泌阳凹陷陡坡带高精度三维地震攻关研究与效果
|
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。
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.
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.
引文
[1]邱荣华,田小敏,付代国等.泌阳富油凹陷油气深化勘探实践与认识.石油天然气学报,2007,29(2):42~44
[2]邱荣华.河南油田各探区勘探潜力与“十五”油气资源发展战略.河南石油,2001,15(1):1~6
[3]秦伟军,林社卿,程哲等.南襄盆地泌阳凹陷油气成藏作用及成藏模式.石油与天然气地质,2005,26(5):136~141
[4]邱荣华,付代国,万力.泌阳凹陷南部陡坡带油气勘探实例分析.石油与天然气地质,2007,28(2):605~609
[5]余功铭,张永华,梁运基.复杂断裂构造带三维地震勘探技术及效果.新疆石油地质,2007,28(1):101~104
[6]邱荣华,泌阳富油凹陷北部斜坡带浅层复杂断块群油气勘探.石油与天然气地质,2006,27(2):813~819
[7]方伍宝.三维叠前深度偏移的建模技术.石油物探,2002,41(2):132~135
[8]张荣红,余索玉,邬金华.陆相湖盆中沉积物供给因素对层序地层分析的影响.地球科学——中国地质大学学报,1997,22(2):139~144
[9]Prabir D.Architecture and facies pattern of a sublacustrine fan,J haria Basin,India.Sedi mentary Geolo-gy,2002,148:373~387
[2]邱荣华.河南油田各探区勘探潜力与“十五”油气资源发展战略.河南石油,2001,15(1):1~6
[3]秦伟军,林社卿,程哲等.南襄盆地泌阳凹陷油气成藏作用及成藏模式.石油与天然气地质,2005,26(5):136~141
[4]邱荣华,付代国,万力.泌阳凹陷南部陡坡带油气勘探实例分析.石油与天然气地质,2007,28(2):605~609
[5]余功铭,张永华,梁运基.复杂断裂构造带三维地震勘探技术及效果.新疆石油地质,2007,28(1):101~104
[6]邱荣华,泌阳富油凹陷北部斜坡带浅层复杂断块群油气勘探.石油与天然气地质,2006,27(2):813~819
[7]方伍宝.三维叠前深度偏移的建模技术.石油物探,2002,41(2):132~135
[8]张荣红,余索玉,邬金华.陆相湖盆中沉积物供给因素对层序地层分析的影响.地球科学——中国地质大学学报,1997,22(2):139~144
[9]Prabir D.Architecture and facies pattern of a sublacustrine fan,J haria Basin,India.Sedi mentary Geolo-gy,2002,148:373~387
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心