Preparation method of soluble Mg2Si-radical high-strength light-weight balls for oil-gas fracturing

A soluble, oil-pneumatic technology, applied in the direction of earthwork drilling, production fluid, wellbore/well components, etc., to achieve the effect of good solubility, light weight and high mechanical strength

Inactive Publication Date: 2014-07-02
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Application Information

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Problems solved by technology

[0006] The purpose of the patent of the present invention is to provide a kind of intermetallic compound Mg 2 As the matrix material used in the fracturing process, Si nano-block material has high mechanical strength, light weight and can gradually dissolve naturally after the fracturing operation is completed, which can completely solve the shortcomings of traditional fracturing materials

Method used

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  • Preparation method of soluble Mg2Si-radical high-strength light-weight balls for oil-gas fracturing
  • Preparation method of soluble Mg2Si-radical high-strength light-weight balls for oil-gas fracturing

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Embodiment Construction

[0026] Below in conjunction with specific embodiment, further illustrate the present invention.

[0027] A kind of soluble Mg for oil and gas fracturing 2 The preparation method of Si-based high-strength lightweight ball is characterized in that the method comprises the following steps:

[0028] Step 1, prepare Mg 2 Si-based nano-bulk

[0029] The raw materials are Mg powder and Si powder, and the raw material powder is obtained at a mass ratio of 1.7311.904:1, and the raw material powder is added to a process control agent to obtain a mixture, and the mass ratio of the process control agent to the raw material powder is 6- 10:1;

[0030] Put the above mixture into a stainless steel vacuum ball mill tank, and ball mill under the protection of high-purity Ar (99.999%), and the ball milling time is 7h-25h.

[0031] The ball-milled powder is transferred into a tungsten carbide (WC) mold, and put into a hot-press furnace for vacuum hot-pressing. The holding time is 40-120min,...

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Abstract

The invention relates to a preparation method of soluble Mg2Si-radical high-strength light-weight balls for oil-gas fracturing. A prepared Mg2Si nano bulk material serving as a fracturing ball material used during fracturing is high in mechanical strength and light in weight, the compression strength is up to 1640Mpa, Young's modulus is up to 120Gpa, density is about 1.95g / cm<3>, the material can be gradually naturally dissolved after fracturing operations are completed, and defects of traditional fracturing materials can be solved completely.

Description

technical field [0001] The patent of this invention relates to a soluble Mg for oil and gas fracturing 2 A method for preparing Si-based high-strength lightweight balls. Background technique [0002] Artificial fracturing technology is commonly used in the oil and gas industry, and the successful application of this technology makes it possible to exploit low-permeability shale gas. A typical multistage artificial fracturing system consists of internal components such as open hole packers, wellbore isolation valves, sliding sleeves, setting ball seats and setting balls (frac balls) within the sliding sleeves. [0003] After the fracturing operation, the setting ball and the setting ball seat must be removed from the well to allow clear access for production. Removal often requires the use of workover machines, or continuous well operations machines to drill out the plug. Lightweight setting balls made of materials such as phenolic resins can be removed by reflow. However...

Claims

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Application Information

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IPC IPC(8): B22F3/14B22F1/00C22C23/00E21B43/26
Inventor 熊伟于思荣赵严徐英王晓琼肖寒郭瑾
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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