Integrasi Kontrol Pada Water Coning Menggunakan Sinergi Komplesi Downhole Water Loop Dan Water Shut Off Dengan Stimulasi Polimer

Danang Novrio, Yovendra (2022) Integrasi Kontrol Pada Water Coning Menggunakan Sinergi Komplesi Downhole Water Loop Dan Water Shut Off Dengan Stimulasi Polimer. Other thesis, Universitas Islam Riau.

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Abstract

Over the past decade, oil prices have experienced instability which has led to a decline in exploration and exploitation activities due to low oil prices and high production costs. In Indonesia, this is exacerbated by the consumption of fossil fuels, which reaches 1,6 million barrels per day. In addition, the decline in oil production was also caused by a decrease in the number of lifting due to a decrease in reservoir performance from existing production fields due to water being produced during the exploitation process. The water produced during the exploitation process is one of the largest wastes in the industry, producing around 300 million barrels of water with an oil production of 80 million barrels meaning the company produces 3 or 4 barrels of water for every barrel of oil. One of the causes of excessive water production during the exploitation process is water coning. Reservoir with bottom water drive will make it easier for water coning to form. Due to the presence of water coning, the well will have a low critical production rate. Due to this phenomenon, it causes increased production costs, reduced production efficiency, accelerated corrosion of equipment, and finally stopped the production process. Therefore, this research was conducted to mitigate water coning by applying DWL combined with WSO with polymer stimulation. After the application of the combination method between DWL and WSO with polymer stimulation, it was found that this method can reduce water production caused by water coning by 62.72% and increase oil production by 4.57% better than the results obtained by conventional method. Based on the water and oil production gap, it is also known that the combination method shows better lifting than conventional methods or other methods, where the combination method only produces 1 barrel of water for every 1 barrel of oil which has a good impact on the water cut value, after 20 years of production. It is known that the water cut value is only 70%, so that it can increase the production life of the well before the well reaches the economic limit.

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