최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0644460 (2012-10-04) |
등록번호 | US-9080917 (2015-07-14) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 0 인용 특허 : 369 |
A system for assessing one or more temperatures along an insulated conductor in an opening in a subsurface formation includes an insulated conductor with a length comprising at least two sections of insulation with different capacitances. The sections with the different capacitances include differen
A system for assessing one or more temperatures along an insulated conductor in an opening in a subsurface formation includes an insulated conductor with a length comprising at least two sections of insulation with different capacitances. The sections with the different capacitances include different takeoff temperatures for at least one dielectric property of the insulation.
1. A system for assessing one or more temperatures along an insulated conductor in an opening in a subsurface formation, comprising: an insulated conductor with the insulated conductor being divided into two or more sections along its length, at least two of the sections comprising insulation with d
1. A system for assessing one or more temperatures along an insulated conductor in an opening in a subsurface formation, comprising: an insulated conductor with the insulated conductor being divided into two or more sections along its length, at least two of the sections comprising insulation with different capacitances, wherein the sections with the different capacitances comprise different takeoff temperatures for at least one dielectric property of the insulation. 2. The system of claim 1, wherein the at least one dielectric property is monitored during use to provide a temperature of the length of the insulated conductor when the takeoff temperature of at least one of the sections is reached. 3. The system of claim 2, wherein the at least one dielectric property comprises a loss tangent of the insulation, and wherein the loss tangent of the insulation is configured to increase with temperature at a near vertical rate when the takeoff temperature is reached. 4. The system of claim 1, wherein the at least one dielectric property comprises loss tangent. 5. The system of claim 1, wherein the at least two sections of insulation with different capacitances are provided at known locations along the length of the insulated conductor. 6. The system of claim 1, wherein the insulated conductor comprises a core, an insulation material surrounding the core, and an outer sheath surrounding the insulation material. 7. A method for assessing a temperature in an opening in a subsurface formation, comprising: assessing at least one dielectric property along a length of an insulated conductor located in the opening, wherein the length of the insulated conductor is divided into two or more sections along the length, at least two of the sections comprising insulation with different capacitances, wherein the sections with the different capacitances comprise different takeoff temperatures for the at least one dielectric property; andassessing a temperature of the length of the insulated conductor to be one of the different takeoff temperatures when the takeoff temperature of at least one of the sections is reached. 8. The method of claim 7, further comprising providing electrical power to at least a portion of the insulated conductor, and providing at least some heat to the subsurface formation from the portion of the insulated conductor. 9. The method of claim 7, wherein the at least one of the dielectric property comprises a loss tangent. 10. The method of claim 7, wherein the assessed temperature is above about 400° C. 11. The method of claim 7, wherein the assessed temperature is in a range between about 400° C. and about 900° C. 12. The method of claim 7, wherein the insulated conductor comprises a core, an insulation material surrounding the core, and an outer sheath surrounding the insulation material. 13. A method for providing heat to a subsurface formation using an insulated conductor heater located in an opening in the formation, comprising: assessing a correlation between one or more dielectric properties of insulation in the insulated conductor heater and temperature in the heater;providing power to the heater to provide heat to the formation;assessing one or more of the dielectric properties along a length of the heater;assessing a temperature along the length of the heater; andreducing power to the heater when the assessed temperature increases at a rate above a selected rate at one or more locations along the length of the heater. 14. The method of claim 13, wherein the increase at the rate above the selected rate of the assessed temperature is indicative of water evaporating at one or more locations along the length of the heater. 15. The method of claim 13, further comprising turning off power to the heater when the assessed temperature increases at the rate above the selected rate at one or more locations along the length of the heater. 16. The method of claim 13, further comprising evaporating water in the formation using heat provided from the heater. 17. The method of claim 13, further comprising providing electrical power to at least one additional insulated conductor heater located in the opening, and providing at least some heat to the subsurface formation from the additional heater. 18. The method of claim 13, wherein the insulated conductor heater comprises a core, an insulation material surrounding the core, and an outer sheath surrounding the insulation material. 19. The method of claim 13, wherein the insulated conductor heater comprises insulation material that has dielectric properties that are different in two or more sections along the length of the heater. 20. A method for assessing heat flow in a pattern of insulated conductor heaters, comprising: assessing one or more dielectric properties along lengths of a plurality of insulated conductor heaters in the pattern of heaters, wherein the length of at least one insulated conductor is divided into two or more sections along the length, at least two of the sections comprising insulation with different capacitances;assessing one or more differences in temperature between the insulated conductor heaters based on the assessed dielectric properties; andproviding an image of heat flow in the pattern of heaters based on the assessed differences in temperatures. 21. The method of claim 20, further comprising providing different heat outputs from one or more of the heaters in the pattern. 22. The method of claim 20, further comprising adjusting heat outputs of one or more of the heaters in the pattern based on the image of heat flow. 23. The method of claim 20, wherein the image of heat flow is a three-dimensional (3D) image. 24. The method of claim 20, wherein the image of heat flow is a temperature differential image. 25. The method of claim 20, further comprising providing additional heaters to the pattern of heaters with the heat outputs of the additional heaters based on the image of heat flow in the pattern. 26. The method of claim 25, further comprising reducing the heat output provided from at least some of the heaters in the pattern. 27. The method of claim 20, further comprising providing at least one additional pattern of heaters adjacent to the pattern of heaters with the heat output of the heaters in the additional pattern based on the image of heat flow.
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