Introduction

One of the important environmental issue in the oil and gas industry is the interaction between formation water and meteoric groundwater. Despite the vast exploration techniques used in the oil and gas industry, but statistical analysis in the environmental analysis hasn’t bee fully developed (D. E. Irawan, Iqbal, and Maulana 2015). Univariate and bivariate techniques have already frequently used in the environmental study however the application of multivariate analysis/statistics is still very low. This paper is a continuance from a IPA paper discussing the importance of multivariate analysis in sample classification (D. E. Irawan, Iqbal, and Maulana 2015).