IDENTIFYING FRACTURES AND FLUID TYPES USING FLUID INCLUSION STRATIGRAPHY

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Conference Proceedings: IDENTIFYING FRACTURES AND FLUID TYPES USING FLUID INCLUSION STRATIGRAPHY

Abstract
Fluid Inclusion Stratigraphy (FIS) is a method currently being developed for use in geothermal systems to identify fractures and fluid types. This paper is the third in a series of papers on the development of FIS. Fluid inclusion gas chemistry is analyzed and plotted on well log diagrams. The working hypothesis is that select gaseous species and species ratios indicate areas of groundwater and reservoir fluid flow and reservoir seals. Previously we showed that FIS analyses identify fluid types and fractures (Dilley et al, 2004). Here we look at the sampling interval and additional confirmation that FIS analyses identify fractures. Sampling intervals of 20 ft and 10 ft. are evaluated to determine the optimal sampling interval and FIS are compared to fracture logs. Additionally, FIS samples were obtained from a core to evaluate the core interval is affected by a fracture fluid. The results show that generally a 20 ft sampling interval is sufficient, and that a vein affects the wall rock at distances of 5 to 10 feet beyond the fracture.

Authors 
Dilley, L.M.; Newman, D.L. ; McCulloch and J.;








Published 
PROCEEDINGS, Thirtieth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 31-February 2, 2005, 1/1/2005





DOI 
Not Provided
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Citation

Dilley, L.M.; Newman, D.L. ; McCulloch, J.;. 1/1/2005. IDENTIFYING FRACTURES AND FLUID TYPES USING FLUID INCLUSION STRATIGRAPHY. Proceedings of (!) ; (!) : PROCEEDINGS, Thirtieth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 31-February 2, 2005.


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