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Geothermal Reservoir Definition.

DE2005838144

Publication Date	2005
Personal Author	Horne, R. N.
Page Count	14
Abstract	The study of geothermal reservoir behavior is presently in a state of change brought about by the discovery that reservoir heterogeneity--fractures in particular--is responsible for large scale effects during production. On the other hand, some parts of a reservoir, or some portions of its behavior. may be unaffected by fractures and behave, instead, as if the reservoir were a homogeneous porous medium. Drilling has for many years been guided by geologists prospecting for fractures (which have been recognized as the source of production), but until recently reservoir engineers have not studied the behavior of fractured systems under production. In the last three years research efforts, funded by the Department of Energy and others, have made significant progress in the study of fractures. The investigations into simulation of fracture flow, tracer analysis of fractured systems, and well test analysis of double porosity reservoirs are all advancing. However, presently we are at something of a conceptual impasse in defining a reservoir as fractured or porous.
Keywords	Geothermal energy Reservoir engineering Geothermal wells Geothermal exploration Geologic fractures Drilling Porosity Fractured reservoirs Production Simulation Water
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Univ., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200603

Geothermal Reservoir Definition.

Geothermal Reservoir Definition.
DE2005838144

Publication Date	2005
Personal Author	Horne, R. N.
Page Count	14
Abstract	The study of geothermal reservoir behavior is presently in a state of change brought about by the discovery that reservoir heterogeneity--fractures in particular--is responsible for large scale effects during production. On the other hand, some parts of a reservoir, or some portions of its behavior. may be unaffected by fractures and behave, instead, as if the reservoir were a homogeneous porous medium. Drilling has for many years been guided by geologists prospecting for fractures (which have been recognized as the source of production), but until recently reservoir engineers have not studied the behavior of fractured systems under production. In the last three years research efforts, funded by the Department of Energy and others, have made significant progress in the study of fractures. The investigations into simulation of fracture flow, tracer analysis of fractured systems, and well test analysis of double porosity reservoirs are all advancing. However, presently we are at something of a conceptual impasse in defining a reservoir as fractured or porous.
Keywords	Geothermal energy Reservoir engineering Geothermal wells Geothermal exploration Geologic fractures Drilling Porosity Fractured reservoirs Production Simulation Water
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Univ., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200603