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1.发明申请公开(公告)号：US20180320509A1
公开(公告)日：2018-11-08
申请号：US15773538
申请日：2015-12-15
CPC分类号： E21B47/123 , E21B47/06 , E21B47/121 , G01V3/26 , G01V3/34
摘要： Electromagnetic field monitoring methods and systems for obtaining data corresponding to subsurface rock formations. An electromagnetic field monitoring system includes an electromagnetic transmitter located downhole in a well bore and configured to radiate electromagnetic radiation into a subsurface formation; a fiber optic cable coupled with a fiber optic interrogator, the at least one fiber optic cable and the interrogator located at the surface; and an array of electromagnetic sensors integrally formed in the fiber optic cable and configured to detect the electromagnetic radiation radiated through the subsurface formation. A method of detecting electromagnetic radiation at the surface of an oil well includes transmitting, from an electromagnetic transmitter, electromagnetic radiation into a subsurface formation; and sensing, from the subsurface formation, electromagnetic radiation at the surface of the oil well.
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2.发明公开公开(公告)号：US20240192037A1
公开(公告)日：2024-06-13
申请号：US18080502
申请日：2022-12-13
发明人： Ketankumar Kantilal SHETH , Donn J. BROWN , Robert Charles DE LONG , Christopher Michael JONES , Etienne SAMSON , Bin DAI
CPC分类号： G01F1/684 , E21B43/38 , F04D1/00 , F04D13/10 , G01F1/6965
摘要： A fluid flow rate sensor. The fluid flow rate sensor comprises an elongated structure; a heating element installed into a first end of the elongated structure; a first temperature transducer coupled to an outside of the elongated structure at a first predefined location; a second temperature transducer coupled to the outside of the elongated structure at a second predefined location; and a control unit that is configured to turn the heating element on and off, to analyze a first temperature indication received from the first temperature transducer, to analyze a second temperature indication received from the second temperature transducer, to determine a flow rate of a fluid that is in intimate contact with the outside of the elongated structure based on analyzing the first temperature indication and the second temperature indication, and to output the flow rate via a communication line.
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公开(公告)号：US20180259672A1
公开(公告)日：2018-09-13
申请号：US15759806
申请日：2015-12-17
CPC分类号： G01V3/28 , E21B43/20 , E21B47/10 , E21B47/102 , G01V3/34
摘要： A well monitoring system includes a plurality of transmitter coils coupled to an exterior of a casing positioned within a wellbore, wherein one or more first transmitter coils are positioned at a first location and one or more second transmitter coils are positioned at a second location axially offset from the first location. At least one receiver coil is coupled to the exterior of the casing and positioned at the second location. A power source is communicably coupled to the one or more first and second transmitter coils. The one or more first transmitter coils generates a magnetic field detectable by the at least one receiver coil, and the one or more second transmitter coils generates a bucking signal that minimizes a direct coupling between the one or more first transmitter coils and the at least one receiver coil.
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公开(公告)号：US20190136639A1
公开(公告)日：2019-05-09
申请号：US16315990
申请日：2016-09-30
CPC分类号： E21B17/003 , E21B47/00 , G01D5/268 , G01N21/00 , G02B6/02395 , G02B6/4415 , G02B6/443 , G02B6/4479 , H01G11/08 , H01G11/10 , H01G11/36 , H01G11/86
摘要： The disclosed embodiments include an optical fiber having a graphene coating, a method to apply a graphene coating onto an optical fiber, and a fiber optic cable having a graphene coating. In one embodiment, the optical fiber includes an optical core that extends along a longitudinal axis. The optical fiber also includes a carbon based coating that covers the optical core along the longitudinal axis. The optical fiber also includes a layer of graphene formed on a first surface of the carbon based coating. The layer of graphene is formed from a laser induction process that includes focusing a laser beam at the carbon based coating to photothermally convert the first surface of the carbon based coating into graphene.
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