Preparation of novel environment-friendly efficient gas hydrate inhibitor and application thereof

A gas hydrate and inhibitor technology, which is applied in drilling composition, gas/liquid distribution and storage, mechanical equipment, etc., to achieve the effects of inhibiting nucleation, low toxicity, and good adsorption performance

Active Publication Date: 2020-04-24
郑州洁灵科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is greatly affected by the subcooling degree of the system, and the subcooling degree is generally less than 10°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]The preparation of the new environment-friendly and high-efficiency gas hydrate inhibitor of this embodiment, the novel environment-friendly and high-efficiency gas hydrate inhibitor contains 2-vinylpyridine-N-vinyl-2-pyrrolidone copolymer with a mass concentration of 0.6%, A nonionic surfactant with a mass concentration of 1.8%, glycol ethers with a mass concentration of 4.1%, water-soluble monomers with a mass concentration of 2.4%, and the rest are deionized water;

[0037] And the preparation of the above-mentioned novel environment-friendly and high-efficiency gas hydrate inhibitor includes the following steps:

[0038] (a) Oil phase preparation: Add 2-vinylpyridine-N-vinyl-2-pyrrolidone copolymer and nonionic surfactant to glycol ethers respectively, and stir at room temperature at a speed of 900r / min 30min, to obtain the oil phase;

[0039] (b) Preparation of water phase: Add water-soluble monomers into deionized water, stir evenly to make a solution, and obtain ...

Embodiment 2

[0049] The preparation of the new environment-friendly and high-efficiency gas hydrate inhibitor of this embodiment, the novel environment-friendly and high-efficiency gas hydrate inhibitor contains 2-vinylpyridine-N-vinyl-2-pyrrolidone copolymer with a mass concentration of 1.0%, A nonionic surfactant with a mass concentration of 3.4%, glycol ethers with a mass concentration of 5.8%, water-soluble monomers with a mass concentration of 4.2%, and the rest are deionized water;

[0050] And the preparation of the above-mentioned novel environment-friendly and high-efficiency gas hydrate inhibitor includes the following steps:

[0051] (a) Oil phase preparation: Add 2-vinylpyridine-N-vinyl-2-pyrrolidone copolymer and nonionic surfactant to glycol ethers respectively, and stir at room temperature at a speed of 1300r / min 50min, to obtain the oil phase;

[0052] (b) Preparation of water phase: Add water-soluble monomers into deionized water, stir evenly to make a solution, and obtai...

Embodiment 3

[0062] The preparation of the new environment-friendly and high-efficiency gas hydrate inhibitor of this embodiment, the novel environment-friendly and high-efficiency gas hydrate inhibitor contains 2-vinylpyridine-N-vinyl-2-pyrrolidone copolymer with a mass concentration of 0.8%, A nonionic surfactant with a mass concentration of 2.6%, glycol ethers with a mass concentration of 4.9%, water-soluble monomers with a mass concentration of 3.3%, and the rest are deionized water;

[0063] And the preparation of the above-mentioned novel environment-friendly and high-efficiency gas hydrate inhibitor includes the following steps:

[0064] (a) Oil phase preparation: Add 2-vinylpyridine-N-vinyl-2-pyrrolidone copolymer and nonionic surfactant to glycol ethers respectively, and stir at room temperature at a speed of 1100r / min 40min, to obtain the oil phase;

[0065] (b) Preparation of water phase: Add water-soluble monomers into deionized water, stir evenly to make a solution, and obtai...

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Abstract

The invention relates to the technical field of oil and gas production, in particular to preparation of a novel environment-friendly efficient gas hydrate inhibitor and an application thereof. The novel environment-friendly efficient gas hydrate inhibitor is prepared from a 2-vinylpyridine-N-vinyl-2-pyrrolidone copolymer with the mass concentration of 0.6 percent to 1.0 percent, a nonionic surfactant with the mass concentration of 1.8% to 3.4%, glycol ethers with the mass concentration of 4.1% to 5.8%, a water-soluble monomer with the mass concentration of 2.4% to 4.2% and the balance deionized water. The preparation method of the inhibitor comprises the following steps: oil phase preparation, water phase preparation, mixed reaction and the like. The inhibitor prepared by the invention hasa good inhibition effect, can effectively inhibit hydrate nucleation, enables the generated hydrate to be in a uniform and stable slurry state, disenables a hydrate aggregation phenomenon, has the advantages of low toxicity, no volatilization, easy degradation, environmental friendliness and the like, and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of oil and gas production, in particular to the preparation and application of a novel environmentally friendly and efficient gas hydrate inhibitor. Background technique [0002] Gas hydrate is a special cage compound, which is a non-chemical compound formed by water (host molecule) and small molecules (guest molecules) such as methane, ethane, propane, propylene, nitrogen, and carbon dioxide at a certain temperature and pressure. Quantitative cage-type solid crystalline substances, also known as cage-type hydrates. The gas hydrates that have been discovered and studied now mainly have three crystal structures, namely type I, type II and type H. In the following decades, many scholars have conducted research on natural gas hydrate, and the developed gas hydrate application technology also involves many fields such as water resources, environmental protection, climate, oil and gas storage and transportation,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/52F17D1/17
CPCC09K8/52F17D1/17C09K2208/22
Inventor 张星杰
Owner 郑州洁灵科技有限公司
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