Oil-soluble drag reducer

A drag reducing agent, oil-soluble technology, applied in the formulation of water-soluble drag reducing agent and its preparation, the field of oil-soluble drag reducing agent, can solve the problems of increased operating costs, large dosage of chemicals, and large safety hazards, and achieves increased The effect of crude oil production, prolonging service life and improving pump efficiency

Active Publication Date: 2009-01-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of conventionally used chemicals is large, resulting in increased operating costs
The currently used drag-reducing agents such as wax remover, viscosity reducer, and anti-wax agent have a flash point of less than 20°C, which poses a great safety hazard. Many chemical combustion accidents have occurred in field application, so technicians began to look for A non-flammable chemical agent that can meet the needs of wax removal and viscosity reduction in oil wells, eliminating potential safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The weight ratio of oil-soluble drag reducer components is:

[0041] 1. ZC-3180 crude oil pour point depressant: 2.5%;

[0042] 2. Polyacrylic acid advanced C 18 ~C 24 Mixed alcohol esters: 3.3%;

[0043] 3. Crude benzene: 37%;

[0044] 4. Polyoxyethylene tert-octylphenol ether: 1.3%;

[0045] 5. The rest is methanol, and the sum of the weight percentages of each component is 100%.

[0046] Preparation:

[0047] First, ZC-3180 crude oil pour point depressant, polyacrylic acid advanced C 18 ~C 24 Three kinds of raw materials, such as mixed alcohol ester and crude benzene, are put into the normal pressure enamel reaction kettle according to the weight ratio. Slowly raise the temperature to 65°C.

[0048] Secondly, after stirring continuously for 30 minutes, add polyoxyethylene tert-octylphenol ether by weight ratio, stir while adding, and control the temperature at 65°C, then add methanol by weight ratio, and stop heating.

[0049] Finally, stir while cooling, a...

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PUM

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Abstract

The invention provides an oil soluble drag reduction agent which is applied to the exploitation in oil field and pour-viscosity reduction. The drag reduction agent is characterized in that the agent is made of compositions with the following weight percentage of: 1.5-3.0 percent of ZC-3180 pour point depressant; 2.0-3.5 percent of polyacrylic acid advanced C18-C24 mixed alcohol ester; 30-45 percent of crude benzene; 1.0-1.5 percent of polyethylene oxide octyl phenol ether; the rest is methanol. And the sum of the percent of the compositions is 100 percent. The oil soluble drag reduction agent has the effects that the requirement of the oil well single tube gathering process that the water content of the oil soluble drag reduction agent is less than 25 percent when the added amount is 50-100mg/l is satisfied, and the back pressure of the pipeline wellhead is lowered by 20-30 percent points.

Description

technical field [0001] The invention relates to the technical field of oilfield chemistry, in particular to an oil-soluble drag reducer, a water-soluble drag reducer formula for removing wax, preventing wax and reducing viscosity in oil wells with a water content greater than 25%, and a preparation method thereof. When the dosage is 50-100mg / l, it can meet the technical requirements of single-pipe gathering and transportation, and reduce the pour point and viscosity of the oil well produced fluid. Background technique [0002] In the production process of the oil field, for the single-pipe gathering and transportation process, in order to ensure the safety of the gathering and transportation, it is necessary to regularly add agents to reduce the pour point and viscosity, such as adding wax removers, viscosity reducers, wax inhibitors and other drag reducing agents. The wax remover, viscosity reducer and wax preventer used have good wax removal and viscosity reduction effects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/52
Inventor 付亚荣田炜蔡远红吴泽美李冬青高中生梁璟陈宝新邓桃李洪江杨军代国栋李淑艳郑征
Owner PETROCHINA CO LTD
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