Qualitative endoscopic observation of hydraulic fractures to investigate the effect of fluid viscosity

Seong Jun Ha, Tae Sup Yun, Kwang Yeom Kim

Research output: Contribution to journalConference article

Abstract

The control of induced fracture network generated by hydraulic fracturing treatment plays an important role in predicting the productivity of hydrocarbon resources. In particular, both nature of pressurized injection fluid and in-situ stress condition significantly affect the formation of fracture network. The previous studies have mostly reported qualitative tendency of fracturing mechanism and its manifestation that are partially understood by numerical and experimental results. To better understand the effect of fluid viscosity, a series of experimental tests are systematically performed with cylindrical specimen under axisymmetric condition. The artificially made specimens with cement paste and mortar ensure the homogeneity and isotropy for experimental consistency. Water and oil are served as fracturing fluids at constant pumping rate. The monitoring of stress evolution with increasing pressurization and high-resolution optical endoscopy imaging together allow assessing the morphological characteristics of generated fracture.

Original languageEnglish
Pages (from-to)641-646
Number of pages6
JournalGeotechnical Special Publication
Issue numberGSP 277
DOIs
Publication statusPublished - 2017 Jan 1
EventGeotechnical Frontiers 2017 - Orlando, United States
Duration: 2017 Mar 122017 Mar 15

Fingerprint

fracture network
viscosity
Hydraulics
Viscosity
hydrocarbon resource
fluid injection
isotropy
Fluids
fluid
mortar
in situ stress
homogeneity
Fracturing fluids
pumping
cement
Hydraulic fracturing
Endoscopy
Pressurization
Mortar
productivity

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Cite this

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abstract = "The control of induced fracture network generated by hydraulic fracturing treatment plays an important role in predicting the productivity of hydrocarbon resources. In particular, both nature of pressurized injection fluid and in-situ stress condition significantly affect the formation of fracture network. The previous studies have mostly reported qualitative tendency of fracturing mechanism and its manifestation that are partially understood by numerical and experimental results. To better understand the effect of fluid viscosity, a series of experimental tests are systematically performed with cylindrical specimen under axisymmetric condition. The artificially made specimens with cement paste and mortar ensure the homogeneity and isotropy for experimental consistency. Water and oil are served as fracturing fluids at constant pumping rate. The monitoring of stress evolution with increasing pressurization and high-resolution optical endoscopy imaging together allow assessing the morphological characteristics of generated fracture.",
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Qualitative endoscopic observation of hydraulic fractures to investigate the effect of fluid viscosity. / Ha, Seong Jun; Yun, Tae Sup; Kim, Kwang Yeom.

In: Geotechnical Special Publication, No. GSP 277, 01.01.2017, p. 641-646.

Research output: Contribution to journalConference article

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