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

Discharge adding agent for fracturing and acidizing

A technology for fracturing acidification and drainage aids, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of large oil layer thickness, many layers, leakage of working fluid, etc., and achieve good flowback, application Wide-ranging, easy-to-use effects

Inactive Publication Date: 2015-02-25
刘栋
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dagang Oilfield has thick oil layers and many layer systems, so when fracturing and acidizing the entire well section, it is easy to cause the working fluid to enter the high-permeability layer and cause leakage

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Mix 12Kg of isopropanol, 30Kg of potassium chloride, 30Kg of sodium chloride, 0.015Kg of sodium perfluoroheptanesulfonate, and 27.985Kg of erucamide propyl sulfobetaine to obtain a drainage aid for fracturing acidification. When used, dilute it with water to a concentration of 1-2%, then heat it to 45°C, and then add it to the fracturing fluid. Appearance is colorless or light yellow liquid, pH value is 5-9, density is 0.95-1.05, g / cm 3 , surface tension (0.3%) ≤ 28.5mN / m, interfacial tension ≤ 3.2mN / m, thermal stability (150°C) ≤ 2mN / m.

Embodiment 2

[0017] Mix 15Kg of isopropanol, 35Kg of potassium chloride, 35Kg of sodium chloride, 0.01Kg of sodium perfluoroheptanesulfonate, and 14.99Kg of erucamide propyl sulfobetaine to obtain a drainage aid for fracturing acidification. When used, dilute it with water to a concentration of 1-2%, then heat it to 45°C, and then add it to the fracturing fluid. Appearance is colorless or light yellow liquid, pH value is 5-9, density is 0.95-1.05, g / cm 3 , surface tension (0.3%) ≤ 28.5mN / m, interfacial tension ≤ 3.2mN / m, thermal stability (150°C) ≤ 2mN / m.

Embodiment 3

[0019] Mix 13Kg of isopropanol, 32Kg of potassium chloride, 30Kg of sodium chloride, 0.015Kg of sodium perfluoroheptanesulfonate, and 24.985Kg of erucamide propyl sulfobetaine to obtain a drainage aid for fracturing acidification. When used, dilute it with water to a concentration of 1-2%, then heat it to 45°C, and then add it to the fracturing fluid. Appearance is colorless or light yellow liquid, pH value is 5-9, density is 0.95-1.05, g / cm 3 , surface tension (0.3%) ≤ 28.5mN / m, interfacial tension ≤ 3.2mN / m, thermal stability (150°C) ≤ 2mN / 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
Densityaaaaaaaaaa
Surface tensionaaaaaaaaaa
Interfacial tensionaaaaaaaaaa
Login to View More

Abstract

The invention discloses a discharge adding agent for fracturing and acidizing, which can ensure the effective discharge of a fracturing fluid and has a water-lock prevention effect. The discharge adding agent is prepared from the following raw materials in parts by weight: 10-20 parts of isopropanol, 30-40 parts of potassium chloride, 30-40 parts of sodium chloride, 0.005-0.02 part of perfluoroheptyl sodium and 20-30 parts of erucamidopropyl sulfobetaine. When being used for fracturing and acidizing oil and gas wells, the discharge adding agent is diluted by water, and then heated to the temperature of 45 DEG C and added into a construction fluid. By using the discharge adding agent disclosed by the invention, the discharge of the working fluid of a well in operation and the protection of an oil reservoir can be realized at the same time. The discharge adding agent has the characteristic of uniform distribution of the working fluid and the effect of acid sensitivity resistance and is easy and convenient to use. The construction times can be reduced due to the adoption of the discharge adding agent, thus the discharge adding agent can be used widely.

Description

technical field [0001] The invention belongs to the technical field of oilfield chemical additives, in particular to a drainage aid for fracturing acidification and its application. Background technique [0002] Fracturing fluid is a key factor in fracturing operation. Its performance not only directly affects the success rate of hydraulic fracturing operation, but also has a great impact on the effect of oil and gas reservoir stimulation after operation. The performance of drainage aids for fracturing and acidizing plays a vital role in the performance of fracturing fluids. For heterogeneous reservoirs, whether interlayer or intralayer, the effective arrangement of fracturing fluid in the entire treatment layer plays a very critical role in the relief of damage. Dagang Oilfield has thick oil layers and many layers, so when fracturing and acidizing the whole well section, it is easy to cause the working fluid to enter the high permeability layer and cause leakage. Content...

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): C09K8/76
CPCC09K8/76
Inventor 刘栋
Owner 刘栋
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