Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/1076813 |
| 报告编号 | DE-FG02-97ER14785 |
| 来源ID | OSTI_ID: 1076813 |
| Self-Assembling Sup-porosity: The Effect On Fluid Flow And Seismic Wave Propagation | |
| Pyrak-Nolte, Laura J. [Purdue University] | |
| 英文摘要 | Fractures and joints in the field often contain debris within the void spaces. Debris originates from many different mechanisms: organic and/or inorganic chemical reactions/mineralization, sediment transport, formation of a fracture, mechanical weathering or combinations of these processes. In many cases, the presence of debris forms a sub-porosity within the fracture void space. This sub-porosity often is composed of material that differs from the fracture walls in mineralogy and morphology. The sub-porosity may partially fill voids that are on the order of hundreds of microns and thereby reduce the local porosity to lengths scales on the order of sub-microns to tens of microns. It is quite clear that a sub-porosity affects fracture porosity, permeability and storativity. What is not known is how the existence/formation of a sub-porosity affects seismic wave propagation and consequently our ability to probe changes in the subsurface caused by the formation or alteration of a sub-porosity. If seismic techniques are to be developed to monitor the injection and containment of phases in sequestration reservoirs or the propping of hydraulically induced fracture to enhance oil & gas production, it is important to understand how a sub-porosity within a fracture affects macroscopic seismic and hydraulic measurements. A sub-porosity will directly affect the interrelationship between the seismic and hydraulic properties of a fracture. This reports contains the results of the three main topics of research that were performed (1) to determine the effect of a sub-porosity composed of spherical grains on seismic wave propagation across fractures, (2) to determine the effect of biofilm growth in pores and between grains on seismic wave propagation in sediment, and (3) to determine the effect of the scale of observation (field-of-view) on monitoring alteration the pore space within a fracture caused by reactive flow. A brief summary of the results for each topic is contained in the report and the full details of the research and approach are contained in the publications found in the Attachment section of this report. A list of presentation and publications of all work associated with this grant is also provided. |
| 出版年 | 2013 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 58 GEOSCIENCES |
| URL | http://www.osti.gov/scitech/servlets/purl/1076813 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/270717 |
| 推荐引用方式 GB/T 7714 | Pyrak-Nolte, Laura J. [Purdue University]. Self-Assembling Sup-porosity: The Effect On Fluid Flow And Seismic Wave Propagation,2013. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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