Position sensor for determining operational condition of...

Details Position sensor for determining operational condition of... Position sensor for determining operational condition of...

E - Fixed Constructions

21

B

E21B 47/09 (2006.01) E21B 34/06 (2006.01)

Patent

CA 2622044

Downhole tools, such as a sliding sleeve or an openhole type packer, include position indicators. The position indicators can include one or more magnets disposed in predetermined positions in the outer housing and the insert of the sliding sleeve. A casing collar locator (CCL) can be used to detect the magnets and determine the relative positions of the housing magnets and insert magnets. The relative positions of the magnets can be used to determine the operational condition of the downhole tool, i.e., whether a sliding sleeve is open or closed or how much a sealing element of an openhole type packer had to expand to seal an annulus.

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