Preparation process of clean fracturing fluid with remarkably increased viscosity number of system

A technology for clean fracturing fluid and preparation process, applied in the field of clean fracturing fluid preparation technology, can solve problems such as damage to conductivity, decrease in viscosity, loss of effective suspension effect of proppant, etc. Effect

Inactive Publication Date: 2013-03-27
刘高昌
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Domestic research on clean fracturing fluids is relatively late. At present, CTAB and Schlumberger’s J508 surfactant are the main VESs used. The problem is that the viscoelastic effect of CTAB is relatively weak, especially when the temperature is higher than 60 °C, the viscous It will be greatly reduced and lose the ef

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
  • Preparation process of clean fracturing fluid with remarkably increased viscosity number of system
  • Preparation process of clean fracturing fluid with remarkably increased viscosity number of system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] The invention relates to a process for preparing a clean fracturing fluid that significantly increases the viscosity of the system, comprising the following steps:

[0027] (a) First, in the saline solution, add an appropriate amount of surfactant, and stir for a period of time;

[0028] (b) Then, under the condition of stirring, add a certain amount of sodium salicylate, fully stir to obtain the solution;

[0029] (c) Finally, store it in a constant temperature water bath for a period of time to fully defoam, and then obtain a clean fracturing fluid.

[0030] The above-mentioned saline solution is a sodium chloride solution; the surfactant is cetyltrimethylammonium chloride.

[0031] In order to obtain the best brine dosage, the present invention has done an experiment on the influence of brine dosage on the system concentration of clean fracturing fluid, and the results are as follows figure 1 shown by figure 1 It can be seen that the addition of KCl has little eff...

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 discloses a preparation process of a clean fracturing fluid with remarkably increased viscosity number of a system. The preparation process comprises the following steps of: (a) firstly, adding a 1.8%-2.2% surfactant in a 3.0%-5.0% saline solution, and stirring for a period of time; (b) secondly, adding 0.4-0.6% sodium salicylate under the stirring condition, and adequately stirring to obtain a solution; and (c) finally, preserving the solution in a constant-temperature water bath for a period of time to adequately defoam, then obtaining the clean fracturing fluid. According to the invention, via control of the dosages of saline, surfactant and sodium salicylate, the viscosity number of the whole system can be greatly increased, and then the product quality of the prepared clean fracturing fluid can be improved.

Description

technical field [0001] The invention relates to a preparation process of clean fracturing fluid, in particular to a preparation process of clean fracturing fluid which significantly increases the viscosity of the system. Background technique [0002] The hydraulic fracturing stimulation technology of oil and gas wells is an effective method to transform oil and gas layers, and an effective measure for increasing production and injection of oil and gas wells and water wells. This technology has accumulated more than 50 years of experience and is widely used in oil and gas field exploration and development. At the same time, 6×10 4 tons of chemicals. [0003] The so-called hydraulic fracturing of the oil layer is to use hydraulic force to form cracks in the oil layer buried hundreds to thousands of meters. The process of hydraulic fracturing of oil layers generally refers to the use of high-pressure and large-displacement pumps on the ground to inject a liquid (fracturing f...

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): C09K8/68
Inventor 刘高昌
Owner 刘高昌
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap