Replacing annual shut-in well tests by analysis of regular injection data: Field-case feasibility study Metadata

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Title

  • Main Title Replacing annual shut-in well tests by analysis of regular injection data: Field-case feasibility study

Creator

  • Author: Silin, Dmitry
    Creator Type: Personal
  • Author: Tsang, Chin-Fu
    Creator Type: Personal
  • Author: Gerrish, Harlan
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Office of Science.
    Contributor Type: Organization
  • Sponsor: Environmental Protection Agency (United States)
    Contributor Type: Organization

Publisher

  • Name: Lawrence Berkeley National Laboratory
    Place of Publication: Berkeley, California
    Additional Info: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (United States)

Date

  • Creation: 2003-05-21

Language

  • English

Description

  • Content Description: Regulations governing deep injection of industrial wastes for disposal require regular tests for monitoring the formation hydraulic properties changes in the vicinity of the wellbore. Such a monitoring is performed through transient pressure well testing, a procedure that is routinely used in the environmental and oil industries. In such tests, the pumping pressures and rates are recorded and analyzed to estimate the transmissivity and storativity of the rock in the vicinity of the wellbore. Numerous methods for analyzing such data have been developed since the pioneering paper by Theis (1935). The well test analysis methods are summarized in several monographs, see, e.g., Earlougher (1977) and Matthews (1967). Traditional well test analysis methods are often based on estimating the slope of the pressure fall-off curve in a special time scale, e.g., using the Horner plot method (Horner, 1951). Such an approach is justified by asymptotic analysis of the pressure change relative to a uniform initial pressure distribution. However, in reality, such an initial condition may not hold true because the operations preceding the test make the pressure distribution not uniform. It has been demonstrated in Silin and Tsang (2002, 2003) that in the Horner plot method, this circumstance partially explains the deviation of the data points from the theoretically predicted straight line. A new method has been proposed to analyze well test data accounting for the pre-test operations. This method has been validated using synthetic and field well test data. In this paper, we demonstrate how the method can be applied to analyze regular pumping data from an injection field to estimate the formation's hydraulic properties without interrupting the operations. In this estimation, we use the code ODA developed at Berkeley Lab. This code implements the methods and algorithms developed by Silin and Tsang (2002, 2003).
  • Physical Description: 11 pages

Subject

  • Keyword: Industrial Wastes
  • Keyword: Pumping
  • Keyword: Testing
  • Keyword: Monitoring
  • Keyword: Transients
  • Keyword: Hydraulics
  • STI Subject Categories: 32 Energy Conservation, Consumption, And Utilization
  • Keyword: Algorithms
  • STI Subject Categories: 54 Environmental Sciences
  • Keyword: Regulations
  • Keyword: Distribution

Source

  • Conference: Second International Symposium on Underground Injection Science and Technology, Berkeley, CA (US), 10/22/2003--10/25/2003

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.: LBNL--52941
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 816545
  • Archival Resource Key: ark:/67531/metadc739823

Note

  • Display Note: OSTI as DE00816545