Analisa Efek Adsorpsi Terhadap Alkaline Surfactant Polymer (asp) Flooding Dan Memonitor Pergerakan Ion Menggunakan Metode Streaming Potensial Di Batuan Karbonat Lapangan X

Hafeni, Vira Tri (2023) Analisa Efek Adsorpsi Terhadap Alkaline Surfactant Polymer (asp) Flooding Dan Memonitor Pergerakan Ion Menggunakan Metode Streaming Potensial Di Batuan Karbonat Lapangan X. Other thesis, Universitas Islam Riau.

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Abstract

Alkaline surfactant polymer (ASP) flooding is one of the EOR methods that can be used to increase well production. ASP injection has been shown in laboratory studies to be effective in reducing residual oil saturation and lowering the interfacial tension and mobility ratio between water and oil. However, alkali-surfactant-polymer injection often encounters problems such as adsorption effect which can affect the performance of alkali-surfactant-polymer injection. This investigation uses the CMG GEM 2020 simulator for modeling in carbonate reservoirs using alkaline Na2CO3, alkylbenzene surfactant (ABS) and polymer hydrolyzed polyacrylamide (HPAM). To monitor ions, the streaming potential method is used. The injection scheme for this method begins with waterflood injection from 2020 to 2024. Then injection of polymeric alkaline surfactants is carried out from 2025 to 2026. After that, another waterflood is carried out until 2030. The oil rate produced during waterflood in two wells, namely DK-608 and prod, is 1502.73 bbl/day and 1304.74 bbl/day. At the time of ASP injection, the oil rate in the DK-608 well and prod was 2801.253418 bbl/day and 2800.394043 bbl/day. The flow direction of the fluid injected into the model flows from the bottom layer, where Na+ ions and SO42-- ions flow from the injection wells at the bottom layer to the production wells. Where the movement of Na+ ions increased in ASP injection and decreased in 2027, but not significant because Na+ reacted with Ao- (acid oil) ions and formed an emulsion. Meanwhile, SO42-- ions increased during ASP injection but decreased after ASP injection, this is likely due to adsorption on the rock. The higher the concentration of alkali and surfactants used, the lower the adsorption value. In addition, the type of alkali used also affects the adsorption value.

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