EP 1892416 A1 20080227 - Highly reinforced elastomer for use in downhole stators
Title (en)
Highly reinforced elastomer for use in downhole stators
Title (de)
Hochverstärktes Elastomer für Untertagestatoren
Title (fr)
Élastomère fortement renforcé pour une utilisation dans des stators de fond de trou
Publication
Application
Priority
US 51038406 A 20060825
Abstract (en)
A Moineau stator for a downhole drilling motor and a method for fabricating the stator are disclosed. The stator includes an internal helical cavity component fabricated from an improved elastomeric material formulated to provide both high resilience and good processability. For example, in one exemplary embodiment the elastomer material includes rheological parameters M L in a range from about 1.0 to about 4.0 lb·in and M H in a range from about 75 to about 110 lb·in according to ASTM D2084 at 380 degrees F. Stators in accordance with this invention may exhibit improved efficiency (and may thus provide improved torque output) as compared with conventional stators without substantially increasing manufacturing costs.
IPC 8 full level
E21B 4/02 (2006.01); F04C 2/107 (2006.01)
CPC (source: EP US)
E21B 4/02 (2013.01 - EP US); F04C 2/1075 (2013.01 - EP US); F05C 2225/02 (2013.01 - EP US)
Citation (search report)
- [DA] US 6905319 B2 20050614 - GUO LILLIAN [US]
- [A] GB 2297092 A 19960724 - PILECI ANTONIO FERNANDO [GB]
- [A] EP 0744440 A1 19961127 - MITSUI PETROCHEMICAL IND [JP]
Designated contracting state (EPC)
DE FR GB
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
EP 1892416 A1 20080227; CA 2598813 A1 20080225; US 2008050259 A1 20080228
DOCDB simple family (application)
EP 07253324 A 20070822; CA 2598813 A 20070823; US 51038406 A 20060825