Chiral Molecule Analyte Sensor for Wellbore Fluid Detection
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Solution Overview
Problem
Determining the presence, type, or quantity of analytes in wellbore fluids is challenging due to the difficulty in identifying or measuring chemical constituents, which affects well operations such as fluid purity, content analysis, and hydrocarbon production monitoring.
Innovation Solution
A system utilizing an analyte sensor with chiral molecules and optical fibers to detect changes in polarization of light as it passes through a sample chamber, allowing for the determination of analyte presence, type, or quantity based on the chiral molecule's response to the analyte, enhancing the accuracy and efficiency of fluid analysis in real-time within the wellbore.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to identify or measure analytes in wellbore fluids, then the analysis can be performed, but the measurement precision and detection capability are insufficient
Solution Approach 1:
Chiral molecules are introduced as intermediary sensing elements that specifically interact with target analytes. These chiral molecules undergo conformational changes or optical property changes when binding to analytes, converting invisible chemical interactions into detectable optical signals that can be measured with high precision
Solution Approach 2:
The system detects analyte presence by monitoring changes in optical parameters (polarization state, circular dichroism signals) of chiral molecules. When analytes bind to chiral molecules, they induce measurable changes in these optical parameters, enabling precise detection and quantification of analytes that would otherwise be difficult to detect
2Productivity
If surface-based analysis is used for wellbore fluids, then fluid analysis can be performed, but the productivity and real-time monitoring capability are reduced
Solution Approach 1:
The patent replaces complex mechanical/chemical analysis systems with an optical detection system. Light sources and optical sensors detect analyte concentrations through non-intrusive optical measurements, eliminating the need for time-consuming sample collection, transport, and laboratory analysis, thereby enabling real-time monitoring and significantly improving productivity
3Loss of information
If downhole analyte sensing is implemented, then real-time fluid composition data is obtained, but the device complexity increases
Solution Approach 1:
The optical sensing system is designed to be multi-functional, capable of detecting multiple different analytes using the same basic optical platform. By utilizing different chiral molecule variants or detection wavelengths, the system can identify various fluid components (hydrocarbons, water, additives) without requiring separate dedicated sensors for each analyte, thus reducing overall system complexity while maintaining comprehensive monitoring capability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise and efficient analysis of wellbore fluids, improving fluid collection decisions and hydrocarbon production monitoring by providing accurate data on fluid composition and purity directly from the wellbore, reducing the need for surface-based analysis.
Implementation Method 1
determining a presence, type, or quantity of an analyte in a fluid sample based on a change in a property of chiral molecules... detect changes in polarization of light as it passes through a sample chamber
Data Source
AI summary
Systems and methods are provided for determining a presence, type, or amount of an analyte in fluid. An analyte sensor can include a substrate that includes a chiral molecule for sensing the presence of the analyte in the fluid. A property of the chiral molecule may change in response to sensing the presence of the analyte. The change in the property of the chiral molecule can cause a change in polarization of a beam of light traveling through the substrate. The presence, type, or amount of the analyte can be determined based on the change in polarization of the beam of light. The analyte sensor, along with optical fibers, can be used to determine the presence, type, or amount of an analyte in a fluid sample from a wellbore.