Inflatable devices for suspending explosives in boreholes

Details Inflatable devices for suspending explosives in boreholes Inflatable devices for suspending explosives in boreholes

1990-01-24

1991-03-19

Britts, Ramon S.

Wells

Packers or plugs

Expanded by confined fluid from central chamber, pump or...

166386, 102333, E21B 33127

Patent

active

050002619

ABSTRACT:
Inflatable devices configured for supporting explosives particularly in vertical boreholes of widely varying diameter. The inflatable devices of the invention can be used in the pre-splitting and blast removal of earth formations by suspending explosives in both pre-splitting and production boreholes. Plugging of such boreholes is accomplished through the use of the present inflatable devices which are formed of flexible polymeric material and which stretch to seal boreholes and to exert forces against borehole walls sufficient to support heavy columns of explosives and/or stemming at desirable borehole locations. The present inflatable devices are restrained into a pre-splitting configuration and inflated to a configuration capable of supporting explosives and/or stemming within a borehole.

REFERENCES:
patent: 3130787 (1964-04-01), Mason
patent: 3276481 (1966-10-01), McNulty
patent: 3357193 (1967-12-01), Fitzgibbon, Jr.
patent: 3493045 (1970-02-01), Bassini
patent: 3806025 (1974-04-01), Marshall
patent: 3995694 (1976-12-01), Freiburger
patent: 4660644 (1987-04-01), Egnor

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