Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Demulsification cleanup additive for fracturing and preparation method thereof

A demulsification aid and fracturing technology, which is used in the preparation of ether, the preparation of ether from alkylene oxide, chemical instruments and methods, etc. Effectively reduce surface tension and interfacial tension, and achieve the effect of improving flowback effect, easy industrial production and low production cost

Active Publication Date: 2021-03-12
DESHI ENERGY TECH GRP CO LTD +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the performance of demulsification and drainage aids for fracturing is single, which cannot effectively reduce surface tension and interfacial tension, and the effect of waste fluid flowback after fracturing is not good.

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
  • Demulsification cleanup additive for fracturing and preparation method thereof
  • Demulsification cleanup additive for fracturing and preparation method thereof
  • Demulsification cleanup additive for fracturing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 Demulsification aid drainage agent 1#

[0034] The demulsification aid drainage agent 1# for fracturing comprises the following components in percentage by weight: the alkanolamine compound shown in formula I (R 1 for C18, R 2 for C2, R 3 H, m is 1, n is 2, X is CI) 18wt%, C18 fatty acid polyoxyethylene ether sulfonate (the degree of polymerization of polyoxyethylene ether is 5) 16wt%, C12 alkyl glycoside 12wt%, isopropyl Alcohol 8wt% and 46wt% water.

[0035] The preparation method of demulsification aid drainage agent 1# for fracturing comprises the steps:

[0036] (1) Preparation of alkanolamine compounds shown in formula I:

[0037] ① Add 270.5g of stearyl alcohol and cyclohexane into a four-necked bottle, place the four-necked bottle in a constant temperature water bath and heat it up to 60°C, start adding epichlorohydrin dropwise, and continue the reaction for 1 hour after the dropwise addition; then lower When the temperature reaches 40°C, add a...

Embodiment 2

[0040] Embodiment 2 demulsification aid drainage agent 2#

[0041] The demulsification aid drainage agent 2# for fracturing comprises the following components in percentage by weight: the alkanolamine compound (R 1 for C16, R 2 for C2, R 3C2, m is 2, n is 1, X is Br) 20wt%, C12 fatty acid polyoxyethylene ether sulfonate (the degree of polymerization of polyoxyethylene ether is 10) 10wt%, C18 alkyl glycoside 15wt%, ethanol 5wt% % and 50wt% water.

[0042] The preparation method of demulsification aid drainage agent 2# for fracturing comprises the following steps:

[0043] (1) Preparation of alkanolamine compounds shown in formula I:

[0044] ① Add 242.5g of cetyl alcohol and cyclohexane into a four-necked bottle, place the four-necked bottle in a constant temperature water bath and heat it up to 55°C, start adding epichlorohydrin dropwise, and continue the reaction for 1.5h after the dropwise addition; then Lower the temperature to 35°C, add aqueous sodium hydroxide soluti...

Embodiment 3

[0047] Embodiment 3 demulsification aid drainage agent 3#

[0048] The demulsification aid drainage agent 3# for fracturing comprises the following components in percentage by weight: the alkanolamine compound (R 1 for C12, R 2 for C3, R 3 C3, m is 2, n is 1, X is Br) 10wt%, C16 fatty acid polyoxyethylene ether sulfonate (the degree of polymerization of polyoxyethylene ether is 9) 20wt%, C14 alkyl glycoside 5wt%, isopropyl Alcohol 10wt% and 55wt% water.

[0049] The preparation method of demulsification aid drainage agent 3# for fracturing comprises the steps:

[0050] (1) Preparation of alkanolamine compounds shown in formula I:

[0051] ① Add 186.4g of dodecanol and cyclohexane into a four-necked bottle, place the four-necked bottle in a constant temperature water bath and heat it up to 80°C, start adding epichlorohydrin dropwise, and continue the reaction for 1 hour after the dropwise addition; then lower When the temperature reaches 50°C, add sodium hydroxide aqueous ...

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
Login to View More

Abstract

The invention discloses a demulsification cleanup additive for fracturing and a preparation method thereof. The demulsification cleanup additive comprises the following components in parts by weight:1-30 parts of alkanolamine compounds, 1-30 parts of fatty acid polyoxyethylene ether sulfonate, 1-20 parts of alkyl glycoside and 1-15 parts of low-molecular alcohol. The alkanolamine compound is selected from at least one of compounds with a structural formula as shown in a formula I which is described in the specification. The alkanolamine compound not only has demulsifying and cleanup assistingeffects, but also can effectively fuse and enhance the fatty acid polyoxyethylene ether sulfonate, alkyl glycoside and low-molecular alcohol, so that the demulsifying cleanup additive has lower surface tension and interfacial tension and higher demulsifying rate and cleanup assisting rate, the demulsifying cleanup additive is used for fracturing treatment of oil field reservoirs, capillary resistance and resistance generated by emulsion blockage can be effectively reduced, the flowback rate of waste liquid after fracturing is effectively increased, and the fracturing treatment effect is improved.

Description

technical field [0001] The application relates to a demulsification and drainage aid for fracturing and a preparation method thereof, belonging to the technical field of oilfield chemicals. Background technique [0002] Oilfield fracturing is the main process for developing new oilfields and increasing production of old oilfields. Among them, fracturing fluid is a key factor in fracturing construction. Its performance not only directly affects the success rate of hydraulic fracturing construction, but also has a great impact on the effect of oil and gas layer reconstruction after fracturing. [0003] The fracturing fluid is a kind of water-containing fluid. When the fracturing fluid invades the pores of oil and gas layers, due to the existence of the oil-water interface in the tiny pores, a meniscus concave to the oil phase will be formed, thereby generating capillary resistance; at the same time, the oil-water two When the phase flows in the formation, a large number of em...

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
IPC IPC(8): C09K8/68C09K8/88C07C213/04C07C213/08C07C217/28C07C41/03C07C43/13
CPCC09K8/68C09K8/885C07C213/04C07C213/08C07C41/03C07C43/137C07C217/28
Inventor 崔仕章宋新旺侯云福崔学章王黎明郭鑫刘小芳郑志微
Owner DESHI ENERGY TECH GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com