Measurements of properties and transmission of measurements in subterranean wells
AssigneeHalliburton Energy Services, Inc.
InventorsFredrick D. Curtis, Paul Spriggs, Vimal V. Shah
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Abstract
A system of measuring properties, such as pressure, and transmitting measurements in a subterranean well. In a described example, a valve system includes a valve having a closure member. A sensor senses a pressure differential across the closure member. A tool positioned in the valve transmits power to the valve to operate the sensor, and the sensed pressure differential is transmitted from the valve to the tool.
Claims43
A method of measuring a pressure differential across a closure member of a valve in a subterranean well, the method comprising the steps of:
- positioning the valve in the well, a flow passage extending longitudinally through the valve, and the closure member blocking flow through the flow passage;
- sensing the pressure differential in the flow passage across the closure member using at least one sensor positioned in the valve;
- conveying a tool into the flow passage;
- and
- transmitting an indication of the sensed pressure differential from the valve to the tool.
A valve for use in a subterranean well, the valve comprising:
- a flow passage formed through the valve;
- a closure member operative to selectively permit and prevent flow through the flow passage;
- and
- at least one sensor operative to sense a pressure differential in the flow passage across the closure member.
A valve system for use in a subterranean well, the valve system comprising:
- a valve positioned in the well, the valve including a closure member selectively permitting and preventing flow through a flow passage formed through the valve, and at least one sensor operative to sense a pressure differential in the flow passage across the closure member;
- and
- a tool positioned in the flow passage, the valve transmitting an indication of the sensed pressure differential to the tool.
Dependencies are inferred from the claim text.