【摘要】 四川盆地东部地区龙潭末期形成的"开江—梁平"海槽古地貌与长兴期的持续海侵背景共同控制了该区域长兴组生物礁的生长形态及分布规模,通过数值模拟正演分析,建立了生物礁的地震响应模式,得到了生物礁地震剖面和正演模拟的生物礁模式具有较好相似性的结论。利用三维地震资料和钻井资料,进行地震相与沉积相分析,识别出了长兴组末期"台地边缘生物礁相"相带,据此可推断出生物礁的形态和平面展布特征。另对生物礁的储层预测和测井曲线进行研究,事实表明这两种方法在生物礁滩相储层上也有明显的效果。更多还原

【Abstract】 The paleo-landform of "Kaijiang-Liangping" trough formed at the end of Longtan period and the continuous transgression of Changxing period jointly control the growth morphology and distribution of Changxing Formation bioherm.Based on numerical simulation analysis,the authors established the seismic response model and revealed that the bioherm forward modeling of seismic profiles and the bioherm model have good similarity.3D seismic data and drilling data were employed to make seismic facies and sedimentary facies analysis and,as a result,the "platform marginal reef-phase" phase belt formed at the end of the Changxing Formation was recognized.On such a basis,the shape and distribution characteristics of the bioherm were inferred.The wave impedance inversion and logging curves were also studied,and the results show that these two methods also have obvious effects in the prognostic work.更多还原