{
  "abstract": "Shale oil content is commonly evaluated using Rock-Eval pyrolysis S1, but conventional S1 may underestimate total oil content because light hydrocarbons can be lost during storage and heavy hydrocarbons may remain undetected below 300 °C. This study evaluates the shale oil sweet spot interval of the lower Es3 sub-member (Es3L) in the Bonan subsag, Jiyang Depression, Bohai Bay Basin, by integrating organic geochemical data, open-system hydrocarbon generation simulation, gold-tube pyrolysis, and corrected oil-content calculation. The results show that correction of both light and heavy hydrocarbon losses improves the quantitative estimation of total shale oil content. A three-segment relationship between corrected total oil content and TOC defines the enrichment threshold for the Es3L shale, with TOC > 2.4% indicating enriched shale oil resources. Movable oil content, calculated from the difference between total oil content and adsorbed oil content, further constrains sweet spot identification. The interval of 2981–3041 m in Well L69 satisfies both enrichment and movability criteria and is therefore identified as the preferred sweet spot interval. The proposed workflow provides a practical framework for shale oil sweet spot evaluation in the Bonan subsag and comparable lacustrine shale systems.",
  "abstract_shown": true,
  "affiliations": [
    "College of Geosciences, China University of Petroleum",
    "Sanya Offshore Oil & Gas Research Institute of Northeast Petroleum University",
    "National Key laboratory of deep oil & gas, China University of Petroleum (East China)"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Tianjiao Wang"
    },
    {
      "affs": [
        0
      ],
      "name": "Xiaoping Liu"
    },
    {
      "affs": [
        1
      ],
      "name": "Guohui Chen"
    },
    {
      "affs": [
        1
      ],
      "name": "Shuangfang Lu"
    },
    {
      "affs": [
        2
      ],
      "name": "Min Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cctmh1gp6ax2n.bib",
  "cited_by": 0,
  "doi": "10.1038/s41598-026-62180-4",
  "fulltext_url": "https://doi.org/10.1038/s41598-026-62180-4",
  "id": "cctmh1gp6ax2n",
  "issns": [
    "2045-2322"
  ],
  "landing_url": "https://doi.org/10.1038/s41598-026-62180-4",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "Q"
    ],
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      "lcc",
      "R"
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    [
      "openalex",
      "2211|Hydrocarbon exploration and reservoir analysis"
    ]
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  "openalex": "W7169789320",
  "pdf_url": "https://www.nature.com/articles/s41598-026-62180-4_reference.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-01",
  "publisher": "Nature Portfolio",
  "ris": "https://research.draconitic.com/paper/cctmh1gp6ax2n.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:45:47Z",
      "native_id": "b74d7767a5504687a49edfa720e3f102",
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      "url": "https://doi.org/10.1038/s41598-026-62180-4"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "lcc:R",
      "subfield": "general"
    }
  ],
  "title": "Shale oil sweet spot section evaluation based on oil bearing characteristics in Es3L subsection of Bonan subsag in Jiyang depression",
  "title_text": "Shale oil sweet spot section evaluation based on oil bearing characteristics in Es3L subsection of Bonan subsag in Jiyang depression",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:45:47Z",
  "url": "https://research.draconitic.com/paper/cctmh1gp6ax2n",
  "venue": "Scientific Reports",
  "versions": []
}