Contrast component coating for sensor analysis

A system for determining at least one property of a wellbore fluid from a first contrast agent and at least a second contrast agent, the system comprising:

• a wellbore fluid comprising at least an analyte;
• a contrast device in fluid communication with the wellbore fluid, the contrast device comprising:
• a disposable insertable structure comprising at least one crosslinked substrate;
• a support, wherein the support is adhered to at least one crosslinked substrate, wherein the support is selectively permeable to at least one analyte, and wherein the support is more resilient than the substrate;
• the first contrast agent adhered to at least one crosslinked substrate, wherein the first contrast agent is configured to respond to at least one analyte thereby altering a first measurable characteristic of the system;
• at least the second contrast agent juxtaposed in the contrast device and adhered to at least one crosslinked substrate, wherein the second contrast agent is configured to respond to at least one analyte thereby altering the first and/or a second measurable characteristic of the system, wherein sensitivity of the second contrast agent to the at least one analyte is different from that of the first contrast agent,
• wherein the first contrast agent and the second contrast agent adhered to different locations on the crosslinked substrate;
• an energy source configured to transfer energy to or through the contrast device;
• and
• a detector configured to detect or measure the first and/or the second measurable characteristic of the system.

A method of determining at least one property of a wellbore fluid from a first contrast agent and at least a second contrast agent, the method comprising:

• removably installing a contrast device within a probe path of a wellbore sensor, the contrast device comprising at least one crosslinked substrate with a support adhered thereto, wherein the contrast device comprises the first contrast agent and at least the second contrast agent juxtaposed in the contrast device, wherein a sensitivity of the first contrast agent is different than a sensitivity of the second contrast agent to one or more analytes of the wellbore fluid, the first contrast agent being configured to respond to the one or more analytes thereby altering a measurable characteristic of the contrast device, wherein the support is more resilient than the substrate, wherein the support is selectively permeable to at least one of the one or more analytes, and wherein the juxtaposition comprises at least the first and second contrast agents separately incorporated into distinct substrates;
• contacting the wellbore fluid with the contrast device such that the one or more analytes contact the first contrast agent and at least the second contrast agent;
• and
• measuring, using the wellbore sensor, the altered measurable characteristic of the contrast device.