Bibliographic Citation
| Document | For copies of Journal Articles, please contact the Publisher or your local public or university library and refer to the information in the Resource Relation field. For copies of other documents, please see the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or Document Availability. |
|---|---|
| Title | Feasibility of using Wood's metal porosimetry techniques to measure the fracture-void geometry of cleats in coal. Topical report, September 1990-June 1991 |
| Creator/Author | Pyrak-Nolte, L.J. |
| Publication Date | 1991 Dec 01 |
| OSTI Identifier | OSTI ID: 5687164 |
| Report Number(s) | PB-92-137678/XAB |
| Other Number(s) | Other: CNN: GRI-5090-260-2003 |
| Resource Type | Technical Report |
| Resource Relation | Other Information: See also DE87006147. Sponsored by Gas Research Inst., Chicago, IL |
| Research Org | Purdue Univ., Lafayette, IN (United States). Dept. of Earth and Atmospheric Sciences |
| Subject | 01 COAL, LIGNITE, AND PEAT; COAL; POROSITY; COAL DEPOSITS; GEOLOGIC FRACTURES; POROSIMETERS; PERFORMANCE TESTING; ALLOYS; COMPUTERIZED TOMOGRAPHY; DRILL CORES; FLUID FLOW; FLUID INJECTION; GEOMETRY; LIQUID METALS; MICROSCOPY; PERMEABILITY; POROUS MATERIALS; SPATIAL DISTRIBUTION; VOID FRACTION; CARBONACEOUS MATERIALS; DIAGNOSTIC TECHNIQUES; DISTRIBUTION; ELEMENTS; ENERGY SOURCES; FLUIDS; FOSSIL FUELS; FUELS; GEOLOGIC DEPOSITS; GEOLOGIC STRUCTURES; LIQUIDS; MATERIALS; MATHEMATICS; MEASURING INSTRUMENTS; METALS; MINERAL RESOURCES; RESOURCES; TESTING; TOMOGRAPHY |
| Description/Abstract | Fractures and cleats in coal are the primary conduits along which fluids move through coalbed reservoirs. Fluid flow through a fracture is controlled by the geometry and the distribution of the void spaces. In the report, the feasibility of using a Wood's metal porosimetry technique to investigate the fracture void geometry of cleats in a whole coal drill core specimen is demonstrated. Wood's metal (a low melting point alloy) was injected into a coal specimen and allowed to solidify to form metal casts of the flow paths. The volume of voids forming the flow paths through the sample was determined gravinometrically. The casts were examined using computerized tomographic (CT) analysis and micrographs, showing the variable void geometry of cleats. The geometrical information on the cleat void geometry and the cleat network obtained from the Wood's metal porosimetry experiment include effective cleat porosity, cleat aperture, cleat density, and cleat spacing. Preliminary quantitative analysis was performed to characterize the spatial distribution of the flow paths in a cleat. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: Pages: (30 p) |
| Availability | NTIS |
| System Entry Date | 2008 Feb 07 |
Top | |
Last Updated: 11/19/2009