Fareed Anaiz Gul, Khoja Asif Hussain, De Felice Fabio, Petrillo Antonella, Sultan Muhammad Arsalan, Jalalzai Zafar Khan, Daood Syed Sheraz
Department of Engineering, University of Naples "Parthenope", Isola C4, Centro Direzionale Napoli, Napoli, NA, 80143, Italy; U.S-Pakistan Center for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan.
U.S-Pakistan Center for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan.
Sci Total Environ. 2023 Dec 20;905:167124. doi: 10.1016/j.scitotenv.2023.167124. Epub 2023 Sep 16.
Due to concerns over rising emissions of carbon dioxide (CO) from fossil fuel utilization, there has been a strong emphasis on the development of a safe, economical, practical method of carbon capture utilization and storage (CCUS). One way to reduce these CO emissions is underground geological sequestration in depleted oil fields or exhausted reservoirs. CO injection into oil reservoirs is an established technology, these reservoirs not only offer the potential for high storage of CO but this process could also target a large amount of oil and gas recovery through a technique called enhanced oil recovery (EOR). The main objective of this research was to evaluate the storage potential of CO in the depleted oil field while also investigating the effect of CO injection on reservoir pressure maintenance, and additional oil and gas recovery, in the same field. This paper presented the model of CO flooding based on the CO displacement mechanism with different scenarios of natural depletion, CO injection, and water injection simulated by the ECLIPSE 300 reservoir simulator, and the results of different scenarios were compared. Results of this study showed the site selected for CO injection has the potential to store more than 9 billion cubic feet (BCF) of CO in each case and witnessed improved gas recovery, while also having a major effect on reservoir pressure maintenance where pressure increased from 2120 psi to 6584 psi. The finding of this work ought to help in preparing for future improvement in underground geological sequestration of CO in depleted fields with the same field specifications.
由于对化石燃料利用过程中二氧化碳（CO）排放量不断上升的担忧，人们一直大力强调开发一种安全、经济、实用的碳捕获利用与封存（CCUS）方法。减少这些CO排放的一种方法是在枯竭的油田或废弃的储层中进行地下地质封存。向油藏注入CO是一项成熟的技术，这些储层不仅具有高CO存储潜力，而且该过程还可以通过一种称为强化采油（EOR）的技术实现大量油气回收。本研究的主要目的是评估枯竭油田中CO的存储潜力，同时研究CO注入对同一油田储层压力维持以及额外油气回收的影响。本文介绍了基于CO驱替机理的CO驱替模型，利用ECLIPSE 300油藏模拟器模拟了自然衰竭、CO注入和注水等不同场景，并对不同场景的结果进行了比较。本研究结果表明，所选的CO注入场地在每种情况下都有潜力存储超过90亿立方英尺（BCF）的CO，气体回收率提高，同时对储层压力维持有重大影响，压力从2120磅力/平方英寸增加到6584磅力/平方英寸。这项工作的发现应该有助于为具有相同油田规格的枯竭油田中CO的地下地质封存的未来改进做好准备。
