The Key Parameter Effect Analysis Of Polymer Flooding On Oil Recovery Using Reservoir Simulation

Abstract

As time goes by, there will be decreasing of production rates of a field along with decreasing pressure. This led to the necessity for further efforts to increase oil production. Therefore, pressure support is required to improve the recovery factor. Supportable pressure that can be used can be either water flooding and polymer flooding. This study aims to compare recovery factor to scenarios carried out, such as polymer flooding with different concentrations modeled in the same reservoir model to see the most favorable scenario. The method used in this research is reservoir simulation method with Computer Modeling Group (CMG) STARS simulator. The study was carried out by observing at the pressure, injection rate, and polymer concentration on increasing field recovery factor. This study used cartesian grid with the assumption of homogeneous reservoir, there are no faults or other geological condition in the reservoir, and driving mechanism is only solution gas drive. This reservoir, oil type is light oil with API gravity 40.3˚API and layer of conglomerate rock. The simulation result performed with various scenarios provides a good result. Where the conditions case base case field recovery factor of 6.7%, and after water flooding produced 25.5% of oil, whereas with tertiary recovery method is polymer flooding was carried out with four concentrations of 640 ppm, 1,500 ppm, 3,000 ppm, and 4,000 ppm obtained optimum values at 4,000 ppm polymer concentration with recovery factor 28.9%, SOR reduction final value 0,5255, polymer adsorption of 818,700 ppm, reservoir final pressure 1,707 psi, and an increase in water viscosity to 0.94 cP.

Ecofriendly Natural Surfactants in the Oil and Gas Industry: A Comprehensive Review

“…The selection of a chemical EOR method depends on factors like reservoir characteristics, chemical cost and availability, and the method’s environmental impact. Every chemical has a specific function in the EOR process; polymers, for instance, are utilized to boost the viscosity of injected water and enhance sweep efficiency, , while surfactants are employed to decrease the IFT between oil and water and alter rock wettability. − Surfactant flooding plays various roles within the enhanced oil recovery (EOR) procedures. Its key role involves diminishing the interfacial tension between water and oil, which in turn amplifies the movement and displacement of oil from the reservoir rock.…”

Pembuatan Gum Xanthan dengan Proses Fermentasi dari Hidrolisat Selulosa Eceng Gondok dan Penerapannya dalam Enhanced Oil Recovery

“…Injeksi polimer bertujuan untuk menurunkan tegangan permukaan di antara fasa minyak dan fasa air. Keuntungan dari injeksi polimer yaitu meningkatkan area dan displacement sweep efficiency, tidak beracun dan tidak korosif, serta bisa diaplikasikan pada reservoir yang besar [7].…”

Sensitivity Analysis Comparisson of Synthetic Polymer and Biopolymer using Reservoir Simulation

“…STARS is the only simulator that accounts for the complex phenomena required to accurately model processes such as Alkaline-Surfactant-Polymer (ASP) fl ooding, low salinity water injection, and foam fl ooding. The approachment used has been applied by many previous studies, such as; Temizel, et al, 2016 andErfando, et al, 2019. Sensitivity study on this research focuses on the eff ectivity of polymer injection on polymer adsorption. Reservoir grid used is multilevel homogeneous reservoir 15x15x4 assuming single production well and one injection well.…”

“…Table 1 Reservoir fl uid characteristic (Pertamina 2016;Erfando, et al, 2019) Table 2 Reservoir rock characteristic (Pertamina 2016;Erfando, et al, 2019) Table 3 Polymer properties (Temizel, et al, 2016) Table 4 Polymer fl ooding injection parameter concentration of polymer adsorbed on the rock and the concentration of polymer in the surrounding water phase (Hidayat & ALMolhem, 2019).…”

“…Typically, these two parameters are directly proportional to each other. Low-concentration polymer injections will lead to a low increase in value when compared to higher concentration injections (Erfando, et al, 2019).…”