【摘要】 渤海海域秦南凹陷勘探程度低,在少井条件下面临古近系储层预测难度大、地层岩性圈闭识别刻画难度大和复杂岩性储层识别难度大等勘探难题。在常规地质手段无法有效解决该区勘探问题的情况下,通过石油地质条件综合研究和技术攻关,建立了以地质模式为指导的地质-地震一体化储层预测技术、精细层序格架约束下的地层岩性圈闭识别及刻画技术和复杂岩性储层岩性识别技术等3项关键技术;并在秦南凹陷进行了应用,发现了秦皇岛29-2西、秦皇岛29-2东等地层岩性油气藏,并落实了一系列具有良好勘探潜力的地层岩性圈闭,对秦南凹陷地层岩性油气藏的进一步勘探起到了很好的推动作用,也为其他地区的地层岩性油气藏勘探提供了借鉴作用。更多还原

【Abstract】 Qinnan sag in Bohai sea is low in terms of exploration degree.Based on the sparsely drilled wells,it is difficult to predict reservoirs,identify and depict stratigraphic-lithologic traps,and identify the complex lithologic reservoirs.These difficulties cannot be solved by conventional geologic means.Therefore,three key techniques were developed via the comprehensive study of petroleum geology and technical campaign,including the geology-seismic integrated prediction of reservoirs guided by ageological model,the identification and depiction of stratigraphic-lithologic traps under the fine sequence stratigraphic framework,and the lithological identification of complex lithologic reservoirs.Their applications have resulted in quite good exploration consequences in Qinnan sag.Many stratigraphic-lithologic reservoirs were discovered,such as QHD29-2 W and QHD29-2E.A series of good potential stratigraphic-lithologic traps were identified.These key techniques can play a significant role in the further exploration for stratigraphic-lithologic reservoirs in Qinnan sag,and provide the reference basis for stratigraphic-lithologic reservoir exploration in other areas.更多还原