Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of emulsion type highly waxy crude oil pour point depressant and drag reducer and preparation method thereof

A crude oil pour point depressant, emulsion type technology, applied in chemical instruments and methods, mechanical equipment, gas/liquid distribution and storage, etc. wide range of effects

Active Publication Date: 2022-03-29
DONGYING SPRING PETROLEUM ENG TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the above analysis, pour point depressants are mainly used in crude oil transportation pipelines. Due to the large injection volume in oil reservoirs, the existing pour point depressants are all oil-soluble chemical agents, and the cost of injection and mixing is high. Therefore, adding pour point depressants to oil reservoirs increases There are less pour point depressants for the development effect of high waxy crude oil

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of emulsion type highly waxy crude oil pour point depressant and drag reducer and preparation method thereof
  • A kind of emulsion type highly waxy crude oil pour point depressant and drag reducer and preparation method thereof
  • A kind of emulsion type highly waxy crude oil pour point depressant and drag reducer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 oil-soluble silicone functional polymer A 1 preparation of

[0036] (1) Add 1mol methacryloxypropyltrimethylsiloxane and solvent into the three-necked flask, feed N 2 Protection, at a stirring speed of 100rpm, heat to 40°C, after constant temperature for 5min, add 1mol vinyl acetate, add initiator, adjust the reaction temperature to 100°C; after constant temperature for 120min, cool down to 20°C, and stir for 5min to obtain polymer solution;

[0037] (2) carry out vacuum distillation to above-mentioned polymer solution, remove fraction, wash 3 times with sherwood oil, after drying, obtain A 1 .

[0038] The solvent is toluene, and the dosage is 5 times the mass of methacryloxypropyl trimethylsiloxane; the initiator is azobisisobutyronitrile, and the dosage is methacryloxypropyl trimethylsiloxane. 0.5% of the mass of methyl siloxane.

[0039] Described reaction equation is as follows:

[0040]

[0041] In the formula, m=1000-2000; n=50-10000.

Embodiment 2

[0042] Embodiment 2 oil-soluble silicone functional polymer A 2 preparation of

[0043] (1) Add 1mol methacryloxypropyltrimethylsiloxane and solvent into the three-necked flask, feed N 2 Protection, at a stirring speed of 300rpm, heat to 45°C, after constant temperature for 20min, add 1.2mol vinyl acetate, add initiator, adjust the reaction temperature to 125°C; after constant temperature for 160min, cool down to 26°C, stir for 12min to obtain substance solution;

[0044] (2) Carry out vacuum distillation to above-mentioned polymer solution, remove fraction, wash 4 times with sherwood oil, after drying, obtain A 2 .

[0045]The solvent is xylene, and the amount is 8 times the mass of methacryloxypropyl trimethylsiloxane; the initiator is azobisisoheptanonitrile, and the amount is methacryloxypropyltrimethylsiloxane 1.0% by mass of trimethylsiloxane.

[0046] Described reaction equation is as follows:

[0047]

[0048] In the formula, m=3000-4000; n=4000-6000.

Embodiment 3

[0049] Embodiment 3 oil-soluble silicone functional polymer A 3 preparation of

[0050] (1) Add 1mol methacryloxypropyltrimethylsiloxane and solvent into the three-necked flask, feed N 2 Protection, at a stirring speed of 500rpm, heat to 60°C, after constant temperature for 30min, add 1.5mol vinyl acetate, add initiator, adjust the reaction temperature to 140°C; after constant temperature for 200min, cool down to 30°C, stir for 20min to obtain substance solution;

[0051] (2) carry out vacuum distillation to above-mentioned polymer solution, remove fraction, wash 5 times with sherwood oil, after drying, obtain A 3 .

[0052] The solvent is xylene, and the amount is 10 times the mass of methacryloxypropyl trimethylsiloxane; the initiator is dimethyl azobisisobutyrate, and the amount is methacryloyl 1.5% of the mass of oxypropyltrimethylsiloxane.

[0053] Described reaction equation is as follows:

[0054]

[0055] In the formula, m=4000-5000; n=8000-10000.

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a chemical additive used in the exploitation process of high waxy crude oil, in particular to an emulsion type high waxy crude oil pour point and drag reducer and a preparation method thereof. The pour point and drag reducer is compounded by oil-soluble silicone functional polymer, emulsifier, auxiliary agent and water. The composition of each component of the emulsion type highly waxy crude oil pour point and drag reducer is as follows: oil-soluble 60-80 parts of silicone functional polymer; 0.2-1.5 parts of emulsifier; 0.05-0.8 parts of auxiliary agent; 5-20 parts of water. Described oil-soluble organosilicon functional polymer is polymethacryloxypropyltrimethylsiloxane-vinyl acetate, and described emulsifier is sodium dodecylbenzenesulfonate, Tween 80 and cetyl One of the alkyl glycosides, the auxiliary agent is one of n-pentanol, ethylene glycol and isobutanol. The pour point and drag reducer of the present invention has strong adaptability and less dosage, and can depress high waxy crude oil to more than 10°C under the condition of 500ppm.

Description

technical field [0001] The invention relates to a water-soluble chemical additive used in the exploitation process of high-waxy crude oil, in particular to an emulsion-type high-waxy crude oil pour point and drag reducer and a preparation method thereof. Background technique [0002] Crude oil can be divided into paraffinic crude oil, intermediate base crude oil and naphthenic crude oil according to the classification method of characteristic factors. The crude oil produced in most oilfields in my country belongs to paraffinic base crude oil. Most of the crude oil has high wax content, and the wax content is 10-40%. , the wax content of individual crude oil exceeds 40%. In addition, crude oil also contains colloids and asphaltenes, which lead to an increase in its freezing point and poor fluidity, especially in low temperature conditions. Therefore, it is extremely important to reduce the freezing point of crude oil and improve the fluidity of crude oil. In order to improve th...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/524F17D1/17C08F230/08C08F218/08
CPCC09K8/524F17D1/17C08F230/08C08F218/08C09K2208/28
Inventor 任海宁孙春同孙永强任平平韩庆建孙方园
Owner DONGYING SPRING PETROLEUM ENG TECH