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本文运用地震地层学的观点和方法,首次对泌阳凹陷的主要储油层段(核三上段)进行了地震层序的划分、地震相分析及层速度等方面的研究。作者重新划定了地震层序;对相应的构造作了分析,提出了新的认识;通过振幅、频率、连续性、丰度和反射构形等信息的综合归纳,将凹陷划分为八类地震相区,并转换为岩性分区;经大量速度资料的分析,发现层速度平面变化中的低速异常区明显地与已知含油区吻合,而沉积中心的高速异常区则反映了白云质成分的增高。最后,综合前述各种资料,作了未知区的含油评价。
In this paper, the seismostratigraphy and methods are used to study the division of seismic sequences, seismic facies analysis and layer velocities in the main reservoir section of the Biyang depression (upper third of the core). The author redefined the sequence of the earthquake, analyzed the corresponding structure and proposed new understanding. According to the comprehensive induction of amplitude, frequency, continuity, abundance and reflection configuration, the depression was divided into eight types of earthquakes Phase region and converted to lithologic zoning. After analyzing a large number of velocity data, it is found that the low-velocity anomalous region in the plane velocity variation obviously agrees with the known oil-bearing region while the high-velocity anomalous region in the sedimentary center reflects the Increase. Finally, based on the above mentioned information, the oil evaluation of the unknown area was made.