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澧五井位于扬了地台桑植石门复向斜东部。通过对澧五井成岩期后变化的研究和油期显示的综合分析,笔者认为:澧五井T_1d-p_1q各组的油主要来源于自层和邻近层。它们有二次生油期,第一次生油期为巴东组沉积期,此时T—P地层中有机质向石油演化还未达到最高峰,有的刚开始进入生油门限,由于印支运动二幕使地壳强烈抬升、剥蚀,地温降低,有机质停止向石油转化。第二期为燕山运动热液活动期,澧五井P—T进油期为生油期和稍后。最后指出:中扬子T—P油气的有利地区应为上覆具有较大的中新代盆地的地区。
澧 five wells in the Yang platform Sangzhi Shimen complex syncline to the east. Based on the study of the change of Diwujing diagenetic period and the comprehensive analysis of the oil period, the author believes that the oil of T_1d-p_1q of Miwo well mainly comes from the layer and the adjacent layers. They have a secondary oil-producing period, the first oil-producing period is the sedimentary period of the Badong Formation. At this time, the evolution of organic matter to oil in the T-P strata has not yet reached its peak, and some of them have just begun to enter the oil-producing threshold. Campaign two scenes so that the crust strongly uplifted, erosion, lower ground temperature, organic matter to stop the conversion of oil. The second phase is the Yanshan movement hydrothermal activity period, and the Weifang P-T intake period is the oil-producing period and later. Finally, it is pointed out that the favorable area of middle Yangtze T-P oil and gas should be the area covered by the larger Meso-Cenozoic basins.