SHORT SUMMARY - 1 2 Contents 3 SHORT SUMMARY This lab...

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3 SHORT SUMMARY This lab report discuss on calculating saturations of liquid by using the retort method. After putting four different cores in the retort, one increased the temperature to vaporize the pore fluids. In order to measure the pore fluids, the vapor were then passed through a cold water bath which cause the vapors to condense into liquid state. The liquids were collected and their volumes were measured by graduated cylinders. Because some components in oil were not heated enough to vaporize and some were not chilled enough to condense, correction factors must be determined before calculating gas, oil, and water saturation in oil- saturated brine- flooded core and brine-saturate oil-flooded core. The amount of water contains in clay in the brine saturated core can be determined by plotting the volume of water collected versus time. Some experimental errors were experienced during the experiment. Experimenters had some safety precautions throughout the lab as working with high temperature objects and hazards. The following section discusses the overall objective of the experiment. OBJECTIVE/GOAL One of the most important tasks of petroleum engineering is determined the total reservation of hydrocarbon in a reservoir. The task can only be complete with the available of the liquids saturations information. The purpose of this lab is to deal with calculation the saturation of oil, gas, and water in any given core by using the retort. The retort allowed the pore fluids to vaporize and volatize by changing the temperatures. This lab also reminds experimenters about the properties of hydrocarbon fluids as some hydrocarbon were not able to vaporize or volatized at the given temperatures. Because of the above reason, a plot of the volume of oil collected from the 100% oil saturated core versus its calculated pore volume was made in order to correct the volumes of oil collected in the experiment. In this lab, the amount of water given off the clay in brine saturated core can be determined by plotting the volume of water versus time. By retorting, all volumes of liquids in cores were available, saturates were calculated by using the formula and theory which discussed in the next section.
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4 BACKGROUND/ THEORY This section talks about the general theories behind fluid saturation and the all equations used to calculate the different fluid saturations in the experiment. Reservoirs generally contain several fluid phases: oil, water, and gas. The amount of each fluid phase present in the pores is called the fluid saturation. With the information saturations of liquid in a core, the original oil, gas in place can be easily determined. When heated the retort, the fluids in the pore space passed through their bubble point curves and formed vapors. As needing to measure the volume of liquids by graduated cylinders, the vapors were allowed to pass through cold water bath. When passing through their dew point curves, vapors began to condense in the cylinders. Because components with large molecular weights
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This note was uploaded on 11/10/2010 for the course PGE 323K taught by Professor Lake during the Spring '08 term at University of Texas at Austin.

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SHORT SUMMARY - 1 2 Contents 3 SHORT SUMMARY This lab...

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