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Perforating devices for use in wells

United States Patent

February 26, 2002
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
The perforating device for use in completing a well includes a case, an explosive charge contained in the case, and a generally bowl-shaped liner. The liner is positioned adjacent the explosive charge and has non-uniforrn thickness along its length. The liner further includes a protruding portion near its tip. In another configuration, the liner includes a hole near its tip to expose a portion of the explosive charge.
Jacoby; Jerome J. (Grass Valley, CA), Brooks; James E. (Manvel, TX), Aseltine; Clifford L. (late of Houston, TX)
Schlumberger Technology Corp. (Sugar Land, TX), Regents of Univ. of California (Oakland, CA)
09/ 394,792
September 13, 1999
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the U.S. Department of Energy and the University of California, for the operation of Los Alamos National Laboratory, and pursuant to CRADA No. LA93C10074, "Advanced Down-Hole Perforating Technologies," between Schlumberger Perforating and Testing Center and Los Alamos National Laboratory.