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Thermal-chemical Alteration of Sandstone to Increase Permeability.

Authors
Heath-LJ; Jones-RA
Source
NTIS: PB 205 644 :22 pages
Link
NIOSHTIC No.
10008826
Abstract
Liquid incendiaries were burned within the interstices of several different types of sandstone cores to determine the technical feasibility of increasing sandstone permeability by this method. Fuel-oxidant mixtures were tested in 186 cores; six cores exploded when ignited. In virtually all instances, the explosion completely pulverized the sandstone cores. In addition to those cores damaged by explosions, 24 cores were fractured so severely that permeability tests were impossible. Although combustion generally increased the permeability, specific mixtures at given pressures were inconsistent in their ignition and burning behavior. Tests indicated that the heat of burning incendiaries significantly increased sandstone permeability. The improved permeability ratios were usually less than 2, but one was 10.3. Permeability alteration by other in situ methods was not as effective as that by flame propagation.
Publication Date
19710101
Document Type
IH; Report of Investigation;
Fiscal Year
1971
NTIS Accession No.
PB-205644
NTIS Price
A03
Identifying No.
RI 7586
NIOSH Division
BERC;
Source Name
NTIS: PB 205 644
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