Title: Casings for use in a system for fracturing rock within a bore

Abstract

In disclosed explosive units for use in a wellbore, the casing can include a tubular outer body comprising grooves, pockets, or other variances in thickness that create stress concentrations that promote shear and tensile fragmentation instead of ductile expansion of the casing, which can negatively impact permeability of a wellbore. In other embodiments, the casing can comprise non-ductile and/or reactive material which responds to explosive or high temperature loading by brittle failure, disintegration, melting, burning, and/or chemically reacting with the energetic materials and/or the borehole environment. Such embodiments can enhance the permeability of the wellbore after detonation.

Inventors:

Mace, Jonathan Lee; Bronisz, Lawrence E.; Steedman, David W.; Bradley, Christopher Robert

Issue Date:

2019-04-02

Research Org.:

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1568149

Patent Number(s):

10246982

Application Number:

14/905,361

Assignee:

Triad National Security, LLC (Los Alamos, NM)

Patent Classifications (CPCs):

F - MECHANICAL ENGINEERING F42 - AMMUNITION F42D - BLASTING

E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING

Show more

F - MECHANICAL ENGINEERING F42 - AMMUNITION F42D - BLASTING

F42D3/00 - Particular applications of blasting techniques {

E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING

E21B43/263 - using explosives {

F - MECHANICAL ENGINEERING F42 - AMMUNITION F42B - EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION

F42B3/02 - adapted to be united into assemblies

F - MECHANICAL ENGINEERING F42 - AMMUNITION F42D - BLASTING

F42D1/22 - Methods for holding or positioning for blasting cartridges or tamping cartridges

Show less

DOE Contract Number:  

AC52-06NA25396

Resource Type:

Patent

Resource Relation:

Patent File Date: 07/15/2014

Country of Publication:

United States

Language:

English

Subject:

58 GEOSCIENCES; 03 NATURAL GAS; 04 OIL SHALES AND TAR SANDS; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE