Induction choke for power distribution in piping structure
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-043/00
E21B-001/00
출원번호
US-0769048
(2001-01-24)
발명자
/ 주소
Bass, Ronald Marshall
Vinegar, Harold J.
Burnett, Robert Rex
Savage, William Mountjoy
Carl, Jr., Frederick Gordon
Hirsch, John Michele
Stegemeier, George Leo
출원인 / 주소
Shell Oil Company
인용정보
피인용 횟수 :
17인용 특허 :
80
초록▼
A current impedance device for routing a time-varying electrical current in a piping structure comprising an induction choke. The induction choke is generally concentric about a portion of the piping structure such that during operation a voltage potential forms between the piping structure and an e
A current impedance device for routing a time-varying electrical current in a piping structure comprising an induction choke. The induction choke is generally concentric about a portion of the piping structure such that during operation a voltage potential forms between the piping structure and an electrical return when the time-varying electrical current is transmitted through and along the piping structure, and such that during operation part of the current can be routed through a device electrically connected to the piping structure due to the voltage potential formed. The induction choke may be unpowered and may comprise a ferromagnetic material. A system for defining an electrical circuit in a piping structure using at least one unpowered ferromagnetic induction choke, comprises an electrically conductive portion of the piping structure, a source of time-varying current, at least one induction choke, a device, and an electrical return. The system can have various configurations and embodiments to define a plurality of possible electrical circuits formed using at least one induction choke to route time-varying current. An electric power transformer can also be incorporated. The system is adapted to provide power and/or communications for the device via the piping structure. One possible application of the system is in a petroleum well where a downhole device can send or receive power and/or communication signals via a piping structure of the well.
대표청구항▼
A current impedance device for routing a time-varying electrical current in a piping structure comprising an induction choke. The induction choke is generally concentric about a portion of the piping structure such that during operation a voltage potential forms between the piping structure and an e
A current impedance device for routing a time-varying electrical current in a piping structure comprising an induction choke. The induction choke is generally concentric about a portion of the piping structure such that during operation a voltage potential forms between the piping structure and an electrical return when the time-varying electrical current is transmitted through and along the piping structure, and such that during operation part of the current can be routed through a device electrically connected to the piping structure due to the voltage potential formed. The induction choke may be unpowered and may comprise a ferromagnetic material. A system for defining an electrical circuit in a piping structure using at least one unpowered ferromagnetic induction choke, comprises an electrically conductive portion of the piping structure, a source of time-varying current, at least one induction choke, a device, and an electrical return. The system can have various configurations and embodiments to define a plurality of possible electrical circuits formed using at least one induction choke to route time-varying current. An electric power transformer can also be incorporated. The system is adapted to provide power and/or communications for the device via the piping structure. One possible application of the system is in a petroleum well where a downhole device can send or receive power and/or communication signals via a piping structure of the well. microns to about 3000 microns containing an internal temperature activated breaker is comprised of water, a hydratable polymer selected from the group consisting of hydroxyalkylcellulose grafted with vinyl phosphonic acid, acrylic polymers, acrylamide polymers and polysaccharide polymers, a delayed breaker selected from the group consisting of hemicellulase, encapsulated ammonium persulfate, ammonium persulfate activated with ethanol amines and sodium chlorite, and a cross-linking agent comprised of a Bronsted-Lowry or Lewis base. 4. The method of claim 3 wherein said hydratable polymer is hydroxyethylcellulose grafted with vinyl phosphonic acid. 5. The method of claim 3 wherein said cross-linking agent is magnesium oxide. 6. The method of claim 1 wherein said particulate cross-linked aqueous gel having a size in the range of from about 100 microns to about 3000 microns containing an internal temperature activated breaker is present in said cement composition in an amount in the range of from about 10% to about 50% by weight of hydraulic cement in said composition. 7. The method of claim 1 wherein said dehydrated particulate cross-linked aqueous gel in said composition having a size in the range of from about 40 microns to about 500 microns containing an internal temperature activated breaker is comprised of a dehydrated cross-linked aqueous gel comprised of a polymer selected from the group consisting of hydroxyalkylcellulose grafted with vinyl phosphonic acid, acrylic polymers, acrylamide polymers and polysaccharide polymers, a delayed breaker selected from the group consisting of hemicellulase, encapsulated ammonium persulfate, ammonium persulfate activated with ethanol amines and sodium chlorite, and a cross-linking agent comprised of a Bronsted-Lowry or Lewis base. 8. The method of claim 7 wherein said hydratable polymer is hydroxyethylcellulose grafted with vinyl phosphonic acid. 9. The method of claim 7 wherein said cross-linking agent is magnesium oxide. 10. The method of claim 1 wherein said particulate dehydrated cross-linked aqueous gel having a size in the range of from about 40 microns to about 500 microns containing an internal temperature activated breaker is present in said cement composition in an amount in the range of from about 5% to about 30% by weight of hydraulic cement in said composition. 11. The method of claim 1 wherein said water in said composition is selected from the group consisting of fresh water and salt water. 12. The method of claim 1 wherein said water is present in said composition in an amount in the range of from about 20% to about 50% by weight of cement in said composition. 13. The method of claim 1 wherein said cement composition prepared in accordance with step (a) further comprises a gas present in an amount sufficient to form a foam and a mixture of foaming and foam stabilizing surfactants. 14. The method of claim 13 wherein said gas in said composition is selected from the group consisting of air and nitrogen. 15. The method of claim 13 wherein said mixture of foaming and foam stabilizing surfactants in said composition is comprised of ethoxylated hexanol ether sulfate, cocoylamidopropylbetaine and cocoylamidopropyldimethylamine oxide. 16. The method of claim 13 wherein said mixture of foaming and foam stabilizing surfactants is present in said composition in the range of from about 1% to about 5% by volume of water in said composition. 17. A method of forming a permeable cement composition sand screen in a cased well bore adjacent to an open-hole fluid producing zone therein below the casing comprising the steps of: (a) placing an expandable slotted pipe in said fluid producing zone; (b) expanding said slotted pipe to the size of said casing in said well bore; (c) preparing a cement composition comprised of a hydraulic cement, a particulate cross-linked aqueous gel having a size in the range of from about 100 microns to about 3000 microns containing an internal temperature a ctivated breaker which causes said gel to break into a liquid, a particulate dehydrated cross-linked aqueous gel having a size in the range of from about 40 microns to about 500 microns containing an internal temperature activated breaker which causes said gel to break into a liquid, and water present in an amount sufficient to form a slurry; (d) placing said cement composition prepared in step (c) in said well bore adjacent to said fluid producing zone within said expanded slotted pipe therein, between said expanded slotted pipe and said open-hole well bore and within voids or fractures in said producing zone; (e) allowing said cement composition to set and said particulate cross-linked aqueous gels containing internal temperature activated breakers to break whereby a permeated set cement composition is formed in said open-hole producing zone; (f) drilling out said set cement composition within said expanded slotted pipe; and (g) introducing an aqueous acid solution into contact with said permeated set cement composition whereby the aqueous acid solution flows through the permeations in said set cement composition and dissolves any portions of said set cement composition blocking said permeations. 18. The method of claim 17 which further comprises the step of enlarging the diameter of said open-hole producing zone prior to placing said expandable slotted pipe in said fluid producing zone in accordance with step (a). 19. The method of claim 17 wherein said hydraulic cement in said cement composition is Portland cement or the equivalent. 20. The method of claim 17 wherein said particulate cross-linked aqueous gel in said composition having a size in the range of from about 100 microns to about 3000 microns containing an internal temperature activated breaker is comprised of water, a hydratable polymer selected from the group consisting of hydroxyalkylcellulose grafted with vinyl phosphonic acid, acrylic polymers, acrylamide polymers and polysaccharide polymers, a delayed breaker selected from the group consisting of hemicellulase, encapsulated ammonium persulfate, ammonium persulfate activated with ethanol amines and sodium chlorite, and a cross-linking agent comprised of a Bronsted-Lowry or Lewis base. 21. The method of claim 20 wherein said hydratable polymer is hydroxyethylcellulose grafted with vinyl phosphonic acid. 22. The method of claim 20 wherein said cross-linking agent is magnesium oxide. 23. The method of claim 17 wherein said particulate cross-linked aqueous gel having a size in the range of from about 100 microns to about 3000 microns containing an internal temperature activated breaker is present in said cement composition in an amount in the range of from about 10% to about 50% by weight of hydraulic cement in said composition. 