TY - GEN
T1 - Dynamic monitoring of fracture extension in unconsolidated sand specimen by GPR
AU - Kim, Dong Hun
AU - Sato, Motoyuki
AU - Ito, Takatoshi
PY - 2010/9/17
Y1 - 2010/9/17
N2 - We conducted a GPR monitoring to observe the extension of fractures created by hydraulic fracturing. To achieve this monitoring, a measurement system with higher time accuracy and faster data acquisition rate are needed. We designed a VNA (Vector Network Analyzer) measurement system using a Vivaldi array antenna. The VNA measurement system has the time resolution of 1 ps/sample and the data acquisition rate of 0.78 sec/acquisition, where the system dynamic range is about 100 dB. The Vivaldi array antenna has a wide frequency bandwidth of 0.3 MHz∼6 GHz. Comparing the actual formation of the fracture and the infiltrated region with the measurement result, we can verify the extension of the fracture indirectly. Also it may be possible to understand the relation between the pressure of the fracturing fluid and the formation of the fracture in real time.
AB - We conducted a GPR monitoring to observe the extension of fractures created by hydraulic fracturing. To achieve this monitoring, a measurement system with higher time accuracy and faster data acquisition rate are needed. We designed a VNA (Vector Network Analyzer) measurement system using a Vivaldi array antenna. The VNA measurement system has the time resolution of 1 ps/sample and the data acquisition rate of 0.78 sec/acquisition, where the system dynamic range is about 100 dB. The Vivaldi array antenna has a wide frequency bandwidth of 0.3 MHz∼6 GHz. Comparing the actual formation of the fracture and the infiltrated region with the measurement result, we can verify the extension of the fracture indirectly. Also it may be possible to understand the relation between the pressure of the fracturing fluid and the formation of the fracture in real time.
KW - Component
KW - GPR
KW - Hydraulic fracturing
KW - Subsurface fracture
KW - Vivaldi array antenna
UR - http://www.scopus.com/inward/record.url?scp=77956531722&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77956531722&partnerID=8YFLogxK
U2 - 10.1109/ICGPR.2010.5550158
DO - 10.1109/ICGPR.2010.5550158
M3 - Conference contribution
AN - SCOPUS:77956531722
SN - 9781424446049
T3 - Proceedings of the 13th Internarional Conference on Ground Penetrating Radar, GPR 2010
BT - Proceedings of the 13th Internarional Conference on Ground Penetrating Radar, GPR 2010
T2 - 13th Internarional Conference on Ground Penetrating Radar, GPR 2010
Y2 - 21 June 2010 through 25 June 2010
ER -