Nasution, Andiansyah Madani (2023) Investigasi Sifat Ion Na+ & Nh4+ Pada Hybrid-alkali Asp Flooding Menggunakan Simulator Cmg Gem 2020. Other thesis, Universitas Islam Riau.

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Abstract

The hybrid-alkali reduces surfactant adsorption in the formation, reduces logistic costs, and improves oil recovery. The type of hybrid-alkali in this research is Sodium Carbonate (Na2CO3) and Ammonium Hydroxide (NH4OH), which are easy to obtain and more economical than other alkalis. This research uses the CMG GEM 2020 simulator. Modeling in carbonate rocks is carried out in heterogeneous reservoirs with permeability distribution that has a value from 100 mD to 300 mD. The model has a grid size of 5 x 1 x 10, with a total pore volume of 1.203 x 107 ft3. The reservoir is located at a depth from 1900 ft to 2060 ft. The fluid injection components are alkaline Na2CO3 with a Molecular Weight (MW) of 105.98 g/mol and density of 2.54 gr/cm3, while alkaline NH4OH has an MW of 17.03 g/mol and density of 0.68 gr/cm3. Heavy Alkylbenzene Sulfonate (HABS) surfactant has MW of 543 gr/mol and a density of 3.79 gr/cm3, for the Hydrolyzed Polyacrylamide (HPAM) polymer, which is MW 9000 gr/mol and density of 1,302 gr/cm3. The Multi-Ion Exchange (MIE) uses the CMG GEM 2020 simulator in this research to simulate the model. The duration of the data used for ASP hybrid-alkaline injection modeling is two years. This research applies investigations on hybrid-alkali to determine the movement of ions that bind crude oil. Based on the qualitative analysis, the fluid can fill the entire grid to flow from the injection well to the production well by optimizing the injection pressure. It proves the graph of the movement of Na+ and NH4+, which increase after the injection of the hybrid-alkali. In contrast to the SO42- ion, which undergoes adsorption so that it decreases during the injection process.

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