Tapered stators in positive displacement motors remediating effects of rotor tilt

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11421533
APP PUB NO 20210310486A1
SERIAL NO

17221698

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Tapered stator designs are engineered in a positive displacement motor (PDM) power section to relieve stator stress concentrations at the lower (downhole) end of the power section in the presence of rotor tilt. A contoured stress relief (i.e. a taper) is provided in the stator to compensate for rotor tilt, where the taper is preferably more aggressive at the lower end of the stator near the bit.

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Patent Owner(s)

Patent OwnerAddress
ABACO DRILLING TECHNOLOGIES LLC713 NORTHPARK CENTRAL DRIVE HOUSTON TX 77073

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cariveau, Peter Thomas Houston, US 51 1087
Lu, Jing Houston, US 193 977
Miller, Timothy Mark Klein, US 11 82

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