Optical Computing Device for Cement Additive Composition Analysis
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Solution Overview
Problem
The composition of cement additives can change over time due to storage and shipping conditions, leading to cement slurries that are out of specification, resulting in costly and time-consuming remedial operations, particularly in the oil and gas industry where set cement properties are critical for wellbore stability and integrity.
Innovation Solution
The use of optical computing devices for rapid analysis of cement additives, allowing for real-time or near real-time detection of composition, concentration, and presence of contaminants, enabling adjustments to cement slurry formulations to maintain desired properties and prevent premature or delayed setting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If composition analysis of cement additives is performed only after production, then manufacturing cost is reduced, but the reliability of cement slurry formulation deteriorates due to compositional changes during storage and shipping
Solution Approach 1:
The patent implements composition analysis of cement additives at multiple stages before the cement slurry is actually used - specifically during storage and shipping - to detect compositional changes in advance. This preliminary detection allows for proactive adjustments to the cement slurry formulation before the additive is incorporated, preventing formulation failures and avoiding costly remedial operations later.
2Reliability
If multiple composition analyses are performed during storage and shipping, then the reliability of cement slurry formulation is improved, but the complexity of the analysis system increases
Solution Approach 1:
The patent employs a portable optical computing device that serves multiple functions: it can analyze different types of cement additives (set retarders, set accelerators, fillers), perform multiple types of composition analysis, and operate in various locations (storage facilities, shipping containers, well sites). This multi-functional approach consolidates what would otherwise require multiple separate analysis systems into a single versatile device, reducing overall system complexity while maintaining comprehensive monitoring capability.
3Productivity
If rapid analysis of cement additives is implemented, then productivity of cementing operations is improved, but the cost of analysis equipment increases
Solution Approach 1:
The patent replaces traditional mechanical/chemical analysis methods (such as wet chemistry analysis, chromatography, or spectroscopy requiring large sample preparation facilities) with an optical computing device that uses light-based detection. This substitution enables rapid, on-site analysis without requiring complex mechanical analysis infrastructure, achieving both fast turnaround and cost-effectiveness by leveraging optical detection principles that can be implemented in portable form factors.
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
This approach ensures the production of high-quality set cements by quickly identifying changes in cement additive compositions, reducing nonproductive time and costly remedial operations, thereby enhancing the efficiency and efficacy of cementing operations in the oil and gas sector.
Implementation Method 1
optical computing devices for rapid analysis of cement additives, allowing for real-time or near real-time detection of composition, concentration, and presence of contaminants
Data Source
AI summary
Optical analysis systems and methods may be used for analyzing the characteristics, including compositions, of cement additives, which may be used in formulating a cement slurry. For example, a cement additive may be optically interacting with an integrated computational element (“ICE”) configured to detect a characteristic of the cement additive. An output signal may then be generated corresponding to the characteristic of the cement additive detected by the ICE, which may be received and processed with a signal processor to yield a value for the characteristic of the cement additive. The value of the characteristic of the cement additive may then be used to determine an amount of the cement additive for use in producing a cement slurry.