阿尔及利亚大深度低幅度构造地震解释技术应用及效果
|
摘要
阿尔及利亚OUED MYA含油气盆地438B区块勘探目标以大深度、低幅度构造—岩性复合油气藏为主。为了在该区块重获油气,增储上产,本文针对地震资料分辨率低、信噪比不高的资料特点,综合运用振幅、相位和频率等地震属性解释层位和断层;在速度分析的基础上进行变速构造成图;落实了低幅度构造,理清了构造带的展布规律。同时运用波阻抗反演、谱分解、烃类检测和其他属性提取与分析技术确定了储层和油气可能的分布范围,取得了良好的效果。首口钻井即获高产油气流,打开了该区的勘探局面。
The 438 B block of Algeria OUED MYA oil-bearing basin is characterized by deeper and low-amplitude structural-lithologic composite oil/gas reservoir.In order to regain oil and gas and improve reserve and production in the block and in view of the data characters of low seismic data resolution and lower S/N ratio,the paper integrative usage of such seismic attributes as amplitude,phase and frequency to interpret strata and fault,carry out variable velocity mapping on the basis of velocity analysis;define low-amplitude structure and clarify the distribution law of structural belt.At the same time,Using wave impedance inversion,spectrum decomposition,hydrocarbon detection and other attributes detective and analytic techniques to study the possible distribution range of reservoir and oil/gas,achieving good results.The high-productive oil-gas stream has been acquired in first drilling,opening up the phase of exploration in the range.
The 438 B block of Algeria OUED MYA oil-bearing basin is characterized by deeper and low-amplitude structural-lithologic composite oil/gas reservoir.In order to regain oil and gas and improve reserve and production in the block and in view of the data characters of low seismic data resolution and lower S/N ratio,the paper integrative usage of such seismic attributes as amplitude,phase and frequency to interpret strata and fault,carry out variable velocity mapping on the basis of velocity analysis;define low-amplitude structure and clarify the distribution law of structural belt.At the same time,Using wave impedance inversion,spectrum decomposition,hydrocarbon detection and other attributes detective and analytic techniques to study the possible distribution range of reservoir and oil/gas,achieving good results.The high-productive oil-gas stream has been acquired in first drilling,opening up the phase of exploration in the range.
引文
[1]陆基孟主编.地震勘探原理.山东东营:石油大学出版社,1993
[2]袁秉衡主编.应用地震技术研究储层.北京:石油工业出版社,1992
[3]徐礼贵,郑良合主编.油气勘探新领域物探综合研究进展.北京:石油工业出版社,2003
[4]凌云研究组.储层演化地震分析.石油地球物理勘探,2004,39(6):672~678
[2]袁秉衡主编.应用地震技术研究储层.北京:石油工业出版社,1992
[3]徐礼贵,郑良合主编.油气勘探新领域物探综合研究进展.北京:石油工业出版社,2003
[4]凌云研究组.储层演化地震分析.石油地球物理勘探,2004,39(6):672~678
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