| 发明名称 | Chemiresistive sensors for downhole tools | ||
| 摘要 | A method of detecting an analyte includes vaporizing at least a portion of a fluid within a wellbore, passing the vaporized fluid adjacent a chemiresistive sensing element coupled to a drill string within the wellbore and sensing a resistivity of the chemiresistive sensing element. A sensor for detecting an analyte includes an expansion device for vaporizing a portion of a fluid within a wellbore, a chemiresistive sensing element configured to contact the vaporized fluid within the wellbore and a controller configured to pass a current through the chemiresistive sensing element and calculate a resistance of the chemiresistive sensing element in contact with the gaseous portion of the fluid. An earth-boring tool may include a bit body coupled to a drill string and the sensor. | ||
| 申请公布号 | US9562430(B1) | 申请公布日期 | 2017.02.07 |
| 申请号 | US201514874578 | 申请日期 | 2015.10.05 |
| 申请人 | Baker Hughes Incorporated | 发明人 | Monteiro Othon R. |
| 分类号 | E21B49/08;G01N27/04;G01N33/24;E21B49/00;G01N27/12;E21B10/00;E21B21/00;G01N33/28;G01N1/22;E02D1/00;G01N33/00 | 主分类号 | E21B49/08 |
| 代理机构 | TraskBritt | 代理人 | TraskBritt |
| 主权项 | 1. A method of detecting an analyte, comprising: vaporizing at least a portion of a fluid within a wellbore; passing the vaporized fluid adjacent a chemiresistive sensing element coupled to a drill string within the wellbore, the chemiresistive sensing element configured such that a resistivity of the chemiresistive sensing element changes in response to a presence of an analyte in proximity to the chemiresistive sensing element; and sensing the resistivity of the chemiresistive sensing element. | ||
| 地址 | Houston TX US | ||