【摘要】 在分析泌阳凹陷南部陡坡带地质与地震资料的基础上,认为该区寻找岩性油气藏是主要目标。文中针对该区资料品质差、边界大断裂地震资料处理归位不准确、深层资料信噪比低、圈闭落实程度低等问题,实施了新的攻关方向:①优化三维地震采集因素及观测系统设计;②开展叠前深度偏移处理,建立准确的偏移速度模型,使地震数据正确归位;③综合采用层序地层学、精细构造解释、地震相技术、相干体沿层属性、油井约束反演等各种地球物理技术,对陡坡带砂岩体储层进行预测和综合评价。查明了一批不同深度、不同类型的局部圈闭,经部署钻探,在陡坡带浅、中、深层均发现油层,勘探效果显著,在栗园地区新增探明石油地质储量828.29万t,在梨树凹地区新增预测石油地质储量385.79万t,为油田增储稳产起到了积极作用。更多还原

【Abstract】 Based on the analysis for the geological and geophysical data on the south steep slope in the Biyang Depression, it is believed that looking for lithology reservoirs in this area should be the main objective. Due to poor data quality in this area, the inaccurate imaging of large boundary fault, low signal to noise ratio for deep layers and low trap confirmation degree, the direction of research and studies was determined as follow: (1)optimizing the 3d seismic acquisition factors and geometry designing; (2)conducting pre-stack depth migration, building accurate velocity model and imaging the seismic data correctly; (3)based on sequence stratigraphy, seismic facies technology, coherence data volume stratal attributes, well constrained inversion and other geophysical techniques, the prediction and integrated evaluation for the sand reservoirs on the steep slope were conducted. After applying the technologies and techniques in the exploration and production in the Depression, some traps in different depth and with different types were identified, some wells were drilled in the shallow,middle and deep targets on the steep slope and oil were found there, it is a success for the exploration. It is noticed that in Liyuan area the incremental proven reserves is 8,282,900 Tons, in Lishu area the incremental proven reserves is 3,857,900 Tons.The high precision 3D seismic research and studies played an important role in increasing new proven reserves and maintaining oil production on the steep slope in Biyang Depression.更多还原