Crude oil pour-point depressant

A crude oil pour point depressant, a special technology, applied in the direction of drilling compositions, pipeline systems, chemical instruments and methods, etc., can solve the problems of large investment in heating stations, large fuel consumption, single nature, etc., and achieve high safety , less toxic side effects, low cost effect

Inactive Publication Date: 2015-06-10
QINGDAO HUICHENG PETROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are also many disadvantages in the process: (1) large fuel consumption: (2) once the pipeline is shut down for some reason, it cannot continue to add heat to the crude oil, and the pipeline has the danger of "condensation pipe": (3) Large investment in heating station
Although the research on pour point depressants in Beiguo has been active in recent years, the properties are relatively single, and there are few reports on pour point depressants for crude oil with a freezing point higher than 40°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A crude oil pour point depressant, which is composed of "mixed methyl naphthalene" and ethylene glycol butyl ether.

[0023] The added ethylene glycol butyraldehyde should be able to ensure that the said pour point depressant is always liquid in an environment lower than the melting point of commercial "mixed methylnaphthalene" -5°C, without producing crystals, solids or solidification. In order to achieve the aforementioned As a goal, those of ordinary skill in the art can determine the minimum concentration of the added special organic solvent in the described pour point depressant through existing methods.

Embodiment 2

[0025] A crude oil pour point depressant, which is composed of "mixed methyl naphthalene" and diethylene glycol butyl ether.

[0026] The diethylene glycol butyl ether added should be able to ensure that the said pour point depressant is always liquid in an environment lower than the melting point of the commercial "mixed methylnaphthalene" -5°C, without producing crystals, solids or solidification. In order to achieve For the foregoing objectives, those skilled in the art can determine the minimum concentration of the added special organic solvent in the pour point depressant through existing methods.

Embodiment 3

[0028] The added diethylene glycol ether should be able to ensure that the pour point depressant is always liquid in an environment lower than the melting point of commercial "mixed methylnaphthalene" -5°C, without producing crystals, solids or solidification. In order to achieve the aforementioned goals, those of ordinary skill in the art can determine the minimum concentration of the added special organic solvent in the pour point depressant through existing methods.

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Abstract

The invention discloses a crude oil pour-point depressant, which is composed of methylnaphthalene. The methylnaphthalene is one of 1-methylnaphthalene' and mixed methylnaphthalene' or a mixture of 1-methylnaphthalene' and mixed methylnaphthalene' according to any proportion; or the methylnaphthalene is a mixture of 2-methylnaphthalene dissolved in 1-methylnaphthalene or mixed methylnaphthalene' under normal temperature and normal pressure, or a mixture of 2-methylnaphthalene dissolved in 1-methylnaphthalene or mixed methylnaphthalene' according to any proportion under normal temperature and normal pressure, and highest content of 2-methylnaphthalene in the mixture is less than saturation concentration of 2-methylnaphthalene in a solution under normal temperature and normal pressure. The crude oil pour-point depressant can greatly reduce the crude oil condensation points of different oil fields, can widely used for solving the crude oil pour point reduction problem of oil extraction, gathering and transportation, and storage and transportation phases of different oil fields, can reduce the crude oil pour point reduction cost, and has the beneficial effects of little toxic and side effect, high security, simple production, low cost, strong applicability, and easy popularization and application.

Description

technical field [0001] The invention relates to the field of crude oil chemical pour point depressant, in particular to a crude oil pour point depressant. Background technique [0002] Petroleum crude oil is a multi-component complex hydrocarbon mixture containing paraffin, and also contains a certain amount of gum and asphaltenes. Paraffin wax is easy to dissolve in crude oil, and when the temperature drops, it will precipitate from the crude oil to form wax crystals; and as the temperature drops, the wax crystals increase to form a three-dimensional network structure, which makes the crude oil lose its fluidity and hinders oil extraction and conveyor belts. Come very difficult. [0003] The wax content of our solid crude oil resources is generally high, and the titanium part belongs to paraffin-based crude oil. With the continuous increase of crude oil production and transportation, the proportion of low-wax crude oil decreased, while the proportion of high-wax crude oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/58C09K8/524
CPCC09K8/58F17D1/16
Inventor 童乐吕美玲张贵昕
Owner QINGDAO HUICHENG PETROCHEM TECH
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