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丽水 36 1构造位于东海陆架盆地 (台北坳陷 )丽水西次凹的中东部 ,该凹陷属新生代断陷型盆地 ,呈北东向展布 ,上古新统灵峰组和明月峰组是主要目的层段。根据该构造已钻的 3口井进行系统沉积学和测井相研究 ,上古新统物源主要来自凹陷西部的闽浙隆起带和中部的灵峰凸起带 ,可能还有北部的雁荡凸起带。不同的物源区通过断层的活动和海平面的升降等控制着沉积体系的发育和展布。在凹陷下陷兴盛和海平面快速上升期 ,灵峰凸起带物源经过边缘大断层在其西侧形成扇三角洲 ,进一步向凹陷中心推进形成深水浊积扇和浅海沉积 ;闽浙隆起带物源可能沿着不同的入口在凹陷西斜坡形成扇三角洲 ,它们也可进一步向凹陷深处推进形成深水浊积扇体。根据油气聚集规律和物源分析 ,形成于凹陷深水区的浊积扇沉积和斜坡带的扇三角洲前缘沉积 ,具有良好的生储盖组合 ,是有利的勘探目标。
The Lishui 36 1 structure is located in the central-eastern part of the Xishigou, Lishui, the East China Sea Shelf Basin (Taipei Depression), belonging to the Cenozoic fault basin and distributed in the northeast direction. The Paleolithic Lingfeng Formation and Mingyuefeng Formation are mainly The purpose of the paragraph. Based on the three wells drilled by this structure, systematic sedimentology and log facies studies were conducted. The source of the Paleocene is mainly from the Fujian-Zhejiang uplift in the west of the depression and the Lingfeng uplift in the middle, and possibly the northern Yandang uplift band. Different provenance areas control the development and distribution of sedimentary systems through the activity of faults and the rise and fall of sea level. In the depression depression and the rapid rise of the sea level, the source of the Lingfeng uplift belt formed a fan delta on the west side through the edge faults and pushed further toward the center of the depression to form the turbidite fan and the shallow sea sediments. The Fujian-Zhejiang uplift belt source It is possible to form fan delta along the sagging west slope along different entrances, and they may further advance deep into the sag to form turbid turbofan. According to hydrocarbon accumulation and provenance analysis, the turbidite fan formed in the deep depression of the depression and the fan delta front deposit in the slope zone have a good combination of genesis and cover, which is a favorable exploration target.