Formation Microscanner as a Measure of Heterogeneity in Core-Log Studies. TopicalReport, November 1989-June 1991

摘要

The Formation MicroScanner (FMS) tool makes extremely dense conductivitymeasurements, approximately 7000 per foot. These measurements have been most commonly used to generate images approximating core photographs. These images have been used for geological interpretation and petrophysical properties of the reservoir. The main issue addressed in the thesis is the comparison of rock property measurements made at different length scales. Small core plugs are often taken to represent larger sections of conventional core and comparisons are made with logs. FMS data can provide a measurement of the amount of variation that can be expected from this process. The measurement can be used to estimate the required sampling density of core plugs necessary to represent the formation in the vicinity of the wellbore to a specified degree of accuracy. It can also be used to determine the expected degree of agreement when comparing core and log data.