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Empirical Equations For The Surface Gas Gravity of Nigerian Associated Gas


PU Ohirhian
OA Olafuyi

Abstract

The surface gas gravity is a quantity that is usually experimentally measured. This study presents a set of equations that can be used to estimate this parameter. The data used, came from the experimental pressure volume temperature (PVT) data of the gas gravity of gas associated with Niger Delta crude oil. The crude oil is subdivided into 3 broad groups in order of ascending order of American Petroleum Institute (API) gravity. The accuracy of the calculated surface gravity is determined through statistical error analysis. Absolute errors range between 0.423 and 11.643 percent. The standard deviation is 5.291

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eISSN: 1116-4336