【摘要】 对济阳坳陷1995年以来预探圈闭的资源量、分布层系、埋藏深度和类型进行统计,分析了东营、沾化、车镇、惠民4个凹陷预探圈闭随勘探程度提高的变化规律。结果表明:预探圈闭的层系、类型和埋藏深度等分布不均衡,年度不同类型圈闭升级率差异较大,各凹陷预探圈闭呈现不同的变化规律;深层和前第三系的圈闭勘探逐步增加,岩性类圈闭勘探相对比较成熟,潜山类圈闭勘探已经有较大发展,地层等其他类圈闭勘探还属于初级阶段;尽管近年来储备圈闭预探投入一直稳定在较高水平,但是由于地质认识、储层预测水平和地震资料分辨率等方面的限制,新发现的圈闭升级率不断下滑,有效圈闭储备量明显不足。结合非构造油气藏勘探的特点,认为济阳坳陷深层、前第三系和非构造圈闭有较大的潜力,通过理论和技术创新,仍然具有较大发展前景和广阔的勘探空间,圈闭勘探总的发展趋势符合螺旋式上升的基本规律。更多还原

【Abstract】 The resource extent, distribution of layer system, burial depth and type of traps preliminarily prospected since 1995 in Jiyang depression are counted up, the changing rule of the preliminary prospecting traps of 4 sags, such as Dongying, Zhanhua, Chezhen and Huimin, are analyzed. The result shows that the layer system, type and depth is not well-distributed, annual upgrade rate of different type trap is different, the trap of each sag has different changing rule; the explorations for the traps in the deep and Palaeogene system gradually increase, the exploration is relatively ripe for lithology trap, developed for burial hills, which is in the primary stage for stratigraphic traps and others; investment in the preliminary prospecting of reserve traps is at higher level at all times, upgrade rate of trap of the newly found gradually decrease and the reserve volume of effective trap are not enough owing to the limitation of geologic knowledge, reservoir prediction and seismic data resolution. Combined with characteristics of non-structural petroleum exploration, the deep, paleogene system and non-structural traps are considered to be potential and good exploration prospects, the general trend of the trap exploration correspond with the basic rule of spiral raise更多还原