Position measurement system for correlation array
AssigneeHalliburton Energy Services, Inc.
InventorsDonald G. Kyle, Nicholas Cole Ashford, Adam Harold Martin, Michael Linley Fripp
Life of this patent
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Abstract
This disclosure may generally relate to operations performed in a wellbore. More particularly, systems and methods may be provided for measuring the position of a tool and/or tubular string downhole. The present disclosure may be able to determine an accurate position change in a downhole tool without requiring surface equipment manipulation during measurement acquisition. A position measurement system may comprise a position measurement tool, wherein the position measurement tool comprises a sensor module and a telemetry module; and a marker, wherein the marker emits a signal measured by the sensor module.
Claims18
A method for identifying a location of an internal movable structure with respect to a position measurement tool, comprising:
- lowering a tubular string into a casing within a wellbore, wherein the tubular string comprises:
- the internal movable structure;
- and
- the position measurement tool,
- wherein after lowering the tubular string into the casing, the method further comprises:
- performing an operation which causes the internal movable structure to move with respect to the position measurement tool;
- receiving by a first sensor module, disposed on the position measurement tool, a first signal from a marker disposed on the internal movable structure;
- receiving by a second sensor module, disposed on the position measurement tool, a second signal from the marker;
- and
- calculating the location of the internal movable structure with respect to the position measurement tool using the first signal and the second signal.
A tubular string disposed within a casing, comprising:
- an internal movable structure, comprising:
- a marker;
- and
- a position measurement tool, comprising:
- a first sensor module configured to measure a first distance to the marker;
- a second sensor module configured to measure a second distance to the marker;
- and a processor,
- wherein after being disposed within the casing of a wellbore, the tubular string is configured to:
- perform an operation which causes the internal movable structure to move with respect to the position measurement tool, and
- wherein after the operation, the processor is configured to:
- receive, by the first sensor module, a first signal from the marker;
- receive by the second sensor module, a second signal from the marker;
- and
- calculate a location of the internal movable structure with respect to the position measurement tool using the first signal and second signal.
Dependencies are inferred from the claim text.