Pneumatic packer

Details Pneumatic packer Pneumatic packer

1983-04-15

1984-11-27

Novosad, Stephen J.

Wells

Packers or plugs

Spaced sealing portions

73155, 277 2, 277 34, 166187, E21B 33124

Patent

active

044846266

ABSTRACT:
A pneumatically inflated packer assembly includes spaced upper and lower inflatable sleeves which expand radially to anchor the assembly at a desired depth within a well screen. A porous, elastic bag exteriorly covers these sleeves so that the expanded sleeves stretch and tension the bag such that its intermediate portion between the sleeves tends to expand into cylindrical form so that it lies closely adjacent or against the interior surface of the well screen. In this way, a supply of porous material such as sand housed in an open space above the lower sleeve and below the upper sleeve is free to flow or migrate radially outwardly to substantially completely fill the cross section of the well screen. Groundwater flow into the well is now constrained to flow horizontally through the sand so that its direction and flow rate may be measured by a probe penetrating into the sand. The sand may be housed in an elastic, porous bag and a diaphragm may be employed to displace sand upwardly into the open space incidental to sleeve inflation.

REFERENCES:
patent: 2633200 (1953-03-01), Humason
patent: 3592056 (1971-07-01), Bernaix

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