Positive displacement motor stators with diameter reliefs compensating for rotor tilt

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United States of America Patent

PATENT NO 11808153
APP PUB NO 20230065707A1
SERIAL NO

18048336

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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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