ASTM Dissolvable Magnesium Alloy Silver Owen Magna Range Bridge Plug

Accurate Location Of The Seal Dissolvable Magnesium Alloy For Dissolvable Bridge Plugs

Introduction:

The introduction of degradable materials into the downhole temporary plugging tool allows the workpiece to dissolve and fail in the downhole, which can save the drilling and grinding and recovery processes, reduce engineering risks, improve construction efficiency, and avoid drilling cuttings and circulating fluids.

Therefore, the research and development of high-strength degradable materials for downhole temporary plugging tools can achieve a win-win model of efficiency improvement and environmental protection, greatly improve operating efficiency and reduce operating costs.

The strong plasticity, stiffness and processing properties of magnesium alloy materials are far superior to those of degradable polymer materials, and their degradation rate can be effectively regulated by methods such as composition adjustment, heat treatment, plastic deformation, and surface treatment.

Advantage:

1. Each component in the bridge plug is fully melted within the specified time range without any residue;
2. There is one and only one sealing barrel; the inner diameter is concave, which closely matches the wellbore and is sealed 360 degrees;
3. The length is short, the pumping speed is fast, and the sectional construction period is shortened;
4. Simple structure, convenient assembly, saving a lot of manpower and time;
5. All dissolved, the longest time is not more than 7-12 days to achieve unsealing, even if the setting fails, the cost of drilling and grinding will be omitted;
6. High safety factor.

Application:

The soluble bridge plug with soluble magnesium alloy as the main material has a simple structure. The materials of the upper vertebral body, the sealing cylinder, the lower vertebral body and the lower joint are all magnesium-based alloy materials, and the dissolution rate is the same under the same environmental conditions. Accurately grasp the overall dissolution time of the bridge plug, using magnesium-based alloy materials to ensure the compressive strength, with a certain elastic deformation, and can achieve complete dissolution in the later stage; the outside of the sealing cylinder is sprayed with an alloy coating, which has high hardness and can be Ensure reliable anchoring and sealing between the outer surface of the sealing cylinder and the inner wall of the casing, and at the same time form fine particles after dissolving, which are discharged together with the backflow liquid; the structure of the sealing cylinder is ingenious, and the functions of anchoring and sealing are realized at the same time, and there is no need to separately set slips and seals, while the function is not reduced, the number of connecting parts is reduced, and the connection method is simple and reliable, which reduces the processing difficulty and manufacturing cost.

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