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Relationships of earth fracture systems to productivity of a gas storage reservoir.
Overbey-WK Jr.; Sawyer-WK; Henniger-BR
NTIS: PB 237 894 1974 Oct; :1-133
The Bureau of Mines conducted surface joint and stress measurements, airborne remote sensing imagery studies, compass-oriented borehole televiewer surveys, numerical simulation of fractured wells, and well productivity studies in a four-quadrangle study area of Ohio, to determine the effects of earth fracture systems on the deliverability of gas storage fields. The results of these studies indicate that much useful information about a gas storage reservoir can be obtained and put to practical use by studying (1) oriented cores for fractures and directional permeability, (2) orientation of induced hydraulic fractures for alinement of well patterns, and (3) aerial photos and multispectral scanner imagery for general surface geology comparison and to determine if some development patterns can be generated by such results. The absence of known tectonic elements associated with flat-lying sediments, such as faults or fracture zones that can be seen on the surface, indicates that the use of remote sensors such as radar or aerial photography is not likely to be useful in picking well locations for drilling. Studies similar to those discussed here should be conducted in gently folded and strongly folded sedimentary formation areas to determine if the increased knowledge of earth fracture systems under these conditions might be beneficial in gasfield and gas storage reservoir development. Work done in cooperation with the American Gas Association.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 237 894
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