datasets (version 3.3)

rock: Measurements on Petroleum Rock Samples

Description

Measurements on 48 rock samples from a petroleum reservoir.

Usage

rock

Arguments

format

A data frame with 48 rows and 4 numeric columns.

rll{ [,1] area area of pores space, in pixels out of 256 by 256 [,2] peri perimeter in pixels [,3] shape perimeter/sqrt(area) [,4] perm permeability in milli-Darcies }

source

Data from BP Research, image analysis by Ronit Katz, U. Oxford.

Details

Twelve core samples from petroleum reservoirs were sampled by 4 cross-sections. Each core sample was measured for permeability, and each cross-section has total area of pores, total perimeter of pores, and shape.