Surfactant for clean fracturing fluid, preparation method of surfactant and fracturing fluid

A surfactant and clean fracturing fluid technology, applied in the field of fracturing fluid, can solve problems such as difficulty in meeting high-displacement construction requirements, insufficient fluid supply by pump trucks, complex preparation process, etc., and achieve low surface tension, storage and transportation Convenience, enhanced oil recovery effect

Inactive Publication Date: 2019-07-12
DAQING AOPUQI CHEM ADDITIVES
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thickeners are all dry powders, and it takes 15-40 minutes to fully swell during preparation. On the premise of using efficient liquid preparation equipment, the preparation speed is low
Second, there are many types of additives; the preparation process is complicated
The third is a lot of foam; the system will generate a large amount of foam when it is prepared at high speed, and the pump truck frequently fails to pump and supply liquid, making it difficult to meet the needs of high-displacement construction

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 for clean fracturing fluid, preparation method of surfactant and fracturing fluid
  • Surfactant for clean fracturing fluid, preparation method of surfactant and fracturing fluid
  • Surfactant for clean fracturing fluid, preparation method of surfactant and fracturing fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Adopt direct method to prepare alkyl polyglycoside, concrete process is:

[0065] Add 300g of myristyl alcohol and 60g of glucose into the high-pressure reactor for reaction, then add an appropriate amount of acidic catalyst p-toluenesulfonic acid, the stirring speed of the stirrer is 200r / min, the reaction temperature is 115°C, the reaction pressure is 5Kpa, and the reaction time is 5h After the reaction is completed, it is neutralized with sodium hydroxide, then the excess alcohol is removed by vacuum distillation, and separated by filtration to obtain a colorless and transparent liquid product tetradecyl glucoside.

[0066] Physical and chemical properties of tetradecyl glucoside:

[0067] Uniform colorless transparent liquid, no smell, no discoloration, no stratification, no precipitation, good water solubility, surface tension 32m N / m.

Embodiment 2

[0069] Adopt direct method to prepare alkyl polyglycoside, concrete process is:

[0070] Add 240g 4-ethyloctanol and 60g galactose to react in the high-pressure reactor, then add an appropriate amount of acid catalyst dodecylbenzenesulfonic acid and sulfuric acid mixed catalyst, the stirring speed of the stirrer is 180r / min, and the reaction temperature is 110°C, the reaction pressure is 5Kpa, the reaction time is 3h. After the reaction is completed, it is neutralized with sodium hydroxide, then the excess alcohol is removed by vacuum distillation, and the colorless and transparent liquid product 4-ethyloctylgalactoside is obtained by filtration and separation.

[0071] Physical and chemical properties of 4-ethyloctyl galactose polyglycoside:

[0072] Light yellow transparent liquid, no smell, no discoloration, no stratification, no precipitation, good water solubility, surface tension 35m N / m.

Embodiment 3

[0074] Adopt direct method to prepare alkyl polyglycoside, concrete process is:

[0075] Add 275g of myristyl alcohol and 50g of mannose in the high-pressure reactor to react, then add an appropriate amount of acidic catalyst p-toluenesulfonic acid, the stirring speed of the stirrer is 150r / min, the reaction temperature is 120°C, the reaction pressure is 4Kpa, the reaction time After 5.5 hours, neutralize with sodium hydroxide after the reaction, then remove excess alcohol by vacuum distillation, filter and separate to obtain a light yellow transparent liquid product tetradecyl mannopolyglycoside.

[0076] Physical and chemical properties of tetradecyl mannopolyglycoside:

[0077] Colorless transparent liquid, no smell, no discoloration, no layering, no precipitation, good water solubility, surface tension 27m N / m.

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

PropertyMeasurementUnit
surface tensionaaaaaaaaaa
surface tensionaaaaaaaaaa
surface tensionaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of fracturing fluid, in particular to a surfactant for clean fracturing fluid, a preparation method of the surfactant and the fracturing fluid. The surfactant is alkyl polyglycoside, alkyl in the alkyl polyglycoside is alkyl of C8-C14, and the average degree of polymerization is 1.8-4.5. The fracturing fluid prepared from the alkyl polyglycoside can increase the recovery rate, during high-speed liquid preparation, foams are not generated, the swelling time is short, and an on-site preparation technology of the fracturing fluid is simplified; the high discharge capacity construction requirements can be met, the preparation is simple, no polymers are contained, rock sand can be effectively carried, and the flow guide capacity of the hydrocarbon reservoir is improved well.

Description

technical field [0001] The invention relates to the technical field of fracturing fluid, in particular to a surfactant for fracturing fluid, a preparation method thereof and the fracturing fluid. Background technique [0002] Fracturing fluid is the liquid used in the mining process of fluid mines (gas, gas, oil, fresh water, brine, hot water, etc.) in order to obtain high yield and borrow liquid conduction force (such as hydraulic power, etc.) for fracturing measures. [0003] The performance requirements of the fracturing fluid: high viscosity, good lubricity, small fluid loss, low friction, no blockage and damage to the fluid layer to be fractured, no pollution to the fluid mine, good thermal stability and shear stability , low residue, good compatibility, rapid gel breaking, wide supply, easy to prepare, and economical and reasonable. [0004] Alkyl polyglycosides are also called alkyl glycosides, or APG for short. They are synthesized from renewable resources, natural ...

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 & AuthorityApplications(China)
IPC IPC(8): C09K8/68C07H15/04C07H1/00G16C20/10
CPCC07H1/00C07H15/04C09K8/68
Inventor田军章继男谭洪庆刘磊
OwnerDAQING AOPUQI CHEM ADDITIVES