24. The method of claim 17 wherein said dehydrated particulate cross-linked aqueous gel in said composition having a size in the range of from about 40 microns to about 500 microns containing an internal temperature activated breaker is comprised of a dehydrated cross-linked aqueous gel comprised of a polymer selected from the group consisting of hydroxyalkylcellulose grafted with vinyl phosphonic acid, acrylic polymers, acrylamide polymers and polysaccharide polymers, a delayed breaker selected from the group consisting of hemicellulase, encapsulated ammonium persulfate, ammonium persulfate activated with ethanol amines and sodium chlorite, and a cross-linking agent comprised of a Bronsted-Lowry or Lewis base. 25. The method of claim 24 wherein said hydratable polymer is hydroxyethylcellulose grafted with vinyl phosphonic acid. 26. The method of claim 24 wherein said cross-linking agent is magnesium oxide. 27. The method of claim 17 wherein said particulate dehydrated cross-linked aqueous gel having a size in the range of from about 40 microns to about 500 microns containing an internal temperature activated breaker is present in said cement composition in an amount in the range of from about 5% to about 30% by weight of hydraulic cement in said composition. 28. The method of claim 17 wherein said water in said composition is selected from the group consisting of fresh water and salt water. 29. The method of claim 17 wherein said water is present in said composition in an amount in the range of from about 20% to about 50% by weight of cement in said composition. 30. The method of claim 17 wherein said cement composition prepared in accordance with step (a) further comprises a gas present in an amount sufficient to form a foam and a mixture of foaming and foam stabilizing surfactants. 31. The method of claim 30 wherein said gas in said composition is selected from the group consisting of air and nitrogen. 32. The method of claim 30 wherein said mixture of foaming and foam stabilizing surfactants in said composition is comprised of ethoxylated hexanol ether sulfate, cocoylamidopropylbetaine and cocoylamidopropyldimethylamine oxide. 33. The method of claim 30 wherein said mixture of foaming and foam stabilizing surfactants is present in said composition in the range of from about 1% to about 5% by volume of water in said composition. nected to said electrically conductive portion of said piping structure at a location along said first location; an induction choke located about part of said electrically conductive portion of said piping structure; a device comprising two terminals, a first of said device terminals being electrically connected to said electrically conductive portion of said piping structure; and an electrical return electrically connecting between a second of said device terminals and said source to complete said electrical circuit. 12. A system in accordance with claim 11, wherein said choke is located along said second location, and said electrical connection location for said first device terminal is between said choke and said electrical connection location for said source. 13. A system in accordance with claim 12, wherein said piping structure is part of a petroleum well, said first location is near the surface, and said second location is downhole in a borehole of said well. 14. A system in accordance with claim 12, further comprising: a current impedance apparatus located about a portion of said piping structure along said first location, such that said source is connected to said piping structure between said current impedance apparatus and said choke. 15. A system in accordance with claim 14, further comprising: an electric power transformer located about a portion of said piping structure between said current impedance apparatus and said choke. 16. A system in accordance with claim 11, wherein said choke is located along said first location, said electrical connection location for said first device terminal is along said second location, and said electrical connection location for said source is between said choke and said electrical connection location for said first device terminal. 17. A system in accordance with claim 16, wherein said piping structure is part of a petroleum well, said first location is near the surface, and said second location is downhole in a borehole of said well. 18. A system in accordance with claim 16, further comprising: an electric power transformer located about a portion of said piping structure, such that said electrical connection location for said source is between said choke and said transformer. 19. A system in accordance with claim 11, wherein said induction choke comprises a ferromagnetic material. 20. A system in accordance with claim 11, wherein said induction choke is not electrically powered, and said induction choke functions based on its magnetic material properties, its geometry, its size, and its placement relative to said piping structure. 21. A system in accordance with claim 11, wherein said induction choke is electrically insulated from said piping structure. 