A kind of dissolvable alloy and its preparation method and application

An alloy and intermediate alloy technology, which is used in earth-moving drilling, wellbore/well components, sealing/packaging, etc., can solve the problems of long production time for new wells, affecting the smoothness of the wellbore, labor and time-consuming, etc., and achieve reasonable component design. , convenient operation, simple and reasonable preparation process

Active Publication Date: 2017-07-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of bridge plug is usually made of steel, cast iron or composite materials. The milling process is labor-intensive and time-consuming. The debris produced during the milling process affects the smooth flow of the wellbore, and the construction costs increase, and the new well takes a long time to put into production.

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  • A kind of dissolvable alloy and its preparation method and application

Examples

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Comparison scheme
Effect test

Embodiment 1

[0032] This example provides a dissolvable alloy.

[0033] In terms of mass percentage, the soluble alloy in this embodiment contains: aluminum 3.4-3.5wt%, silicon 2.0-2.2wt%, copper 1.5-1.6wt%, tin 2.0-2.1wt%, zinc 1.4-1.5wt% and The balance of magnesium.

[0034] Preparations before preparing dissolvable alloys:

[0035] Prepare materials according to the designed composition ratio, wherein the amount of Si is converted to the amount of Al-50wt% Si master alloy; the amount of aluminum includes the amount in the above master alloy and the amount of metal aluminum; metal magnesium, aluminum, copper, The purity of tin and zinc are both 99.9%; the Al-50wt% Si master alloy is pre-ground.

[0036] The process of preparing a dissolvable alloy involves the following steps:

[0037] 1. Use electromagnetic induction furnace for melting, put the metal magnesium, aluminum, copper, tin and zinc prepared according to the ratio into the melting furnace crucible, under electromagnetic st...

Embodiment 2

[0043] This example provides a dissolvable alloy.

[0044] In terms of mass percentage, the soluble alloy in this embodiment contains: aluminum 3.9-4.0wt%, silicon 2.2-2.3wt%, copper 2.3-2.4wt%, tin 2.7-2.8wt%, zinc 0.7-0.8wt% and The balance of magnesium.

[0045] Preparations before preparing dissolvable alloys:

[0046] Prepare materials according to the designed composition ratio, wherein the amount of Si is converted to the amount of Al-50wt% Si master alloy; the amount of aluminum includes the amount in the above master alloy and the amount of metal aluminum; metal magnesium, aluminum, copper, The purity of tin and zinc are both 99.9%; the Al-50wt% Si master alloy is pre-ground.

[0047] The process of preparing a dissolvable alloy involves the following steps:

[0048] 1. Use electromagnetic induction furnace for smelting, put the metal magnesium, aluminum, copper, tin and zinc prepared according to the ratio into the crucible of the melting furnace, under electromag...

Embodiment 3

[0054] This example provides a dissolvable alloy.

[0055] In terms of mass percentage, the soluble alloy in this embodiment contains: aluminum 4.1-4.2wt%, silicon 2.9-3.0wt%, copper 3.0-3.1wt%, tin 3.1-3.2wt%, zinc 1.9-2.0wt% and The balance of magnesium.

[0056] Preparations before preparing dissolvable alloys:

[0057] Prepare materials according to the designed composition ratio, wherein the amount of Si is converted to the amount of Al-50wt% Si master alloy; the amount of aluminum includes the amount in the above master alloy and the amount of metal aluminum; metal magnesium, aluminum, copper, The purity of tin and zinc are both 99.9%; the Al-50wt% Si master alloy is pre-ground.

[0058] The process of preparing a dissolvable alloy involves the following steps:

[0059] 1. Use electromagnetic induction furnace for smelting, put the metal magnesium, aluminum, copper, tin and zinc prepared according to the ratio into the crucible of the melting furnace, under electromagne...

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Abstract

The invention provides dissoluble alloy and a preparation method and application thereof. The dissoluble alloy comprises, by weight, 0.5%-8.0% of aluminum, 0.5%-6.0% of silicon, 0.4%-5.0% of copper, 0.8%-6.0% of tin, 0.3%-4% of zinc, and the balance magnesium. The preparation method of the dissoluble alloy includes the following steps that the magnesium, the aluminum, the copper, the tin and the zinc are smelted into melt; and Al-50wt% Si intermediate alloy is added into the melt, casting is conducted after the Al-50wt%Si intermediate alloy and the melt are stirred evenly, and the dissoluble alloy is obtained. On the premise of meeting the ratio requirements of the components, the silicon is added in the form of the Al-50wt%Si intermediate alloy. Fracture bridge plugs capable of being made of the dissoluble alloy are used for oil production engineering.

Description

technical field [0001] The invention belongs to the field of oil recovery engineering, and in particular relates to a soluble alloy and its preparation method and application. Background technique [0002] In the field of oil and gas field development, fracturing bridge plugs usually need to be milled and removed in time after fracturing is completed, so as to keep the wellbore unblocked and create favorable conditions for subsequent production and downhole operations. This type of bridge plug is usually made of steel, cast iron or composite materials. The milling process is labor-intensive and time-consuming. The debris generated during the milling process affects the smooth flow of the wellbore, and the construction costs increase, and the new well takes a long time to put into production. Therefore, in order to save man-hours and costs, new fracturing plug materials need to be developed. Contents of the invention [0003] In order to overcome the above problems, the ob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02C22C23/04C22C23/00C22C1/03E21B33/134
CPCC22C1/03C22C23/00C22C23/02C22C23/04E21B33/134
Inventor 陈琳魏松波沈泽俊裴晓含石白茹付涛陈爱民
Owner PETROCHINA CO LTD
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