应用重力资料对哈萨克斯坦南部S盆地进行基底岩性填图
|
摘要
在哈萨克斯坦南部S盆地,利用地震及钻井数据的控制,对剩余重力场进行分层剥皮反演,即将基底上覆的侏罗系、白垩系及第三系产生的重力异常剥去,最后得到相当于基底的剩余重力异常。据此,以视密度反演结果为初始密度参数,在已知资料约束下进行剖面正反演拟合,最终求得该区的视密度平面分布,并依靠深井基底岩性的密度特征和剖面特征对该区基底的岩性做外推填图,为基底岩性识别提供可靠资料。
In S basin of south Kazakhstan,using seismic and drilling data for controlling to carry out layered stripping inversion of gravity field,that is,stripping the gravity anomaly produced by Jurassic,Cretaceous and Tertiary overlying basement,and finally resulted residual gravity anomaly is equivalent to that of basement.Accordingly,taking the apparent density inverted result as preliminary density parameter to carry out forward and inverse fitting under the constraint of known data,and finally the planar distribution of apparent density in the area is gotten,and extrapolating lithologic mapping of basement in the area is carried out relying on the character of lithologic density of basement in deep well and character of section,providing reliable data for recognition of lithology in basement.
In S basin of south Kazakhstan,using seismic and drilling data for controlling to carry out layered stripping inversion of gravity field,that is,stripping the gravity anomaly produced by Jurassic,Cretaceous and Tertiary overlying basement,and finally resulted residual gravity anomaly is equivalent to that of basement.Accordingly,taking the apparent density inverted result as preliminary density parameter to carry out forward and inverse fitting under the constraint of known data,and finally the planar distribution of apparent density in the area is gotten,and extrapolating lithologic mapping of basement in the area is carried out relying on the character of lithologic density of basement in deep well and character of section,providing reliable data for recognition of lithology in basement.
引文
[1]潘校华等编.中亚含油气区中新生界油气形成和富集规律研究.石油勘探开发科学院国外油气田研究所,1995
[2]童晓光等编.世界石油图集.北京:石油工业出版社,2004
[3]Yang Zhanjun and Wei Yan.The gravity&seismicdata jointed formation separation technique for deepstructure study.BGP,CNPC
[4]Zheng Junzhang.Petroleum geology features in Turgaibasic.South Turgai Basin Re-Evaluation,2006
[5]William J.The utility of regional gravity and magneticanomaly maps,Hinze,SEG
[6]Blakely R J.Potential theory in gravity&magneticapplications.Cambridge university press,1996
[7]Zhang Bitao and Sun Ximing.Old gravity data proce-ssing and interpretation on the entire Aryskum depres-sion in the south-Turgai basin.BGP,CNPC
[2]童晓光等编.世界石油图集.北京:石油工业出版社,2004
[3]Yang Zhanjun and Wei Yan.The gravity&seismicdata jointed formation separation technique for deepstructure study.BGP,CNPC
[4]Zheng Junzhang.Petroleum geology features in Turgaibasic.South Turgai Basin Re-Evaluation,2006
[5]William J.The utility of regional gravity and magneticanomaly maps,Hinze,SEG
[6]Blakely R J.Potential theory in gravity&magneticapplications.Cambridge university press,1996
[7]Zhang Bitao and Sun Ximing.Old gravity data proce-ssing and interpretation on the entire Aryskum depres-sion in the south-Turgai basin.BGP,CNPC
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