(WO2018222530) Mud motor inverse power section 机翻标题: 暂无翻译,请尝试点击翻译按钮。

源语言标题
(WO2018222530) Mud motor inverse power section
公开号/公开日
WO2018222530 / 2018-12-06
申请号/申请日
WOUS2018034639 / 2018-05-25
发明人
SICILIAN JOSHUA ALANALI FARAZ;
申请人
REMY TECHNOLOGIES;
主分类号
IPC分类号
E21B-004/00 E21B-004/02 F04C-002/107
摘要
(WO2018222530) A progressive cavity positive displacement motor having a solid metal stator (26) and a rotor (25) having an elastomeric seal layer (31) on its outer surface, as well as a method of manufacturing the motor.The elastomeric seal lay on the rotor can be formed by extruding the uncured elastomer, applying the extrusion to the metal rotor core and machining the cured elastomer to produce a uniform thickness seal layer.The elastomer can be made from a high molecular weight elastomer compound.Graphene additives can further enhance the performance characteristics of the elastomer.
机翻摘要
暂无翻译结果,您可以尝试点击头部的翻译按钮。
地址
代理人
(WO2018222530) SHOUSE, Emily A. ([US])
代理机构
;
优先权号
2017US-15608792
主权利要求
(WO2018222530) 1. CLAIMS What is claimed is: 1 . A mud motor comprising:   a mud motor power section including a stator having a longitudinal axis, a passage along the longitudinal axis and a set of stator lobes forming a stator inner surface that surrounds the passage;   a rotor disposed within the passage, the rotor having a set of rotor lobes formed on an outer surface of the rotor facing the stator inner surface, the outer surface having a high molecular weight thermoset elastomeric seal layer. 2. The mud motor of claim 1 , wherein the high molecular weight thermoset elastomeric seal layer is formed from an uncured elastomer having a viscosity of more than 55 Mooney units at 212° F. 3. The mud motor of claim 1 , wherein the high molecular weight thermoset elastomeric seal layer is a polyaryl polymer. 4. The mud motor of claim 1 , wherein the high molecular weight thermoset elastomeric seal layer is a polyaryl polymer including PAEK, PEK, PEEK, PEKEK, or PEKEKK and combinations thereof. 5. The mud motor of claim 1 , wherein the high molecular weight thermoset elastomeric seal layer is a nitrile polymer including NBR, HNBR, XNBR or HXNBR and combinations thereof. 6. The mud motor of claim 1 , wherein the high molecular weight thermoset elastomeric seal layer includes graphene particles and a nitrile polymer. 7. The mud motor of claim 6, wherein the graphene particles are functionalized graphene particles having a single mono-carbon layer sheet thickness. 8. The mud motor of claim 6, wherein the graphene particles are functionalized graphene particles having a 2-30 mono-carbon layer sheet thickness. 9. The mud motor of claim 1 , wherein the high molecular weight thermoset elastomeric seal layer is made from a nitrile or polyaryl polymer having a uniaxial tension stress of at least 100 psi at a strain of 0.075 at 240° F. 10. The mud motor of claim 1 , wherein the high molecular weight thermoset elastomeric seal layer is made from a nitrile or polyaryl polymer having a planar shear stress of at least 180 psi at a strain of 0.075 at 240° F. 11. The mud motor of claim 1 , wherein the high molecular weight thermoset elastomeric seal layer is made from a nitrile or polyaryl polymer having a uniaxial compression stress of at least 140 psi at a strain of 0.075 at 240° F. 12. The mud motor of claim 1 , wherein the stator is a ferrous metal and the stator inner surface includes a coating of a pure metal, a metal alloy, a carbide or a metal oxide. 13. The mud motor of claim 12, wherein the coating is a tungsten carbide coating. 14. A method of manufacturing a mud motor comprising:   providing an intermediate assembly including a mud motor rotor core, the rotor core having a contoured surface defining a set of rotor lobes extending along a length of the rotor core, the set of rotor lobes formed by helical lobe crests separated from each other by helical lobe valleys,   wrapping a length of an uncured first high molecular weight elastomer in a helical pattern around the intermediate assembly to cover an intermediate assembly outer surface and form a rotor core final assembly;   curing the high molecular weight elastomer in the final assembly;   machining the cured high molecular weight elastomer in the final assembly to form an uniform cured elastomeric seal layer. 15. The method of claim 14, wherein providing an intermediate assembly further includes winding a length of an uncured second high molecular weight elastomer extrusion in each helical lobe valley to form a substantially cylindrical outer surface, prior to wrapping the length of an uncured first high molecular weight elastomer on the intermediate assembly outer surface. 16. The method of claim 15 wherein,   the rotor core includes a longitudinal bore, and wherein curing the first and second high molecular weight elastomer includes passing a heated fluid through the bore. 17. The method of claim 16, wherein the heated fluid is steam. 18. The method of claim 16, wherein the heated fluid is glycol. 19. The method of claim 16, wherein the heated fluid is a thermally stable oil. 20. The method of claim 14, wherein the rotor core final assembly includes a final assembly outer surface, and wherein curing includes encasing the final assembly outer surface with a wetted nylon web and heating the encased final assembly in an autoclave or oven to cure the first and second high molecular weight elastomer. 21. The method of claim 14, wherein curing includes heating uncured first and second high molecular weight elastomers to at least 275° F. 22. The method of claim 14, wherein curing includes heating uncured first and second high molecular weight elastomers to at least 300° F. 23. The method of claim 14 wherein curing includes heating the final rotor assembly to at least 275° F in a chamber. 24. The method of claim 23, wherein the rotor core includes a longitudinal bore, and wherein curing the first and second high molecular weight elastomer includes passing a heated fluid through the bore. 25. The method of claim 14, wherein the rotor core includes a longitudinal bore, and wherein curing the first and second high molecular weight elastomer heating the rotor core using a resistive or inductive electric heating element.
法律状态
PENDING
专利类型码
A1
国别省市代码
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