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首页> 外文期刊>Science in China, series B. Chemistry,Life Sciences and Earth Sciences >Controlling mechanism of sedimentation-burial history on oil-gas maturation history — A case study in Qaidam Basin
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Controlling mechanism of sedimentation-burial history on oil-gas maturation history — A case study in Qaidam Basin

机译：沉积-埋藏史对油气成熟史的控制机制-以柴达木盆地为例

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Three types of practical data ate used for basin simulation: stratigraphic column thicknesses interpreted in the light of the common seismic reflecting layers, the percentage of mudy rocks in the column and the statistical heat flow values. A mesh point data read-in technique is used for the region coveted by Tertiary strata in the basin. A B-T-M computer software is developed for simulating the burial, thermal and oil-gas maturation histories on 703 mesh points. Furthermore, five typical types of oil-gas evolution trends are summarized on the basis of the characteristics of B-T-M evolution graph of each single mesh point. A careful analysis shows that the sedimentation-burial history through differentiated stratum thermal history in the different parts of the basin ultimately controls the temporal sequence and the threshold temperature and depth of oil-gas maturation, as well as the whole evolutionary process of petroleum formation of oil-source rocks from low-maturation, high-maturation through over-maturation to the limit of wet-gas preservation at different development stages. All this would provide an important basis for the prediction of oil-gas resource prospect in the Qaidam Basin.
机译：盆地模拟使用了三种类型的实用数据：根据常见的地震反射层解释的地层柱厚度，柱中的泥岩百分比和统计的热流值。网格点数据读取技术用于盆地中第三系所渴望的区域。开发了B-T-M计算机软件，用于模拟703网格点上的埋藏，热成熟和油气成熟历史。此外，根据每个单个网格点的B-T-M演化图的特征，总结了五种典型的油气演化趋势。仔细的分析表明，盆地不同地区通过差异地层热史的沉积-埋藏历史最终控制了油气成熟的时间序列，阈值温度和深度，以及整个油气形成的整个演化过程。从低成熟度到高成熟度到过成熟度到不同开发阶段湿气保存的极限。这为柴达木盆地油气资源前景的预测提供重要依据。

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