【摘要】 昆北断阶带是新生代以来形成的南倾北冲的斜坡带,其构造格局具有南北分带、东西分段、上下分层的特征,受此影响,昆北断阶带局部构造部位的油气聚集成藏差异性较大。油气勘探通常以区域范围内的构造单元为开展工作的基本对象,同一构造单元通常具有相对统一的基底特征、构造特征、地层沉积特征及相近的油气聚集成藏控制因素,进行构造单元划分有利于明确勘探方向、开展勘探部署。利用地震、钻井以及测井等方面的资料,在揭示了昆北地区各构造部位断裂的平面及剖面特征的基础上,主要依据基底构造的起伏形态、断裂展布与组合特征等,将昆北断阶带分为6个二级构造单元,即:西部斜坡带、中部褶皱带、南部褶皱带、东部褶皱带、东柴山褶皱带、北部斜坡带。根据各单元所处区域地质背景及内部断裂的组合关系,对其油气前景进行了初步评价,认为西部斜坡带为近期油气勘探的有利部位,北部斜坡带为有利勘探接替地带。这些研究结果为昆北地区油气地质研究、进一步油气勘探部署及优选有利勘探新领域等提供了借鉴和指导。更多还原

【Abstract】 The North-Kunlun faults zone is a slope zone which is formed and developed in Cenozoic Era,and it has the features of different zones in north and south,different parts in east and west,and different formations above and below formation,and it effects this area so much that the local structures have quite different reservoir forming conditions in different parts.The hydrocarbon exploration mostly consider some structural unit as the basic research target because they have closer basement,structural,deposit characteristics and similar controlling factors of reservoir-formation,thus it is favorable to guide the exploration direction and deployment on the basis of the division of structural unit.So,based on seismic,drilling,and logging data,and according to the rolling shape of basement structure,faults distribution and their combination characteristics,the North-Kunlun faults zone can be divided into six structural sub-units,which are: west slope belt,central folding belt,north folding belt,east folding belt,Dongchaishan folding belt and north slope belt.By investigating their geological background and faults combination,and the prospect evaluation is also carried out,which indicates that the west slope zone is the more favorable area for present hydrocarbon exploration,the north slope belt is the favorable exploration succeed area.Thus,the conclusion will be helpful for the research of hydrocarbon formation and further hydrocarbon exploration in North-Kunlun area.更多还原