Analytic crack solutions for tilt fields around hydraulic fractures Metadata

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Title

  • Main Title Analytic crack solutions for tilt fields around hydraulic fractures

Creator

  • Author: Warpinski, N.R.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: US Department of Energy (United States)

Publisher

  • Name: Sandia National Laboratories
    Place of Publication: Albuquerque, New Mexico
    Additional Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA

Date

  • Creation: 2000-01-05

Language

  • English

Description

  • Content Description: The recent development of downhole tiltmeter arrays for monitoring hydraulic fractures has provided new information on fracture growth and geometry. These downhole arrays offer the significant advantages of being close to the fracture (large signal) and being unaffected by the free surface. As with surface tiltmeter data, analysis of these measurements requires the inversion of a crack or dislocation model. To supplement the dislocation models of Davis [1983], Okada [1992] and others, this work has extended several elastic crack solutions to provide tilt calculations. The solutions include constant-pressure 2D, penny-shaped, and 3D-elliptic cracks and a 2D-variable-pressure crack. Equations are developed for an arbitrary inclined fracture in an infinite elastic space. Effects of fracture height, fracture length, fracture dip, fracture azimuth, fracture width and monitoring distance on the tilt distribution are given, as well as comparisons with the dislocation model. The results show that the tilt measurements are very sensitive to the fracture dimensions, but also that it is difficult to separate the competing effects of the various parameters.
  • Physical Description: Medium: P; Size: 55 pages

Subject

  • Keyword: Data Analysis
  • Keyword: Crack Propagation
  • STI Subject Categories: 02 Petroleum
  • Keyword: Monitoring
  • Keyword: Calculation Methods
  • Keyword: Hydraulic Fractures
  • Keyword: Mathematical Models
  • STI Subject Categories: 58 Geosciences
  • Keyword: Well Stimulation
  • Keyword: Well Logging Equipment
  • Keyword: Hydraulic Fracturing

Source

  • Other Information: PBD: 5 Jan 2000

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: SAND2000-0045J
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 750187
  • Archival Resource Key: ark:/67531/metadc705786

Note

  • Display Note: OSTI as DE00750187
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