Hydraulic fracturing tests in anhydrite interbeds in the WIPP, Marker Beds 139 and 140

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Hydraulic fracturing tests were integrated with hydrologic tests to estimate the conditions under which gas pressure in the disposal rooms in the Waste Isolation Pilot Plant, Carlsbad, NM (WIPP) will initiate and advance fracturing in nearby anhydrite interbeds. The measurements were made in two marker beds in the Salado formation, MB139 and MB140, to explore the consequences of existing excavations for the extrapolation of results to undisturbed ground. The interpretation of these measurements is based on the pressure-time records in two injection boreholes and several nearby hydrologic observation holes. Data interpretations were aided by post-test borehole video surveys of fracture ... continued below

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76 p.

Creation Information

Wawersik, W. R.; Carlson, L. W.; Henfling, J. A.; Borns, D. J.; Howard, C. L. & Roberts, R. M. May 1, 1997.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 39 times , with 17 in the last month . More information about this report can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Hydraulic fracturing tests were integrated with hydrologic tests to estimate the conditions under which gas pressure in the disposal rooms in the Waste Isolation Pilot Plant, Carlsbad, NM (WIPP) will initiate and advance fracturing in nearby anhydrite interbeds. The measurements were made in two marker beds in the Salado formation, MB139 and MB140, to explore the consequences of existing excavations for the extrapolation of results to undisturbed ground. The interpretation of these measurements is based on the pressure-time records in two injection boreholes and several nearby hydrologic observation holes. Data interpretations were aided by post-test borehole video surveys of fracture traces that were made visible by ultraviolet illumination of fluorescent dye in the hydraulic fracturing fluid. The conclusions of this report relate to the upper- and lower-bound gas pressures in the WIPP, the paths of hydraulically and gas-driven fractures in MB139 and MB140, the stress states in MB139 and MB140, and the probable in situ stress states in these interbeds in undisturbed ground far away from the WIPP.

Physical Description

76 p.

Notes

INIS; OSTI as DE97006287

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  • Other Information: PBD: May 1997

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  • Other: DE97006287
  • Report No.: SAND--95-0596
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 477708
  • Archival Resource Key: ark:/67531/metadc675211

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  • May 1, 1997

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  • July 25, 2015, 2:21 a.m.

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  • June 14, 2016, 6:57 p.m.

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Wawersik, W. R.; Carlson, L. W.; Henfling, J. A.; Borns, D. J.; Howard, C. L. & Roberts, R. M. Hydraulic fracturing tests in anhydrite interbeds in the WIPP, Marker Beds 139 and 140, report, May 1, 1997; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc675211/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.