Shaped Charge Tracer Dispersion for Wellbore Diagnostics
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Solution Overview
Problem
Existing wellbore diagnostic methods, such as fiber optic systems and chemical tracers, are costly, complex, and limited by temperature, making them unsuitable for unconventional reservoirs, while hydraulic fracturing is expensive and environmentally challenging, necessitating a low-cost, accurate, and non-intrusive diagnostic method for wellbore performance.
Innovation Solution
A shaped charge with a tracer additive, composed of inert nanoparticles, is used to disperse into the wellbore formation, allowing for rapid and accurate diagnostic analysis through fluorescence response-based methods like EDXRF, decoupled from fracturing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional diagnostic methods (fiber optic systems, chemical tracers) are used, then diagnostic capability is provided, but cost and complexity increase significantly
Solution Approach 1:
The patent uses inexpensive tracer additives that are dispersed into the formation through perforator devices. These tracers are simple, low-cost materials (such as fluorescent compounds or radioactive isotopes) that provide diagnostic information without requiring complex infrastructure. The tracers are consumed in the process, aligning with the disposable objects principle.
Solution Approach 2:
The patent extracts the diagnostic function from complex systems (fiber optic cables, continuous monitoring equipment) and implements it through simple tracer substances. By taking out the essential diagnostic capability and embedding it in minimal, dispersible tracer materials, the system achieves measurement precision without the associated complexity of traditional diagnostic systems.
2Productivity
If hydraulic fracturing is performed to stimulate production, then flow performance improves, but cost and environmental impact increase
Solution Approach 1:
The patent performs preliminary diagnostic actions by dispersing tracers into the formation before or during production. This preliminary tracing allows assessment of flow performance and formation characteristics without requiring the harmful and expensive hydraulic fracturing process. The tracers provide advance information about wellbore performance that can guide whether fracturing is truly necessary.
Solution Approach 2:
The patent creates a simplified model of production diagnostics using tracer substances that mimic the flow paths and performance characteristics of actual production without requiring the full-scale hydraulic fracturing operation. The tracers provide a copy or representation of flow behavior that can be analyzed to predict actual production performance.
3Measurement precision
If existing tracer technologies are used in high-temperature environments, then diagnostic data is obtained, but temperature limitations reduce reliability
Solution Approach 1:
The patent selects and formulates tracer additives with specific physical and chemical parameters that remain stable at high temperatures. By changing the parameters of the tracer materials (such as using temperature-stable fluorescent compounds, adjusting particle size, or selecting appropriate carriers), the system maintains measurement precision in high-temperature wellbore environments where conventional tracers would degrade or become unreliable.
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
Provides rapid, cost-effective, and accurate wellbore diagnostics, suitable for high-temperature environments, without the need for hydraulic fracturing, using inert nanoparticles that can be analyzed quickly and efficiently.
Implementation Method 1
the explosive material jet stream comes into contact with at least some of the tracer additive... detonating the at least one shaped charge so that the tracer additive via an explosive jet stream discharged from the shaped charge is carried into contact with the target formation
Implementation Method 2
testing the sample in order to analyze the remnant fluid in order to provide a set of fluid data... through fluorescence response-based methods like EDXRF
Data Source
AI summary
A shape charge for use with a perforator device in order to transfer or disperse a tracer additive into a wellbore or perforations associated therewith. The tracer additive is part of a substrate body or insert positioned in proximity to an explosive material disposed within the shape charge. The tracer additive has a first composition.