Stock tank oil

Stock tank oil

Stock tank oil refers to the hydrocarbon component of crude oil that has been separated from basic sediments and surface gas through a process of dehydration. The gravity of stock tank oil is measured at 37°API, and its volume is calculated by weighing and measuring its density at 15°C.From: The Chemistry and Technology of Petroleum [2019], Petroleum Reservoir Rock and Fluid Properties [2019], Phase Behavior of Petroleum Reservoir Fluids [2019]

Asphaltene

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Published in Jon Steinar Gudmundsson, Flow Assurance Solids in Oil and Gas Production, 2017

Jon Steinar Gudmundsson

The SARA-values from West Africa reported by Aske (2002), if plotted in Figure 3.3, would coincide with the North Sea data. However, the stock-tank oil density was much narrower, in the range 0.873–0.921 g/cm3 $ ^{3} $ , making it unreliable to evaluate the trends in the SARA fractions. The asphaltenes-values were in the range 1–6.6% wt., higher than the North Sea values.

Integrated reservoir management in a Niger Delta oil rim field

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Journal Information

Published in Cogent Engineering, 2020

Yetunde M. Aladeitan, Akeem O. Arinkoola, David O. Ogbe

A three-phase, three-dimensional, dynamic, black-oil model of Reservoir A in the Niger Delta was built from a static model using a commercial software. The oil rim height is an average of 75 ft, and the reservoir has a large gas cap overlying a large aquifer (Figure 2). Table 1 summarizes the reservoir, rock and fluid properties used to build the dynamic model. The grid dimensions are 58 × 18 × 40 in the X, Y, and Z directions with grid sizes of ΔX = 180 ft, ΔY = 50 ft, ΔZ = 16 ft, respectively. PVT data and relative permeabilities were derived from correlations using input data obtained from an analog field. The reservoir is divided into two vertical regions separated by a thick-shale layer. After model initialization, the stock tank oil in place (STOIIP) is about 56 million stock-tank-barrels (MMSTB), and the initial gas in place (IGIP) is approximately 966 billion standard-cubic-feet (BSCF). .

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Asphaltene

Integrated reservoir management in a Niger Delta oil rim field