摘 要:介绍河南油田引进的粒度数据处理及沉积环境识别 系统(GSA、GPER)原理并进行测试。粒度分布是一个混合 正态粒度( Φ)分布;沉积环境决定了子正态分布组合形式 即子正态分布组合与沉积环境有一定的对应关系。利用数 学方法求解各个子正态分布参数这些数据将具有最全面、 最简洁的指相意义。系统采用 BP 神经网络完成子正态分 布参数组合到沉积环境的复杂对应关系从而进行沉积环境 识别。
关键词:粒度分布;神经网络;(混合)正态分布;沉积环境
Abstract:T he sedimentary environment identification of parti cle-size distribution (GSA GPER) and the pattern recognition technique of back propagation neural networks are introduced. Particle-size distribution is a mixed gaussian distribution.T he combinatorial form of sub-gaussian distributions is fixed by sedi mentary environmentits parameters can be determined by mathematical methodbut also have allsided and conise sign (characteristic )for saedimentary environment.T he complicated relationbetween these parameters and sedimentary environ mentis cleared by BP neural networks.
Keywords: Particle-size distribution;BP neural networks; (mixed) gaussian distribution;sedimentary environment