Downhole power transmission system
AssigneePES, Inc.
InventorSteve Owens
Life of this patent
Estimating the term…
Abstract
A system for providing large quantities of power at a selected voltage to a downhole well tool. A conductor extends between a surface regulator and the well tool. The voltage is continuously measured downhole at the well tool, and a signal proportional to such downhole voltage is transmitted to the surface regulator. The power transmitted by the surface regulator to the conductor is increased or decreased depending on fluctuations in the tool requirements and the downhole voltage. The downhole voltage signal can be modulated through the conductor to the surface regulator or can be transmitted through another conductor.
Claims18
A system for transmitting electric power between a power source and a downhole tool, comprising:
- a regulator for engagement with the power source and for modifying the power transmitted through said regulator;
- a conductor for transmitting electric power from said regulator to the downhole tool;
- and
- a transmitter for detecting the downhole conductor voltage proximate to the downhole tool and for transmitting to said regulator a voltage signal representative of said downhole conductor voltage, wherein said regulator is responsive to said voltage signal for modifying the power transmitted from the power source into said conductor to maintain said downhole conductor voltage at a selected level.
A system for transmitting electric power between a power source and a downhole tool, comprising:
- a regulator for engagement with the power source and for modifying the power transmitted through said regulator;
- a conductor for transmitting electric power from said regulator to the downhole tool;
- and
- a transmitter for generating a frequency proportional to the downhole conductor voltage proximate to the downhole tool and for transmitting said frequency to said regulator, wherein said regulator is responsive to said frequency for modifying the power transmitted from the power source into said conductor to maintain said downhole conductor voltage at a selected level.
A method for transmitting electric power between a power source and a downhole tool, comprising the steps of:
- transmitting electric power from the power source through a regulator to a conductor engaged with the downhole tool;
- generating a voltage signal representing the downhole conductor voltage proximate to the downhole tool;
- transmitting the voltage signal to said regulator;
- and
- operating said regulator in response to said voltage signal to modify the electric power transmitted from the power source to said conductor to maintain said downhole conductor voltage at a selected level.
Dependencies are inferred from the claim text.