Methods for mitigating whirl

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11512540
APP PUB NO 20210131197A1
SERIAL NO

17075740

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Importance

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Abstract

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A method of mitigating whirl on a rotating device includes detecting force on a outer surface of the rotating device and switching the rotating device between a rotating mode and a non-rotating mode. In the rotating mode, the outer surface may rotate with an inner sleeve. In the non-rotating mode, the outer surface may be rotationally isolated from the inner sleeve. The rotating device may include a stabilizer with an active or passive system for switching modes. The stabilizer can include an outer collar, an inner sleeve, and a locking mechanism. The locking mechanism is changeable between a first mode in which the outer collar is rotationally fixed to the inner sleeve and a second mode in which the outer collar is rotationally isolated relative to the inner sleeve. An example passive device may include a magnetic clutch where the detected force overcomes magnetic forces to change mode.

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Patent Owner(s)

  • DOWELL -- A DIVISION OF SCHLUMBERGER TECHNOLOGY CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hird, Jonathan Robert Cambridge, GB 20 76
Johnson, Ashley Bernard Cambridge, GB 69 947
Panayirci, Huseyin Murat Cambridge, GB 3 5
Sihler, Joachim Cambridge, GB 32 315

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