High-temperature-resistant modified titanium dioxide crosslinking agent for cracking liquid and preparation method thereof

A technology of nano-titanium dioxide and cross-linking agent, applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of being unable to adapt to fracturing construction, etc., and achieve simple and reliable experimental methods, good temperature resistance and shear resistance cutting performance, the effect of tight three-dimensional network structure
CN110330962APending Publication Date: 2019-10-15SOUTHWEST PETROLEUM UNIV
13 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHWEST PETROLEUM UNIV
Publication Date
2019-10-15

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A preparation method of a high-temperature-resistant modified titanium dioxide crosslinking agent comprises the following steps: (1) adjusting the pH of alcohol to be 2-4 through hydrochloric acid; adding an inorganic titanium source to the alcohol solution; carrying out a reaction for 60 min to obtain nanometer titanium dioxide liquid; (2) washing the nanometer titanium dioxide liquid through ethyl alcohol; centrifuging solution; dispersing white solid into deionized water and ethyl alcohol; (3) adding an organic ligand to the dispersed nanometer titanium dioxide liquid; carrying out a reaction; adjusting the pH to be 6-9 to obtain the modified nanometer titanium dioxide crosslinking agent. With the adoption of the modified titanium dioxide crosslinking agent prepared according to the method, the temperature and shearing resistance of a cracking liquid system can be improved; cracking liquid jelly is high in viscoelasticity.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of fracturing in petroleum development, and in particular relates to a high-temperature-resistant modified nano-titanium dioxide crosslinking agent for fracturing fluid and a preparation method thereof. Background technique

[0002] In recent decades, with the development of exploration and development technology, most of my country's shallow oil and gas resources have been developed, while deep oil and gas resources are still relatively rich, of which oil accounts for about 30% and natural gas accounts for about 60%. With the rapid increase in the number of high-temperature deep wells with a depth of more than 4,500 meters and a downhole temperature of 150°C or higher, development technologies such as drilling and completion are facing more difficult challenges, and higher requirements are also placed on fracturing technology. As the main component of fracturing fluid, cross-linking agent directly affects t...

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