BEARING / GEARING SECTION FOR A PDM ROTOR / STATOR

Title:

BEARING / GEARING SECTION FOR A PDM ROTOR / STATOR

Document Type and Number:

WIPO Patent Application WO/2012/122321

Kind Code:

A3

Abstract:

A moving or progressive cavity motor or pump is disclosed, the motor including a rotor and a stator, the stator having one or more inserts or gearing sections to limit a lateral movement of the rotor relative to the stator. In some embodiments, the motor or pump may include a rotor and a stator, the stator including: a first, helicoidal, section comprising a compliant material having a first compressibility; a second section, helicoidal, non-helicoidal, or combination thereof, having a second compressibility, wherein the second compressibility is less than the first compressibility.

Inventors:

CLOUZEAU FRANCOIS (GB)
PUSHKAREV MAXIM (GB)
UNDERWOOD LANCE D (US)
MANSOUR BASSEM (GB)

Application Number:

PCT/US2012/028153

Publication Date:

February 21, 2013

Filing Date:

March 08, 2012

Export Citation:

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Assignee:

SCHLUMBERGER CA LTD (CA)
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER HOLDINGS (GB)
SCHLUMBERGER TECHNOLOGY BV (NL)
PRAD RES & DEV LTD (GB)
CLOUZEAU FRANCOIS (GB)
PUSHKAREV MAXIM (GB)
UNDERWOOD LANCE D (US)
MANSOUR BASSEM (GB)

International Classes:

E21B4/02; F01C1/107; F04C2/107; F04C18/107

Foreign References:

US20060182644A1	2006-08-17
US3912426A	1975-10-14
US3982858A	1976-09-28
US20080304992A1	2008-12-11

Other References: