Polysaccharide hydrate dynamics inhibitor and application thereof

A kinetic inhibitor, hydrate technology, applied in drilling compositions, chemical instruments and methods, etc., can solve problems such as poor thermal and salt stability, and achieve the effects of stable performance, low production cost and good versatility
CN107522792AInactive Publication Date: 2017-12-29SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2017-12-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a polysaccharide hydrate dynamics inhibitor and application thereof. The polysaccharide hydrate dynamics inhibitor is characterized in that the hydrogen of a mannose molecule on a galactomannan main chain is substituted by hydroxypropyl trimethylammonium chloride; the mass by using hydrate to generate raw water is used as the basis, and the concentration of the inhibitor is 0.2wt% to 3.5wt%. The polysaccharide hydrate dynamics inhibitor has the characteristics that the green and environment-friendly effects are realized, the usage amount is small, and the acid-resistant, salt-resistant, and heat-resistant properties are strong; the requirement of inhibiting the hydrate under multiple extreme conditions can be met, the preventing and control cost of the hydrate is greatly reduced, and the adverse effect to environment is decreased.
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Description

technical field

[0001] The invention relates to the technical field of oil and gas hydrates, in particular to a polysaccharide hydrate inhibitor. Background technique

[0002] In the pipelines of natural gas and petroleum fluids, various low-boiling hydrocarbons such as methane, ethane, propane, carbon dioxide, and hydrogen sulfide react with water under certain temperature and pressure conditions to form a non-stoichiometric cage-type solid substance. Also known as clathrate hydrate crystals. In the oil and gas industry, the formation of gas hydrates will lead to the blockage of oil and gas transportation pipelines, and even the bursting of pipelines, which will bring many safety hazards and huge economic losses to the exploitation and transportation of oil and natural gas. In addition, for offshore oil and gas field development and deep-sea pipeline transportation, the problem of hydrates is also particularly prominent, because the temperature and pressure conditions on t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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