sr/Ba ratio and B/Ga ratio of the Ek 2 3 in the Cangdong sag. (b) Cross plot of (C:P) org versus V/(V + Ni) of the Ek 2 in the Cangdong sag, the boundaries from (Zhang et al, 2019,b) for V/(V + Ni) and (Algeo et al, 2011; Xin et al, 2021) for (C:P) org . (c) Cross plot of La/Th versus Hf of the Ek 2 in the Cangdong sag (modified from Chen et al, 2020)…”
Section: Resultsmentioning
confidence: 99%
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“…(a) Correlation between the Sr/Ba ratio and B/Ga ratio of the Ek 2 3 in the Cangdong sag. (b) Cross plot of (C:P) org versus V/(V + Ni) of the Ek 2 in the Cangdong sag, the boundaries from (Zhang et al, 2019,b) for V/(V + Ni) and (Algeo et al, 2011; Xin et al, 2021) for (C:P) org . (c) Cross plot of La/Th versus Hf of the Ek 2 in the Cangdong sag (modified from Chen et al, 2020)…”
Section: Resultsmentioning
confidence: 99%
“…The redox condition reflects the water column stratification, which affects the sedimentary structures and the amount of organic matter in fine‐grained sedimentary rocks. Some trace elements are sensitive in different oxidation degrees of the water column, such as vanadium (V) and nickel (Ni) (Zhang et al, 2019,b). Therefore, the V/(V + Ni) ratio can be regarded as a redox proxy, which reflects oxic conditions when it is less than 0.46, dysoxic–anoxic conditions when it varies between 0.46 and 0.60, and euxinic conditions when it exceeds 0.84.…”
Section: Resultsmentioning
confidence: 99%
“…The burial depth is about ~2500-4500 m [30,31,34,36]. The Lucaogou Formation consists of variable lithologies, with a large amount of terrigenous sediments and carbonates and a small amount of pyroclastic rocks, which form a mixed sedimentary system with a thickness of about ~90-350 m [44,45] (Figure 1). The two sites with the best oil production are termed the "upper sweet spot" (P 2 l 2 2) and "lower sweet spot" (P 2 l 1 2 ), and there is a thick mudstone section between the two sweet spots [30,34,46].…”
Section: Geological Settingmentioning
confidence: 99%
“…So far, many breakthroughs have been made on the classification and depositional setting of mixed siliciclastic-carbonate rocks [5,9,10,12]. However, understanding the pore structure and connectivity of mixed siliciclastic-carbonate tight reservoirs, and the associated key controlling factors, is still lacking [14,15].…”
Section: Introductionmentioning
confidence: 99%