What does a tensiometer measure in fractured rock?

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Tensiometers are routinely used in both the laboratory and the field for measuring the capillary pressure in unsaturated porous media. The authors conducted a laboratory experiment on a fractured basalt core. They also examined the performance of a tensiometer in fractured porous media by means of numerical simulation, in which the tensiometer itself and its interaction with the formation were explicitly modeled. They conclude that the gauge pressure is primarily affected by the fracture rock component fracture or matrix that conducts water into or out of the ceramic cup of the tensiometer. Fracture flow is accurately monitored during imbibition events, ... continued below

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14 p.

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Finsterle, S. & Faybishenko, B. February 1, 1998.

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Description

Tensiometers are routinely used in both the laboratory and the field for measuring the capillary pressure in unsaturated porous media. The authors conducted a laboratory experiment on a fractured basalt core. They also examined the performance of a tensiometer in fractured porous media by means of numerical simulation, in which the tensiometer itself and its interaction with the formation were explicitly modeled. They conclude that the gauge pressure is primarily affected by the fracture rock component fracture or matrix that conducts water into or out of the ceramic cup of the tensiometer. Fracture flow is accurately monitored during imbibition events, whereas during drainage, the matrix capillary pressure is registered, leading to a strong hysteretic behavior in the pressure measurements.

Physical Description

14 p.

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OSTI as DE98052894

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  • Characterization and measurement of the hydraulic properties of unsaturated porous media, Riverside, CA (United States), 22-24 Oct 1997

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  • Other: DE98052894
  • Report No.: LBNL--41454
  • Report No.: CONF-9710205--
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 645589
  • Archival Resource Key: ark:/67531/metadc696726

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  • February 1, 1998

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • June 14, 2016, 7:15 p.m.

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Finsterle, S. & Faybishenko, B. What does a tensiometer measure in fractured rock?, article, February 1, 1998; California. (digital.library.unt.edu/ark:/67531/metadc696726/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.