Soluble magnesium-base alloy material, and preparation method and application thereof

A magnesium-based alloy, soluble technology, used in earth-moving drilling, mining fluids, wellbore/well components, etc., can solve the problems of high cost, low work efficiency, complex fracturing ball process, etc. Solve the effect of high preparation cost and simple process

Inactive Publication Date: 2014-07-02
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to break the technical blockade and solve the problems of complex process, high cost and low work efficiency in the fracturing ball of the existing fracturing technology, the present invention provides a soluble magnesium-based alloy material and discloses its preparation method. The soluble magnesium alloy material of the present invention Magnesium-based alloy materials can be used to prepare fracturing balls in the staged fracturing technology of horizontal wells. The prepared fracturing balls have high hardness, strong pressure bearing capacity, and the dissolution rate in electrolyte solution meets the requirements

Method used

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  • Soluble magnesium-base alloy material, and preparation method and application thereof
  • Soluble magnesium-base alloy material, and preparation method and application thereof
  • Soluble magnesium-base alloy material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] ①Prepare 5 kinds of metal powders with a purity ≥99.9%, the mass parts are: Mg94%, Al3.5%, Zn1.5%, Mn0.7%, Co0.3%, and their particle sizes are: magnesium powder 50~ 60μm, aluminum powder 1~5μm, zinc powder 1~5μm, lead powder 1~5μm and cobalt powder 1~5μm

[0032] Place the above proportioned components in a vacuum powder mixer and mix evenly. During the mixing process, pass through argon protection, then put them into a cylindrical high-purity graphite mold, and pre-press with a pressure of 100 MPa on a cold press molding machine. forming;

[0033] ②Put the above pre-pressed materials in a vacuum sintering furnace for sintering. During the sintering process, argon protection is introduced, the sintering temperature is 550°C, the pressure is 170MPa during the sintering process, and the sintering time is 1.5h;

[0034]③ After the sintering is completed, the alloy is cooled with the furnace for 1 hour and then taken out to obtain a cylindrical alloy billet;

[0035] ④Th...

Embodiment 2

[0038] ①Prepare 5 kinds of metal powders with a purity ≥99.9%, the mass parts are: Mg89%, Al8.0%, Zn1.7%, Mn1.0%, Co0.3%, and their particle sizes are: magnesium powder 50~ 60 μm, aluminum powder 1-5 μm, zinc powder 1-5 μm, lead powder 1-5 μm and cobalt powder 1-5 μm. Place the above proportioned components in a vacuum powder mixer and mix them evenly. During the mixing process, pass through argon protection, then put them into a cylindrical high-purity graphite mold, and pre-press with a pressure of 100 MPa on a cold press molding machine. forming;

[0039] ②Put the above pre-pressed materials in a vacuum sintering furnace for sintering. During the sintering process, argon protection is introduced, the sintering temperature is 550°C, the pressure is 170MPa during the sintering process, and the sintering time is 1.5h;

[0040] ③ After the sintering is completed, the alloy is cooled with the furnace for 1 hour and then taken out to obtain a cylindrical alloy billet;

[0041] ...

Embodiment 3

[0044] ① Prepare 5 kinds of metal powders with a purity ≥ 99.9%, the mass parts are: Mg82%, Al15%, Zn1.7%, Mn1.0%, Co0.3%, and their particle sizes are: magnesium powder 50-70μm, Aluminum powder 1-5 μm, zinc powder 1-5 μm, lead powder 1-5 μm and cobalt powder 1-5 μm. Place the above proportioned components in a vacuum powder mixer and mix them evenly. During the mixing process, pass through argon protection, then put them into a cylindrical high-purity graphite mold, and pre-press with a pressure of 100 MPa on a cold press molding machine. forming;

[0045] ②Put the above pre-pressed materials in a vacuum sintering furnace for sintering. During the sintering process, argon protection is introduced, the sintering temperature is 550°C, the pressure is 170MPa during the sintering process, and the sintering time is 1.5h;

[0046] ③ After the sintering is completed, the alloy is cooled with the furnace for 1 hour and then taken out to obtain a cylindrical alloy billet;

[0047] ④...

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Abstract

The invention relates to a soluble magnesium-base alloy material which comprises the following components in percentage by mass: 80-95% of Mg, 3-19% of Al, 0.5-3% of Zn, 0.1-1% of Mn and 0.1-1% of Co, totaling 100%. The preparation method comprises the following steps: evenly mixing magnesium powder, aluminum powder, zinc powder, manganese powder and cobalt powder, carrying out cold pressing and sintering. The soluble magnesium-base alloy material can be used for fracturing balls in a horizontal well staged fracturing technique; the dissolution rate of the soluble magnesium-base alloy material in a normal-temperature 3% KCl solution is 10-40 mg.cm<-2>.h<-1>; and the soluble magnesium-base alloy material can bear a pressure of 60-110 MPa, which exceeds the level in the prior art. The technique for preparing the soluble magnesium-base alloy material is simple, and solves the problems of high preparation cost and low working efficiency in the existing fracturing balls.

Description

technical field [0001] The invention relates to alloy material technology, in particular to a soluble magnesium-based alloy material and its preparation method and application. Background technique [0002] In the context of the era when the world has entered the development of hard-to-produce reserves, my country's main oilfields are facing low-permeability and ultra-low-permeability development problems, and urgently need to seek breakthroughs in the development of unconventional oil and gas resources such as tight gas, shale gas, and tight oil. . The development and application of staged fracturing technology for horizontal wells is becoming the key to solving current problems and future development, and also the future of China's fracturing technology development. One of the key components of the staged fracturing technology for horizontal wells is the fracturing ball, which is the main factor determining whether the fracturing is successful. At present, the main proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/04E21B43/26
Inventor 李国宾马忠民孙树德
Owner DALIAN MARITIME UNIVERSITY
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