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A solenoid operated valve system for petroleum production wells including a solenoid operated valve securable in a well bore connected in electrically insulated relation with the lower end of a tubing string extending to the surface and a tubing string below the valve to a well packer and an electri

A solenoid operated valve system for petroleum production wells including a solenoid operated valve securable in a well bore connected in electrically insulated relation with the lower end of a tubing string extending to the surface and a tubing string below the valve to a well packer and an electric circuit from a control system at the surface through the tubing string to the valve and back to the surface in the casing the tubing and casing serving as the electrical conductors for opening the valve and monitoring the valve position. The solenoid operated valve has an operator tube formed of tubular sections of different magnetic characteristics so that the valve is opened against a biasing spring by a high current flow and held open by a current flow of a lower value. The valve solenoid is operable by either AC or DC current.

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An electrically operated solenoid actuated valve system for use in a borehole, comprising: a well casing formed of electrically conductive material extending down the walls of the borehole; a production tubing extending co-axially down the casing for the flow of borehole fluids from within the well

An electrically operated solenoid actuated valve system for use in a borehole, comprising: a well casing formed of electrically conductive material extending down the walls of the borehole; a production tubing extending co-axially down the casing for the flow of borehole fluids from within the well to the wellhead, said tubing being formed of electrically conductive material and mechanically supported at the wellhead but being electrically insulated from the casing; a tubular safety valve housing assembly attached to the tubing by means of a mounting assembly mechanically connected to the lower end of the tubing but being electrically insulated therefrom, said housing having means for mounting therein a solenoid coil and an armature moveable therein being affixed to actuate a safety valve in response to the flow of current through the solenoid coil, said safety valve being closed by a spring bias in response to deenergization of said coil, the body of said housing being electrically connected to the casing of said well bore to complete an electrical circuit therewith; means for applying an electric current potential between the casing and tubing at the well head to cause current flow through the coil of said solenoid within said housing and produce movement of the armature of said solenoid to effect opening of said safety valve in response thereto.