Viscosifier Polymer and Polyamine Modifier for Subterranean Treatment
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Solution Overview
Problem
Conventional viscosifiers used in petroleum extraction face challenges such as reduced effectiveness at high temperatures and in the presence of ions, leading to increased costs and formation damage due to clay usage.
Innovation Solution
A composition comprising a viscosifier polymer with ethylene repeating units and a polyamine viscosity modifier, which provides stable viscosity and fluid loss control without relying on clay, maintaining effectiveness under high temperature and high salinity conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional viscosifiers are used to achieve desired viscosity, then viscosity can be increased, but effectiveness is reduced at high temperatures and in the presence of ions
Solution Approach 1:
The patent uses a composite system combining two different viscosifiers with distinct mechanisms: one viscosifier provides baseline viscosity while the other maintains viscosity stability at high temperatures and in the presence of ions. This composite approach allows the formulation to achieve desired viscosity without sacrificing temperature resistance or ion tolerance.
2Stability of the object's composition
If larger amounts of viscosifiers are used to compensate for high temperatures, then viscosity can be maintained, but costs increase
Solution Approach 1:
The patent changes the chemical parameters of the viscosifier system by selecting specific viscosifier types and combinations that inherently resist temperature degradation. This allows maintaining effective viscosity at high temperatures without increasing the total quantity of viscosifiers, thereby reducing material costs while preserving performance.
3Stability of the object's composition
If clay is used with viscosifiers to achieve desired viscosity or fluid loss control, then viscosity and fluid loss control can be improved, but formation damage occurs due to pore plugging and difficulty of clean-up
Solution Approach 1:
The patent extracts or removes clay from the formulation system entirely, replacing its viscosity and fluid loss control functions with alternative viscosifiers and additives. This eliminates the harmful pore-plugging effect of clay while maintaining the desired fluid loss control through non-clay based mechanisms.
4Stability of the object's composition
If expensive temperature-resistant viscosifiers are used, then viscosity stability at high temperatures is improved, but cost increases
Solution Approach 1:
The patent merges the functions of multiple viscosifiers into a single cost-effective system. By combining viscosifiers with different mechanisms of action, the formulation achieves temperature-resistant viscosity stability without requiring expensive specialized viscosifiers, thereby reducing overall material costs while maintaining performance.
Data Source
AI summary
Various embodiments disclosed relate to compositions including a viscosifier polymer and a polyamine viscosity modifier and methods of using the same for treatment of subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation. The method includes placing in a subterranean formation a composition including a viscosifier polymer and a polyamine viscosity modifier.