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A surface controlled electrically operated solenoid subsurface safety valve is positioned in a well tubing in a well and controlled by an electrical control line extending from the solenoid coil to the well surface. One or more measuring sensors are positioned in the well for measuring a physical pr

A surface controlled electrically operated solenoid subsurface safety valve is positioned in a well tubing in a well and controlled by an electrical control line extending from the solenoid coil to the well surface. One or more measuring sensors are positioned in the well for measuring a physical property of the well. The input of the sensor is connected to the control line for receiving electrical power and the output of the sensor is connected to the control power for supplying an output signal proportional to the measurement of the physical property. The output signal is distinguishable from the electrical supply current to the solenoid coil. A signal processor at the well surface receives the sensor output. Preferably the sensors are connected in parallel with at least a portion of the solenoid coil.

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The combination of a subsurface electrically operated solenoid safety valve and measuring sensor comprising, an electrical solenoid coil of a subsurface safety valve connected about a well tubing joint adapted to be connected in a well tubing in a well for opening and closing an electrically operate

The combination of a subsurface electrically operated solenoid safety valve and measuring sensor comprising, an electrical solenoid coil of a subsurface safety valve connected about a well tubing joint adapted to be connected in a well tubing in a well for opening and closing an electrically operated safety valve, said coil including an electrical supply connection adapted to be connected to an electrical control line extending to the well surface for supplying power to the solenoid coil from the well surface, a measuring sensor having an input and an output, said input connected to the electrical supply connection of the solenoid coil for receiving electrical power, said output connected to the electrical supply connection for supplying an output signal proportional to the measurement sensed by the sensor, said output signal being distinguishable from the electrical supply to the solenoid coil, and a signal processor adapted to be positioned at the well surface and connected to the electrical supply connection for receiving the sensor output.