【摘要】 太平油田位于义和庄凸起北坡东部,主要含油层为馆陶组下段发育的辫状河储层。河流相频繁的决口、改道及辫状河流相砂体发育位置和砂体空间配置关系的特殊性,使得其在地震剖面上产生了反射假象,从而使对辫状河储层层位的追踪及砂体的描述变得异常困难。从馆陶组下段辫状河储层的发育特征及地震观测因素出发,阐述了馆陶组下段辫状河地震反射假象产生的原因。提出了利用地震资料分频解释技术和设计多井约束反演可较为准确地识别辫状河储层的反射假象。更多还原

【Abstract】 Taiping Oilfield lies in the east of north slope of Yihezhuang Uplift. Braided stream reservoirs in lower Guantao Formation are the main oil-bearing formations in the oilfield. Frequent crevasse and diversion of fluvial facies and the particularity of development position and space matching relation of sandbody of braided stream facies result in false appearance of reflection in seismic profile. So the identification of reservoir horizon and the description of sandbody in braided river become very difficult. We explain the false appearance of seismic reflection from the characters of braided river reservoir and factors of seismic observation of the braided stream in lower Guantao Formation. Application of frequency division interpretation technique of seismic data and multiwell constrained inversion can identify the false appearance of the reflection in the braided river reservoirs.更多还原