Downhole Sampling Apparatus with Heating Projector
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Solution Overview
Problem
Current methods for sampling heavy oils and bitumens face challenges due to high viscosity, leading to contamination and alteration of the fluid's chemical and physical properties during sampling, which hinders accurate characterization.
Innovation Solution
A reservoir sampling apparatus with a heating projector that uses Joule or electromagnetic heating to reduce the viscosity of heavy oils and bitumens, while a controller maintains a temperature limit to prevent phase separation, ensuring the sampled fluid remains representative.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If heating is applied to reduce viscosity of heavy oils and bitumens, then sampling speed and cleanliness improve, but temperature control must be maintained to prevent phase separation and chemical alteration
Solution Approach 1:
The patent applies heating to change the temperature parameter of heavy oils and bitumens, which directly reduces their viscosity. This parameter change enables faster and cleaner sampling by improving fluid flow characteristics while the controller maintains temperature within safe limits to prevent adverse effects.
Solution Approach 2:
The patent incorporates a controller that monitors and regulates the heating process. This feedback mechanism ensures temperature is maintained within optimal ranges - high enough to reduce viscosity for efficient sampling but low enough to prevent phase separation and chemical alteration of the reservoir fluids.
2Speed
If heating is applied to reduce viscosity, then fluid flow improves, but risk of phase separation and chemical alteration increases
Solution Approach 1:
The patent carefully controls the temperature parameter to achieve the desired effect on fluid flow while maintaining composition stability. By optimizing the heating temperature within a specific range, the system improves fluid mobility without causing phase separation or chemical changes.
Solution Approach 2:
The controller provides continuous monitoring and adjustment of heating parameters to balance fluid flow improvement with composition preservation. The feedback mechanism detects approaching thresholds for phase separation and chemical alteration, automatically adjusting temperature to prevent these adverse effects while maintaining adequate flow rates.
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
The apparatus effectively reduces the viscosity of heavy oils and bitumens, allowing for faster and cleaner sampling with minimal contamination and chemical alteration, enabling accurate characterization of the reservoir fluids.
Implementation Method 1
A reservoir sampling apparatus with a heating projector that uses Joule or electromagnetic heating to reduce the viscosity of heavy oils and bitumens
Implementation Method 2
A reservoir sampling apparatus with a heating projector that uses Joule or electromagnetic heating to reduce the viscosity of heavy oils and bitumens
Implementation Method 3
The apparatus effectively reduces the viscosity of heavy oils and bitumens, allowing for faster and cleaner sampling
Data Source
AI summary
A reservoir sampling apparatus comprising at least one probe adapted to provide a fluid flow path between a formation and the inner of the apparatus with a heating projector adapted to project heat into the formation surrounding the probe and a controller to maintain the temperature in the formation below a threshold value.