Hydraulic-fracture propagation in layered rock: experimental studies of fracture containment

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Fracture geometry is an important concern in the design of a massive hydraulic fracture treatment for improved natural gas recovery from tight gas sands. Possible prediction of vertical fracture growth and containment in layered rock requires an improved understanding of the parameters which may control fracture growth across layer interfaces. We have conducted laboratory hydraulic fracture experiments and elastic finite element studies which show that at least two distinct geologic conditions may inhibit or contain the vertical growth of hydraulic fractures in layered rock; (1) a weak interfacial shear strength of the layers and (2) a compressional increase in the … continued below

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18 pages

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Teufel, L. W. & Clark, J. A. January 1, 1981.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 89 times. More information about this article can be viewed below.

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Fracture geometry is an important concern in the design of a massive hydraulic fracture treatment for improved natural gas recovery from tight gas sands. Possible prediction of vertical fracture growth and containment in layered rock requires an improved understanding of the parameters which may control fracture growth across layer interfaces. We have conducted laboratory hydraulic fracture experiments and elastic finite element studies which show that at least two distinct geologic conditions may inhibit or contain the vertical growth of hydraulic fractures in layered rock; (1) a weak interfacial shear strength of the layers and (2) a compressional increase in the minimum horizontal stress in the bounding layer. The second condition is more important and more likely to occur at depth. Variations in the horizontal stress can result from differences in elastic properties of individual layers in a layered rock sequence. A compressional increase in the minimum horizontal stress can occur in going from high shear modulus into low shear modulus layers.

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18 pages

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NTIS, PC A02/MF A01.

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  • Joint SPE/DOE symposium, Denver, CO, USA, 27 May 1981

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  • Report No.: SAND-80-2219C
  • Report No.: CONF-810518-7
  • Grant Number: AC04-76DP00789
  • Office of Scientific & Technical Information Report Number: 6567524
  • Archival Resource Key: ark:/67531/metadc1184461

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1981

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  • July 3, 2018, 8:14 a.m.

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Teufel, L. W. & Clark, J. A. Hydraulic-fracture propagation in layered rock: experimental studies of fracture containment, article, January 1, 1981; Albuquerque, New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1184461/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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