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研究了地震数据结构特征与含油气性的关系 ,从而可在地震剖面上定量解释油气层 ,进而对探井、评价井等进行钻前油气预测。 15个构造 19口井的钻前油气预测结果表明 ,预测准确率可达 80 %以上 ,取得了显著的经济效益。本方法适用范围 :岩石类型为陆源碎屑岩 ;沉积环境为海相、海陆过渡相 (三角洲相 )和陆相 (河流相、湖泊相 ) ;深度范围为 80 0~ 5 0 0 0 m;预测岩层厚度为 10 m以上 (主频 5 0 Hz左右 )
The relationship between seismic data structure features and oil and gas bearing properties is studied, so that the oil and gas layers can be quantitatively interpreted on the seismic profiles, and the pre-drill oil and gas prediction can be made for exploration wells, evaluation wells and the like. The prediction results of pre-drilling hydrocarbon in 15 structures of 19 wells show that the prediction accuracy can reach more than 80%, and remarkable economic benefits have been achieved. The scope of application of this method is that the rock type is terrigenous clastic rocks; the sedimentary environment is marine, transitional facies (delta) and continental facies (fluvial facies, lacustrine facies); the depth ranges from 80 0 to 500 m; prediction Rock formation thickness of 10 m or more (frequency 50 Hz or so)