浅谈盆地热历史及烃源岩热演化研究在中国油气资源战略选区调查评价中的意义
Importance of the study of the basin thermal history and source rock thermal evolution in the-investigation and evaluation of strategic petroleum area selection in China
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摘要: 目前国家开展了全国油气资源战略选区调查与评价专项10个项目，包括陆上新区，海域，老油气区的新领域、新层系、新类型，长期久攻不克的地区、盆地和地表、地形条件复杂的地区。这些地区总体来讲油气工作程度较低。在油气调查评价中，特别是初期．烃源岩的评价是第一位的，而烃源岩热演化研究是烃源岩评价的重要内容之一。同时盆地内烃源岩热演化史的差异对盆地内的油气分布具有重要影响；热历史又从另一个侧面反映了盆地的成因及发展过程，对于指导油气勘探具有重要意义。Abstract: Ten special projects of investigation and evaluation of countrywide strategic petroleum area selection have been carried out now, which include oil and gas survey in onshore frontier areas, offshore areas, new fields, new strata and new petroleum accumulation types in mature petroleum-bearing areas, low exploration success ratio areas and basins, and areas with complicated surface and topographic conditions. On the whole, these areas are underexplored. During petroleum investigations and evaluation, especially in the early stage, the source rock appraisal is the most important work in these areas and the study of the thermal evolution of source rocks is one of the most important content in source rock appraisal. In addition, the source rock thermal evolution in the basin has great influence on oil and gas distribution, and the thermal history reflects the origin and evolution of sedimentary basin from another aspect, so it has great significance for guiding petroleum exploration.
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