The correlation of dry density and porosity of some rocks from the Karoo Supergroup: A case study of selected rock types between Grahamstown and Queenstown in the Eastern Cape Province, South Africa
| Autor: | C. Baiyegunhi, O. Gwavava |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | IOSR Journal of Engineering. :30-40 |
| ISSN: | 2250-3021 2278-8719 |
| Popis: | The correlation of dry density and porosity of some rocks from the Karoo Supergroup in the Eastern Cape Province of South Africa was carried out in order to establish a relationship between the two parameters that will possibly serve as a guide on the engineering design, especially on the type of casing materials to be used when considering fracturing of the Karoo for shale gas. The densities of rock samples were determined using the buoyancy determined volume. The correlation was determined by plotting a chart of particle density against the porosity and fitting a least squares line through the data. The average densityvaluesrange from 2.5258 - 2.7723cm -3 .The average porosity values range from 0.4931-3.3095 %.The correlation coefficient values R range from 0.9491 - 0.9982.The meanof the porosity values obtained from the model and those determined in the laboratory are 1.7459 and 1.7476 respectively. The variance and standard deviation are 6.29 × 10 −6 and 2.51 × 10 −3 respectively. It was deduced that the variables are closely correlated, thus |
| Databáze: | OpenAIRE |
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