Because of the differences of hydrocarbon accumulation between in-source and out-of-source oil pools, the demand for source kitchen is different. Based on the establishment of source-to-reservoir correlation in the known conventional accumulations, and the characteristics of shale oil source kitchens as well, this paper discusses the differences of source kitchens for the formation of both conventional and shale oils. The formation of conventional oil pools is a process of hydrocarbons enriching from disperse state under the action of buoyancy, which enables most of the oil pools to be formed outside the source kitchens. The source rock does not necessarily have high abundance of organic matter, but has to have high efficiency and enough amount of hydrocarbon expulsion. The TOC threshold of source rocks for conventional oil accumulations is 0.5%, with the best TOC window ranging from 1% to 3%. The oil pools formed inside the source kitchens, mainly shale oil, are the retention of oil and gas in the source rock and there is no large-scale hydrocarbon migration and enrichment process happened, which requires better quality and bigger scale of source rocks. The threshold of TOC for medium to high maturity of shale oil is 2%, with the best range falling in 3%–5%. Medium to low mature shale oil resource has a TOC threshold of 6%, and the higher the better in particular. The most favorable kerogen for both high and low-mature shale oils is oil-prone type of I–II₁. Carrying out source rock quality and classification evaluation and looking for large-scale and high-quality source rock enrichment areas are a scientific issue that must be paid attention to when exploration activity changes from out-of-source regions to in-source kitchen areas. The purpose is to provide theoretical guidance for the upcoming shale oil enrichment area selection, economic discovery and objective evaluation of resource potential.

由于源内油藏和源外油藏的成藏差异，对源灶的需求也不同。在建立已知常规油藏源储对比的基础上，结合页岩油源灶的特点，探讨了常规和页岩油形成的源灶差异。常规油藏的形成是烃类在浮力作用下从分散状态富集的过程，使得大部分油藏形成在源灶外。烃源岩不一定有机质丰度高，但必须具有高效率和足够的排烃量。常规油藏烃源岩 TOC 阈值为 0.5%，最佳 TOC 窗口范围为 1% 至 3%。烃源灶内部形成的油藏以页岩油为主，是烃源岩中油气的滞留，没有发生大规模油气运移富集过程，对烃源岩质量要求更高，规模更大。页岩油中高成熟度的 TOC 阈值为 2%，最佳范围为 3%~5%。中低成熟页岩油资源的TOC阈值为6%，尤其是越高越好。高成熟度和低成熟度页岩油最有利的干酪根是 I-II 型油倾向 是油气在烃源岩中的滞留，没有发生大规模油气运移和富集过程，需要更好的质量和更大规模的烃源岩。页岩油中高成熟度的 TOC 阈值为 2%，最佳范围为 3%~5%。中低成熟页岩油资源的TOC阈值为6%，尤其是越高越好。高成熟度和低成熟度页岩油最有利的干酪根是 I-II 型油倾向 是油气在烃源岩中的滞留，没有发生大规模油气运移和富集过程，需要更好的质量和更大规模的烃源岩。页岩油中高成熟度的 TOC 阈值为 2%，最佳范围为 3%～5%。中低成熟页岩油资源的TOC阈值为6%，尤其是越高越好。高成熟度和低成熟度页岩油最有利的干酪根是 I-II 型油倾向₁ . 开展烃源岩质量分级评价，寻找大规模优质烃源岩富集区，是勘探活动从源外区向源内厨房区转变时必须重视的科学问题。目的是为即将开展的页岩油富集区选择、经济发现和资源潜力的客观评价提供理论指导。