Thermal Conductivity Probe for Real-Time Oil Content in Wellbore Solids
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Solution Overview
Problem
Current methods for determining the oil content of wellbore solids are slow and non-real-time, leading to delayed corrections and reduced efficiency in drilling operations, as they rely on processes like retorts that take over an hour to provide measurements.
Innovation Solution
The use of thermal conductivity measurements to determine the oil content of wellbore solids in real-time by comparing the thermal conductivity of the solids to a calibration curve, allowing for quick adjustments to drilling fluid and solids control equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If retort process is used to measure oil content, then measurement accuracy is achieved, but measurement time exceeds one hour causing operational delays
Solution Approach 1:
The patent replaces the mechanical retort distillation process with a thermal conductivity measurement system. The thermal conductivity probe measures oil content directly based on the thermal properties of the solid-oil mixture, eliminating the need for complex distillation equipment and lengthy heating processes, thereby reducing measurement time from over an hour to approximately 10-15 minutes while maintaining measurement accuracy.
Solution Approach 2:
The patent changes the measurement parameter from mass-based distillation (retort) to thermal conductivity-based measurement. By measuring the thermal conductivity of the recovered solids, which varies with oil content, the system provides rapid quantitative analysis without requiring phase change processes, thus resolving the time-accuracy trade-off.
2Measurement precision
If retort process is used, then oil content can be determined, but the process is slow and provides lagging measurements that reduce drilling operation efficiency
Solution Approach 1:
The patent substitutes the slow mechanical retort process with a rapid thermal conductivity measurement system. The thermal conductivity probe provides immediate feedback on oil content, enabling real-time adjustments to solids control equipment and drilling fluid formulation, thereby significantly improving drilling operation efficiency and productivity.
Solution Approach 2:
The patent implements a feedback mechanism where thermal conductivity measurements of recovered solids are continuously monitored and used to adjust solids control equipment operations and drilling fluid formulation in real-time. This closed-loop feedback system enables dynamic optimization of drilling operations, eliminating the lag associated with retort measurements.
3Productivity
If thermal conductivity measurement is used, then real-time oil content assessment is achieved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical distillation equipment with a relatively simple thermal conductivity measurement system. The probe-based system requires minimal infrastructure compared to retort apparatus, and while thermal conductivity measurement technology does add some complexity, it enables real-time data acquisition and processing that significantly improves productivity and operational efficiency.
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 immediate and accurate assessment of oil content, enhancing reactivity times and monitoring the efficacy of solids control equipment, thereby improving the efficiency of drilling operations.
Implementation Method 1
measuring a thermal conductivity of the recovered solids using a thermal conductivity probe
Data Source
AI summary
A method for the determination of the oil content for solids recovered from a wellbore is provided. The method comprises providing the solids recovered from the wellbore and measuring the thermal conductivity of the solids recovered from the wellbore using a thermal conductivity probe. The method further comprises using the thermal conductivity measurement to determine the oil content in the solids recovered from the wellbore.