Downhole Mud Powered Battery
AssigneeSchlumberger Technology Corporation
InventorVladimir Shitikov
Life of this patent
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Abstract
Methods, systems, and devices for powering downhole tools with an electrochemical device are provided. A downhole power system includes an electrochemical device having an anode and a cathode. The power system includes a downhole tool electrically communicating with the electrochemical device to provide electrical power to the downhole tool. The electrochemical device is activated when immersed in a downhole fluid and inactive when not immersed in the downhole fluid, the downhole fluid functioning as an electrolyte.
Claims20
A downhole power system, comprising:
- an electrochemical device having an anode and a cathode;
- and
- a downhole tool electrically communicating with the electrochemical device to provide electrical power to the downhole tool, wherein the electrochemical device is activated when immersed in a downhole fluid and inactive when not immersed in the downhole fluid, the downhole fluid functioning as an electrolyte.
A downhole battery, comprising:
- a magnesium or zinc based anode;
- a cathode;
- and
- a separator comprising a high temperature resistant material, the separator physically and electrically isolating the anode and cathode;
- wherein the battery is inactive when not immersed in a downhole fluid and activated when immersed in the downhole fluid, the downhole fluid functioning as an electrolyte.
A method of forming a high temperature downhole fluid activated battery, comprising:
- forming a cathode assembly, comprising:
- annealing a salt comprising silver chloride (AgCl) to create a high temperature ingot of silver chloride;
- forming non-conductive plates of AgCl from the ingot;
- coating the plates with silver (Ag);
- bonding the plates to a silver plated copper grid sheet;
- and
- rolling the sheet into a spiral or scroll shape;
- coupling the cathode assembly to a high temperature resistant separator;
- coupling the separator and cathode assembly to an anode having a tube shape;
- and
- electrically bonding an anode conductor to the anode tube and a cathode conductor to the cathode assembly.
Dependencies are inferred from the claim text.