# A New CO\({}_{2}\)-EOR Methods Screening Model Based on Interdependency Parameters
## 1 Introduction  
One of the enhanced oil recovery (EOR) methods is carbon dioxide injection, which directly utilizes CO\({}_{2}\) from unwanted industrial operations because of its harmful impact on climate change. Currently, this method has attracted the attention of petroleum industries because it provides dual benefits. Firstly, it prevents the release of excess CO\({}_{2}\) in the atmosphere by re-injecting it into reservoirs. Secondly, it increases the oil recovery to meet energy needs [1]. Correspondingly, CO\({}_{2}\)-EOR has been considered as one of the primary EOR methods in the US [2]. The CO\({}_{2}\)-EOR projects in the US have increased in the last than 20 years, despite oil prices fluctuation. Therefore, they have good prospects for continuous implementation [3]. In the oil recovery process, CO\({}_{2}\) is injected into the reservoir, and it creates an interaction with the rock and the oil. This interaction alters the oil and rock properties with its mechanism including oil swelling, reduction in oil viscosity and CO\({}_{2}\)-oil interfacial tension, extraction of light/intermediate oil components, and wettability changes [4]. Thehigh solubility of CO\({}_{2}\) in the oil causes swelling and consequently reduces the oil viscosity and density [5]. Oil swelling is the main recovery mechanism for miscible and immiscible CO\({}_{2}\)-EOR [6]. Miscible CO\({}_{2}\)-EOR results in a greater ability to produce incremental oil from the reservoir than immiscible CO\({}_{2}\)-EOR. However, the miscible CO\({}_{2}\) can only be achieved at higher reservoir pressure than minimum miscible pressure (MMP) [7]. The value of MMP depends on many factors such as pressure, reservoir temperature, and oil and gas-injected compositions [8]. A CO\({}_{2}\)-EOR project consists of stages, starting with the screening phase, laboratory analysis, simulation, pilot test, and finally, full-scale field injection [9]. Screening is the first stage in identifying the suitability of the reservoir for CO\({}_{2}\)-EOR. The successful implementation of the project is highly dependent on the screening process and its results, making the stage is very crucial. Previous studies have widely introduced the CO\({}_{2}\)-EOR screening process as part of the EOR screening. Existing screening criteria for miscible and immiscible CO\({}_{2}\)-EOR are given in Tables 1 and 2, respectively. For instance, [PERSON] et al. [10] popularized the famous EOR screening by summarizing its criteria in the form of simple descriptive statistics using minimum, maximum, and mean values. Their data was collected from 1974 to 1996. The essential aspects of screening parameters depend on reservoir rock and fluid properties: gravity, oil saturation, viscosity, formation type, net thickness, average permeability, depth, and temperature. Later, [PERSON] and [PERSON] [11] updated this screening guideline with data collected from successful EOR projects carried out from 1998 to 2010. They also added porosity as a screening parameter. [PERSON] et al. [5] improved their findings and completed a screening guideline for miscible CO\({}_{2}\) injection by including parameters with a significant effect, namely MMP and net thickness. The projects carried out from 2010 onwards are provided as the database for this screening.