Dynamic monitoring of fracture extension in unconsolidated sand specimen by GPR

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationProceedings of the 13th Internarional Conference on Ground Penetrating Radar, GPR 2010
DOIs
Publication statusPublished - 2010 Sep 17
Event13th Internarional Conference on Ground Penetrating Radar, GPR 2010 - Lecce, Italy
Duration: 2010 Jun 212010 Jun 25

Publication series

NameProceedings of the 13th Internarional Conference on Ground Penetrating Radar, GPR 2010

Other

Other13th Internarional Conference on Ground Penetrating Radar, GPR 2010
Country/TerritoryItaly
CityLecce
Period10/6/2110/6/25

Keywords

  • Component
  • GPR
  • Hydraulic fracturing
  • Subsurface fracture
  • Vivaldi array antenna

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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