摘要
陆相断陷具有多物源、近物源、窄相带、变化快的沉积特点,易于形成多种砂体,多变的沉积类型为形成岩性地层油气藏提供了有利条件。但因地质特征与地球物理响应复杂,为利用地震资料进行储层预测带来难度,影响勘探效果。根据陆相断陷中三角洲前缘砂体、扇三角洲砂砾岩体、湖底扇砂砾岩体和河流相砂体这4种主要类型沉积砂体的地质与地球物理特征,研究了有针对性的地震储层预测方法与技术思路。经实际应用与资料验证,有较高的精度和吻合率。
Continental rift has such sedimentary features as multi-provenance, proximal provenance, narrow facies belt and frequent change, so it is ready to deposit multiple sand bodies. Multivariant sedimentation types provide favorable conditions for the formation of lithostratigraphic hydrocarbon reservoirs. However, complex geologic characteristics and geophysical response bring difficulties to the application of seismic data to reservoir predication, and thereby influence exploration results. Based on the geological and geophysical characteristics of four main sedimentary sand bodies in continental rifts, i.e. the delta front sand body,the fan-delta sand-conglomerate, the lake floor fan glutenite, and the fluvial sand body, the seismic reservoir prediction methods and technical route are studied and are proved to have higher accuracy and coincidence after being verified by practical application and data.
出处
《中国石油勘探》
CAS
2010年第2期55-58,共4页
China Petroleum Exploration
关键词
陆相断陷
沉积特征
地震反射
储层预测
continental rift, sediment characteristics, seismic reflection, reservoir prediction
