Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Detecting water flow behind pipe in injection wells /
Author Thornhill, Jerry T. ; Benefield, B. G.
Other Authors
Author Title of a Work
Benefield, Bobby G.
CORP Author Environmental Research Inst., Ada, OK.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Publisher Robert S. Kerr Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1992
Report Number EPA/600/R-92/041
Stock Number PB92-239532
OCLC Number 46000379
Subjects Hydraulics.
Additional Subjects Injection wells ; Well logging ; Ground water ; Oxygen ; Pipe flow ; Measurement ; Test equipment ; Services
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EMBD MF PB92-293532 NRMRL/GWERD Library/Ada,OK 04/02/2004
NTIS  PB92-239532 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 91 pages : illustrations ; 28 cm
Regulations of the Environmental Protection Agency require that an injection well exhibit both internal and external mechanical integrity. The external mechanical integrity consideration is that there is no significant fluid movement into an underground source of drinking water through vertical channels adjacent to the injection well bore. The oxygen activation method for detecting flow behind pipe employs a measurement technique in which a stable isotope of oxygen is temporarily converted to an unstable nitrogen isotope. Unstable nitrogen-16 decays with a half-life of 7.13 seconds and acts as a radioactive tracer to enable measurement of flow of water-bearing fluid past a series of detectors. Thirteen tests have been conducted at the Mechanical Integrity Testing and Training Facility to determine the accuracy and reliability of the method.
"EPA/600/R-92/041." "Project officer: Jerry T. Thornhill." "February 1992." Includes bibliographical references (pages 17-18). Microfiche.