Modified Vegetable Oil Fluid Loss Additive
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Solution Overview
Problem
Existing fluid loss control additives in wellbore treatment operations are not environmentally friendly and do not effectively prevent fluid loss into subterranean formations, violating environmental regulations.
Innovation Solution
A biodegradable fluid loss control additive, such as chemically modified vegetable oil, forms a wax-like complex with water-soluble salts to reduce fluid loss by inhibiting the penetration of base fluid into permeable areas of the subterranean formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If synthetic fluid loss control additives are used, then fluid loss reduction is achieved, but environmental compliance deteriorates
Solution Approach 1:
The patent applies parameter changes by chemically modifying vegetable oil through sulfonation and esterification processes to alter its molecular structure and properties. These chemical modifications enable the vegetable oil to function as an effective fluid loss control additive while maintaining biodegradability and environmental compatibility, thus resolving the contradiction between effectiveness and environmental harm.
Solution Approach 2:
The patent creates a composite material system by combining chemically modified vegetable oil with water-soluble salts and other additives to form an emulsion-based fluid loss control composition. This composite approach leverages the biodegradable nature of vegetable oil while incorporating functional additives to achieve effective fluid loss reduction, thereby eliminating environmental harm associated with synthetic additives.
2Object-affected harmful factors
If conventional vegetable oil is used, then environmental friendliness is maintained, but fluid loss control effectiveness deteriorates
Solution Approach 1:
The patent applies parameter changes by subjecting vegetable oil to chemical modifications including sulfonation of hydroxyl groups and esterification with carboxylic acids. These modifications alter the chemical parameters of the vegetable oil to enhance its fluid loss control effectiveness while preserving its biodegradable and environmentally friendly characteristics.
Solution Approach 2:
The patent uses water-soluble salts as intermediaries that interact with the chemically modified vegetable oil to form complexes that enhance fluid loss control. The salts act as mediators between the modified vegetable oil and the formation permeable areas, facilitating effective barrier formation while maintaining the biodegradable nature of the vegetable oil base.
3Object-affected harmful factors
If chemically modified vegetable oil is used, then environmental compliance is improved, but additive complexity increases
Solution Approach 1:
The patent applies parameter changes through systematic chemical modifications of vegetable oil, including sulfonation and esterification. By controlling these chemical parameters and using standardized modification processes, the patent achieves environmental compliance while managing the complexity of the additive through predictable and repeatable chemical transformations.
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 additive achieves significant fluid loss reduction, with a filtrate reduction of up to 100% in laboratory tests, meeting environmental standards and replacing synthetic additives that are flagged for future substitution.
Implementation Method 1
forms a wax-like complex with water-soluble salts
Implementation Method 2
reduce fluid loss by inhibiting the penetration of base fluid into permeable areas
Data Source
AI summary
Invert emulsions can be used in oil and gas operations. A fluid loss control additive (FLCA) is a component of the fluid that can be utilized to control or minimize fluid loss into a subterranean formation. The FLCA can be a chemically modified vegetable oil that is biodegradable. Vegetable oils having some or all of the functional groups sulfonated can be used as FLCA. A water-soluble salt that has been dissolved in the discontinuous phase of the invert emulsion can combine with the FLCA to form a wax-like, solid mass.