Non-Halide Anti-Agglomerate Inhibitors for Corrosion-Free Hydrate Management
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Solution Overview
Problem
Traditional anti-agglomerate low dosage gas hydrate inhibitors (LDHIs) contain residual halides that cause corrosion, stress corrosion cracking, and toxicity, making them unsuitable for environmentally sensitive operations and prone to degradation at high temperatures.
Innovation Solution
Compositions of reaction products of organic acids and organic amines are developed, eliminating residual halides and providing a non-corrosive, less toxic alternative that can be used continuously, with improved stability at high temperatures and reduced toxicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional anti-agglomerate LDHIs containing halides are used, then gas hydrate formation is inhibited, but corrosion and stress corrosion cracking occur in metal piping and equipment
Solution Approach 1:
The patent removes harmful halide components (chlorine, bromine, iodine) from the anti-agglomerate LDHI composition while retaining the effective anti-agglomerate active matter. This extraction of the harmful substance resolves the contradiction by eliminating corrosion and stress corrosion cracking risks while maintaining hydrate inhibition effectiveness through alternative safe化学成分.
Solution Approach 2:
The patent changes the chemical composition parameters of the LDHI by specifying that it must not contain halides above certain threshold levels (e.g., total halides less than 1000 ppm, preferably less than 500 ppm). This parameter change transforms the composition from harmful to safe, resolving the contradiction between effectiveness and harmful effects.
2Reliability
If traditional anti-agglomerate LDHIs with residual halides are used, then gas hydrate formation is inhibited, but toxicity and environmental harm increase
Solution Approach 1:
The patent extracts and eliminates toxic halide substances from the LDHI composition. By removing halides above threshold levels, the patent reduces toxicity and environmental harm while maintaining the anti-agglomerate functionality through alternative safe化学成分, thus resolving the contradiction between effectiveness and environmental safety.
3Reliability
If traditional anti-agglomerate LDHIs are used, then gas hydrate formation is inhibited, but the inhibitors break down and become less effective at high temperatures above 250°F
Solution Approach 1:
The patent changes the thermal stability parameter of the LDHI by selecting化学成分 that remain stable at high temperatures above 250°F. The specified safe化学成分 (excluding traditional halide-based compounds) are chosen for their thermal stability, allowing the inhibitor to maintain effectiveness in high-temperature applications without breaking down.
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 new compositions effectively inhibit gas hydrate formation without causing corrosion or stress cracking, are environmentally friendly, and maintain efficacy at temperatures above 250°F, offering a safer and more effective solution for hydrate management in petroleum and natural gas production.
Implementation Method 1
Compositions are described which are anti-agglomerate low dosage hydrate inhibitors that are made without the use of organic chlorides or halides... These new AA-LDHI's are reaction products of organic acids and organic amines that eliminate or substantially reduce residual inorganic or organic halides
Implementation Method 2
Anti-agglomerate gas inhibitors are typically more cost effective than thermodynamic inhibitors... Anti-agglomerate LDHI's prevent gas hydrate crystals from agglomerating and forming plugs
Data Source
AI summary
A method of inhibiting gas hydrate formation in petroleum and natural gas production systems through the use of low dosage hydrate inhibitors which include reaction products of non-halide-containing inorganic acids, organic acids, and organic amines. The use of these non-halide-containing reaction products rather than chloride containing acids or alkylating agents avoids corrosion and stress cracking caused by residual inorganic chloride and other inorganic, halide-containing acids. The anti-agglomerate compositions can be administered continuously to effectively inhibit gas hydrate formation. In preferred embodiments, the anti-agglomerate compositions are mixtures of reaction products of non-halide-containing organic acids and organic amines.