| 摘要 |
A low-cost, easily operable oil well packer is disclosed comprising two, spaced, circular restrainers attached to a producing casing section and connected by a hollow, flexible, cylindrical member surrounding the production casing section. The restraining members are provided with removable valve openings which are normally sealed and adjacent thereto and spaced between the threaded ends of the production casing section and the restraining members are additional valve openings which are also normally closed so that the well packer may be actuated by means of fluid pressure introduced by means of a connection from the interior of the production casing section or by means of an exterior hose.
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