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

Surfactant, clean fracturing fluid and preparation method thereof

A technology for cleaning fracturing fluids and surfactants, applied in chemical instruments and methods, organic chemistry, dissolution, etc. There are not many problems such as application to achieve the effect of overcoming damage, low cost and good compatibility

Active Publication Date: 2016-06-22
CHINA NAT OFFSHORE OIL CORP +2
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem of poor temperature resistance of clean fracturing fluids has always limited its scope of application
There are many domestic researches on medium and low temperature levels, and although there are research reports on high-temperature-resistant clean fracturing fluids (without exceeding 120°C), there are not many successful applications
Although there are examples of high temperature applications in foreign countries, the maximum applicable temperature is 135°C, and there is no application exceeding 140°C

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
  • Surfactant, clean fracturing fluid and preparation method thereof
  • Surfactant, clean fracturing fluid and preparation method thereof
  • Surfactant, clean fracturing fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation method of clean fracturing fluid of the present invention comprises the following steps:

[0030] Mixing 87.10-93.25 parts by weight of water, 0.15-0.40 parts by weight of activator and 5.60-10.50 parts by weight of surfactant to prepare a base liquid;

[0031] 1.00-2.00 parts by weight of counter ions are added to the base fluid and mixed to obtain a clean fracturing fluid.

[0032] Among them, in the preparation of the base liquid, first add water to a beaker with a magnetic stirrer, start the stirrer and stir at a speed of 500rpm, then add an activator and a surfactant in turn at room temperature, and wait until the swelling is complete. Get the base fluid. Then add the counter ions into the beaker and mix with the base fluid to obtain a clean fracturing fluid.

Embodiment 1

[0037] Use a graduated cylinder to measure 87.1ml of water and pour it into a beaker with a magnetic stirrer, start the stirrer and stir at a speed of about 500rpm, then add 0.40g of activator and 10.50g of surfactant in sequence at room temperature, and wait for the swelling After completion (about 30 minutes), 2.00 g of counter ions were added to the beaker, and the reaction was continued until the prepared fracturing fluid had good viscoelasticity.

Embodiment 2

[0039]Use a measuring cylinder to measure 92.3ml of water and pour it into a beaker with a magnetic stirrer, start the stirrer and stir at a speed of about 500rpm, then add 0.2g of activator and 6g of surfactant in sequence at room temperature, and wait until the swelling is complete Afterwards (about 30 minutes), 1.5 g of counter ions were added to the beaker, and the reaction was continued until the prepared fracturing fluid had good viscoelasticity.

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 discloses a surfactant, a clean fracturing fluid and a preparation method thereof. The surfactant is brominated 1-methyl-4-alkylimidazole, its molecular formula is C26H59N2Br, and its structural formula is: the clean fracturing fluid comprises the following Raw materials in parts by weight: 5.60-10.50 parts of surfactant, 0.15-0.40 parts of activator, 1.00-2.00 parts of counterion, and 87.10-93.25 parts of water. The surfactant of the present invention has simple preparation method, mild reaction conditions, and high reaction yield; the clean fracturing fluid of the present invention is made by the above-mentioned surfactant, activator, counterion and water in certain parts by weight, and the cost is low. Low cost, easy to make, good high temperature resistance, can reach 140 ℃, suitable for water in different regions; and the clean fracturing fluid has good compatibility with formation water, which can overcome and reduce the damage caused by secondary precipitation.

Description

technical field [0001] The invention relates to a cleaning fracturing fluid, in particular to a surfactant which can be used for cleaning the fracturing fluid, the cleaning fracturing fluid and a preparation method thereof. Background technique [0002] Clean fracturing fluid is well known for its series of excellent properties, and domestic oil fields have done a lot of basic research work in this area, and also achieved good field application results. However, the problem of poor temperature resistance of clean fracturing fluids has always limited its scope of application. There are many domestic studies on medium and low temperature levels, and although there are research reports on high-temperature-resistant clean fracturing fluids (not exceeding 120°C), there are not many successful applications. Although there are examples of high temperature applications in foreign countries, the maximum applicable temperature is 135°C, and there is no application exceeding 140°C. ...

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): B01F17/32C07D233/58C09K8/68C09K23/32
Inventor 韦红术张俊斌张伟国魏裕森王杏尊郭布民鲍文辉黄杰
Owner CHINA NAT OFFSHORE OIL CORP