Porosity is determined using a CT-scan of the core and "Procedure" section explains how to brine permeability was found.
To investigate the effect of geological characteristics inside core sample on rock properties, X-ray scan of the core samples was taken by Microfocus X-ray CT.
As was previously mentioned, the purpose of the catheter sheath is to protect the patient from the mechanical scanning of the inner core and to ensure that the imaging optics do not get contaminated with bodily fluids.
The two sheath portions were bonded together and the distal tip was sealed using 353NDT epoxy (Epotek) to both protect the patient from the mechanical scanning of the inner core and to ensure that the imaging optics do not get contaminated with bodily fluids.
The scans of this core sample were composed of 3,900 slices, each of which consisted of 1,024 × 1,024 pixels.
RNA samples were submitted for labeling, hybridization, and scanning at the core facility of the McArdle Laboratory for Cancer Research (Laboratory of Dr. Chris Bradfield, Madison, WI).
Figure 1 shows an overview of the various Rotterdam Study cohorts, the time of their (re- examination visits, and the implementation of Mre- examinationthe core protocol of the Rotterdam Study in 2005.
The influence of capillary end effects is eliminated in the calculation of saturation, since only the center section of core was scanned (both 1 cm of the core inlet and outlet end were not scanned) via X-ray CT technique to obtain water saturation profiles.
The main components of the experiment were as follows: (i) rock selection and preliminary testing of coreplugs for permeability/sorption properties; (ii) computerised tomography (CT) scanning of selected core (before and after core-flooding); (iii) core-flooding with synthetic brine to give water saturation; (iv) core-flooding with oil; (v) chemical analysis of produced fluid samples (brine, oil).
Sintered glass cores are used in this study because they have a more homogeneous permeability distribution compared to rock cores as can be seen in the radial CT-scan of one of the cores (Fig. 2).
