【摘要】 渤海海域隐蔽油气藏勘探总体上刚刚起步,面临少井条件下隐蔽圈闭精细刻画和成藏条件综合分析等困难,缺乏一套行之有效的技术系列。通过技术攻关与组合,创建了主控因素约束下的主线式精细层序分析技术、地质模式指导下的地质-地震一体化储层预测与描述技术、岩性地层圈闭精细描述和隐蔽油气藏综合评价技术等4项关键技术,并在石臼坨凸起及周边、黄河口地区和辽东湾地区进行系统应用,推动了多个隐蔽油气藏的发现,新落实了一批有利的隐蔽圈闭目标,取得了很好的勘探成效,对其他断陷盆地隐蔽油气藏勘探具有较好的借鉴意义。更多还原

【Abstract】 Because a start has just been made in exploring for subtle reservoirs generally in Bohai water,it is difficult to depict subtle traps refinedly or to analyze accumulation conditions comprehensively due to less drilled wells,with an effective technique series absent.Therefore,four key techniques were created through tackling technical problems and making technical combination,including the main-line type of refined stratigraphic-sequence analysis under the dominated controls,the geological-seismic integrated prediction and description of reservoir guided by a geological model,the refined description of lithologic and stratigraphic traps and the comprehensive evaluation of migration and accumulation in subtle reservoirs.Their systematical applications have resulted in quite good exploration effects in Shijiutuo rise and its surrounding areas,Yallow River mouth and Liaodong bay,with the discovery of multiple subtle reservoirs been promoted,and a group of new favorable subtle prospects been identified.These key techniques may be good references to the subtle reservoir exploration in other rifted basins.更多还原