We43 Magnesium Alloy G97 Plugwell Bridge Plugs complete dissolution

Low Cost Dissolvable Magnesium Alloy For Downhole Plugging Of Oil

Introduction:

The development of unconventional oil and gas resources must rely on reservoir stimulation technologies such as hydraulic fracturing and acid fracturing. Among them, multi-layer and multi-stage fracturing using casing sliding sleeves, open-hole packers and bridge plugs is currently a common technology. In the process of downhole layered and staged fracturing, it is necessary to throw balls or lower bridge plugs for isolation between layers, and then proceed to the next step of construction. After the construction is completed, such temporary plugging tools need to be removed.

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 recycling processes, reduce engineering risks, improve construction efficiency, and also avoid drilling cuttings and circulating fluids. Damage to the reservoir. 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 composition adjustment, heat treatment, plastic deformation, surface treatment and other methods.

Features:

1. The body, cartridge and slip are all soluble;

2. After dissolution, the wellbore forms a full diameter, and production logging can be performed in the later stage of production;

3. The high-strength soluble metal composition has a bearing pressure of 70Mpa, which meets the sealing requirements of fracturing construction;

4. Completely eliminate the risk of coiled tubing drilling and grinding, saving construction time and cost;

5. It is not restricted by the length of the coiled tubing, and can be loaded indefinitely. (based on customer's needs);

6. The running method is the same as that of conventional composite bridge plugs, using standard Baker & Owen hydraulic setting tools;

7. The material can be easily drilled and ground, and the time is about 20 minutes per piece;

8. Meet API requirements.

Application:

At present, it is mainly used in drilling and completion tools and staged fracturing technology, forming various tools such as soluble fracturing balls, soluble fracturing ball seats, soluble fracturing bridge plugs, and soluble blind plates. At present, when applying staged fracturing technology, the fracturing ball cannot fly upside down, the production diameter is small, and a drill plug is required after fracturing.

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