22. A system for providing power or communications to a remote device, comprising: a piping structure comprising a first location, a second location, and an electrically conductive portion extending between said first and second locations, wherein said first and second locations are distally spaced along said piping structure; an induction choke enveloping part of said piping structure; a source of time-varying current electrically connected to said electrically conductive portion of said piping structure for supplying primary electrical current; a transformer located proximate said piping structure and adapted to form a secondary coil for supplying secondary electrical current corresponding to said primary electrical current when said primary electrical current is flowing in said electrically conductive portion of said piping structure, wherein said electrically conductive portion of said piping structure acts as a primary coil; an electrical return electrically connecting said electrically conductive portion of said piping structure and said source to complete an electrical circuit, such that said transformer is located between said connection of said source and said connection of said electrical re turn to said piping structure; and a device electrically connected to said transformer for receiving said secondary electrical current. 23. A petroleum well for producing petroleum products, comprising: a piping structure comprising a first location, a second location, and an electrically conductive portion extending between said first and second locations, wherein said first and second locations are distally spaced along said piping structure; an electrical circuit comprising said electrically conductive portion of said piping structure, a source of time-varying current, an induction choke, a device, and an electrical return; said source of time-varying current being electrically connected to said electrically conductive portion of said piping structure proximate said first location; said induction choke positioned proximate part of said electrically conductive portion of said piping structure; said device comprising two terminals, a first of said device terminals being electrically connected to said electrically conductive portion of said piping structure; and said electrical return electrically connecting between a second of said device terminals and said source to complete said electrical circuit. 24. A petroleum well in accordance with claim 23, wherein said choke is located along said second location, and said electrical connection location for said first device terminal is between said choke and said electrical connection location for said source. 25. A petroleum well in accordance with claim 24, wherein said first location is near the surface and said second location is downhole in a borehole. 26. A petroleum well in accordance with claim 24, further comprising: a second induction choke located about a portion of said piping structure along said first location, such that said source is connected to said piping structure between said chokes. 27. A petroleum well in accordance with claim 26, further comprising: an electric power transformer located about a portion of said piping structure between said chokes. 28. A petroleum well in accordance with claim 24, further comprising: an electric power transformer located about a portion of said piping structure between said electrical connection location for said source and said choke. 29. A petroleum well in accordance with claim 28, wherein said electric power transformer comprises a ferromagnetic toroid wound by wire such that said wire is generally parallel to a central axis of said toroid when wound about said toroid. 30. A petroleum well in accordance with claim 23, wherein said choke is located along said first location, said electrical connection location for said first device terminal is along said second location, and said electrical connection location for said source is between said choke and said electrical connection location for said first device terminal. 31. A petroleum well in accordance with claim 23, wherein said first location is near the surface and said second location is downhole in a borehole. 32. A petroleum well in accordance with claim 23, further comprising: a second induction choke located about a portion of said piping structure along said second location, such that said electrical connection location for said source is between said chokes, and such that said electrical connection location for said first device terminal is between said second choke and said electrical connection location for said source. 33. A petroleum well in accordance with claim 23, further comprising: an electric power transformer located about a portion of said piping structure, such that said electrical connection location for said source is between said choke and said transformer. 34. A petroleum well in accordance with claim 33, wherein said electric power transformer comprises a ferromagnetic toroid wound by wire such that said wire is generally parallel to a central axis of said toroid when wound about said toroid. 35. A petroleum
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이 특허에 인용된 특허 (80)
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