EOR Technologies and Applications Towards 70% Recovery Factor Aspiration in Giant Carbonate Middle East Reservoirs

Al-Keebali, Aaesha; Yaslam, Maged Mabrook; Amro, Ahmed Bin; Masalmaeh, Shehadeh

doi:10.2118/196693-ms

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…Our model incorporates the composition and salinity of the injected fluid on the process efficiency by considering the viscosity and density of the injected fluid as a function of ionic concentrations. This can be more crucial in high salinity reservoirs such as the Middle East fields with in-situ brine salinities higher than 200 000 ppm (Al-Keebali et al, 2019;Al-Murayri et al, 2019;Jouenne, 2020;Kornilov et al, 2019;Masalmeh et al, 2019). The single-phase geochemical model in a one dimensional configuration is coded in MATLAB.…”

Section: Introductionmentioning

confidence: 99%

Geochemical modelling of acid injection in high salinity sandstones at reservoir conditions

Tohidi

Sadeghnejad

2021

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Waterflooding is widely implemented to enhance oil recovery. The displacement efficiency of this method depends on multiple factors, including makeup water properties, native oil, and formation rock. The incompatibility of the injected fluid with the pore fluid can result in a chemical non-equilibrium state within porous media that may result in different chemical reactions that depend on the type and number of the existing components within the system. The present research aims to develop a mathematical model capable of handling multiple geochemical reactions to predict pH and ions concentration during an acid injection while considering alterations of rock and fluid properties. The dependency of fluid properties (viscosity and density) is considered based on the system ionic concentration, which can be more crucial in high saline media. The validity of the developed model was evaluated using the experimental literature data. The results reveal that in addition to the effect of injected fluid pH, the process efficiency can be influenced by the composition of the injected fluid. In other words, fluid properties dependency on salinity and the injected fluid composition is significant during geochemical simulations. Comparing homogenous and heterogenous mineral distribution shows an insignificant sensitivity to the amount heterogeneity while the total mineral contents remain constant in both cases.

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Section: Introductionmentioning

confidence: 99%

Geochemical modelling of acid injection in high salinity sandstones at reservoir conditions

Tohidi

Sadeghnejad

2021

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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From Vision to Reality: Development and Deployment of Continuous Low-Rate CO2 Injection System for Extended Pilot Well

Kurniadi,

Aliss,

Al Baik

et al. 2024

Adipec

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The paper aims to present a novel development of modular low-rate CO2 injection equipment tailored for use in extended CO2 pilot operations. The objectives include demonstrating the equipment's efficacy in de-risking sustainable long-term field development plans via execution of extended injection pilots for Enhanced Oil Recovery (EOR) or storage purposes. The scope encompasses technical specifications and a case study illustrating the first field deployment of the technology, diving into the planning, engineering, implementation, and performance evaluation. Our approach to developing the continuous low-rate CO2 injection equipment involved a multi-faceted process integrating innovative design, rigorous testing, and iterative refinement. Initially, a portfolio gap analysis was conducted to identify key process requirements that were currently not accommodated for including low flow rates, controlled temperature output and maintenance of the injected CO2 in the super dense phase. Multidisciplinary engineering principles were applied to design a modular surface equipment spread, capable of 24 hour low-rate CO2 injection for extended periods. Furthermore, a flow assurance transient phase simulator was utilized to verify the equipment's process design to ensure safety and flexibility. The results of the development and first deployment underscore the successful performance of the newly developed CO2 injection equipment, affirming its robustness and reliability. Over a continuous five-month period, the equipment demonstrated consistent and controlled CO2 injection, functioning semi-autonomously with minimal intervention in a remote desert environment. This prolonged injection facilitated a comprehensive examination of CO2 impact on a microporous, oil-bearing formation. Understanding efficiency of the overall system was also crucial, especially in relation to transportation, transferring, cool-down, priming, and pressure management. The implementation of the heater design and P&ID control system provided valuable data on the heating requirements necessary to raise cold CO2 to the designed temperature, thereby preventing thermal cracking of reservoir and cap rock. By providing continuous CO2 injection, the equipment aided in understanding the feasibility of implementing permanent surface infrastructure, such as CO2 pipelines and pumping technologies, crucial for the sustainable development objectives. Overall, the study's findings emphasize the pivotal role of the modular injection equipment in de-risking Carbon Capture, Utilization and Storage (CCUS) ventures and advancing knowledge in CO2 utilization for enhanced oil recovery and storage applications. This paper offers novel insights by showcasing the successful deployment of newly developed continuous low-rate CO2 injection equipment in remote field settings. It provides valuable real-world data on equipment performance, reliability, and its ability to de-risk long-term field development plans for practitioners. Such practical information is essential for engineers involved in CCUS initiatives, aiding in informed decision-making and optimizing the implementation of sustainable CO2 utilization technologies.

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EOR Technologies and Applications Towards 70% Recovery Factor Aspiration in Giant Carbonate Middle East Reservoirs

Cited by 2 publications

References 8 publications

Geochemical modelling of acid injection in high salinity sandstones at reservoir conditions

Geochemical modelling of acid injection in high salinity sandstones at reservoir conditions

From Vision to Reality: Development and Deployment of Continuous Low-Rate CO2 Injection System for Extended Pilot Well

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