Dry Chemical Wash Composition for Drilling Fluid Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current chemical wash compositions for removing drilling fluids from well bores are expensive to transport due to their liquid form and have a low ignition point, making them prone to catching fire if dried.
Innovation Solution
A dry chemical wash composition comprising sulfonated lignin and taurate, which can be easily transported and rehydrated at the well site, effectively removing drilling fluids and filter cakes from well bore surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical wash composition is transported in liquid form, then it can be used effectively to remove drilling fluids, but it becomes expensive to transport and has a low ignition point making it prone to catching fire
Solution Approach 1:
The patent changes the physical state parameter of the chemical wash composition from liquid to dry form. The dry composition comprises sulfonated lignin and taurate in a predetermined ratio, which can be safely transported and only converted to liquid form at the well site through rehydration, thereby eliminating fire hazards and reducing transportation costs while maintaining effectiveness
Solution Approach 2:
The chemical wash composition is prepared in dry form before transportation and storage. The dry form is rehydrated at the well site just before use, allowing the composition to be transported safely in a stable dry state and only converted to the active liquid form when needed, preventing premature fire hazards
2Object-affected harmful factors
If dry chemical wash composition is used, then transportation cost is reduced and fire hazard is eliminated, but it must be rehydrated at the well site which adds a step
Solution Approach 1:
The patent employs a dry chemical wash composition that requires rehydration at the well site. The dry form contains sulfonated lignin and taurate in a predetermined ratio, and rehydration simply involves adding water to convert it to the active liquid form, which is a straightforward process that does not significantly increase operational complexity
3Productivity
If chemical wash is used to remove drilling fluid, then it prepares the well bore for cementing operations, but the composition must be compatible with both drilling fluid and cement composition
Solution Approach 1:
The patent formulates the chemical wash composition with specific local qualities - the sulfonated lignin provides surfactant properties for emulsifying and removing drilling fluid, while the taurate component contributes to compatibility with cement compositions. This tailored chemical composition enables effective removal of drilling fluid while maintaining compatibility with subsequent cementing operations
Solution Approach 2:
The chemical wash composition is a composite material combining sulfonated lignin and taurate in a predetermined ratio. This composite formulation leverages the complementary properties of both components to achieve both drilling fluid removal and cementing compatibility, creating a versatile composition that handles multiple requirements simultaneously
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 dry composition is cost-effective for transportation and efficient in removing drilling fluids and filter cakes, enhancing well bore preparation for cementing operations by ensuring effective mud removal and zonal isolation.
Implementation Method 1
chemical wash compositions that comprise water, a sulfonated lignin, and a taurate
Data Source
AI summary
Chemical wash compositions comprising a sulfonated lignin and a taurate are provided. In one embodiment, a chemical wash composition is provided comprising water, a sulfonated lignin, and a taurate.