Electrical submersible pump system having high temperature insulation materials
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01B-007/18
H02K-003/30
H01B-007/04
H01B-007/282
H01B-007/08
출원번호
US-0108416
(2011-05-16)
등록번호
US-8692115
(2014-04-08)
발명자
/ 주소
Rumbaugh, Michael R.
Evenson, Jim F.
Reynolds, Jackson E.
Korte, David G.
Livingston, David W.
Frey, Jeffrey G.
출원인 / 주소
Baker Hughes Incorporated
대리인 / 주소
Bracewell & Giuliani LLP
인용정보
피인용 횟수 :
0인용 특허 :
36
초록▼
Electric submersible well pumping systems operable in well temperatures of above about 180° C. (356° F.) utilize high temperature electrical insulation. The electrical insulation includes E-base polyimide films or perfluoropolymer TE films on various components. The insulation films are employed aro
Electric submersible well pumping systems operable in well temperatures of above about 180° C. (356° F.) utilize high temperature electrical insulation. The electrical insulation includes E-base polyimide films or perfluoropolymer TE films on various components. The insulation films are employed around magnet wires that are threaded through slots in the stator. Slot insulation of E-base polyimide or perfluoropolymer TE film surrounds the magnet wires in the stator slots. Sheets of E-base polyimide or perfluoropolymer TE film extend around and between phase loops of the magnet wire at the lower end of the stator. The motor contains a PAO oil having additives to dissipate acid generated by epoxy used in the motor.
대표청구항▼
1. An electric submersible pumping system comprising: a pump;an electric motor coupled to the pump;a motor lead for connection to a power cable, the motor lead having a connector at a terminal end that connects to the motor;the motor and the motor lead having a plurality of electrical conductors;an
1. An electric submersible pumping system comprising: a pump;an electric motor coupled to the pump;a motor lead for connection to a power cable, the motor lead having a connector at a terminal end that connects to the motor;the motor and the motor lead having a plurality of electrical conductors;an electrical insulation on at least some of the conductors, comprising:a tape of a polyimide film having inner and outer adhesive layers having a first wrap wrapped helically around one of the conductors in a first direction, and a second wrap wrapped helically around the first wrap in a second direction;the outer adhesive layer of the first wrap bonded to the inner adhesive layer of the second wrap; andthe outer adhesive layer of the second wrap being free of bonding engagement with any other insulation layers. 2. The system of claim 1, wherein the electrical insulation is located on magnet wires within the electrical motor. 3. The system of claim 1, wherein the electrical insulation is located on the conductors of the motor lead. 4. The system of claim 1, wherein: the electric motor includes a stator having a plurality of slots, each of the slots having a bundle of magnet wires and a slot insulation surrounding each of the bundles in the slots; and wherein the slot insulation comprises:a sheet of polyimide film. 5. The system of claim 1, wherein the sheet of polyimide film is sandwiched between inner and outer sheets of polymeric films that differ from the polyimide film. 6. The system of claim 5, wherein the slot insulation further comprises: an inner sheet of polyether ether ketone (PEEK) film; andan outer sheet of polytetrafluoroethylene (PTFE) film, with the polyimide film being sandwiched between. 7. The system of claim 1, wherein: the electric motor has a stator having a plurality of slots through which magnet wire is installed;the magnet wires protrude past the lower end of the stator in loops and are positioned around an end bell area; and wherein the system further comprises:an end bell insulation comprising a sheet of polyimide film and extending around all of the loops. 8. The system of claim 7, wherein the sheet of polyimide film is sandwiched between inner and outer sheets of polymeric films that differ from the polyimide film. 9. The system of claim 8, wherein each of the inner and outer sheets comprises polytetrafluoroethylene (PTFE) film. 10. The system of claim 7, wherein: the loops of magnet wire are grouped into three phases, each of the phases being positioned at a different distance from a longitudinal axis of the motor; and wherein the system further comprises:a phase-to-phase insulation sheet formed as a cylinder and located between each of the phases of magnet wire loops; andeach of the phase-to-phase insulation sheets comprises a polyimide film. 11. The system of claim 10, wherein: each of the sheets of polyimide film is sandwiched between inner and outer sheets of polymeric films that differ from the polyimide film. 12. The system of claim 11, wherein each of the inner and outer sheets comprise polytetrafluoroethylene (PTFE) film. 13. The system of claim 1, further comprising: a motor housing receptacle to which the connector of the power cable assembly releasably attaches, the receptacle having a plurality of internal electrical contacts;a stator within the housing and having a plurality of slots;three magnet wires, each being threaded within various ones of the slots for each phase of the motor, each of the magnet wires having at least one insulation layer;each of the magnet wires within the slots of the stator having an upper portion extending above the stator with an upper end configured as an electrical terminal that releasably attaches to one of the internal electrical contacts, each of the magnet wires within the slots of the stator being a continuous wire without splices from within the stator to the electrical terminal; andat least one tube formed of an insulation material surrounding but not bonded to the insulation layer on each of the motor leads, the at least one tube having a lower end at an upper end of the stator and an upper end at the electrical terminal. 