期刊
GEOTHERMICS
卷 39, 期 1, 页码 70-77出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.geothermics.2009.12.003
关键词
Geothermal; EGS; Gel-proppant stimulation; Fracture performance; Fracture face skin; Gross Schonebeck; Germany
资金
- German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety
The geothermal research well GtGrSk4/05 at Gross Schonebeck, Germany, was hydraulically stimulated to develop an Enhanced Geothermal System in the Upper Rotliegend sandstones. Gel-proppant stimulation was selected to enhance reservoir productivity and to maintain it over the long term. Before the field tests, laboratory experiments were carried out to study embedding effects and long-term hydraulic conductivity changes in intermediate- and high-strength proppant types. Based on the laboratory results it was decided to place in the stimulated fractures large concentrations of a high-strength proppant. The success of the stimulation of GtGrSk4/05 was confirmed by production test and flowmeter log data. (c) 2010 Elsevier Ltd. All rights reserved.
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