최소 단어 이상 선택하여야 합니다.
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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-0163617 (2014-01-24) |
등록번호 | US-9334711 (2016-05-10) |
발명자 / 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 0 인용 특허 : 368 |
A Drill-To-The-Limit (DTTL) drilling method variant to Managed Pressure Drilling (MPD) applies constant surface backpressure, whether the mud is circulating (choke valve open) or not (choke valve closed). A sensor measures the temperature in a cavity defined by a rotating control device “RCD” first
A Drill-To-The-Limit (DTTL) drilling method variant to Managed Pressure Drilling (MPD) applies constant surface backpressure, whether the mud is circulating (choke valve open) or not (choke valve closed). A sensor measures the temperature in a cavity defined by a rotating control device “RCD” first sealing element and second sealing element, an inner member and a tubular. The RCD cavity is cooled by communicating/supplying or calculating/cooling fluid to the RCD cavity.
1. Method for cooling a first sealing element of a rotating control device configured for use above a wellbore, wherein said rotating control device having an inner member, said first sealing element and a second sealing element rotatable relative to an outer member, the method comprising the steps
1. Method for cooling a first sealing element of a rotating control device configured for use above a wellbore, wherein said rotating control device having an inner member, said first sealing element and a second sealing element rotatable relative to an outer member, the method comprising the steps of: positioning a tubular with said rotating control device;sealing said first sealing element and said second sealing element of said rotating control device with said tubular;communicating a pressure to a first cavity defined by said rotating control device inner member, said rotating control device first sealing element, said rotating control device second sealing element and said tubular, said first sealing element having a first sealing element cavity side surface and a first sealing element wellbore side surface;measuring a pressure on said first sealing element wellbore side surface; andsupplying a cooling fluid in said first cavity during the step of sealing said first sealing element and said second sealing element with said tubular so that the pressure on said first sealing element cavity side surface is greater than said measured pressure on said first sealing element wellbore side surface. 2. The method of claim 1, further comprising the step of: circulating the cooling fluid in said first cavity. 3. The method of claim 1, further comprising the step of: allowing said first sealing element to pass the cooling fluid from said first cavity, wherein said passed fluid includes nitrogen from said first cavity. 4. The method of claim 1, wherein said first sealing element is an active seal, further comprising: stripping said tubular through said first sealing element after the step of supplying said cooling fluid in said first cavity; andreducing a sealing pressure of said active seal during the step of stripping said tubular. 5. The method of claim 1, wherein said first cavity configured to receive a gas and the method further comprising the step of: injecting said gas into said first cavity through a gas expansion nozzle. 6. The method of claim 1, further comprising the step of: allowing the cooling fluid to pass between said first sealing element and said tubular, wherein the cooling fluid cools said first sealing element when passed therebetween. 7. The method of claim 1, further comprising the step of: measuring said first sealing element cavity side surface pressure before and/or during the step of supplying the cooling fluid. 8. The method of claim 1, wherein said inner member having a first influent port configured for communicating said pressure and supplying said cooling fluid to said first cavity. 9. The method of claim 1, further comprising the step of: flowing a second cooling fluid adjacent said first sealing element wellbore side surface during the step of supplying said cooling fluid in the first cavity. 10. The method of claim 1, further comprising: calculating a pressure differential across the first sealing element; andincreasing the pressure differential to overcome a stretch tightness of the first sealing element;wherein the calculated pressure differential is based on a measured first sealing element cavity side surface pressure and the measured first sealing element wellbore side surface pressure; andwherein the calculating of the pressure differential is performed by a programmable logic controller. 11. The method of claim 1, further comprising: a first sensor configured for measuring the pressure on said first sealing element wellbore side surface. 12. A rotating control apparatus configured to receive a tubular, comprising: an outer member;an inner member having a first sealing element and a second sealing element, said inner member, said first sealing element and said second sealing element rotatable relative to said outer member;said inner member, the tubular, said first sealing element and said second sealing element defining a first cavity;a first sensor configured for measuring a temperature in said first cavity; anda fluid source configured to communicate with said first cavity to provide a first predetermined fluid temperature to said first cavity. 13. The apparatus of claim 12, further comprising: said outer member having a first influent port configured to communicate said first predetermined fluid temperature to said first cavity; andsaid outer member having a first effluent port configured to communicate with said first cavity. 