Vertical sweep efficiency

Objective:The goal of this experiment is to show the impact of having different layered heterogenous formations which has been ignored so far in all the other experiments. So we will be conducting a vertical sweep efficiency test to see how it is going to be impacted. Experimental Description:We will be using a synthetic sandstone constructed by blasting sand and epoxy. The formation has 4 different layers that have different permeability values. We would also need naphtha and soltrol both dyed and clear for this experiment. The model formation is placed over a light table so that we can track the various fluids injected. Also because we have the same density on both ends we can have a cross flow between beds. The test will be repeated 3 times (M=1, M<1,M>1) Procedure:First of all we will be injecting dyed naphtha by opening the valve on the side to displace the clear naphtha to yield a mobility ratio of 1. Meanwhile we will be tracing the progress of the dyed naphtha on the tracing paper until they reach a break through on the other side of the model. After that is done we will be injecting clear soltrol to displace the dyed naphtha and imitate what we did earlier to get a mobility ratio less than 1. Next we will inject dyed naphtha but we will get a mobility ratio more than 1. After every thing is done we will have to refill the model with the clear naphtha that we started with. Discussion:After we have done our calculations it is safe to say that we can see the impact of mobility on the vertical sweep. As we can see in the calculations part we had a very low sweep efficiency when we had a mobility ratio more than 1 and this was no surprise considering our last experiment and the tracing paper itself. However the efficiency didn’t improve with a great margin when you considering lowering the mobility ratio to 1. On the other hand when the mobility ratio was less than 1 we see a very significant bump in the efficiency yielding almost 90% which was expected again based on our last experiments. It is safe to say that going with a mobility ratio less than 1 is always a good choice and yield the biggest amount of production. Conclusion:The experiment has perfectly illustrated the idea of how mobility would impact a heterogenous model and its vertical sweep efficiency. As we have mentioned in the discussion it is always a better choice to go with a lower mobility ratio to get a better sweep any errors might be resulted from any miscalculations along the way or human errors done in the lab itself. Objective The primary objective of the report is to allow the learner to investigate the way vertical sweep efficiency affects the displacement efficiency of a specific system. The displacement is the fraction of the original oil on place, which is recovered due to the sweeping of the injected fluid. This is prompted to the fact that learners usually disregard the vertical sweep by assuming it to be precisely 100%. Experiment Description The experiment comprised of an alternative coated sandstone block designed by blasting plus epoxy. Thus, four layers have diverse permeability designed utilizing sieve sand of grains. The phenolic end butts were put over the ends of the simulate borders. The experiment used naphtha plus soltrol that was pumped to flood the layers, as well as establish the variation of the vertical flood efficiency. Experimental Apparatus The experiment apparatus included four layers of synthetic sandstone and phenolic end butts that were put on the end of simulate bordersNaphtha and soltrol were used where it was pumped to flood the layers and determine the variations in the vertical floods. Procedure The epoxy that was coated with sandstone block is initially filled with clear naphtha. This will be followed by an injection of naphtha through dying that will displace clear naphtha that will generate mobility of ratio of 1. Then, the outlet valves will be opened and starting the timer, where the flow starts from the model. The tracing paper will be taped on the top of the sandstone block, and the dyed naphtha will flow. A similar process from the dyed naphtha will be repeated for soltrol. The last step will be to refill the core of the clear naphtha, and then the data will be collected and corrected. Discussion Based on the data, this effect of mobility ration is considerable. When MI=1, the vertical sweep efficiency after bed 2 reached a breakthrough of 0.529, when the MI<1, while the vertical sweep effectiveness at a similar place was at 0.87 when M>1, the vertical sweep efficiency was 0.47 based on these values. It will be concluded that the lower the MI. The more favorable the mobility ratio, the greater the vertical sweep efficiency is attained than devoid of cross-flow since the fluids expand past the expected layer plus invade additional space. Conclusion The experiment aimed to examine the effect of a heterogeneous, layered system on vertical sweep efficiency for three diverse mobility ratios, namely, M=1, M>1, as well as M<1. It was established that at M=1, the vertical sweep efficiency after bed 2 was at 0.527, while M<1 was at 0.88, and M>1 2 was at 0.39. This demonstrates that the lower the mobility ratio, the larger the vertical sweep efficiency. ...
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