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STATISTICAL DISTRIBUTIONS AND CORRELATIONS OF PETROPHYSICAL PARAMETERS IN THE ARAB‐D RESERVOIR, ABQAIQ OILFIELD, EASTERN SAUDI ARABIA

The Upper Jurassic Arab‐D is a complex carbonate reservoir present in the Eastern Province of Saudi Arabia. It has been subdivided into five zones on the basis of porosity. A statistical analysis of the extensive dataset from the three productive zones in the reservoir unit (Zones 1, 2 and 3) has shown that patterns of well‐log porosity and core porosity distributions are strikingly similar in each zone, but that the means are not. Consistently higher mean values observed in core distributions can be explained by a possible bias in core selection and/or differences in the measurement conditions. The results also show that each zone has a distinctive pattern of porosity distribution, reflecting its general lithological character.