14. The apparatus of claim 12, further comprising: a third sealing element rotatable relative to said outer member;the tubular, said inner member, said third sealing element and said second sealing element defining a second cavity; anda second fluid source configured to communicate with said second cavity to provide a second predetermined fluid temperature to said second cavity;wherein said outer member having a second influent port configured to communicate said second predetermined fluid temperature to said second cavity; andwherein said outer member having a second effluent port configured to communicate with said second cavity. 15. The apparatus of claim 14, further comprising: a second sensor configured for measuring a temperature in said second cavity. 16. A rotating control system configured to receive a tubular, comprising: a first rotating control device comprising: a first outer member;a first inner member having a first sealing element and a second sealing element; andsaid first inner member, said first sealing element, and said second sealing element rotatable relative to said first outer member, said first inner member, the tubular, said first sealing element, and said second sealing element defining a first rotating control device cavity;a sensor configured for measuring a temperature in said first rotating control device cavity; anda first fluid source configured to provide a first predetermined fluid temperature to said first rotating control device cavity. 17. The system of claim 16, further comprising: means for accumulating fluid at the first predetermined temperature to communicate with said first rotating control device cavity. 18. The system of claim 16, further comprising: a second rotating control device comprising: a second outer member;a second inner member having a third sealing element and a fourth sealing element; andsaid second inner member, said third sealing element and said fourth sealing element rotatable relative to said second outer member, said second inner member, the tubular, said third sealing element and said fourth sealing element defining a second rotating control device cavity; anda second fluid source configured to provide a second predetermined fluid temperature to said second rotating control device cavity. 19. The system of claim 18, further comprising: a second sensor configured for measuring a temperature in said second rotating control device cavity. 20. The system of claim 16, further comprising: a third sealing element rotatable relative to said outer member;the tubular, said inner member, said third sealing element and said second sealing element defining a second cavity; anda second fluid source configured to communicate with said second cavity to provide a second predetermined fluid temperature in said second cavity. 21. The system of claim 16, wherein a programmable logic controller is configured to calculate said first predetermined fluid temperature. 22. The system of claim 16, further comprising: a pressure sensor configured for measuring a pressure in said first rotating control device cavity. 23. A method for cooling a rotating control device, said rotating control device comprising an inner member having a first sealing element and a second sealing element rotatable relative to an outer member, said first sealing element having a first sealing element cavity side surface and a first sealing element wellbore side surface, the method comprising the steps of: measuring a temperature adjacent said first sealing element wellbore side surface;positioning a tubular with said rotating control device to form a first cavity, the first cavity defined by said rotating control device inner member, said rotating control device first sealing element, said rotating control device second element, and the tubular;sealing said first sealing element and said second sealing element of said rotating control device with the tubular;calculating a first predetermined fluid cavity temperature using said measured temperature adjacent said first sealing element wellbore side surface, wherein the first predetermined fluid cavity temperature is lower than the measured temperature adjacent said first sealing element wellbore side surface; andcooling the rotating control device by circulating a first fluid at the first predetermined fluid cavity temperature through said first cavity. 24. The method of claim 23, further comprising the steps of: providing a third sealing element with said inner member; andcooling a second cavity to a second predetermined fluid temperature, the second cavity defined by said rotating control device inner member, said rotating control device second sealing element and a rotating control device third sealing element when said second sealing element and said third sealing element are sealed on said tubular. 25. The method of claim 23, wherein said first predetermined fluid cavity temperature in said first cavity is lower than said measured temperature adjacent said first sealing element wellbore side surface. 26. The method of claim 23, further comprising the step of: urging one of said sealing elements to pass the first fluid from said first fluid cavity, wherein said passed fluid includes nitrogen from said first fluid cavity. 27. The method of claim 23, wherein said first predetermined fluid cavity temperature in said first cavity is different than said measured temperature adjacent said first sealing element wellbore side surface. 28. The method of claim 23, wherein the step of calculating is enabled by a programmable logic controller.
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