Pressure enhanced penetration with shaped charge perforators
Abstract
A downhole tool, adapted to retain a shaped charge surrounded by a superatmospherically pressurized light gas, is employed in a method for perforating a casing and penetrating reservoir rock around a wellbore. Penetration of a shaped charge jet can be enhanced by at least 40% by imploding a liner in the high pressure, light gas atmosphere. The gas pressure helps confine the jet on the axis of penetration in the latter stages of formation. The light gas, such as helium or hydrogen, is employed to keep the gas density low enough so as not to inhibit liner collapse.
- Inventors:
-
- Danville, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 873694
- Patent Number(s):
- 6223656
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F42 - AMMUNITION F42B - EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- pressure; enhanced; penetration; shaped; charge; perforators; downhole; tool; adapted; retain; surrounded; superatmospherically; pressurized; light; gas; employed; method; perforating; casing; penetrating; reservoir; rock; wellbore; jet; 40; imploding; liner; atmosphere; helps; confine; axis; latter; stages; formation; helium; hydrogen; density; inhibit; collapse; gas density; gas pressure; gas atmosphere; shaped charge; reservoir rock; light gas; downhole tool; /102/
Citation Formats
Glenn, Lewis A. Pressure enhanced penetration with shaped charge perforators. United States: N. p., 2001.
Web.
Glenn, Lewis A. Pressure enhanced penetration with shaped charge perforators. United States.
Glenn, Lewis A. Mon .
"Pressure enhanced penetration with shaped charge perforators". United States. https://www.osti.gov/servlets/purl/873694.
@article{osti_873694,
title = {Pressure enhanced penetration with shaped charge perforators},
author = {Glenn, Lewis A},
abstractNote = {A downhole tool, adapted to retain a shaped charge surrounded by a superatmospherically pressurized light gas, is employed in a method for perforating a casing and penetrating reservoir rock around a wellbore. Penetration of a shaped charge jet can be enhanced by at least 40% by imploding a liner in the high pressure, light gas atmosphere. The gas pressure helps confine the jet on the axis of penetration in the latter stages of formation. The light gas, such as helium or hydrogen, is employed to keep the gas density low enough so as not to inhibit liner collapse.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2001},
month = {Mon Jan 01 00:00:00 EST 2001}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.