14. The system according to claim 13, wherein the at least one tube comprises inner and outer tubes, one of the tubes being formed of perfluoroalkoxy (PFA) and the other tube being formed of polytetrafluoroethylene (PTFE). 15. The system of claim 1, wherein: the electric motor comprises a stator having a plurality of slots through which three separates magnet wires are installed, defining three electrical phases;the three magnet wires being joined to each other below the stator, defining a Y-point connection; and wherein the system further comprises:an insulation tape wrapped around the Y-point connection, the insulation tape comprising a Y-point tape of a polyimide film having inner and outer adhesive layers having a first wrap wrapped helically around one of the conductors in a first direction, and a second wrap wrapped helically around the first wrap of the Y-point connection in a second direction;the outer adhesive layer of the first wrap of the Y-point connection bonded to the inner adhesive layer of the second wrap of the Y-point connection; andthe outer adhesive layer of the second wrap of the Y-point connection being free of bonding engagement with any other insulation layers. 16. The system of claim 1, further comprising: a poly alpha olefin (PAO) lubricant contained in the motor; anda buffer in the lubricant for dissipating amino acid generated within the motor. 17. An electric submersible pumping system, comprising: a pump;an electric motor coupled to the pump, the motor having a stator containing a plurality of slots;a plurality of magnet wires threaded within various ones of the slots, each of the magnet wires having an electrical conductor;a magnet wire tape of a polyimide film having inner and outer adhesive layers having a first wrap wrapped helically around each of the conductors in a first direction, and a second wrap wrapped helically around the first wrap in a second direction;the outer adhesive layer of the first wrap bonded to the inner adhesive layer of the second wrap; andthe outer adhesive layer of the second wrap being free of bonding engagement with any other insulation layers. 18. The system according to claim 17, wherein: the magnet wires are joined to each other below the stator, defining a Y-point connection; and wherein the system further comprises:an insulation tape wrapped around the Y-point connection, the insulation tape comprising a Y-point tape of a polyimide film having inner and outer adhesive layers having a first wrap wrapped helically around one of the conductors in a first direction, and a second wrap wrapped helically around the first wrap of the Y-point connection in a second direction;the outer adhesive layer of the first wrap of the Y-point connection bonded to the inner adhesive layer of the second wrap of the Y-point connection; andthe outer adhesive layer of the second wrap of the Y-point connection being free of bonding engagement with any other insulation layers. 19. An electric submersible pumping system comprising: a pump;an electric motor coupled to the pump;a motor lead for connection to a power cable, the motor lead having a plurality of electrical conductors and a connector at a terminal end that connects to the motor;a motor lead tape of a polyimide film having inner and outer adhesive layers having a first wrap wrapped helically around each of the conductors in a first direction, and a second wrap wrapped helically around the first wrap in a second direction;the outer adhesive layer of the first wrap bonded to the inner adhesive layer of the second wrap; andthe outer adhesive layer of the second wrap being free of bonding engagement with any other insulation layers. 20. The system according to claim 19, wherein the motor has a stator containing a plurality of slots, each of the slots having magnet wires wound therethrough, each of the magnet wires having an electrical magnet wire conductor, and wherein the system further comprises: a magnet wire tape of a polyimide film having inner and outer adhesive layers, the magnet wire tape having a first wrap wrapped helically around each of the magnet wire conductors in a first direction, and a second wrap wrapped helically around the first wrap of the magnet wire tape in a second direction;the outer adhesive layer of the first wrap of the magnet wire tape bonded to the inner adhesive layer of the second wrap of the magnet wire tape; andthe outer adhesive layer of the second wrap of the magnet wire tape being free of bonding engagement with any other insulation layers.
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