| DOI: | 10.2172/1177419
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| 报告题名: | Assessing Reservoir Depositional Environments to Develop and Quantify Improvements in CO<sub>2</sub> Storage Efficiency. A Reservoir Simulation Approach |
| 作者: | Okwen, Roland1; Frailey, Scott1; Leetaru, Hannes1; Moulton, Sandy2
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| 出版年: | 2014
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| 发表日期: | 2014-09-30
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| 总页数: | 346
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| 国家: | 美国
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| 语种: | 英语
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| 中文主题词: | 碳
; 碳酸酯
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| 主题词: | CARBON
; CARBONATE
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| 英文摘要: | The storage potential and fluid movement within formations are dependent on the unique hydraulic characteristics of their respective depositional environments. Storage efficiency (E) quantifies the potential for storage in a geologic depositional environment and is used to assess basinal or regional CO2 storage resources. Current estimates of storage resources are calculated using common E ranges by lithology and not by depositional environment. The objectives of this project are to quantify E ranges and identify E enhancement strategies for different depositional environments via reservoir simulation studies. The depositional environments considered include deltaic, shelf clastic, shelf carbonate, fluvial deltaic, strandplain, reef, fluvial and alluvial, and turbidite. Strategies considered for enhancing E include CO2 injection via vertical, horizontal, and deviated wells, selective completions, water production, and multi-well injection. Conceptual geologic and geocellular models of the depositional environments were developed based on data from Illinois Basin oil fields and gas storage sites. The geologic and geocellular models were generalized for use in other US sedimentary basins. An important aspect of this work is the development of conceptual geologic and geocellular models that reflect the uniqueness of each depositional environment. Different injection well completions methods were simulated to investigate methods of enhancing E in the presence of geologic heterogeneity specific to a depositional environment. Modeling scenarios included horizontal wells (length, orientation, and inclination), selective and dynamic completions, water production, and multiwell injection. A Geologic Storage Efficiency Calculator (GSECalc) was developed to calculate E from reservoir simulation output. Estimated E values were normalized to diminish their dependency on fluid relative permeability. Classifying depositional environments according to normalized baseline E ranges ranks fluvial deltaic and turbidite highest and shelf carbonate lowest. The estimated average normalized baseline E of turbidite, and shelf carbonate depositional environments are 42.5% and 13.1%, with corresponding standard deviations of 11.3%, and 3.10%, respectively. Simulations of different plume management techniques suggest that the horizontal well, multi-well injection with brine production from blanket vertical producers are the most efficient E enhancement strategies in seven of eight depositional environments; for the fluvial deltaic depositional environment, vertical well with blanket completions is the most efficient. This study estimates normalized baseline E ranges for eight depositional environments, which can be used to assess the CO2 storage resource of candidate formations. This study also improves the general understanding of depositional environmentâs influence on E. The lessons learned and results obtained from this study can be extrapolated to formations in other US basins with formations of similar depositional environments, which should be used to further refine regional and national storage resource estimates in future editions of the Carbon Utilization and Storage Atlas of the United States. Further study could consider the economic feasibility of the E enhancement strategies identified here. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1177419
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/41408
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1177419.pdf（52158KB） | 研究报告 | -- | 开放获取 | | View
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作者单位: | 1. University of Illinois, Champaign, IL (United States)
2. Illinois State Geologic
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| Recommended Citation: | |
Okwen, Roland,Frailey, Scott,Leetaru, Hannes,et al. Assessing Reservoir Depositional Environments to Develop and Quantify Improvements in CO<sub>2</sub> Storage Efficiency. A Reservoir Simulation Approach. 2014-01-01.
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