Retractable power turbine and method thereof
First Claim
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1. A downhole electrical generating apparatus comprising:
- a tubular having a wall forming a tubular space configured to receive fluid flow in a flow direction; and
,a retractable turbine having turbine blades rotatable around a rotation axis of the turbine, the turbine positionable in a first condition facing the flow with the rotation axis of the turbine substantially parallel to the flow direction and substantially parallel to a longitudinal axis of the tubular, the blades rotated by the flow when the turbine is in the first condition, and the blades positionable in a second condition substantially opening the tubular space.
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Abstract
A downhole electrical generating apparatus providing power to downhole electronics. The apparatus includes a tubular having a wall forming a tubular space which receives a flow in a flow direction. A retractable electrical generating apparatus positionable in a first condition facing the flow and in a second condition substantially opening the tubular space. Also included is a method of providing power to downhole electronics.
15 Citations
19 Claims
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1. A downhole electrical generating apparatus comprising:
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a tubular having a wall forming a tubular space configured to receive fluid flow in a flow direction; and
,a retractable turbine having turbine blades rotatable around a rotation axis of the turbine, the turbine positionable in a first condition facing the flow with the rotation axis of the turbine substantially parallel to the flow direction and substantially parallel to a longitudinal axis of the tubular, the blades rotated by the flow when the turbine is in the first condition, and the blades positionable in a second condition substantially opening the tubular space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of generating electricity in a downhole environment, the method comprising:
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providing a retractable turbine having turbine blades rotatable around a rotation axis of the turbine within a flow passageway for fluid flow through a tubular; positioning the retractable turbine substantially perpendicular to a flow direction of the fluid flow in a first condition, and positioning the rotation axis of the turbine substantially parallel to a longitudinal axis of the tubular and substantially parallel to the flow direction in the first condition; producing electricity using the retractable turbine in the first condition by rotating the blades with the fluid flow; and moving at least a portion of the retractable turbine to a position towards a wall of the tubular and providing a substantially clear borehole in a second condition. - View Dependent Claims (17, 18, 19)
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Specification