Analysis of Hydraulic Fracturing and Reservoir Performance in Enhanced Geothermal Systems

被引：27
|
作者：
Li, Mengying [1 ]
Lior, Noam [1 ]
机构：
[1] Univ Penn, Dept Mech Engn & Appl Mech, Philadelphia, PA 19104 USA
来源：
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME | 2015年 / 137卷 / 04期
关键词：
geothermal energy; engineered geothermal systems (EGS); energy use for hydraulic fracturing; flow and heat transfer in EGS reservoir; number and radius of fractures for thermal drawdown; NUMERICAL-SIMULATION; GENERATION;
D O I：
10.1115/1.4030111
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Analyses of fracturing and thermal performance of fractured reservoirs in engineered geothermal system (EGS) are extended from a depth of 5 km to 10 km, and models for flow and heat transfer in EGS are improved. Effects of the geofluid flow direction choice, distance between fractures, fracture width, permeability, radius, and number of fractures, on reservoir heat drawdown time are computed. The number of fractures and fracture radius for desired reservoir thermal drawdown rates are recommended. A simplified model for reservoir hydraulic fracturing energy consumption is developed, indicating it to be 51.8-99.6 MJ per m(3) fracture for depths of 5-10 km.
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页数：14
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