发明名称 |
Methods and apparatus for evaluating downhole conditions with RFID MEMS sensors |
摘要 |
A radio frequency Identification (RFID) tåg can include a die attached to an inductive- capacitive (LC) circuit including a capacitive element coupled to an inductive element. The LC circuit can have a resonant frequency that varies according to properties of fluid proximate the RFID tag. The RFID tag can further include a coating material disposed around the die to form an outer surface of the RFID tag. The coating material may have a thickness over a portion of the LC circuit, to permit a conductivity property of a fluid proximate the outer surface to affect the resonant frequency of the LC circuit such that the resonant frequency shifts to a second resonant frequency. Additional apparatus, systems, and methods are disclosed. |
申请公布号 |
NO20160805(A1) |
申请公布日期 |
2016.05.12 |
申请号 |
NO20160000805 |
申请日期 |
2016.05.12 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
RAVI KRISHNA M;ROBERSON MARK W;GOODWIN SCOTT;RODDY CRAIG W;BARTEE CHARLES;MCGUIRE KRISTOPHER;ROTHROCK GINGER |
分类号 |
E21B47/12;E21B47/005;G06K19/077 |
主分类号 |
E21B47/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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