Catalyst Tape Spectrometer for Drilling Fluid Hydrocarbon Detection
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Solution Overview
Problem
There is a need for systems and methods to spectrometrically analyze drilling and formation fluids during oil and gas exploration and drilling operations to identify the presence, type, and amount of formation fluids leached into drilling mud as it is circulated through a borehole, which has not been adequately addressed by existing technologies.
Innovation Solution
A spectrometric analysis system comprising a catalyst tape that undergoes Friedel-Crafts Reactions with drilling fluid samples, producing chromophoric signals detectable by a spectrometer, which compares downhole and uphole signals using a multivariate analysis algorithm to determine hydrocarbon content differences, synchronized with the recirculation travel time of drilling fluids through the drill string and borehole.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If FCR spectrometric analysis kits are used to analyze drilling and formation fluids, then hydrocarbon detection capability is improved, but the system complexity and integration into drilling operations remains insufficient
Solution Approach 1:
The patent combines multiple functions (sampling, mixing, reaction, and spectrometric detection) into an integrated platform device that can be directly coupled to drilling equipment. The device merges the catalyst tape system with mixing chambers and spectrometer detection, creating a unified system that eliminates the need for separate analysis kits and simplifies integration into drilling operations.
Solution Approach 2:
The platform device is designed to perform multiple functions: it can analyze both drilling fluid and formation fluid, handle different sampling scenarios (continuous or discrete), and provide real-time spectrometric data. The catalyst tape system can be reused by rolling it onto the drum multiple times, making the device universally applicable for various hydrocarbon analysis needs in drilling operations.
2Productivity
If continuous monitoring of drilling fluid is implemented, then real-time hydrocarbon identification is improved, but the time synchronization with recirculation travel time becomes challenging
Solution Approach 1:
The system pre-determines the recirculation travel time based on known drilling parameters (drill string length, flow rate, borehole depth) before actual monitoring begins. This preliminary calculation allows the system to properly synchronize the catalyst tape movement with the expected arrival time of drilling fluid containing formation fluids, ensuring accurate real-time analysis without time synchronization errors.
Solution Approach 2:
The system uses feedback from the spectrometer detection to monitor the chromophoric signal over time, comparing it against the expected recirculation timeline. This feedback mechanism allows the system to adjust and maintain proper synchronization between the catalyst tape movement and the actual fluid recirculation, ensuring continuous accurate monitoring.
3Duration of action of moving object
If catalyst tape is reused multiple times, then operational duration is improved, but contamination risk from previous reactions increases
Solution Approach 1:
The system extracts and isolates the catalyst onto a removable tape that can be individually processed. After each use cycle, the catalyst tape can be removed from the drum, allowing the mixing chamber and other components to be cleaned and prepared for the next sample without cross-contamination. The tape itself can be discarded or regenerated separately, preventing contamination of the main system components.
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 accurate identification and quantification of hydrocarbons in drilling fluids, allowing for informed decision-making in oil and gas exploration and production operations by determining the source and amount of hydrocarbons entering the drilling fluid through spectrometric analysis.
Implementation Method 1
catalyst configured to produce Friedel-Crafts reactions in response to contacting an extract solution disposed in the downhole and uphole mixing chambers
Implementation Method 2
optical device configured to produce a chromophoric signal by contacting the catalyst tape with an electromagnetic signal
Data Source
AI summary
A spectrometric analysis system for use with a drilling and production system including a first inlet configured to receive an aliquot of downhole drilling fluid, a downhole mixing chamber in fluid communication with the first inlet and a reservoir configured to provide an aliquot of solvent, a second inlet configured to receive an aliquot of uphole drilling fluid, an uphole mixing chamber in fluid communication with the second inlet, a catalyst tape configured to be displaced in the downhole and uphole mixing chambers, an optical device configured to produce a chromophoric signal by contacting the catalyst tape with an electromagnetic signal, and a spectrometer for detecting the chromophoric signal produced by the optical device.