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Predicting uniaxial compressive strength from log parameters

Conference ·
OSTI ID:7075797
Models for prediction of in-situ rock behaviour often suffer from lack of relevant input data, especially rock strength data. Rock mechanical testing of cores provides only discrete data points. This paper presents a method which produces a continuous plot of uniaxial compressive strength. The method is based on correlating standard log parameters with laboratory measured rock strength data. When a correlation has been established, it can be applied to new wells in the same field, giving a strength plot by computer processing of the necessary logs. The method has been applied to two wells in a North Sea field, resulting in a statistically significant correlation. Proper depth adjustments between core depth and log depth are essential. It is further important that the lithologies of interest are represented among the core material.
Research Organization:
RockMech A/S
OSTI ID:
7075797
Report Number(s):
CONF-861080-
Country of Publication:
United States
Language:
English