Cleaning agent used for high-wax crude oil volume tube, preparation method and use method

A volumetric tube and cleaning agent technology, applied in the field of cleaning agents, can solve the problems of inability to improve cleaning efficiency and cleaning degree, and achieve the effects of short cleaning time, low cleaning temperature and low concentration

Active Publication Date: 2018-02-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Following the traditional cleaning method has been unable to improve the cleaning efficiency and cleaning degree

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this embodiment, a cleaning agent for volumetric pipes of high-wax crude oil consists of the following components: 10 parts of solvent, 4 parts of co-solvent, 2 parts of surfactant, 2 parts of emulsifier and 50 parts of water.

[0030] Wherein, described solvent is the mixed solvent of toluene, xylene, 120# solvent oil and diesel oil, and wherein, the volume fraction of each component in described mixed solvent is: toluene 5 parts, xylene 10 parts, 120# solvent oil 3 parts and 10 parts of diesel oil.

[0031] Wherein, the cosolvent is a mixture of diethylene glycol butyl ether, ethylene glycol butyl ether, sherwood oil and isopropanol; the volume fraction of each component in the mixture is: 10 parts of diethylene glycol butyl ether, 5 parts of ethylene glycol butyl ether, 3 parts of petroleum ether, and 8 parts of isopropanol.

[0032] Wherein, the surfactant is mixed by petroleum sulfonate, sorbitan fatty acid ester, fatty alcohol polyoxyethylene ether and polyoxy...

Embodiment 2

[0039] The present invention is achieved through the following measures: a cleaning agent for volumetric pipes of high-wax crude oil, consisting of the following components: 20 parts of solvent, 10 parts of co-solvent, 8 parts of surfactant, 8 parts of emulsifier and 90 parts of water.

[0040] Wherein, described solvent is the mixed solvent of toluene, xylene, 120# solvent naphtha and diesel oil, wherein the volume fraction of each component in the said mixed solvent is: 8 parts of toluene, 15 parts of xylene, 5 parts of 120# solvent naphtha And diesel 12 parts.

[0041] Wherein, the cosolvent is a mixture of diethylene glycol butyl ether, ethylene glycol butyl ether, sherwood oil and isopropanol; the volume fraction of each component in the mixture is: 20 parts of diethylene glycol butyl ether, 8 parts of ethylene glycol butyl ether, 5 parts of petroleum ether, and 12 parts of isopropanol.

[0042] Wherein, the surfactant is mixed by petroleum sulfonate, sorbitan fatty aci...

Embodiment 3

[0049] The present invention is achieved through the following measures: a cleaning agent for high-wax crude oil volumetric pipes, consisting of the following components: 15 parts of solvent, 5 parts of cosolvent, 5 parts of surfactant, 6 parts of emulsifier and 80 parts of water.

[0050] Wherein, described solvent is the mixed solvent of toluene, xylene, 120# solvent naphtha and diesel oil, and wherein, the volume fraction of each component in described mixed solvent is: toluene 6 parts, xylene 12 parts, 120# solvent naphtha 4 parts and diesel 15 parts.

[0051]Wherein, the cosolvent is a mixture of diethylene glycol butyl ether, ethylene glycol butyl ether, sherwood oil and isopropanol; the volume fraction of each component in the mixture is: 15 parts of diethylene glycol butyl ether, 6 parts of ethylene glycol butyl ether, 4 parts of petroleum ether, 10 parts of isopropanol.

[0052] Wherein, the surfactant is mixed by petroleum sulfonate, sorbitan fatty acid ester, fatt...

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PUM

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Abstract

The invention provides a cleaning agent used for a high-wax crude oil volume tube, a preparation method and a use method, and belongs to the technical field of wax removal. According to the technicalscheme, the cleaning agent is prepared from, by volume, 10-20 parts of solvent, 4-10 parts of co-solvent, 2-8 parts of surface active agent, 2-8 parts of emulsifying agent and 50-90 parts of water. The invention further provides the preparation method and the use method. The cleaning agent has the advantages that the wax dissolving rate of the emulsion type cleaning agent reaches 0.4 g / min or above, the closed-cup flash point is higher than 25 DEG C, the cleaning agent contains neither organic chloride nor carbon disulfide, the wax precipitation on the volume tube can be effectively cleaned, and the cleaning agent is good in safety and stability and especially suitable for wax removal of the high-wax crude oil volume tube.

Description

technical field [0001] The invention relates to a cleaning agent, in particular to a cleaning agent for volumetric pipes of high-wax crude oil, a preparation method and a use method. Background technique [0002] At present, Sinopec currently has more than 40 sets of volumetric tube standards, and 8 sets of volumetric tubes are in use in Shengli Oilfield. It is planned to invest in the construction of 3 sets in three oil production plants, which need to be cleaned and calibrated at least once every 3 years. The cleaning effect of the current cleaning agent is not ideal, the passing rate of a test is only 50%, and the cleaning time is about 10 days. [0003] Due to the great difference in physical properties of crude oil in various oilfields in recent years, the proportion of heavy oil has increased year by year, the content of wax, colloid, and asphaltene has increased, and the salinity of produced water in oilfields has also varied greatly, resulting in waxing and scaling o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D10/02B08B9/032
CPCB08B9/0321C11D1/12C11D1/667C11D1/72C11D1/74C11D1/831C11D3/187C11D3/201C11D3/2068C11D3/3707C11D3/3773C11D3/38C11D11/0041
Inventor 王宏伟李高峰陈健飞李美蓉安波张雁
Owner CHINA PETROLEUM & CHEM CORP
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