关键词: 岩石可钻性, 支持向量机, 数学模型, LS-SVM, 测井参数

Abstract:

Drillability has a direct impact on the determination of drill bit type selection and drilling rate forecast，the major oil fields at home and abroad for the determination of lithology are very serious.However，suitability for the conditions of oil and gas wells drillability has not yet been completely resolved.In the bit type selection，based on the current domestic difficulties and problems that exist，the use of LS-SVM to strike a drillability practical method is presented.Logging data are selected as parameter，with LS-SVM Support Vector Machine technology，drillability mathematical model is built，and the model is applied to well DU4 SC Oilfield and good result achieved.

Key words: drillability, support vector machine, mathematical model, LS-SVM, well logging parameter