Enhanced oil recovery

doi:10.1016/b978-0-12-803734-8.00016-3

Cited by 6 publications

(1 citation statement)

References 163 publications

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“…Reservoir rocks have been the subject of extensive study by researchers who seek to enhance the extraction of oil from the interior of the rocks, as demonstrated by several reviews published in recent decades. − This is because sedimentary rocks contain a significant fraction of the global oil reserves in their tiny pores, but recovering this oil is not always effective. Most estimates indicate that only 30–40% of the oil is removed through conventional recovery processes, leaving 60–70% of the oil remaining in the reservoirs. ,− This low recovery efficiency is significantly affected by the rock wettability since water injection into the reservoir is an important step for oil removal. − On the other hand, wettability is affected by a layer of organic materials that physically or chemically adhere to the surface of rocks in the environments in which they are collected. , A well-known example is decreased oil recovery efficiency in carbonate reservoirs due to the high prevalence of fatty acids and kerogen (complex waxy mixture of hydrocarbons) on the rock surface…”

Section: Introductionmentioning

confidence: 99%

Directly Mapping the Spatial Distribution of Organic Compounds on Mineral Rock Surfaces by DESI and LAESI Mass Spectrometry Imaging

et al. 2022

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Here, we present a new application of desorption electrospray ionization (DESI) and laser ablation electrospray ionization (LAESI) mass spectrometry imaging to assess the spatial location of organic compounds, both polar and nonpolar, directly from rock surfaces. Three carbonaceous rocks collected from an aquatic environment and a berea sandstone subjected to a small-scale oil recovery experiment were analyzed by DESI and LAESI. No rock pretreatment was required before DESI and LAESI analyses. DESI detected and spatially mapped several fatty acids and a disaccharide on the surfaces of carbonaceous rocks, and various nitrogenated and oxygenated compounds on the surfaces of berea sandstone. In contrast, LAESI using a 3.4 μm infrared laser beam was able to detect and map hydrocarbons on the surfaces of all rock samples. Both techniques can be combined to analyze polar and nonpolar compounds. DESI can be used first to detect polar compounds, as it does not destroy the rock surface, and LAESI can then be used to analyze nonpolar analytes, as it destroys a layer of the sample surface. Both techniques have the potential to be used in several scientific areas involving rocks and minerals, such as in the analysis of industry-derived contaminants in aquatic sediments or in small-scale rock–fluid interaction experiments.

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Section: Introductionmentioning

confidence: 99%

Directly Mapping the Spatial Distribution of Organic Compounds on Mineral Rock Surfaces by DESI and LAESI Mass Spectrometry Imaging

et al. 2022

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Novel Surfactants for Enhanced Oil Recovery

Chowdhury

Srivastava

Medhi

et al. 2021

Petroleum Engineering

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Optimization of triple-alternating-gas (TAG) injection technique for enhanced oil recovery in tight oil reservoirs

Edouard

Dong

Okere

et al. 2021

J Petrol Explor Prod Technol

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After single-gas (SG) injection operations in tight oil reservoirs, a significant amount of oil is still unrecovered. To increase productivity, several sequencing gas injection techniques have been utilized. Given the scarcity of research on multiple-gas alternating injection schemes, this study propose an optimized triple-alternating-gas (TAG) injection for improved oil recovery. The performance of the TAG process was demonstrated through numerical simulations and comparative analysis. First, a reservoir compositional model is developed to establish the properties and composition of the tight oil reservoir; then, a suitable combination for the SG, double alternating gas (DAG), and TAG was selected via a comparative simulation process. Second, the TAG process was optimized and the best case parameters were derived. Finally, based on the oil recovery factors and sweep efficiencies, a comparative simulation for SG, DAG, and TAG was performed and the mechanisms explained. The following findings were made: (1) The DAG and TAG provided a higher recovery factor than the SG injection and based on recovery factor and economic advantages, CO2 + CH4 + H2S was the best choice for the TAG process. (2) The results of the sensitivity analysis showed that the critical optimization factors for a TAG injection scheme are the injection and the production pressures. (3) After optimization, the recovery factor and sweep efficiency of the TAG injection scheme were the best. This study promotes the understanding of multiple-gas injection enhanced oil recovery (EOR) and serves as a guide to field design of gas EOR techniques.

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Enhanced oil recovery

Cited by 6 publications

References 163 publications

Directly Mapping the Spatial Distribution of Organic Compounds on Mineral Rock Surfaces by DESI and LAESI Mass Spectrometry Imaging

Directly Mapping the Spatial Distribution of Organic Compounds on Mineral Rock Surfaces by DESI and LAESI Mass Spectrometry Imaging

Novel Surfactants for Enhanced Oil Recovery

Optimization of triple-alternating-gas (TAG) injection technique for enhanced oil recovery in tight oil reservoirs

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