Rock typing from cored intervals to all wells with method of decision tree
Xinglong Wang, Chen Li, Peiyuan Chen · IOP Conference Series Earth and Environmental Science · 2020
Abstract Rock typing is a fundamental work in geology study of oil and gas field. Generally, it is difficult to define a quantitative relationship to expand the classification from cored intervals to all wells with the traditional method based on geologic origin analysis, when rock of complex pore structure is confronted. On the basis of conventional core analysis and well logs, the authors propose a workflow to extend rock typing from cores to all wells with the method of decision tree. In the study case of F oilfield from Middle East, the method and workflow not only predict the rock type on wells, but also get satisfying precision of permeability impetration. Therefore, when data used to quantify pore structure is scare and traditional rock typing method is impossible, the method and workflow founded on decision tree could be a universal alternative.