Multi-functional surfactant complexes for deep subterranean penetration
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Solution Overview
Problem
Current surfactant treatments in subterranean formations face challenges in deep penetration and stability, leading to ineffective delivery of surfactants and additives to deep rock formations, where conventional methods struggle to reach dead-end pores and maintain stability during treatment operations.
Innovation Solution
The creation and use of multi-functional surfactant complexes (MSCs) formed by mixing oppositely charged surfactants and polymeric additives at a well site using a stop-flow mixing apparatus, which are then introduced into the formation as a treatment fluid, allowing for delayed release and enhanced interaction with the formation, including the use of a low-dose pumping apparatus to mix with an aqueous base fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional surfactant treatments are used, then the treatment process is simple, but the penetration depth and stability in deep rock formations are insufficient
Solution Approach 1:
The patent applies composite materials by combining surfactants with oppositely charged polymeric additives to form multi-functional surfactant complexes (MSCs). This composite structure enhances both penetration depth and stability in deep rock formations, resolving the technical contradiction between reaching deeper pores and maintaining treatment stability.
Solution Approach 2:
The polymeric additive acts as an intermediary between the surfactant and the rock formation. It modifies the surfactant's interaction with the formation, enabling deeper penetration while maintaining stability through the intermediary's bridging role between the surfactant molecules and the rock matrix.
2Reliability
If multi-functional surfactant complexes are formed by mixing oppositely charged surfactants and polymeric additives, then penetration depth and stability are enhanced, but the device complexity increases
Solution Approach 1:
The patent merges the surfactant and polymeric additive mixing functions into a single stop-flow mixing apparatus. This integration reduces device complexity by combining multiple functions into one unit while still achieving the enhanced stability and penetration depth through the formation of multi-functional surfactant complexes.
Solution Approach 2:
The stop-flow mixing apparatus performs preliminary mixing of the surfactant and polymeric additive solutions before they are introduced into the formation. This preliminary action ensures the complexes are formed in advance, simplifying the overall process by pre-preparing the treatment fluid rather than requiring complex in-situ mixing.
3Manufacturing precision
If low-dose pumping apparatus is used to transfer surfactant complexes, then the precision of surfactant delivery is improved, but the pumping complexity increases
Solution Approach 1:
The patent replaces complex mechanical mixing and dosing systems with a low-dose pumping apparatus that uses controlled fluid displacement. This substitution achieves precise surfactant delivery through hydraulic principles rather than complex mechanical metering, improving delivery precision while managing device complexity through fluid dynamic control.
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 MSCs enhance surfactant performance by increasing penetration depth, stability, and oil recovery, enabling treatment of deep pores and altering viscoelastic properties to improve fluid flow and contact with oil globules, thereby enhancing the effectiveness of surfactant treatments in subterranean formations.
Implementation Method 1
surfactants and polymeric additives that carry opposite charges
Implementation Method 2
low-dose pumping apparatus at the well site to transfer the one or more multi-functional surfactant complexes
Implementation Method 3
using the blending apparatus to mix the one or more multi-functional surfactant complexes with an aqueous base fluid
Implementation Method 4
mix the one or more multi-functional surfactant complexes with an aqueous base fluid to form a treatment fluid
Implementation Method 5
introducing the treatment fluid into a well bore at the well site penetrating at least a portion of a subterranean formation
Data Source
AI summary
Systems and methods for creating and/or using multi-functional surfactant complexes that may enhance surfactant treatments in subterranean formations are provided. In some embodiments, the methods comprise: providing a treatment fluid comprising an aqueous base fluid and one or more multi-functional surfactant complexes that comprise at least one surfactant and at least one polymeric additive, wherein the surfactant and the polymeric additive carry opposite charges; and introducing the treatment fluid into a well bore at a well site penetrating at least a portion of a subterranean formation.