基于可钻性的地层分层方法

Based on Drillability Stratum of Layered Approach

根据测井资料可以得到整井每一个测点的岩石的可钻性级值。在实际的应用中是不可能逐一地去分析每一个点的岩石可钻性级值,只能是按岩石可钻性,对整井段进行分层,然后对每一个井段进行分析。数学上有一种按照样本的、彼此相近的程度进行分类的理论,称为模糊聚类。人们利用它的基本原理在岩土工程中进行了膨胀土的分类、砂土的地震液化判别等。利用多参数因子的模糊聚类分析,对测井资料实测得到的原始剖面中分布与性质相近的地层进行合理的模糊聚类合并。根据岩石可钻性级值采用模糊聚类的方法对井段进行分层,求出每一段的平均岩石可钻性级值、最高和最低的值,最终实现分层。该方法的实现将使钻井速度大幅度提高,钻井成本也会大大降低。

According to well-logging data,the whole point of each measuring drillability can be got.In practical applications one by one to one point for each drillability is not possible to analyzd,can only according to drillability,well stratified the entire paragraph,and then for each well to carry out the analysis.There is a sample similar to one another according to the degree of classification theory in mathematics known as fuzzy clustering.People use the basic principle in geotechnical engineering carried out the classification of expansive soils,sand liquefaction and other seismic.Analyzing factors of multi-parameter fuzzy cluster,the raw log data to be measured and the nature of the distribution profiles similar to the fuzzy cluster reasonable strata combined.According to drillability,fuzzy cluster method for the well stratified section,calculate the average of each section of drillability,maximum and minimum drillability,and ultimately hierarchical.Implementation of this method will greatly increase the speed drilling,drilling cost will be greatly reduced.