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Zinc-based dissolvable metal material and preparation and processing method thereof

A metal material, zinc-based technology, applied in the field of zinc-based soluble metal materials and their preparation and processing, can solve the problems of limited load capacity and unusability, and achieve the effect of optimized design

Active Publication Date: 2021-12-03
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although magnesium alloy is currently the main candidate material for dissolvable bridge plugs, it must be surface treated before use, and its load capacity is limited. There are still uncertainties in the complex and changeable underground environment, and it cannot even be used under some environmental conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The zinc-based soluble material prepared in this example includes the following composition ratios: Cu: 0.5%, Fe: 0.5%, Mg: 1.2%, and the rest is zinc. Wherein Cu and Mg are added in the form of Mg-30% Cu master alloy, and Fe is added in powder form. The above are all percentages by mass.

[0030] The preparation method of the zinc-based soluble material prepared in this embodiment comprises the following steps:

[0031](1) First, preheat the zinc ingot and the crucible to remove moisture. The preheating temperature is 100°C, and then put the preheated 25% of the total mass of zinc in the crucible, and the crucible is heated slowly. The initial temperature does not exceed 400°C, and then Keep warm for 10 minutes, and further heat until the zinc ingots are completely melted, and then continue to add zinc ingots in batches to ensure that the zinc ingots can be completely covered by the melt each time until the expected total amount is reached. The maximum temperature of...

Embodiment 2

[0038] The zinc-based soluble material prepared in this embodiment includes the following composition ratios: Cu: 3%, Fe: 0.5%, Mg: 1.6%, and the rest is zinc. Among them, Cu and Mg are added in the form of Mg-65% Cu master alloy, and Fe is added in powder form. The above are all percentages by mass.

[0039] (1) First, preheat the zinc ingot and the crucible to remove moisture. The preheating temperature is 100°C, and then put the preheated 25% of the total mass of zinc in the crucible, and the crucible is heated slowly. The initial temperature does not exceed 400°C, and then Keep warm for 8 minutes, and further heat until the zinc ingots are completely melted, and then continue to add zinc ingots in batches to ensure that the zinc ingots can be completely covered by the melt each time until the expected total amount is reached. The maximum temperature of the crucible does not exceed 600°C. During the heating process, protective gas is used throughout to prevent zinc oxidat...

Embodiment 3

[0046] The zinc-based soluble material prepared in this example includes the following composition ratios: Cu: 1%, Fe: 0.5%, Mg: 2.0%, and the rest is zinc. Among them, Cu and Mg are added in the form of Mg-35% Cu master alloy, and Fe is added in powder form. The above are all percentages by mass.

[0047] (1) First, preheat the zinc ingot and the crucible to remove moisture. The preheating temperature is 125°C, and then place the preheated 30% of the total mass of zinc in the crucible, and the crucible is heated slowly. The initial temperature does not exceed 400°C, and then Keep warm for 9 minutes, and further heat until the zinc ingots are completely melted, and then continue to add zinc ingots in batches to ensure that the zinc ingots can be completely covered by the melt each time until the expected total amount is reached. The maximum temperature of the crucible does not exceed 600°C. During the heating process, protective gas is used throughout to prevent zinc oxidati...

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Abstract

The invention relates to a zinc-based soluble metal material and a preparation and processing method thereof, belonging to the technical field of industrial zinc alloys. The mass percent composition of the metal material is: Cu: 0.5-3.0%, Fe: 0.5-2.0%, Mg: 1.2-4.5%, and the rest is zinc. First, preheat the zinc ingot and the crucible, place part of the zinc in the crucible, heat until the zinc ingot is completely melted, add the zinc ingot in batches, each time the zinc ingot is completely covered by the melt, until the expected total amount is reached; use protective gas protection; Add the preheated Mg‑Cu master alloy to increase the temperature of the crucible; add Fe powder, the iron powder has been surface treated, apply electromagnetic stirring and ultrasonic stirring to the melt; extrude into rods; water-cool or air-cool to room temperature; deform again to obtain Final product. The invention optimizes the design from two aspects of composition and deformation processing, realizes the regulation and control of the corrosion rate of the final alloy, and meets the needs of research and development of degradable bridge plugs for petroleum exploitation.

Description

technical field [0001] The invention relates to a class of zinc-based soluble metal materials and a preparation and processing method thereof, belonging to the technical field of industrial zinc alloys. Background technique [0002] In the field of petroleum, fracturing refers to a method that uses hydraulic action to form cracks in oil and gas layers during the process of oil or gas recovery, also known as hydraulic fracturing. Fracturing is to artificially create fractures in the formation, improve the flow environment of oil underground, increase the production of oil wells, and play an important role in improving the flow conditions at the bottom of oil wells, slowing down interlayers and improving the production status of oil layers. Classification water (oil) hydraulic fracturing, high-energy gas pressure fracturing, can be divided into single packer layering, double packer layering, bridge packer layering, sliding sleeve packer according to the type of packer layered...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/02C22C18/00C22C1/03C22F1/16
CPCC22C1/03C22C18/00C22C18/02C22F1/002C22F1/165
Inventor 马鸣龙张奎李兴刚李永军袁家伟石国梁薛鹏皓
Owner GRIMAT ENG INST CO LTD