Improving MMP by Co-Injection of Miscible CO2 With Abu Dhabi Crude Oil

Javid, Khalid; Khalifeh, Hadil Abu; Belhaj, Hadi; Haroun, Mohammed

doi:10.1115/omae2013-10258

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They believe that ethane can also reduce MMP. For instance, Javid et al 88 predicted the MMP of the CO 2 -crude oil system after injecting nitrogen, methane, and ethane into two crude oil samples from the Abu Dhabi carbonate reservoir using the component simulation method. They found that ethane was more effective in reducing MMP, and the MMP of the first crude oil sample decreased by 100 psi/10 mol % after injecting ethane.…”

Section: Mmp Reducing Techniquesmentioning

confidence: 99%

Comprehensive Review of the Determination and Reduction of the Minimum Miscibility Pressure during CO₂ Flooding

Song,

Meng,

Zhang

et al. 2024

ACS Omega

View full text Add to dashboard Cite

With the increasing oil demand, more attention has been paid to enhancing oil recovery in old oil fields. CO 2 flooding is popular due to its high oil displacement efficiency and ability to reduce greenhouse gas emissions. Laboratory experiments and on-site application cases have shown that the minimum miscibility pressure has a greater impact on CO 2 flooding than other factors. If the reservoir pressure is below the minimum miscible pressure, then there is CO 2 immiscible flooding. Both theoretical analysis and experimental results show that the recovery rate of CO 2 miscible flooding is 2−5 times higher than that of immiscible flooding. If the reservoir pressure is increased by water flooding before CO 2 injection, it is easily limited by the physical property parameters. Therefore, accurately determining and effectively reducing the minimum mixing pressure has become the focus of research. Currently, there are two types of methods for determining the minimum miscible pressure: experimental and theoretical methods. The experimental method is generally considered more accurate, including the slim tube test, rising bubble apparatus, and vanishing interfacial tension, etc. However, it is worth noting that the minimum miscibility pressure is dynamically changing, and there will be high economic costs if measured repeatedly through experimental methods during reservoir development. Therefore, it is recognized that the minimum mixing pressure can be determined at any time using theoretical calculation of initial data, which will reduce economic and time costs to a high degree. In this paper, the theoretical calculation method is divided into empirical correlation, state equation, and artificial intelligence algorithm. The techniques for reducing the minimum miscibility pressure can be classified into two categories: miscible solvents and surfactant methods. The miscible solvent method can be further divided into monocomponent and polycomponent methods. This paper compares the advantages and disadvantages of the existing techniques for measuring and reducing MMP and selects the best method.

show abstract

Section: Mmp Reducing Techniquesmentioning

confidence: 99%

Comprehensive Review of the Determination and Reduction of the Minimum Miscibility Pressure during CO₂ Flooding

Song,

Meng,

Zhang

et al. 2024

ACS Omega

View full text Add to dashboard Cite

show abstract

Miscibility Study of Flue Gases for a Coupled CCS-EOR Project

Gonzalez-Perez

Barrado

Pardo

et al. 2022

SPE EuropEC - Europe Energy Conference Featured at the 83rd EAGE Annual Conference &Amp; Exhibition

View full text Add to dashboard Cite

Miscible hydrocarbon (HC) rich gas injection is a common EOR technique included in the development plan of many Abu Dhabi oil fields. This technology, that provides a very high oil recovery, requires the supply of a gas that is very valuable for other uses or its commercialization. Utilization and storage of flue gases rich in CO2 and N2 can play a key role in lowering the overall reservoir emissions by coupling carbon capture and storage (CCS) with EOR techniques. Thus, the substitution of hydrocarbon gas by these gases is of great environmental and industrial interest. Nevertheless, the change of the injection gas is not straightforward and requires a previous study to ensure the gas miscibility. The aim of this piece of research is to estimate the minimum miscibility pressure (MMP) of the studied gas, in order to clarify if miscibility conditions are achieved at reservoir pressure. Thus, a comprehensive study was performed applying three different approaches to predict/estimate the MMP: Empirical correlations from the literature based on experimental results. Experimental measurements with Slim Tube tests. Computer modeling based on equations of state for phase-behavior calculations. Miscibility of CO2 and N2 was successfully investigated through the three approaches. In the case of CO2, miscibility at reservoir pressure was totally ensured at 120°C since MMP was estimated to be the bubble pressure of the studied oil, more than 100 bar below reservoir pressure. Otherwise, the conclusion of the nitrogen miscibility studies is that N2 gas flooding is not a feasible EOR technique since MMP is far above reservoir pressure. Before completely discarding the use of nitrogen, miscibility of mixtures of HC rich gas and N2 was first studied by PVT simulations. Thermodynamic modelling was compared against experimental Slim Tube tests evaluating HC+N2 mixtures. Laboratory work led to conclude that mixtures with 42% of N2 could be injected at miscible conditions and revealed that simulations overestimate the minimum miscibility pressure of the studied gas mixtures. Finally, miscibility of CO2 and N2 mixtures with typical compositions of flue gases from post-combustion processes were studied using the thermodynamic model retuned with previous experimental measurements. This work presents a thorough study of minimum miscibility pressure of CO2 and N2 in oil from Abu Dhabi, which is the first step of any EOR project coupled with CCS. The developed methodology covered the three different approaches and the results provide a broad comparison amongst correlated, measured and simulated MMP.

show abstract

Improving MMP by Co-Injection of Miscible CO2 With Abu Dhabi Crude Oil

Cited by 2 publications

References 0 publications

Comprehensive Review of the Determination and Reduction of the Minimum Miscibility Pressure during CO₂ Flooding

Comprehensive Review of the Determination and Reduction of the Minimum Miscibility Pressure during CO₂ Flooding

Miscibility Study of Flue Gases for a Coupled CCS-EOR Project

Contact Info

Product

Resources

About

Improving MMP by Co-Injection of Miscible CO2 With Abu Dhabi Crude Oil

Cited by 2 publications

References 0 publications

Comprehensive Review of the Determination and Reduction of the Minimum Miscibility Pressure during CO2 Flooding

Comprehensive Review of the Determination and Reduction of the Minimum Miscibility Pressure during CO2 Flooding

Miscibility Study of Flue Gases for a Coupled CCS-EOR Project

Contact Info

Product

Resources

About

Comprehensive Review of the Determination and Reduction of the Minimum Miscibility Pressure during CO₂ Flooding

Comprehensive Review of the Determination and Reduction of the Minimum Miscibility Pressure during CO₂ Flooding