摘要
实践证明,岩心钻探取心率的频率分布是偏态的。应用正态分布对取心率进行频率估计可能会有较大偏差,而应用贝塔分布的频率估计,效果较好。据贝塔分布估计的频率,还可对钻探取心的工序能力作出判断,并应用控制图进行工序控制。
It is practically proved that frequency distribution of drill-core recovery is partial. Frequency estimation of drill-core recovery by using normal distribution may show a relatively great deviation, but the effect of frequency estimation by using Beta distribution will be better. The frequency estimated by Beta distribution can be used to judge the process capability of coring and to control the process by quality control chart.
