黄骅坳陷中部潜山地质特征及油气勘探方向

发布时间：2018-11-13 15:33

【摘要】：黄骅坳陷中部潜山具有含油层系多、勘探程度低的特点,利用新三维地震数据体,对中部潜山进行构造落实、圈闭类型及成藏模式研究,明确了该区潜山发育受控于印支—燕山期挤压构造及喜山期盆缘伸展断裂,存在背斜潜山、翘倾断块潜山和走滑隐伏潜山3种类型。背斜潜山主要发育在沿岸走滑带以东,勘探层系为奥陶系;翘倾断块潜山夹持于沿岸与孔西走滑带之间,勘探层系包括二叠系、中生界;走滑隐伏潜山发育在孔西走滑带两侧,勘探层系为二叠系及中生界。结合潜山供烃及内幕结构特点判断,认为中部潜山勘探主攻方向应集中在两大领域:其一是喜山期扭张运动中发育的翘倾断块潜山,紧邻歧口主生油气中心,双源供烃,油气源充沛,重点预探"新生古储型"南大港潜山,突破意义重大;其二是与潜山内幕存在的盲冲断层相关的走滑隐伏潜山,中、新生代经历了断裂改造,储层发育,着重探索"古生古储型"孔西走滑隐伏潜山油气藏,甩开勘探意义大。
[Abstract]:The buried hill in the middle of Huanghua depression is characterized by many oil-bearing strata and low exploration degree. Using the new three-dimensional seismic data body, the structural implementation, trap type and reservoir forming model of the buried hill in the middle part of Huanghua depression are studied. It is clear that the development of buried hill in this area is controlled by the compressional structure of Indosinian Yanshanian period and the extensional fault of basin margin of Himalayan epoch, and there are three types of buried hill in anticline, tilting block and strike-slip buried hill. The anticline buried hill is mainly developed east of the coastal strike-slip zone and the exploration strata are Ordovician, the buried hill of the tilting fault block is located between the coast and the Kongxi strike-slip zone, the exploration strata include Permian and Mesozoic. The buried hill is developed on both sides of the Kongxi strike-slip zone and the exploration strata are Permian and Mesozoic. According to the characteristics of hydrocarbon supply and inside structure of buried hill, it is considered that the main exploration direction of buried hill in central China should be concentrated in two major fields: one is the buried hill with tilting fault block developed during the twisting and tensional movement in the Himalayan period, adjacent to the main oil and gas generating center of Qikou, and providing hydrocarbon from two sources. The source of oil and gas is abundant, and it is of great significance to break through the "new type of ancient reservoir" Nandagang buried hill. The other is the strike slip hidden buried hill associated with blind thrust fault in buried hill. The Mesozoic and Cenozoic experienced fault transformation and reservoir development. The exploration of "Paleozoic paleoreservoir type" Kongxi strike-slip hidden buried hill reservoir is of great significance.
【作者单位】：东方地球物理公司研究院大港分院;中国地质大学(武汉)地球科学学院;西南石油大学地球科学与技术学院;
【分类号】：P618.13

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