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Title: Shock attenuating apparatus and method

Abstract

This patent describes an apparatus for attenuating a shock in a tool string within a well, comprising a body in extensible under tension loading. It comprises means for connecting the body into the tool string; and undergoing plastic deformation in response to an explosive impact load for serially dissipating energy of a shock wave propagated in the body in response to the explosion impact load wherein the means for undergoing deformation and dissipating energy includes a wall of the body wherein a plurality of indentations are defined. This patent also describes a method of attenuating shock from an explosion in a well. It comprises lowering into the well an explosive connected to a shock attenuating member; detonating the explosive whereby an impact load with a shock wave is generated; and collapsing without severing the member in response to the impact load and dissipating energy of the shock wave from a plurality of surfaces of the member.

Inventors:
;
Publication Date:
OSTI Identifier:
7310513
Patent Number(s):
US 5117911; A
Application Number:
PPN: US 7-686220
Assignee:
Jet Research Center, Inc., Alvarado, TX (United States)
Resource Type:
Patent
Resource Relation:
Patent File Date: 16 Apr 1991
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 47 OTHER INSTRUMENTATION; OIL WELLS; EXPLOSIVE FRACTURING; SHOCK WAVES; ATTENUATION; EXPLOSIVES; WAVE PROPAGATION; WELL STIMULATION; FRACTURING; STIMULATION; WELLS; 020300* - Petroleum- Drilling & Production; 440400 - Well Logging Instrumentation

Citation Formats

Navarette, M, and Walker, J L. Shock attenuating apparatus and method. United States: N. p., 1992. Web.
Navarette, M, & Walker, J L. Shock attenuating apparatus and method. United States.
Navarette, M, and Walker, J L. Tue . "Shock attenuating apparatus and method". United States.
@article{osti_7310513,
title = {Shock attenuating apparatus and method},
author = {Navarette, M and Walker, J L},
abstractNote = {This patent describes an apparatus for attenuating a shock in a tool string within a well, comprising a body in extensible under tension loading. It comprises means for connecting the body into the tool string; and undergoing plastic deformation in response to an explosive impact load for serially dissipating energy of a shock wave propagated in the body in response to the explosion impact load wherein the means for undergoing deformation and dissipating energy includes a wall of the body wherein a plurality of indentations are defined. This patent also describes a method of attenuating shock from an explosion in a well. It comprises lowering into the well an explosive connected to a shock attenuating member; detonating the explosive whereby an impact load with a shock wave is generated; and collapsing without severing the member in response to the impact load and dissipating energy of the shock wave from a plurality of surfaces of the member.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {6}
}