【摘要】 已有的勘探实践证实,储层预测是洛带气田遂宁组气藏描述的关键,只要能预测到储层发育区,基本上也就是油气富集区。遂宁组地层为湖相沉积,储层为砂泥岩互层,厚度普遍较薄,储层是相对高波阻抗,但波阻抗差异小,有效储层预测困难。通过对遂宁组气藏储层“低频、强振幅”地震响应特征形成机理分析,认为亮点预测模式有着一定的实用性,但陷阱也较多,地震相和层序地层特征分析简单而实用。利用三维可视化技术刻划储层展布,较清晰地描述了洛带气田遂宁组一段气藏的展布特征,并且预测了遂宁组气藏二段的展布。更多还原

【Abstract】 Practice has shown that reservoir prediction is the key to the description of Suining Formation gas reser-voir in Luodai gas field, Sichuan province, and the predicted reservoirs basically coincided with gas enrichmentzone. The Suining Formation is of lacustrine facies, and reservoirs are interbedded sands and mudstones with rel-atively high wave impedance. Effective reservoirs were hard to predict because they are relatively thin, and low inwave impedance contrast. The characteristics of low frequency and high amplitude of the reservoirs revealed thatbright spot prediction is a useful technique, but potential pitfalls may stem from the careless use of the bright spotprediction. Analysis of seismic facies and sequence stratigraphic characteristics provides an applicable approach.With 3-D visualization techniques, the gas reservoir of the segment one of Suining Formation was delineated, andthe extent of the gas reservoir of the segment two of Suining Formation was inferred.更多还原