A method of detecting at least one of an analyte or a condition of a fluid within a subterranean formation includes operably coupling a radiation source to at least one optical fiber coupled to a sensor having optically sensitive materials including at least one of chromophores, fluorophores, metal nanoparticles, or metal oxide nanoparticles dispersed within an optically transparent permeable matrix material. The sensor is contacted within a wellbore with a fluid and the fluid is passed through at least a portion of the sensor. Electromagnetic radiation is transmitted from the radiation source through at least one optical fiber to the sensor and at least one of an absorbance spectrum, an emission spectrum, a maximum absorption intensity, or a maximum emission intensity of electromagnetic radiation passing through the sensor after contacting at least some of the optically sensitive materials with the fluid is measured. Additional methods of determining a concentration of hydrogen sulfide in a fluid within a subterranean formation and related downhole optical sensor assemblies are disclosed.
一种检测地下地层中的分析物或流体状况中至少一种的方法包括将辐射源与至少一根光纤可操作地耦合到传感器上,该传感器具有光学敏感材料,包括分散在光学透明渗透基质材料中的发色团、荧光团、
金属纳米颗粒或金属氧化物纳米颗粒中的至少一种。传感器在井筒内与流体接触,流体至少穿过传感器的一部分。电磁辐射从辐射源通过至少一根光纤传输到传感器,测量至少部分光敏材料与流体接触后通过传感器的电磁辐射的吸收光谱、发射光谱、最大吸收强度或最大发射强度中的至少一个。此外,还公开了确定地下地层流体中
硫化氢浓度的方法以及相关的井下光学传感器组件。