Sensitivity Analysis Comparisson of Synthetic Polymer and Biopolymer using Reservoir Simulation

Abstract

With a simultaneous increasing demand for oil and large decreases worldwide in newly discovered oil reserves in the past few decades, much attention has been paid to more effi cient production approaches such as enhanced-oil-recovery (EOR) methods for developing oil and gas from existing reservoirs (Li et al., 2014). Basically, there are two types of polymers; biopolymers and synthetic polymers (Cenk et al., 2017). Method used for this study is reservoir simulation by Computer Modeling Group (CMG) STARS simulator. The study concerns to investigate and analyze the polymer sensitivity on two diff erent types of polymer: synthetic polymer and biopolymer. The simulation is done on 15x15x4 grid for 3653 days (10 years). The simulation indicates that the biopolymer injection shows more stable result in compare to synthetic polymer. The biopolymer’s adsorption occurs on smaller area and takes longer time. Conversely, the adsorption of synthetic polymer goes on bigger area of the reservoir and transpire on shorter time. Considering these facts, the use of biopolymers is more eff ective in order to increase the sweep effi ciency by reducing viscous fi ngering of chemical injection in reservoir.

Heterogeneity Effect on Polymer Injection: a Study of Sumatra Light Oil

“…Polymer flooding is one of the most widely utilized Enhanced Oil Recovery (EOR) processes in the oil industry (Erfando et al, 2019). Polymer flooding is the process of introducing polymer solutions into oil reservoirs to enhance oil displacement and sweep efficiency, hence increasing oil recovery (Ramadhan et al, 2021). Additionally, to seal off areas with high permeability and thief zones (Dano et al, 2019).…”

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.…”

“…Any introduction of surfactants should not negatively impact the interaction between reservoir rock surfaces and native formation water. A lack of compatibility could lead to formation damage or even the precipitation of minerals, adversely affecting reservoir permeability and the overall reservoir . Ensuring that surfactants coexist favorably with the existing formation water chemistry requires a deep understanding of the interplay between these components.…”

“…A lack of compatibility could lead to formation damage or even the precipitation of minerals, adversely affecting reservoir permeability and the overall reservoir. 56 Ensuring that surfactants coexist favorably with the existing formation water chemistry requires a deep understanding of the interplay between these components. Achieving this balance is integral to maximizing the benefits of surfactant based EOR strategies while minimizing potential drawbacks.…”