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

High-efficiency drainage aid for continental shale and preparation method thereof

A drainage aid and shale technology, which is applied in the field of oil field fracturing fluid, can solve the problems that are difficult to meet the development problems of continental shale, and achieve the effects of reducing capillary resistance, reducing surface and interfacial tension, and increasing contact angle

Active Publication Date: 2022-04-29
CNPC BOHAI DRILLING ENG +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a high-efficiency drainage aid for continental shale that solves the problem that conventional drainage aids are difficult to meet the development of continental shale and its preparation method

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
  • High-efficiency drainage aid for continental shale and preparation method thereof
  • High-efficiency drainage aid for continental shale and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The feeding mass ratio is fluorocarbon surfactant, hydrocarbon surfactant and silane surfactant feeding mass ratio=2:5:8.

[0015] Among them, the fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; the silane surfactant adopts N-dimethylaminopropyl-N-triethoxysilane; the hydrocarbon surfactant adopts octadecane dihexyl betaine.

[0016] Add a certain amount of hydrocarbon surfactants, fluorocarbon surfactants and silane surfactants in proportion, and stir evenly to obtain a drainage aid.

Embodiment 2

[0018] The feeding mass ratio is fluorocarbon surfactant, hydrocarbon surfactant and silane surfactant feeding mass ratio=2:6:9.

[0019] Among them, the fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; the silane surfactant adopts N-dimethylaminopropyl-N-triethoxysilane; the hydrocarbon surfactant adopts octadecane dihexyl betaine.

[0020] Add a certain amount of hydrocarbon surfactants, fluorocarbon surfactants and silane surfactants in proportion, and stir evenly to obtain a drainage aid.

Embodiment 3

[0022] The feeding mass ratio is fluorocarbon surfactant, hydrocarbon surfactant and silane surfactant feeding mass ratio=3:7:8.

[0023] Among them, the fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; the silane surfactant adopts N-dimethylaminopropyl-N-triethoxysilane; the hydrocarbon surfactant adopts octadecane dihexyl betaine.

[0024] Add a certain amount of hydrocarbon surfactants, fluorocarbon surfactants and silane surfactants in proportion, and stir evenly to obtain a drainage aid.

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 high-efficiency drainage aid for continental shale, including fluorocarbon surfactants, hydrocarbon surfactants and silane surfactants, and the fluorocarbon surfactants, hydrocarbon surfactants and The mass ratio of silane surfactant is (2-3): (5-7): (8-10); Wherein, fluorocarbon surfactant adopts perfluorohexyl polyvinyl ether sulfonate; Silane surfactant adopts N‑Dimethylaminopropyl‑N‑Triethoxysilane; octadecyl dihexyl betaine is used as a hydrocarbon surfactant. The high-efficiency drainage aid agent for continental shale of the present invention can effectively increase the contact angle while reducing the surface interfacial tension, reduce the capillary resistance, have an amphiphobic effect, and can be used for high water saturation, poor self-absorption ability, gas adsorption Continental rock reservoirs with high content and other characteristics.

Description

technical field [0001] The invention belongs to the technical field of oilfield fracturing fluids, and in particular relates to a high-efficiency drainage aid for continental shale and a preparation method thereof. Background technique [0002] During the exploration and development of domestic continental shale, due to the characteristics of high water saturation and poor self-absorption capacity of the reservoir, it is difficult for conventional drainage aids to effectively reduce the gel-breaking fluid surface, interfacial tension and capillary pressure of continental shale fracturing. Resistance, it is difficult to meet the demand for faster and more thorough flowback of the gel breaking fluid. [0003] Therefore, based on these problems, it is of great practical significance to provide a high-efficiency drainage aid for continental shale and a preparation method thereof that solve the problem that conventional drainage aids are difficult to meet the development of conti...

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): C09K8/74C09K8/88C09K8/86
CPCC09K8/74C09K8/882C09K8/86
Inventor 李伟王红科牛增前靳剑霞张雅静赵鹏王越常青郝鹏涛徐昊垠董丙响
Owner CNPC BOHAI DRILLING ENG
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