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

Crosslinking accelerant for anhydrous hydrocarbon fracturing fluid and anhydrous hydrocarbon fracturing fluid

A technology of anhydrous fracturing fluid and cross-linking accelerator, applied in the direction of drilling compositions, chemical instruments and methods, etc., to reduce economic costs, improve viscosity and gelation performance, shear resistance and gel breaking ability Improved effect

Active Publication Date: 2018-10-23
XI'AN PETROLEUM UNIVERSITY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, domestic research and application of low-damage continuous fracturing fluid systems are still in their infancy.

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
  • Crosslinking accelerant for anhydrous hydrocarbon fracturing fluid and anhydrous hydrocarbon fracturing fluid
  • Crosslinking accelerant for anhydrous hydrocarbon fracturing fluid and anhydrous hydrocarbon fracturing fluid
  • Crosslinking accelerant for anhydrous hydrocarbon fracturing fluid and anhydrous hydrocarbon fracturing fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The cross-linking accelerator for hydrocarbon anhydrous fracturing in this embodiment contains 10 g of sodium hydroxide per 100 mL of cross-linking accelerator, 3 g of iron sulfate solution with a mass content of 20%, 45 mL of ethanol, 45 mL of ethylene glycol, and the balance It is water; mix the above substances evenly to obtain the cross-linking accelerator for hydrocarbon anhydrous fracturing fluid.

[0026] The carbon hydrocarbon anhydrous fracturing fluid prepared by the crosslinking accelerator of this embodiment includes a base fluid, a gelling agent and a crosslinking accelerator, the base fluid is diesel oil, and the volume of the gelling agent is 4% of the volume of diesel oil , the volume of the cross-linking accelerator is 2% of the volume of the diesel oil, and the gelling agent is an invention patent with the patent number ZL00100278.3 and the name "a phosphate aluminum oil-based fracturing fluid gelling agent and its preparation method" An oil-based frac...

Embodiment 2

[0028] The cross-linking accelerator for hydrocarbon anhydrous fracturing in this embodiment contains 10 g of sodium hydroxide in every 100 mL of cross-linking accelerator, 5 g of ferric sulfate solution with a mass content of 20%, 45 mL of ethanol, 45 mL of ethylene glycol, and the balance It is water; mix the above substances evenly to obtain the cross-linking accelerator for hydrocarbon anhydrous fracturing fluid.

[0029] The carbon hydrocarbon anhydrous fracturing fluid prepared by the crosslinking accelerator of this embodiment includes a base fluid, a gelling agent and a crosslinking accelerator, the base fluid is diesel oil, and the volume of the gelling agent is 4% of the volume of diesel oil , the volume of the cross-linking accelerator is 2% of the volume of the diesel oil, and the gelling agent is an invention patent with the patent number ZL00100278.3 and the name "a phosphate aluminum oil-based fracturing fluid gelling agent and its preparation method" An oil-bas...

Embodiment 3

[0031] The cross-linking accelerator for carbon hydrocarbon anhydrous fracturing of the present embodiment contains sodium hydroxide 10g in every 100mL cross-linking accelerator, and the mass content is 7.5g of ferric sulfate solution of 20%, 45mL ethanol, 45mL ethylene glycol, remaining The amount is water; mix the above substances evenly to obtain the cross-linking accelerator for hydrocarbon anhydrous fracturing fluid.

[0032] The carbon hydrocarbon anhydrous fracturing fluid prepared by the crosslinking accelerator of this embodiment includes a base fluid, a gelling agent and a crosslinking accelerator, the base fluid is diesel oil, and the volume of the gelling agent is 4% of the volume of diesel oil , the volume of the cross-linking accelerator is 2% of the volume of the diesel oil, and the gelling agent is an invention patent with the patent number ZL00100278.3 and the name "a phosphate aluminum oil-based fracturing fluid gelling agent and its preparation method" An oi...

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
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a crosslinking accelerant for anhydrous hydrocarbon fracturing fluid. Each 100 mL of the crosslinking accelerant contains 3-10 g of alkali metal hydroxides, and 0.6-1.5 g of iron sulfate, 50-90 mL of organic alcohols. The organic alcohols refer to one or any of ethyl alcohol, ethylene glycol and propylene glycol. In addition, the invention also provides anhydrous hydrocarbon fracturing fluid prepared with the crosslinking accelerant; the anhydrous hydrocarbon fracturing fluid comprises a base liquid, a gelling agent and the crosslinking accelerant; the anhydrous hydrocarbon fracturing fluid is subjected to gel breaking after gelling, a gelling accelerant and a gelling agent are added to form a fracturing fluid for secondary use. The crosslinking accelerant herein can effectively improve viscosity and gelling performance of fracturing fluids, and temperature resistance, shear resistance and gel breaking capacity are improved for fracturing fluids; after the fracturing fluids are subjected to gel breaking, the fracturing fluids are suitable for secondary use; the fracturing fluids have good temperature resistance and are good for the development and application of unconventional reservoirs.

Description

technical field [0001] The invention belongs to the technical field of oilfield chemistry and fracturing stimulation, and in particular relates to a cross-linking accelerator for anhydrous hydrocarbon fracturing fluid and anhydrous hydrocarbon fracturing fluid. Background technique [0002] At present, the demand for oil and gas is increasing day by day, while the production of conventional oil and gas is declining. Therefore, unconventional oil and gas resources such as tight sandstone gas, coalbed methane and shale gas have attracted great attention from all over the world. my country is very rich in unconventional oil and gas resources, and unconventional oil and gas reservoirs are characterized by low porosity, low permeability, poor reservoir physical properties, and usually show strong water sensitivity, while using conventional water-based fracturing fluids is very easy to It will cause water lock to the reservoir, reduce the permeability of the reservoir, and cause da...

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 Applications(China)
IPC IPC(8): C09K8/62C09K8/64
CPCC09K8/62C09K8/64
Inventor 王满学
Owner XI'AN PETROLEUM UNIVERSITY
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