Apparatus and method for generating power downhole and using same for performing a downhole operation

1. A wellbore system, comprising:

a housing that is secured within a casing in the wellbore via at least one slip;

an inductive coil in the housing;

a magnetic element conveyed from a surface location to a location of the inductive coil by a conveying member and is selectively movable in the inductive coil by a motion provided by the conveying member to generate electrical energy; and

a device in the housing that utilizes the generated electrical energy.

2. The wellbore system of claim 1 , wherein the inductive coil is attached on an inside of the housing and further includes a passage therethrough.

3. The wellbore system of claim 1 , wherein the device includes a sensor that provides signals corresponding to a downhole parameter.

4. The wellbore system of claim 3 further comprising a controller that determines the downhole parameter from the sensor signals and controls a wellbore operation.

5. The apparatus of claim 4 , wherein the operation is selected from a group consisting of: (i) fracturing; (ii) opening of a valve; and (iii) closing of a valve.

6. The wellbore system of claim 1 further comprising:

a data acquisition device carried by the conveying member; and

a data transmission device in the wellbore configured to transmit data from the device to the data acquisition device.

7. The wellbore system of claim 1 , wherein the magnetic element is movable in the inductive coil by one selected from the group consisting of: (i) motion of the conveying member; (ii) an oscillating device coupled to the magnetic element; and (iii) a rotating device coupled to the magnetic element.

8. The wellbore system of claim 1 , wherein the device is a sensor that provides signals relating to a parameter of interest; and wherein the wellbore system further includes:

a data transmission device in the housing configured to transmit data relating to the parameter of interest; and

a data receiver in the wellbore that receives the data transmitted by the data transmission device.

9. The wellbore system of claim 8 further comprising a controller that receives the data from the data receiver and controls a wellbore operation in response thereto.

10. A method of performing an operation in a wellbore, comprising:

placing a housing within a casing in the wellbore, the housing including an inductive coil having an opening;

securing the housing to the casing using at least one slip;

conveying a magnetic element by a conveying member from a surface location into the opening of the inductive coil; and

using a motion provided by the conveying member to move the magnetic element in the opening of the inductive coil to generate electrical energy in the inductive coil.

11. The method of claim 10 further comprising:

providing a sensor in the housing; and

providing the generated electrical energy to the sensor to generate signals relating to a parameter of interest.

12. The method of claim 11 further comprising:

determining from the sensor signals a value of the parameter of interest; and

performing a wellbore operation at least in part based on the value of the parameter of interest.

13. The method of claim 12 , wherein the wellbore operation is selected from a group consisting of: (i) fracturing; (ii) opening of a valve; and (iii) closing of a valve.

14. The method of claim 12 , further comprising performing the wellbore operation at least in part based on the value of the parameter of interest at least in part by using a controller at a surface location.

15. The method of claim 11 , wherein moving the magnetic element comprises one selected from the group consisting of: (i) rotating the magnetic element by rotating the conveying member; (ii) oscillating the magnetic element by oscillating the conveying member; (iii) oscillating the magnetic element using an oscillating device coupled to the magnetic element and to the conveying member.

16. The method of claim 11 further comprising:

providing a transmitter in the housing that transmits data relating to the measurements made by the sensor;

conveying a receiver in the wellbore on the conveying member, wherein the receiver receives the data from the transmitter; and

processing the data received by the receiver to determine a value of a parameter of interest.

17. The method of claim 16 further comprising performing an operation based at least in part on the determined value of the parameter of interest.

18. The method of claim 17 , wherein the operation is selected from a group consisting of: (i) fracturing; (ii) opening of a valve; and (iii) closing of a valve.