Phenothiazine Stabilized Aqueous Polymer Compositions
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Solution Overview
Problem
Aqueous polymer compositions used in subterranean exploration degrade under high temperatures, leading to reduced rheological and chemical properties, which hinders their performance in deep, high-temperature applications.
Innovation Solution
Incorporating phenothiazine compounds or their derivatives into aqueous polymer compositions to stabilize them against thermal, chemical, and mechanical degradation, maintaining their chemical and rheological properties even under harsh conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If aqueous polymer compositions are used in high temperature subterranean applications, then productivity and exploration capability are improved, but the polymer composition degrades due to thermal, chemical and mechanical stress
Solution Approach 1:
The patent introduces phenothiazine compounds as intermediary substances that mediate between the polymer composition and the harsh high-temperature environment. These compounds act as stabilizing agents that protect the polymer from degradation without interfering with its functional performance in subterranean applications.
Solution Approach 2:
The patent modifies the chemical composition parameters of the aqueous polymer system by adding phenothiazine compounds. This changes the stabilizing properties of the composition, enabling it to maintain its rheological and chemical properties at elevated temperatures where conventional polymers would degrade.
2Reliability
If conventional stabilizing agents are used to maintain polymer properties at high temperature, then reliability is improved, but the complexity of the composition increases
Solution Approach 1:
The patent employs phenothiazine compounds that can be added in small amounts (0.01-5% by weight) to provide stabilization. These are relatively simple compounds compared to complex stabilizing systems, allowing effective stabilization with minimal addition and reduced overall composition complexity.
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 addition of phenothiazine compounds effectively stabilizes aqueous polymer compositions, ensuring they retain their properties and performance at elevated temperatures, extending their usability in high-temperature applications.
Implementation Method 1
The aqueous polymer compositions are stable at high temperatures against thermal, chemical and mechanical degradation
Implementation Method 2
stabilized against degradation... improved temperature stability... stable at high temperatures against thermal, chemical and mechanical degradation
Implementation Method 3
maintain their chemical and rheological properties even under harsh conditions... maintain the resistance to shear degradation
Data Source
AI summary
The aqueous polymer composition comprises a water soluble polymer having a molar weight of at least 104 Daltons and comprising functional groups which may form complexes with metal ions. The aqueous polymer compositions of this invention are stabilized against thermal or other degradation processes by addition of a phenothiazine compound to allow their use even under harsh conditions.