What question did this study set out to answer?

The study investigates how salinity, water depth, and primary productivity affect organic-matter enrichment in Qingshankou shales.

March 29, 2026ACS OmegaOpen Access

A “Salt–Paleowater Depth–Productivity” Triad Controlling Storage: An Integrated Framework of Organic-Matter Enrichment in Qingshankou Shales, Qian’an, Songliao Basin

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Authors

TLTong LiNortheast Petroleum University QYQi YaoNortheast Petroleum University JMJialin MoNortheast Petroleum University

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Implication

Reveals how salinity, water depth, and productivity influence organic-matter enrichment in shales, suggesting new evaluation strategies for shale oil.

Key Points

The study investigates how salinity, water depth, and primary productivity affect organic-matter enrichment in Qingshankou shales.
Analyzed 54 core samples from Well QY2 for total organic carbon and pyrolysis parameters.
Assessed trace-element proxies to evaluate oil content and depositional environments.
Compared characteristics between the first and second members of the Qingshankou Formation.
Member 1 shows higher total organic carbon (TOC) and hydrocarbon generation potential compared to Member 2.
Trace-element proxies indicate deposition in a semideep-to-deep lacustrine setting under varying paleoclimatic conditions.
Higher salinity, greater water depth, and enhanced primary productivity correlate with increased TOC values.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/69c8c195de0f0f753b39bf7f https://doi.org/10.1021/acsomega.6c00017

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Implication

Reveals how salinity, water depth, and productivity influence organic-matter enrichment in shales, suggesting new evaluation strategies for shale oil.

A “Salt–Paleowater Depth–Productivity” Triad Controlling Storage: An Integrated Framework of Organic-Matter Enrichment in Qingshankou Shales, Qian’an, Songliao Basin

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Key Points

Cite This Study

A “Salt–Paleowater Depth–Productivity” Triad Controlling Storage: An Integrated Framework of Organic-Matter Enrichment in Qingshankou Shales, Qian’an, Songliao Basin

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Implication

Key Points

Cite This Study

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