F - Mech Eng,Light,Heat,Weapons – 03 – C
Patent
F - Mech Eng,Light,Heat,Weapons
03
C
F03C 2/08 (2006.01) B29C 70/08 (2006.01) B29C 70/34 (2006.01) E21B 4/02 (2006.01) F01C 1/107 (2006.01) F04C 2/107 (2006.01) B29C 53/38 (2006.01) B29C 63/06 (2006.01)
Patent
CA 2411989
A method of forming a stator for a positive displacement motor. The method includes forming a liner that includes at least two resilient layers and at least one fiber layer, and the at least two resilient layers are positioned so as to enclose the at least one fiber layer. The liner is positioned in a stator tube, and the stator tube includes a shaped inner surface including at least two radially inwardly projecting lobes extending helically along a selected length of the stator tube. The liner is cured in the stator tube so that the liner conforms to the radially inwardly projecting lobes formed on the inner surface and to the helical shape of the inner surface. The curing forms a bond between the liner and the inner surface and between the at least two resilient layers and the at least one fiber layer.
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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