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APPLICATIONS

 ■ Core evaluation before removal

from liner

 ■ Heterogeneity analysis

 ■ Fracture and fracture-orientation

identification

 ■ Rock-type and flow-unit determination

 ■ Reservoir quality estimation

 ■ Core sample location selection for

physical or digital core analysis

BENEFITS

 ■ Quickly evaluate core condition

and properties

 ■ Decide core preservation needs before

removing sample from liner

 ■ Extract detailed image of potential

core locations

 ■ Understand fracture mechanisms

at whole-core scale

 ■ Archive a digital library of whole core

FEATURES

 ■ Closely spaced images of CT density

of whole core

 ■ Interactive application display of CT

scans along core

 ■ Movie-format output of display selection

 ■ Log of density and effective atomic number

 ■ Total and spectral gamma ray log

 ■ Input for TerraTek HRA* heterogeneous

rock analysis services

 ■ Output in Techlog* wellbore software

platform format

CoreFlow* digital rock and fluid analytics services provide a 3D image of a whole-core section

using many cross-sectional slices from a computed tomography (CT) X-ray scanner. Slices are

spaced as closely together as half a millimeter and extend the length of the whole core section.

The 3D volume can be viewed using a software application that animates the result, sequentially

showing each slice. Additionally, static images show two perpendicular views along the core

axis and one that unwraps an outer view of the core. Log traces show the rock bulk density and

effective atomic number, with each point representing one slice. Total and spectral gamma logs

further characterize the core.

X-ray information is acquired using a multislice, helical CT scanner that rapidly acquires a

 tomographic image of the rock. The scans can be obtained while the rock is inside an aluminum

or plastic liner, offering a quick look at the condition of the core before it is removed from the

protection of the liner. The scanner operates in dual-energy mode at two X-ray energies to solve

for the bulk density and the effective atomic number, which provides mineralogical information

about the sample. This information is combined with a core gamma log to define rock classes

using TerraTek HRA heterogeneous rock analysis services.

Whole-Core CT Scanning from CoreFlow ServicesDigital rock and fluid analytics services for characterizing whole-core samples

A core sample is positioned for CT imaging using a dual-energy multislice scanner.

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*Mark of Schlumberger

Other company, product, and service names

are the properties of their respective owners.

Copyright © 2013 Schlumberger. All rights reserved. 13-TS-0170

CoreFlow services provide a wealth of information about the whole

core, helping analysts select samples for additional core analysis and

imaging while the core material is still in a liner. Fractures and their

relative orientations are clearly identified, and rock types and relevant

flow units can be determined from evaluation of the CT images.

The Schlumberger CoreFlow services software application provides a cross-section view of the core sample (right). The software defines the location of the cylindricalunwrap log in Track 1, which also displays a total gamma log and a potassium log. Tracks 2 and 3 indicate perpendicular longitudinal sections, with potassium and uranium logsin Track 2 and atomic number and CT number in Track 3. Track 4 is an optional track that indicates the strength index log and core photo. Track 5 shows bulk density and thephotoelectric factor as well as the TerraTek HRA services result based on measurements obtained using CoreFlow services.

Whole-Core CT Scanning from CoreFlow Services